Takashi Koyama

This inventor holds 117 USPTO granted patents and 8 published patent applications, plus 2 CIPO patents and 18 EPO patents, primarily in Fuel Cell Systems (CPC class B64D11-02). Top assignees: The Yokohama Rubber Co., Ltd., Toyota Jidosha Kabushiki Kaisha, Canon Kabushiki Kaisha. Active years: 1989-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takashi Koyama. Retrieved from https://idiyas.com/inventor/takashi-koyama

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 117 (Patent Applications = 8)

% Patents Active = 67.5

CIPO Patents = 2

EPO Patents = 18 (Patent Applications = 6)

Average Co-Inventor Count = 2.2

ph-index = 12

Forward Citations = 608(Granted Patents)

Forward Citations (Not Self Cited) = 565(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Yokahama, JP (1992)
Yokohama, JP (1990 - 1997)
Omiya, JP (1992 - 1997)
Yuki, JP (2004)
Hachioji City, Kanagawa Pref., JP (2004)
Tottori, JP (2013)
Susono, JP (2008 - 2015)
Hiratsuka, JP (1989 - 2020)
Kariya, JP (2014 - 2021)
Shenzhen, CN (2021)
Tokyo, JP (1990 - 2022)
Kanagawa, JP (1991 - 2024)
Mishima, JP (2019 - 2024)

Company Filing History:

27 out of 2,770

The Yokohama Rubber Co., Ltd.

patents

20 out of 38,912

Toyota Jidosha Kabushiki Kaisha

patents

16 out of 92,994

Canon Kabushiki Kaisha

Panasonic Intellectual Property Management Co., Ltd.

patents

6. 8 out of 1,264

Sz Dji Technology Co., Ltd.

patents

7. 7 out of 1,555

Mitsubishi Materials Corporation

Canon Marketing Japan Kabushiki Kaisha

Kabushiki Kaisha Elquest

patents

12. 2 out of 10,092

Honda Giken Kogyo Kabushiki Kaisha

patents

13. 2 out of 288

Taiho Kogyo Co., Ltd.

patents

14. 1 out of 252

Dai-Ichi Kogyo Seiyaku Co., Ltd.

patents

15. 1 out of 53,262

Kabushiki Kaisha Toshiba

patents

16. 1 out of 128

Nihon Parkerizing Co., Ltd.

patents

17. 1 out of 3,713

Nippon Steel Corporation

patents

18. 1 out of 1

Shimoda Iron Works Co., Ltd.

Tokyo University of Marine Science and Technology

patents

22. 3 out of 834,513

Other

patents

where one patent can have more than one assignee

Years Active: 1989-2025

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Areas of Expertise:

Fuel Cell System

Servo Amplifier

Aircraft Lavatory Unit

Gyrocompass

Crankshaft

Piston Ring

Electronic View Finder

Data Transmitting Device

Lens Device

Mobile Body

Photographing System

Control Apparatus

117 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12487087 - Gyrocompass (2025-12-02),

2. 12352309 - Crankshaft (2025-07-08),

3. 12188090 - Method for discriminating sex of yellowtail group (2025-01-07),

4. D1053837 - Servo amplifier (2024-12-10),

5. D1053836 - Servo amplifier (2024-12-10),

6. D1038059 - Servo amplifier (2024-08-06),

7. 12038089 - Piston ring (2024-07-16),

8. D990453 - Case for data transmitting devices (2023-06-27),

9. D970591 - Electronic view finder (2022-11-22),

10. D956728 - Data transmitting and receiving device (2022-07-05),

11. D956727 - Data transmitting device (2022-07-05),

12. 11307374 - Lens device, imaging system, movable object, and control method (2022-04-19),

13. 11194120 - Lens device, camera device, and movable body (2021-12-07),

14. 11073257 - Light amount adjustment device, imaging device, imaging system and moving object (2021-07-27),

15. 11070735 - Photographing device, photographing system, mobile body, control method and program (2021-07-20),

Title: Inventor Takashi Koyama: Pioneering Innovations in Tokyo

Introduction: Takashi Koyama is a renowned inventor based in Tokyo, Japan, known for his groundbreaking contributions to various technological fields.

Latest Patents: Takashi Koyama holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his continuous commitment to innovation.

Career Highlights: With over two decades of experience in the industry, Koyama has worked with leading research institutions and universities to develop cutting-edge solutions that have revolutionized the way we approach complex challenges.

Collaborations: Throughout his career, Takashi Koyama has collaborated with top companies, such as tech giants and automotive manufacturers, to bring his inventions to the market, further solidifying his reputation as a visionary inventor.

Conclusion: Takashi Koyama's passion for innovation and his relentless pursuit of excellence have established him as a key figure in the world of technology, inspiring future generations of inventors to push the boundaries of what is possible.

Profile summary based on public USPTO records.