CN202957583U - Switching power device with alternating current input over-voltage protection function - Google Patents
Switching power device with alternating current input over-voltage protection function Download PDFInfo
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- CN202957583U CN202957583U CN 201120564497 CN201120564497U CN202957583U CN 202957583 U CN202957583 U CN 202957583U CN 201120564497 CN201120564497 CN 201120564497 CN 201120564497 U CN201120564497 U CN 201120564497U CN 202957583 U CN202957583 U CN 202957583U
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Abstract
The utility model discloses a switching power device with an alternating current input over-voltage protection function. The switching power device comprises a soft starting circuit, a rectification and correction circuit, an alternating current and direct current detection module, a relay control circuit, a power circuit and an auxiliary power supply. The soft starting circuit comprises a first switch, a second switch and a soft starting resistor, wherein the first and second switches are connected in parallel; the soft starting resistor is connected with a diode which is connected with the output electrode of the rectification and correction circuit; one end of the second switch is connected with alternating current input, and the other end of the second switch is connected with the input end of the rectification and correction circuit; and the first and second switches are relay contacts. A logical judgment unit is arranged in the relay control circuit, and controls the first and second switches to be turned off to realize over-voltage separation when voltage input by the switching power device is higher than preset voltage. The switching power device has the advantages of capability of realizing the over-voltage separation per se when alternating current input voltage is over-high, simple structure and low cost.
Description
Technical field
The utility model relates to a kind of switching power unit that exchanges the input overvoltage protection that has.
Background technology
The switching power unit module is generally taked the circuit topology as Fig. 1, comprises soft-start module, rectification correcting circuit, power circuit, accessory power supply, alternating current-direct current detection module and control relay circuit etc.
If the alternating current input power supplying electric voltage over press for preventing the damage of power module, is generally taked to close main power circuit, is stopped the measures such as power stage and cut-off switch K0.During this period, input ac power is powered to accessory power supply by soft start resistance Z0, and to guarantee that alternating current-direct current detects and the control relay circuit normal operation, this moment, soft start resistance Z0 played certain dividing potential drop effect.If but AC-input voltage is too high, and minute compression functions of soft start resistance Z0 is limited, and the withstand voltage of inside modules device may be inadequate at this moment, thereby cause the damage of switching power unit module.And this moment, real effective measures were couplings of cutting off alternating current input power supplying and back circuit, i.e. over-voltage breaking.
If but in present switching power unit, AC-input voltage is too high, module can't self realize over-voltage breaking, in case break away from, accessory power supply also stops power supply output, thereby causes alternating current-direct current detection and control relay circuit to quit work.The way of the general present overvoltage protection contactor of taking to increase exchanges in system reaches the purpose that breaks away from electrical network, but the method needs additional equipment, has increased cost.
The utility model content
For in the switching power unit that overcomes prior art when AC-input voltage is too high module can't self realize that the shortcoming of over-voltage breaking, the utility model provide a kind of and can realize that when AC-input voltage is too high module can self realize over-voltage breaking, simple in structure, with low cost have a devices and methods therefor that exchanges the input overvoltage protection.
A kind of switching power unit with interchange input overvoltage protection, the soft starting circuit that comprises the incoming transport electricity, the alternating current of switching power unit input is carried out the rectification correcting circuit of rectification and output DC, detect the alternating current-direct current detection module of the actual input voltage of alternating current-direct current, be connected with the alternating current-direct current detection module, control according to actual input voltage the control relay circuit that soft starting circuit carries out the overvoltage disengaging, with the power circuit of out-put supply, and it is the accessory power supply of alternating current-direct current detection module and control relay circuit power supply;
It is characterized in that: soft starting circuit comprises the first switch and second switch in parallel, and the first switch one end connects the alternating current input, the logical series connection of the other end one soft start resistance, and soft start resistance connects diode, and diode is connected with the output stage of rectification correcting circuit;
Second switch one end connects the alternating current input, and the other end connects the input of rectification correcting circuit;
Described the first switch and second switch are relay contact, and the first switch is normally-closed contact, and second switch is normally opened contact; Be provided with logic judgment unit in control relay circuit, when switching power unit voltage during higher than predeterminated voltage, logic judgment unit is controlled the first switch and second switch and is disconnected and realizes that overvoltage breaks away from; During lower than predeterminated voltage, it is closed that logic judgment unit is controlled the first switching power unit, controls the second switch closure after soft start is completed again when switching power unit voltage.
