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Patent applications and USPTO patent grants for Zheng; Qingfei.The latest application filed is for "reverse-connection protecting device and backup power supply including the same".
Patent | Date |
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Reverse-connection protecting device and backup power supply including the same Grant 9,099,875 - Pan , et al. August 4, 2 | 2015-08-04 |
Reversal connection protecting circuit Grant 8,953,291 - Mi , et al. February 10, 2 | 2015-02-10 |
Battery array voltage equalization device Grant 8,237,406 - Zheng , et al. August 7, 2 | 2012-08-07 |
Circuit for controlling the operation of a backup power supply Grant 8,212,403 - Dai , et al. July 3, 2 | 2012-07-03 |
Reverse-connection Protecting Device And Backup Power Supply Including The Same App 20110211286 - Pan; Qiuping ;   et al. | 2011-09-01 |
Reversal Connection Protecting Circuit App 20110141632 - MI; Yaozhong ;   et al. | 2011-06-16 |
Voltage Regulating Device for Load Starting App 20100156381 - Shi; Daming ;   et al. | 2010-06-24 |
Circuit for Controlling the Operation of a Backup Power Supply App 20100127569 - Dai; Xiangjun ;   et al. | 2010-05-27 |
Battery Array Voltage Equalization Device App 20100109607 - Zheng; Qingfei ;   et al. | 2010-05-06 |
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