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Guangdong, China

Defond Electech Co., Ltd

USPTO Granted Patents = 40

% Expired Patents = 2.5

EPO Patents = 12

Trademarks = 9

Forward Citations = 29

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34 inventors (with patents filed for the assignee):

Cheng Chen Nieh (12 out of 12 patents)

Kin Yu Wong (10 out of 17 patents)

Wai Man Wong (9 out of 10 patents)

4. Kai Kei Poon (5 out of 5 patents)

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

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

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

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

9. Xiao Yu Lai (2 out of 2 patents)

10. Hua Lin Pan (2 out of 2 patents)

11. Lap Yi Law (2 out of 2 patents)

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

13. Yun Zhang (2 out of 3 patents)

14. Lei Zhang (2 out of 9 patents)

15. Guo Zhu Zeng (2 out of 2 patents)

Core Competencies:

Electrical Switch

Control Assembly

Snap-Action Switch

Touch Control

Variable-Speed Control

Lock-off Mechanism

Rotary Bridge Micro-Switch

Detection Circuit Module

Brushless DC Motor

Control Knob

Trigger Assembly

Waterproof Toggle Switch

40 patents: Sort by Forward Citations

1. 12362109 - Electrical switch with a sealing member for use with an electrical device (2025-07-15),

2. 12205787 - Snap-action type switch (2025-01-21),

3. 12183533 - Linkage structure of key switch (2024-12-31),

4. 11975434 - Control assembly for use with an electric power tool (2024-05-07),

5. 11919137 - Control assembly for use in operation of an electric device (2024-03-05),

6. 11913812 - Control assembly for use in operation of an electric device (2024-02-27),

7. 11907449 - Control knob with motion sensing for controlling operation of a machine (2024-02-20),

8. 11823856 - Contact lever assembly for use with an electrical switch (2023-11-21),

9. 11694862 - Lock-off mechanism for locking-off a trigger assembly of an electric device (2023-07-04),

10. 11664710 - Variable-speed control assembly for an electric device (2023-05-30),

11. 11651915 - Electrical switch device (2023-05-16),

12. 11623335 - Control assembly for use in operation of an electric device (2023-04-11),

13. 11489523 - Touch control human machine interface (2022-11-01),

14. D965536 - Touch LED component (2022-10-04),

15. 11464112 - Touch LED component and touch device (2022-10-04),

Company Overview

Defond Electech Co., Ltd, based in Guangdong, China, specializes in the development and manufacturing of advanced electrical components. The company focuses on a diverse range of technologies, including electrical switches, control assemblies, and snap-action switches, which are integral to various applications across industries. Additionally, Defond is known for its innovations in touch control interfaces, variable-speed controllers, and locking mechanisms, as well as brushless DC motors and detection circuit modules, positioning itself as a key player in the electrical engineering sector.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

40 Patents

#8 in Guangdong

#789 in China

#17,048 in the World

Guangdong, China

Defond Electech Co., Ltd

Forward Citations = 29

34 inventors:

Cheng Chen Nieh (12 out of 12 patents)

Kin Yu Wong (10 out of 17 patents)

Wai Man Wong (9 out of 10 patents)

4. Kai Kei Poon (5 out of 5 patents)

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

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Defond Electech Co., Ltd. Retrieved from https://idiyas.com/company/defond-electech-company

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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