Further, the rectification correcting circuit is full-bridge type rectification circuit or rectification correcting circuit, the perhaps combination of full-bridge type rectification circuit and rectification correcting circuit, and soft start resistance is connected by the output of diode with the rectification correcting circuit;
The alternating current-direct current detection module be detect the alternating current input actual alternating voltage the interchange detecting unit or detect the direct current detecting unit of the actual DC voltage of rectification correcting circuit output, perhaps exchange the combination of detecting unit and direct current detecting unit, exchange in detecting unit and be preset with upper limit alternating voltage, be preset with upper limit direct voltage in the direct current detecting unit; Exchange detecting unit contrast upper limit alternating voltage and actual alternating voltage and with comparing result input logic judging unit, direct current detecting unit contrast upper limit direct voltage and actual DC voltage and with comparing result input logic judging unit.
Further, soft start resistance series connection the first diode, the negative end of the first diode is connected with the output positive bus-bar of rectification correcting circuit.
Perhaps, soft start resistance series connection the second diode, the forward end of the second diode is connected with the output negative busbar of rectification correcting circuit.
Perhaps, soft start resistance series connection the first diode, the negative end of the first diode is connected with the output positive bus-bar of rectification correcting circuit; And soft start resistance series connection the second diode, the forward end of the second diode is connected with the output negative busbar of rectification correcting circuit.
Perhaps, soft start resistance is comprised of the first resistance and the second resistance, first resistance series connection the first diode, and the negative end of the first diode is connected with the output positive bus-bar of rectification correcting circuit; Second resistance series connection the second diode, the forward end of the second diode is connected with the output negative busbar of rectification correcting circuit.
Further, the input of accessory power supply is connected with the output of rectification correcting circuit, perhaps is connected with ac input end, perhaps is connected with output, the ac input end of rectification correcting circuit simultaneously.
Further, the alternating current of input is three-phase alternating current, wherein is respectively equipped with soft starting circuit on two live wires.
Technical conceive of the present utility model is: exchange the actual alternating voltage that detecting unit detects alternating-current power supply in real time, the direct current detecting unit detects the actual DC voltage of rectification correcting circuit output in real time, when actual alternating voltage higher than default upper limit alternating voltage or actual DC voltage during higher than upper limit direct voltage, logic judgment unit disconnects the first switch and second switch, the disconnection that is connected of alternating-current power supply and rectification correcting circuit realizes that overvoltage breaks away from.During lower than upper limit alternating voltage, it is closed that logic judgment unit is controlled the first switch when actual alternating voltage, and alternating current is by the capacitive load power supply of the first switch, soft start resistance, diode pair switching power unit.
The utlity model has and to realize that when AC-input voltage is too high module can self realize over-voltage breaking, advantage simple in structure, with low cost.
Description of drawings
Fig. 1 is the schematic diagram that existing band exchanges input over-pressure safety device switching power unit module.
Fig. 2 is a kind of schematic diagram of series system of the soft start resistance of embodiment one.
Fig. 2-1st, the schematic diagram of the another kind of series system of the soft start resistance of embodiment one.
Fig. 3 is a kind of schematic diagram of series system of the soft start resistance of embodiment two.
Fig. 3-1st, the schematic diagram of the another kind of series system of the soft start resistance of embodiment two.
Fig. 4 is a kind of schematic diagram of series system of the soft start resistance of embodiment three.
Fig. 4-1st, the schematic diagram of the another kind of series system of the soft start resistance of embodiment three.
Fig. 5 is a kind of schematic diagram of series system of the soft start resistance of embodiment four.
Fig. 5-1st, the schematic diagram of the another kind of series system of the soft start resistance of embodiment four.
Fig. 6 is a kind of schematic diagram of series system of the soft start resistance of embodiment five.
Fig. 6-1st, the schematic diagram of the another kind of series system of the soft start resistance of embodiment five.
