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 1–25 of 57 patents

Patent #TitleCo-InventorsDate
12431802 Multilevel buck converter with valley current mode control and dual slope compensation Ta-Yung Yang, Yi-Min Shiu 2025-09-30
12407248 Feedforward frequency response for resonant charge pump Ta-Yung Yang, Wei-Hsu Chang 2025-09-02
12362665 Power converter for reducing switching loss and enhancing system efficiency and control method thereof Ta-Yung Yang, Wei-Hsu Chang 2025-07-15
12273035 Control circuit and method for use in stackable multiphase power converter Ta-Yung Yang, Wei-Hsu Chang, Chao-Chi Chen 2025-04-08
12199507 Multi-phase switching converter and control method thereof Ta-Yung Yang 2025-01-14
12199516 Multi-phase switching converter and control method thereof Ta-Yung Yang 2025-01-14
12199506 Switched capacitor voltage converter circuit and control method of switched capacitor converter Ta-Yung Yang, Wei-Hsu Chang 2025-01-14
12184168 Switched capacitor voltage converter circuit and switched capacitor voltage conversion method Ta-Yung Yang, Chung-Lung Pai 2024-12-31
12176811 Switched capacitor voltage converter circuit and switched capacitor converter control method Ta-Yung Yang 2024-12-24
12136877 Switched capacitor voltage converter circuit and switched capacitor voltage conversion method Ta-Yung Yang, Wei-Hsu Chang 2024-11-05
12136876 Switched capacitor voltage converter circuit Ta-Yung Yang 2024-11-05
12136875 Switched capacitor voltage converter circuit and switched capacitor voltage conversion method Ta-Yung Yang 2024-11-05
11955884 Resonant switching power converter circuit Ta-Yung Yang, Chung-Lung Pai 2024-04-09
11742760 Resonant switching power converter and driving circuit thereof Ta-Yung Yang, Chung-Lung Pai 2023-08-29
11742751 Resonant switching power converter Ta-Yung Yang, Chung-Lung Pai 2023-08-29
11736007 Resonant switching power converter having charging/discharging duration period related to charging/discharging resonant frequency Chung-Lung Pai 2023-08-22
11716020 SCC-based DC-DC power conversion system capable of receiving switching control adjustable by output voltage thereof, and power conversion method thereof Ta-Yung Yang, Chung-Lung Pai 2023-08-01
11682966 Pipeline resonant and non-resonant switched capacitor converter circuit Ta-Yung Yang, Chung-Lung Pai 2023-06-20
11671002 Resonant switching power converter Chung-Lung Pai, Ta-Yung Yang 2023-06-06
11646654 Resonant switching power converter capable of performing discharging operation in a sequential order Ta-Yung Yang, Chung-Lung Pai 2023-05-09
11601048 Resonant switching power converter Ta-Yung Yang, Chung-Lung Pai 2023-03-07
11552547 Resonant switching power converter Ta-Yung Yang, Chung-Lung Pai 2023-01-10
11418112 Power converter Chung-Lung Pai 2022-08-16
11411493 Two-stage power converter Ta-Yung Yang, Chung-Lung Pai 2022-08-09
11382177 Heating apparatus and temperature control circuit and temperature control method thereof Chang-Yu Ho 2022-07-05