Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Alpha J. Zhang — 22 Patents

DEDelta Electronics: 22 patents #44 of 2,746Top 2%
Shanghai, CN: #358 of 19,267 inventorsTop 2%
Overall (All Time): #189,202 of 4,157,543Top 5%
22 Patents All Time
Alpha J. Zhang has been granted 22 US patents while listed as an inventor at Delta Electronics. The first was granted in 2002 and the most recent in January 2025. Alpha J. Zhang ranks #189,202 of 4,157,543 US inventors in our database (top 4.6%). Patent records list Alpha J. Zhang in Shanghai, CN.

Issued Patents All Time

Showing 1–22 of 22 patents

Patent #TitleCo-InventorsDate
RE50277 Power converter and method of control thereof Haibin Song, Laszlo Huber, Daofei Xu, Milan M. Jovanovic, Chien-Chung Chang 2025-01-21
10141853 Power converter and method of control thereof Haibin Song, Laszlo Huber, Daofei Xu, Milan M. Jovanovic, Chien-Chung Chang 2018-11-27
7518263 Time delay control scheme for a power supply with multiple outputs Hongjian Gan, Huijie Xue, Chaoqun Sun 2009-04-14
7106130 Variable frequency PWM controller circuit Hongjian Gan, Bo Wang 2006-09-12
7034513 Power supply having efficient low power standby mode Hongjian Gan, Qinggang Kong, Jian Chang 2006-04-25
7006364 Driving circuit for DC/DC converter Bin Jin, Zhongwei Ke, Yahong Xiong 2006-02-28
6987679 Multiple output converter with improved cross regulation Hongjian Gan, Sen Dou, Alex Jong, Chanwit Prasantanakorn 2006-01-17
6947297 Active resonant snubber for DC-DC converter Zhongwei Ke, Yahong Xiong, Bin Jin 2005-09-20
6912143 Synchronous rectifier with burst mode control Hong Gan, Yao-Jian Huang, Yi-An Chen 2005-06-28
6853568 Isolated voltage regulator with one core structure Wenhua Li, Zhongwei Ke, Guisong Huang 2005-02-08
6807071 Transformer isolated driver Bo Wang, Hongjian Gan 2004-10-19
6771521 Active snubber for synchronous rectifier Yahong Xiong, Zhongwei Ke 2004-08-03
6724631 Power converter package with enhanced thermal management Runqing Ye 2004-04-20
6714428 Combined transformer-inductor device for application to DC-to-DC converter with synchronous rectifier Guisong Huang, Yilei Gu, Yuequan Hu, Jack Hsiao 2004-03-30
6639814 Constant voltage reset circuit for forward converter Hongjian Gan, Zhongwei Ke, Chaoqun Sun 2003-10-28
6538906 Energy storage circuit for DC-DC converter Zhongwei Ke, Bin Jin 2003-03-25
6469915 Resonant reset dual switch forward DC-to-DC converter Guisong Huang, Yilei Gu, Zhizheng Liu 2002-10-22
6466458 Asymmetrical full bridge DC-to-DC converter Guisong Huang, Yilei Gu 2002-10-15
6424543 Integral DC to DC converter Guisong Huang, Yilei Gu 2002-07-23
6396715 DC to DC converter for operating in selectable voltage modes Guisong Huang, Yilei Gu 2002-05-28
6370044 Synchronous rectifier circuit Guisong Huang, Yilei Gu 2002-04-09
6344979 LLC series resonant DC-to-DC converter Guisong Huang, Yilei Gu 2002-02-05