Fig. 7 is a kind of schematic diagram of series system of the soft start resistance of embodiment six.
Fig. 7-1st, the schematic diagram of the another kind of series system of the soft start resistance of embodiment six.
Fig. 8 is a kind of schematic diagram of series system of the soft start resistance of embodiment seven.
Fig. 8-1st, the schematic diagram of the another kind of series system of the soft start resistance of embodiment seven.
Fig. 9 is a kind of schematic diagram of series system of the soft start resistance of embodiment eight.
Fig. 9-1st, the schematic diagram of the another kind of series system of the soft start resistance of embodiment eight.
Figure 10 is the schematic diagram of embodiment nine.
Embodiment
Embodiment one
With reference to Fig. 2,2-1
A kind of switching power unit with interchange input overvoltage protection, the soft starting circuit that comprises the incoming transport electricity, the alternating current of switching power unit input is carried out the rectification correcting circuit of rectification and output DC, detect the alternating current-direct current detection module of the virtual voltage of alternating current, be connected with the alternating current-direct current detection module, control according to the virtual voltage of real alternating current the control relay circuit that soft starting circuit carries out the overvoltage disengaging, with the power circuit for the out-put supply power supply, and it is the accessory power supply of alternating current-direct current detection module and control relay circuit power supply;
Soft starting circuit comprises the first switch and second switch in parallel, and soft start resistance and the diode of connecting with the first switch; Soft start resistance can be that an end is connected with the first switch and the other end is connected with diode, as shown in Figure 2.Soft start resistance can be also that an end is connected with the alternating current input and the other end the first switch connects, as shown in Fig. 2-1.
Second switch one end connects the alternating current input, and the other end connects the input of rectification correcting circuit;
Described the first switch and second switch are relay contact, and the first switch is normally-closed contact, and second switch is normally opened contact; Be provided with logic judgment unit in control relay circuit, when the voltage of switching power unit input during higher than predeterminated voltage, logic judgment unit is controlled the first switch and second switch and is disconnected and realizes that overvoltage breaks away from; When the power supply of switching power unit input during lower than predeterminated voltage, logic judgment unit is controlled the first switching power unit closed pair power circuit and accessory power supply charges, control the second switch closure after soft start is completed, switching power unit enters normal operating conditions again.
The output of rectification correcting circuit is connected with the input of rectification correcting circuit, and soft start resistance is connected by the output of diode with this rectification correcting circuit;
The alternating current-direct current detection module is the interchange detecting unit that detects the actual alternating voltage of alternating current input, perhaps detect the direct current detecting unit of the actual DC voltage of rectification correcting circuit output, perhaps exchange the combination of detecting unit and direct current detecting unit, exchange in detecting unit and be preset with upper limit alternating voltage, be preset with upper limit direct voltage in the direct current detecting unit; Exchange detecting unit contrast upper limit alternating voltage and actual alternating voltage and with comparing result input logic judging unit, direct current detecting unit contrast upper limit direct voltage and actual DC voltage and with comparing result input logic judging unit.
Soft start resistance series connection the first diode, the negative end of the first diode is connected with the output positive bus-bar of rectification correcting circuit; And soft start resistance series connection the second diode, the forward end of the second diode is connected with the output negative busbar of rectification correcting circuit.
The input of accessory power supply is connected with the output of rectification correcting circuit.
Technical conceive of the present utility model is: exchange the actual alternating voltage that detecting unit detects alternating-current power supply in real time, the direct current detecting unit detects the actual DC voltage of rectification correcting circuit output in real time, when actual alternating voltage higher than default upper limit alternating voltage or actual DC voltage during higher than upper limit direct voltage, logic judgment unit disconnects the first switch and second switch, the disconnection that is connected of alternating-current power supply and rectification correcting circuit realizes that overvoltage breaks away from.During lower than upper limit alternating voltage, it is closed that logic judgment unit is controlled the first switch when actual alternating voltage, and alternating current is by the power circuit power supply of the first switch, soft start resistance, diode pair switching power unit.
The utlity model has and to realize that when AC-input voltage is too high module can self realize over-voltage breaking, advantage simple in structure, with low cost.
