Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
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Kuo-Chi Liu — 57 Patents

RTRichtek Technology: 53 patents #6 of 459Top 2%
Foxconn: 2 patents #2,169 of 5,504Top 40%
Overall (All Time): #42,246 of 4,157,543Top 2%
57 Patents All Time

Issued Patents All Time

Showing 26–50 of 57 patents

Patent #TitleCo-InventorsDate
11340645 Power conversion apparatus for tracking maximum power point and control method thereof Chang-Yu Ho 2022-05-24
11283298 Resonant wireless power transmitter circuit and control circuit and control method thereof Wei-Hsin Wei, Chih-Hsien Wang 2022-03-22
11139670 Charger circuit with temperature compensation function and controller circuit thereof Chang-Yu Ho 2021-10-05
10819166 Wireless power transfer system with positioning function 2020-10-27
10819209 Multi-source energy harvester system and power conversion apparatus and method thereof Chang-Yu Ho 2020-10-27
10742072 Wireless power transmitter circuit and control circuit and control method thereof Ke-Horng Chen 2020-08-11
10680463 Resonant wireless power transmitter circuit and control circuit and control method thereof Wei-Hsin Wei, Chih-Hsien Wang 2020-06-09
10642301 Power conversion apparatus for tracking maximum power point and control method thereof Chang-Yu Ho 2020-05-05
10601252 Resonant wireless power transmitter circuit and control method thereof Wei-Hsin Wei, Chia-Hung Tsen 2020-03-24
10574092 Wireless power transmitter circuit and control circuit and control method thereof 2020-02-25
10447082 Wireless power transmitter circuit and control circuit and control method thereof 2019-10-15
9958886 Tunable DC voltage generating circuit Wei-Hsin Wei 2018-05-01
9899883 Wireless power transfer system having positioning function and positioning device and method therefor 2018-02-20
9853506 Resonant wireless power receiver circuit and control circuit and wireless power conversion method thereof Wei-Hsin Wei 2017-12-26
9853486 Resonant wireless power receiver circuit and control method thereof Wei-Hsin Wei 2017-12-26
9853505 Resonant wireless power receiver circuit and control circuit and wireless power conversion method thereof Wei-Hsin Wei 2017-12-26
9823675 Tunable DC voltage generating circuit Wei-Hsin Wei 2017-11-21
9825525 Tunable DC voltage generating circuit Wei-Hsin Wei 2017-11-21
9203295 Bleeding circuit and method for reducing power consumption of an EMI filter Yen-Te Lee, Fu-Sheng Tsai, Kuang-Feng Li, Chung-Cheng Chang, Jiun-Hung Pan +2 more 2015-12-01
9059585 Self-discharge control for an EMI filter capacitor Yen-Te Lee, Wen-Wei Chen, Yi-Fan Chen, Kuang-Feng Li 2015-06-16
8836309 Control device for buck-boost converter Wen-Wei Chen 2014-09-16
8823340 Control circuit and method for a buck-boost switching converter Wen-Wei Chen 2014-09-02
8811041 Power supply, controller thereof and control method for controlling power supply Kuang-Feng Li, I-Fan Chen, Yen-Te Lee 2014-08-19
8698476 Control circuit and method for a current mode controlled power converter Wen-Wei Chen 2014-04-15
8582322 Power reduction of a power supply unit at light loading or no loading Fu-Sheng Tsai, Chung-Cheng Chang, Kuang-Feng Li, Yen-Te Lee 2013-11-12