For the Inventor, By the Inventor

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Hangzhou, China

Joulwatt Technology Co., Ltd.

USPTO Granted Patents = 42

Trademarks = 4

Forward Citations = 4

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25 inventors (with patents filed for the assignee):

Pitleong Wong (12 out of 40 patents)

Xiangyong Xu (8 out of 9 patents)

Guoqiang Liu (7 out of 12 patents)

4. Guangtao Han (4 out of 5 patents)

5. Aimin Xu (4 out of 4 patents)

6. Wanyue He (4 out of 4 patents)

7. Mengyi Huang (3 out of 3 patents)

8. Hao Long (2 out of 6 patents)

9. Xianghua Jiang (2 out of 4 patents)

10. Yingyan He (2 out of 4 patents)

11. Yang Yang (2 out of 20 patents)

12. Zhiyong Su (2 out of 2 patents)

13. Duo Li (2 out of 2 patents)

14. Jianyu Xie (2 out of 2 patents)

15. Min Xu (1 out of 21 patents)

Core Competencies:

Lighting Circuit

Inductor Fabrication

Flyback Converter

Power Conversion Circuit

LED Driver Circuit

Switched-Mode Power Supply

Dynamic Automotive Turn Signal

Analog-to-Digital Converter

Dimming Circuit

Electrostatic Protection Device

Semiconductor Device

Frequency Regulating Circuit

42 patents: Sort by Forward Citations

1. 12484121 - Lighting circuit and control method thereof (2025-11-25),

2. 12483148 - Flyback converter with high efficiency and control method thereof (2025-11-25),

3. 12482598 - Inductor, inductor fabrication method, and power supply circuit containing inductor (2025-11-25),

4. 12477633 - Power conversion circuit for quick response and switching power supply (2025-11-18),

5. 12471194 - Driving control circuit of power transistor, lighting control circuit and lighting circuit (2025-11-11),

6. 12470068 - Power supply system control method and power supply system (2025-11-11),

7. 12451891 - Switching frequency synchronization circuit, method therefor and switching power supply (2025-10-21),

8. 12444343 - LED driver circuit, multi-wire communication device and method for LED display system (2025-10-14),

9. 12431786 - Control circuit and control method for switched capacitor converter (2025-09-30),

10. 12407249 - Supply circuit and switched mode power supply (2025-09-02),

11. 12396266 - Electrostatic protection device including scr and manufacturing method thereof (2025-08-19),

12. 12348241 - Successive approximation analog-to-digital converter, analog-to-digital conversion method and device applying in the same (2025-07-01),

13. 12317382 - Dimming method and dimming circuit (2025-05-27),

14. 12308748 - Control method and control circuit of switched-mode power supply, and switched-mode power supply (2025-05-20),

15. 12294301 - Power supply circuit and light-emitting diode (LED) driving system using power supply circuit (2025-05-06),

Joulwatt Technology Co., Ltd. is a leading provider of innovative energy solutions. Specializing in renewable energy technologies, we offer a wide range of products and services including solar panels, wind turbines, and energy storage systems. Our mission is to help businesses and individuals reduce their carbon footprint and save on energy costs. With a team of experienced engineers and a commitment to sustainability, Joulwatt Technology Co., Ltd. is the go-to choice for clean energy solutions.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

42 Patents

#17 in Hangzhou

#684 in China

#15,867 in the World

Hangzhou, China

Joulwatt Technology Co., Ltd.

Forward Citations = 4

25 inventors:

Pitleong Wong (12 out of 40 patents)

Xiangyong Xu (8 out of 9 patents)

Guoqiang Liu (7 out of 12 patents)

4. Guangtao Han (4 out of 5 patents)

5. Aimin Xu (4 out of 4 patents)

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