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Hong Kong, China

Defond Components Limited

USPTO Granted Patents = 62

% Expired Patents = 12.9

EPO Patents = 20

Forward Citations = 289

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51 inventors (with patents filed for the assignee):

Kin Yu Wong (12 out of 17 patents)

Cheng Chen Nieh (10 out of 12 patents)

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 Device

Trigger Mechanism

Electrical Appliance

Touch Control

Variable-Speed Control

Lock-off Mechanism

Snap-Action Switch

Brushless DC Motor

Power Tool Safety

Detection Circuit

Waterproof Toggle Switch

62 patents: Sort by Forward Citations

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),

Company Overview

Defond Components Limited is a Hong Kong-based company specializing in electrical switch technology. The organization focuses on the development and manufacturing of a wide range of control assemblies and electric devices, including innovative trigger mechanisms and touch control systems. Defond is recognized for its expertise in variable-speed control solutions and lock-off mechanisms, catering to various electrical appliances. The company's commitment to quality and innovation positions it as a key player in the electrical components industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

62 Patents

#48 in Hong Kong

#525 in China

#11,761 in the World

Hong Kong, China

Defond Components Limited

Forward Citations = 289

51 inventors:

Kin Yu Wong (12 out of 17 patents)

Cheng Chen Nieh (10 out of 12 patents)

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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Defond Components Limited. Retrieved from https://idiyas.com/company/defond-components

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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