Embodiment two
With reference to Fig. 3,3-1
The present embodiment is with the difference of embodiment one: soft start resistance first diode of connecting, the negative end of the first diode is connected with the output positive bus-bar of rectification correcting circuit.Soft start resistance can be that an end is connected with the first switch and the other end is connected with the first diode, as shown in Figure 3.Soft start resistance can be also that an end is connected with the alternating current input and the other end the first switch connects, as shown in Fig. 3-1.
All the other structures are all the same.
Embodiment three
With reference to Fig. 4,4-1
The present embodiment is with the difference of embodiment one: soft start resistance second diode of connecting, the forward end of the second diode is connected with the output negative busbar of rectification correcting circuit.Soft start resistance can be that an end is connected with the first switch and the other end is connected with the second diode, as shown in Figure 4.Soft start resistance can be also that an end is connected with the alternating current input and the other end the first switch connects, as shown in Fig. 4-1.
All the other structures are all the same.
Embodiment four
With reference to Fig. 5,5-1
The difference of the present embodiment and embodiment one is pointed out to be: soft start resistance is comprised of the first resistance and the second resistance, first resistance series connection the first diode, and the negative end of the first diode is connected with the output positive bus-bar of rectification correcting circuit; Second resistance series connection the second diode, the forward end of the second diode is connected with the output negative busbar of rectification correcting circuit.The first resistance is connected with the first diode, can be that the first resistance one end is connected with the first switch, the other end is connected with the positive terminal of the first diode, as shown in Figure 5; Negative pole end connection, the other end that can be also first resistance one end the first diode are connected with the output positive bus-bar of rectification correcting circuit, as shown in Fig. 5-1.The second resistance is connected with the second diode, can be that the second resistance one end is connected with the first switch, the other end is connected with the positive terminal of the second diode, as shown in Figure 5; Negative pole end connection, the other end that can be also second resistance one end the second diode are connected with the output negative busbar of rectification correcting circuit, as shown in Fig. 5-1.
All the other structures are all identical.
Embodiment five
With reference to Fig. 6,6-1
The present embodiment is with the difference of embodiment one: the input of accessory power supply is electrically connected to incoming transport.
All the other structures are all identical.
Accessory power supply directly is connected with alternating current, and alternating current is directly to the accessory power supply charging, and then accessory power supply is to exchanging detecting unit, direct current detecting unit and logic judgement Power supply.
In the present embodiment, soft start resistance also has two kinds with the series system of diode: 1, soft start resistance is that an end is connected with the first switch and the other end is connected with diode, as shown in Figure 6.2, soft start resistance can be also that an end is connected with the alternating current input and the other end the first switch connects, as shown in Fig. 6-1.
Embodiment six
With reference to Fig. 7,7-1
The present embodiment is pointed out to be with the difference of embodiment one: the input of accessory power supply is electrically connected to incoming transport.
Soft start resistance series connection the first diode, the negative end of the first diode is connected with the output positive bus-bar of rectification correcting circuit.Soft start resistance can be that an end is connected with the first switch and the other end is connected with the first diode, as shown in Figure 7.Soft start resistance can be also that an end is connected with the alternating current input and the other end the first switch connects, as shown in Fig. 7-1.
All the other structures are all identical.
Embodiment seven
With reference to Fig. 8,8-1
The present embodiment is pointed out to be with the difference of embodiment one: the input of accessory power supply is electrically connected to incoming transport.
Soft start resistance series connection the second diode, the forward end of the second diode is connected with the output negative busbar of rectification correcting circuit.Soft start resistance can be that an end is connected with the first switch and the other end is connected with the second diode, as shown in Figure 8.Soft start resistance can be also that an end is connected with the alternating current input and the other end the first switch connects, as shown in Fig. 8-1.
All the other structures are all the same.
Embodiment eight
With reference to Fig. 9,9-1
The present embodiment is pointed out to be with the difference of embodiment one: the input of accessory power supply is electrically connected to incoming transport.
