Kuo-Chi Liu has been granted 57 US patents while listed as an inventor at Richtek Technology . The first was granted in 2008 and the most recent in September 2025. Kuo-Chi Liu ranks #42,642 of 4,157,543 US inventors in our database (top 1.0%). Patent records list Kuo-Chi Liu in Hsinchu, TW.
Patents per Year Patents granted per year, 2008 to 2025 Bar chart with a peak of 9 patents in 2023. peak 9 2008: 1 patents 2008 2009: 1 patents 2011: 1 patents 2011 2012: 1 patents 2013: 4 patents 2013 2014: 4 patents 2015: 2 patents 2015 2017: 5 patents 2018: 2 patents 2018 2019: 1 patents 2020: 7 patents 2020 2021: 1 patents 2022: 5 patents 2022 2023: 9 patents 2024: 6 patents 2024 2025: 7 patents 2025 Issued Patents All Time
Showing 1–25 of 57 patents
Patent # Title Co-Inventors Date
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
