Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
KW

Ko-Cheng Wang — 8 Patents

RTRichtek Technology: 8 patents #62 of 459Top 15%
Nantou, TW: #15 of 154 inventorsTop 10%
Overall (All Time): #600,572 of 4,157,543Top 15%
8 Patents All Time
Ko-Cheng Wang has been granted 8 US patents while listed as an inventor at Richtek Technology. The first was granted in 2005 and the most recent in November 2016. Ko-Cheng Wang ranks #600,572 of 4,157,543 US inventors in our database (top 14.4%). Patent records list Ko-Cheng Wang in Nantou, TW.

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
9489001 Constant on-time or constant off-time switching power converter and control circuit thereof 2016-11-08
8896319 Light emitting device control circuit and short detection circuit thereof Chia-Wei Liao 2014-11-25
8525505 PWM controller and control method for a DC-DC voltage converter Kuo-Ping Liu, Chih-Wei Tseng 2013-09-03
8294443 Overshoot/undershoot elimination for a PWM converter which requires voltage slewing Chiao Chieh Chang 2012-10-23
8222876 Power management chip with dual function pin 2012-07-17
7834606 Control circuit and method for a constant on-time PWM switching converter Kuo-Ping Liu, Liang-Pin Tai, Chung-Sheng Cheng 2010-11-16
7576588 Quick turn on apparatus and method for a NMOSFET switch Liang-Pin Tai 2009-08-18
6969980 Noise-resistant pulse width modulator Liang-Pin Tai, Kent Hwang, Jian-Rong Huang, Kuo-Ping Liu, Cheng-Hsuan Fan +1 more 2005-11-29