Soft start resistance is comprised of the first resistance and the second resistance, first resistance series connection the first diode, and the negative end of the first diode is connected with the output positive bus-bar of rectification correcting circuit; Second resistance series connection the second diode, the forward end of the second diode is connected with the output negative busbar of rectification correcting circuit.The first resistance is connected with the first diode, can be that the first resistance one end is connected with the first switch, the other end is connected with the positive terminal of the first diode, as shown in Figure 5; Negative pole end connection, the other end that can be also first resistance one end the first diode are connected with the output positive bus-bar of rectification correcting circuit, as shown in Fig. 5-1.The second resistance is connected with the second diode, can be that the second resistance one end is connected with the first switch, the other end is connected with the positive terminal of the second diode, as shown in Figure 9; Negative pole end connection, the other end that can be also second resistance one end the second diode are connected with the output negative busbar of rectification correcting circuit, as shown in Fig. 9-1.
All the other structures are all identical.
Embodiment nine
With reference to Figure 10
The difference of the present embodiment and embodiment one is pointed out to be: the alternating current of input is three-phase alternating current, wherein is respectively equipped with soft starting circuit on two live wires.
In conjunction with Figure 10 illustrate for: live wire L1 is provided with one group of soft starting circuit, soft starting circuit comprises K switch 1 and K switch 2, K switch 1 one ends are connected with alternating current, the other end is connected with soft start resistance Z1, soft start resistance Z1 is connected with the positive terminal of diode D1, and the negative pole end of diode D1 is connected with the output positive bus-bar of rectification correcting circuit; Soft start resistance Z1 is connected with the negative pole end of diode D2 simultaneously, and the positive terminal of diode D2 is connected with the output negative busbar of rectification correcting circuit; K switch 2 one ends are connected with the alternating current input, the other end is connected with the input of rectification correcting circuit.
Live wire L2 is provided with another group soft starting circuit, soft starting circuit comprises K switch 3 and K switch 4, K switch 3 one ends are connected with alternating current, the other end is connected with soft start resistance Z2, soft start resistance Z2 is connected with the positive terminal of diode D3, and the negative pole end of diode D3 is connected with the output positive bus-bar of rectification correcting circuit; Soft start resistance is connected with the negative pole end of diode D4 simultaneously, and the positive terminal of diode D4 is connected with the output negative busbar of rectification correcting circuit.K switch 4 one ends are connected with the alternating current input, the other end is connected with the input of rectification correcting circuit.
The described content of this specification embodiment is only enumerating the way of realization of utility model design; protection range of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection range of the present utility model also reaches the equivalent technologies means that design can be expected according to the utility model in those skilled in the art.
Claims (8)
1. one kind has the switching power unit that exchanges the input overvoltage protection, the soft starting circuit that comprises the incoming transport electricity, the alternating current of switching power unit input is carried out the rectification correcting circuit of rectification and output DC, detect the alternating current-direct current detection module of the actual input voltage of alternating current-direct current, be connected with the alternating current-direct current detection module, control according to actual input voltage the control relay circuit that soft starting circuit carries out the overvoltage disengaging, with the power circuit for the out-put supply power supply, and it is the accessory power supply of alternating current-direct current detection module and control relay circuit power supply;
It is characterized in that: soft starting circuit comprises the first switch and second switch in parallel, and the first switch one end connects the alternating current input, the logical series connection of the other end one soft start resistance, and soft start resistance connects diode, and diode is connected with the output stage of rectification correcting circuit;
Second switch one end connects the alternating current input, and the other end connects the input of rectification correcting circuit;
Described the first switch and second switch are relay contact, and the first switch is normally-closed contact, and second switch is normally opened contact; Be provided with logic judgment unit in control relay circuit, when switching power unit voltage during higher than predeterminated voltage, logic judgment unit is controlled the first switch and second switch and is disconnected and realizes that overvoltage breaks away from; During lower than predeterminated voltage, it is closed that logic judgment unit is controlled the first switching power unit, controls the second switch closure after soft start is completed again when switching power unit voltage.
