Inventor · disambiguated record
Qingfei Zheng
Also filed as: ZHENG QINGFEI
4 granted patents·1 pending application·9 citations·filing 2009–2011
67Inventor score
Top patents by PatentIndex Score
5 records- 0152US8212403B2Circuit for controlling the operation of a backup power supplyDAI XIANGJUN·Filed 2009·Granted Jul 3, 2012·3 cites·11 claims
- 0247US9099875B2Reverse-connection protecting device and backup power supply including the samePAN QIUPING·Filed 2011·Granted Aug 4, 2015·2 cites·14 claims
- 0344US8237406B2Battery array voltage equalization deviceZHENG QINGFEI·Filed 2009·Granted Aug 7, 2012·3 cites·11 claims
- 0440US8953291B2Reversal connection protecting circuitMI YAOZHONG·Filed 2009·Granted Feb 10, 2015·1 cites·13 claims
- 0527US2010156381A1Voltage Regulating Device for Load StartingSHI DAMING·Filed 2009·Application pending·0 cites
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