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Tsuyama Mfg. Co., Ltd.

USPTO Granted Patents = 24

Trademarks = 3

Forward Citations = 428

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9 inventors (with patents filed for the assignee):

Sadaharu Tsuyama (14 out of 20 patents)

Joe K Kagayama (3 out of 9 patents)

Masaaki Matsumoto (2 out of 7 patents)

4. Takashi Uyeda (2 out of 2 patents)

5. Takashi Ueda (1 out of 90 patents)

6. Hachiro Maeyama (1 out of 4 patents)

7. Kenzo Shiba (1 out of 1 patent)

8. Jo Kagayama (1 out of 1 patent)

9. Yoshimasa Tsuyama (1 out of 1 patent)

24 patents: Sort by Forward Citations

1. D319988 - Bicycle meter (1991-09-17),

2. D319597 - Bicycle meter (1991-09-03),

3. D310697 - Bicycle exerciser (1990-09-18),

4. 4929825 - Means for detecting damage to the card connecting the photosensor and (1990-05-29),

5. 4898379 - Cycle trainer having a load applying device (1990-02-06),

6. D299371 - Bicycle exercise (1989-01-10),

7. 4775145 - Load applying means for an exercise device (1988-10-04),

8. D288542 - Computerized multiple function bicycle meter (1987-03-03),

9. 4642606 - Data display unit for a bicycle (1987-02-10),

10. D287946 - Computerized multiple function bicycle meter (1987-01-27),

11. D287887 - Bicycle head light (1987-01-20),

12. 4636769 - Data display unit for a bicycle (1987-01-13),

13. 4633216 - Data display unit for a bicycle (1986-12-30),

14. 4597031 - Lighting fixture for bicycles and the like vehicles (1986-06-24),

15. 4586113 - Lamp for bicycle (1986-04-29),

Tsuyama Mfg. Co., Ltd. is a leading manufacturer of automotive components based in Japan. With over 50 years of experience in the industry, we specialize in producing high-quality engine parts, exhaust systems, and suspension components. Our commitment to innovation and quality has earned us a reputation for excellence among our customers worldwide.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

24 Patents

#252 in Osaka

#2,580 in Japan

#25,857 in the World

Tsuyama Mfg. Co., Ltd.

Forward Citations = 428

9 inventors:

Sadaharu Tsuyama (14 out of 20 patents)

Joe K Kagayama (3 out of 9 patents)

Masaaki Matsumoto (2 out of 7 patents)

4. Takashi Uyeda (2 out of 2 patents)

5. Takashi Ueda (1 out of 90 patents)

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