2. as claimed in claim 1 have a switching power unit that exchanges the input overvoltage protection, it is characterized in that: the rectification correcting circuit is full-bridge type rectification circuit or rectification correcting circuit, the perhaps combination of full-bridge type rectification circuit and rectification correcting circuit, soft start resistance is connected by the output of diode with this rectification correcting circuit;
The alternating current-direct current detection module comprises the interchange detecting unit of the actual alternating voltage that detects the alternating current input or comprises the direct current detecting unit of the actual DC voltage that detects the output of rectification correcting circuit, perhaps both combinations, exchange in detecting unit and be preset with upper limit alternating voltage, be preset with upper limit direct voltage in the direct current detecting unit; Exchange detecting unit contrast upper limit alternating voltage and actual alternating voltage and with comparing result input logic judging unit, direct current detecting unit contrast upper limit direct voltage and actual DC voltage and with comparing result input logic judging unit.
3. as claimed in claim 2 have a switching power unit that exchanges the input overvoltage protection, and it is characterized in that: soft start resistance series connection the first diode, the negative end of the first diode is connected with the output positive bus-bar of rectification correcting circuit.
4. as claimed in claim 2 have a switching power unit that exchanges the input overvoltage protection, and it is characterized in that: soft start resistance series connection the second diode, the forward end of the second diode is connected with the output negative busbar of rectification correcting circuit.
5. as claimed in claim 2 have a switching power unit that exchanges the input overvoltage protection, it is characterized in that: soft start resistance series connection the first diode, and the negative end of the first diode is connected with the output positive bus-bar of rectification correcting circuit; And soft start resistance series connection the second diode, the forward end of the second diode is connected with the output negative busbar of rectification correcting circuit.
6. as claimed in claim 2 have a switching power unit that exchanges the input overvoltage protection, it is characterized in that: soft start resistance is comprised of the first resistance and the second resistance, first resistance series connection the first diode, the negative end of the first diode is connected with the output positive bus-bar of rectification correcting circuit; Second resistance series connection the second diode, the forward end of the second diode is connected with the output negative busbar of rectification correcting circuit.
7. as described in one of claim 1-6 have a switching power unit that exchanges the input overvoltage protection; it is characterized in that: the input of accessory power supply is connected with the output of rectification correcting circuit; perhaps be connected with ac input end, perhaps be connected with output, the ac input end of rectification correcting circuit simultaneously.
8. as claimed in claim 7 have a switching power unit that exchanges the input overvoltage protection, and it is characterized in that: the alternating current of input is three-phase alternating current, wherein is respectively equipped with soft starting circuit on two live wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120564497 CN202957583U (en) | 2011-12-29 | 2011-12-29 | Switching power device with alternating current input over-voltage protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120564497 CN202957583U (en) | 2011-12-29 | 2011-12-29 | Switching power device with alternating current input over-voltage protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202957583U true CN202957583U (en) | 2013-05-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120564497 Withdrawn - After Issue CN202957583U (en) | 2011-12-29 | 2011-12-29 | Switching power device with alternating current input over-voltage protection function |
Country Status (1)
| Country | Link |
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| CN (1) | CN202957583U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570402A (en) * | 2011-12-29 | 2012-07-11 | 杭州中恒电气股份有限公司 | Switching power device with alternating current input over-voltage protection function |
| CN105720554A (en) * | 2014-12-05 | 2016-06-29 | 台达电子工业股份有限公司 | Overvoltage protection device and operation method thereof |
| CN108683159A (en) * | 2018-04-27 | 2018-10-19 | 东莞市熠源电子科技有限公司 | The power supply protection circuit and its control method of anti-abrupt voltage wave |
-
2011
- 2011-12-29 CN CN 201120564497 patent/CN202957583U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570402A (en) * | 2011-12-29 | 2012-07-11 | 杭州中恒电气股份有限公司 | Switching power device with alternating current input over-voltage protection function |
| CN105720554A (en) * | 2014-12-05 | 2016-06-29 | 台达电子工业股份有限公司 | Overvoltage protection device and operation method thereof |
| CN105720554B (en) * | 2014-12-05 | 2018-12-11 | 台达电子工业股份有限公司 | Overvoltage protection and its operating method |
| CN108683159A (en) * | 2018-04-27 | 2018-10-19 | 东莞市熠源电子科技有限公司 | The power supply protection circuit and its control method of anti-abrupt voltage wave |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130529 Effective date of abandoning: 20150311 |
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| RGAV | Abandon patent right to avoid regrant |