Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
KL

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 51–57 of 57 patents

Patent #TitleCo-InventorsDate
8456094 Light emitting device open/short detection circuit Pei-Cheng Huang, Ming-Hsueh Lee, Shih-Hua Chien, Chao-Hua Wu 2013-06-04
8368375 Switching regulator with transient control function and control circuit and method therefor Heng-Sheng Chao 2013-02-05
8350539 Frequency modulation control of a buck-boost power converter Wen-Wei Chen 2013-01-08
8174281 Method and circuit for tracking maximum power of a photo-voltaic array Sheng-Yu Tseng, Ying Wu 2012-05-08
8064620 Driver circuit and driving method for electrostatic loudspeaker Pei-Cheng Huang, Jwin-Yen Guo 2011-11-22
7525257 Device for driving light sources 2009-04-28
7365502 Device for driving light sources Tien-Hsiang Meng, Chi-Hsiung Lee, Che-Chen Fan Chiang 2008-04-29