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Richmond, Canada

General Hydrogen Corporation

USPTO Granted Patents = 12

% Expired Patents = 66.7

Forward Citations = 178

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18 inventors (with patents filed for the assignee):

John David Trevor Graham (7 out of 7 patents)

Alan John Mulvenna (6 out of 7 patents)

William Edward Mufford (4 out of 4 patents)

4. David Michael Routtenberg (2 out of 2 patents)

5. Joachim George Borck (2 out of 2 patents)

6. Keguang Yao (2 out of 2 patents)

7. Matthew Albert MacLennan Harper (1 out of 3 patents)

8. Mark Andrew Timmerman (1 out of 2 patents)

9. James G Ko (1 out of 3 patents)

10. Edward Wing Ping Li (1 out of 1 patent)

11. Henrik Thorning Christensen (1 out of 1 patent)

12. Bruce Stephen Jenner (1 out of 1 patent)

13. Curtis Michael Robin (1 out of 1 patent)

14. Darren Scott Sokoloski (1 out of 1 patent)

15. Xin Wang (1 out of 63 patents)

12 patents: Sort by Forward Citations

1. 12405207 - System and method for testing durability of gas diffusion layer (GDL) (2025-09-02),

2. 12051813 - Gas diffusion layer and method for preparing same (2024-07-30),

3. 7477505 - Capacitor bank for electrical generator (2009-01-13),

4. 6822551 - System for communication with a vehicle in close proximity to a fixed service port (2004-11-23),

5. 6817879 - Service port configurations (2004-11-16),

6. 6810925 - Hydrogen fueling station (2004-11-02),

7. 6779568 - Gas distribution system (2004-08-24),

8. 6722903 - Service plug configuration (2004-04-20),

9. D487931 - Fuel storage enclosure (2004-03-31),

10. D487807 - Fuel storage enclosure (2004-03-24),

11. 6691749 - Service coupling (2004-02-17),

12. 6619342 - Wheel stop service port (2003-09-16),

General Hydrogen Corporation is a technology company based in Richmond, California, specializing in the development and manufacturing of hydrogen fuel cell systems. The organization focuses on advancing clean energy solutions, particularly in the transportation sector, by creating efficient and sustainable hydrogen-powered vehicles. With a commitment to innovation, General Hydrogen is dedicated to enhancing the adoption of hydrogen technology, contributing to a greener future and reducing reliance on fossil fuels.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

12 Patents

#10 in Richmond

#1,265 in Canada

#48,129 in the World

Richmond, Canada

General Hydrogen Corporation

Forward Citations = 178

18 inventors:

John David Trevor Graham (7 out of 7 patents)

Alan John Mulvenna (6 out of 7 patents)

William Edward Mufford (4 out of 4 patents)

4. David Michael Routtenberg (2 out of 2 patents)

5. Joachim George Borck (2 out of 2 patents)

Please report any incorrect information to [email protected]

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