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Richtek Technology Corporation

USPTO Granted Patents = 836

% Expired Patents = 35.5

EPO Patents = 4

Trademarks = 6

Forward Citations = 4,294

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515 inventors (with patents filed for the assignee):

Isaac Y Chen (97 out of 101 patents)

Jing-Meng Liu (75 out of 108 patents)

Kuo-Chi Liu (58 out of 62 patents)

4. Chien-Fu Tang (57 out of 58 patents)

5. Tsung-Yi Huang (56 out of 106 patents)

6. Wei-Hsu Chang (50 out of 54 patents)

7. Shui-Mu Lin (47 out of 49 patents)

8. Ta-Yung Yang (47 out of 47 patents)

9. Tzu-Chen Lin (46 out of 48 patents)

10. Tsung-Wei Huang (44 out of 60 patents)

11. Liang-Pin Tai (44 out of 45 patents)

12. Kwan-Jen Chu (40 out of 54 patents)

13. Nien-Hui Kung (35 out of 51 patents)

14. Ta-Yung Yang (34 out of 300 patents)

15. Chung-Lung Pai (34 out of 38 patents)

Core Competencies:

Power Conversion

Switching Regulator

High Efficiency

Resonant Converter

Buck-Boost Converter

DC-to-DC Converter

Power Management

Wireless Power

EMI Filter

Voltage Regulator

Chip Packaging

Inductor Emulator

836 patents: Sort by Forward Citations

1. 12771244 - Resonant power converter, control circuit, and control method with full-wave rectified resonant current sensing (2026-10-20),

2. 12771155 - Charger circuit (2026-10-20),

3. 12771151 - Battery balancing system and battery balancing control method (2026-10-20),

4. 12763738 - Class-D amplifier (2026-10-13),

5. 12763707 - Multiphase motor driving circuit and multiphase motor driving method (2026-10-13),

6. 12763688 - Hybrid switching converter (2026-10-13),

7. 12754583 - Bandgap reference circuit with leakage current compensation (2026-10-06),

8. 12744501 - Current sense amplifier circuit and trimming method of offset referred to input voltage (2026-09-22),

9. 12740116 - Junction field effect transistor device and method of manufacturing the same (2026-09-15),

10. 12738849 - Multi-level boost power converter circuit with low power loss (2026-09-15),

11. 12732098 - Resonant power conversion circuit and control method thereof for balancing duty cycles of high-side transistor and low-side transistor (2026-09-08),

12. 12732087 - Switching converter and control circuit and discontinuous conduction mode control method thereof (2026-09-08),

13. 12726128 - Pulse width modulation control circuit having dual loops (2026-09-01),

14. 12726114 - Conversion control circuit for adjusting PFC output voltage and control method thereof (2026-09-01),

15. 12719346 - Switching power converter and control method thereof (2026-08-25),

Company Overview

Richtek Technology Corporation, headquartered in Zhubei, Taiwan, specializes in power conversion technology, focusing on high-efficiency solutions for various applications. The company develops advanced power management products, including switching regulators, resonant converters, and DC-to-DC converters, aimed at optimizing energy efficiency in electronic devices. With a commitment to innovation, Richtek plays a significant role in the evolution of wireless power technologies, catering to the growing demand for reliable and efficient power solutions in the modern electronics landscape.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

836 Patents

#1 in Zhubei

#39 in Taiwan

#1,209 in the World

Richtek Technology Corporation

Forward Citations = 4,294

515 inventors:

Isaac Y Chen (97 out of 101 patents)

Jing-Meng Liu (75 out of 108 patents)

Kuo-Chi Liu (58 out of 62 patents)

4. Chien-Fu Tang (57 out of 58 patents)

5. Tsung-Yi Huang (56 out of 106 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Richtek Technology Corporation. Retrieved from https://idiyas.com/company/richtek-technology

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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