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For the Inventor, By the Inventor

Hong Kong, China

Defond Components Limited


USPTO Granted Patents = 62


Forward Citations = 270

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59 inventors (with patents filed for the assignee):

goldMedal Kin Yu Wong (12 out of 17 patents)

silverMedal Cheng Chen Nieh (10 out of 12 patents)

bronzeMedal Wai Man Wong (7 out of 10 patents)

4.  Chiu Keung Loong (5 out of 6 patents)

5.  Kai Kei Poon (5 out of 5 patents)

6.  Kai Chi Chan (5 out of 8 patents)

7.  Ming Leong Kong (3 out of 4 patents)

8.  Man Yin Arthur Newton Chu (3 out of 4 patents)

9.  Man Ting Ho (3 out of 3 patents)

10.  Wai Cheong Wilson Chu (2 out of 3 patents)

11.  Tak Chuen Richard Or (2 out of 3 patents)

12.  Lap Yi Law (2 out of 2 patents)

13.  Nelson Man Hoi Lui (2 out of 6 patents)

14.  Chi Ming Lai (2 out of 2 patents)

15.  Yun Zhang (2 out of 3 patents)


Core Competencies:
Control Assembly
Electric Power Tool
Touch Control Interface
Lock-off Mechanism
Variable-speed Control
Brushless DC Motor
Electrical Switch
Trigger Mechanism
Snap-action Switch
Battery Pack System
Waterproof Toggle Switch
Electromagnetic Valve

62 patents:

1. 11975434 - Control assembly for use with an electric power tool (2024-05-07),
2. 11913812 - Control assembly for use in operation of an electric device (2024-02-27),
3. 11907449 - Control knob with motion sensing for controlling operation of a machine (2024-02-20),
4. 11823856 - Contact lever assembly for use with an electrical switch (2023-11-21),
5. 11694862 - Lock-off mechanism for locking-off a trigger assembly of an electric device (2023-07-04),
6. 11664710 - Variable-speed control assembly for an electric device (2023-05-30),
7. 11623335 - Control assembly for use in operation of an electric device (2023-04-11),
8. 11489523 - Touch control human machine interface (2022-11-01),
9. D965536 - Touch LED component (2022-10-04),
10. 11464112 - Touch LED component and touch device (2022-10-04),
11. 11431172 - Control system for use in controlling operation of an electrical appliance (2022-08-30),
12. 11367577 - Locking system for use with a trigger assembly of an electrical device (2022-06-21),
13. 11257639 - Snap-action switch and method of assembling same (2022-02-22),
14. 11112817 - Control stick (2021-09-07),
15. 11011327 - Rotary bridge micro-switch (2021-05-18),
DEFOND COMPONENTS LIMITED is a leading global manufacturer of high-quality electronic components and automotive switches. With over 40 years of industry experience, DEFOND has established itself as a trustworthy partner for various industries, including automotive, industrial, consumer electronics, and more. The company is committed to delivering innovative solutions, advanced manufacturing capabilities, and exceptional customer service.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 2 2025

62 Patents

#51 in Hong Kong

#468 in China

#11,335 in the World

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Hong Kong, China

Defond Components Limited

Forward Citations = 270

59 inventors:

goldMedal Kin Yu Wong (12 out of 17 patents)

silverMedal Cheng Chen Nieh (10 out of 12 patents)

bronzeMedal Wai Man Wong (7 out of 10 patents)

4.  Chiu Keung Loong (5 out of 6 patents)

5.  Kai Kei Poon (5 out of 5 patents)

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