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Fujikura Rubber Ltd.

USPTO Granted Patents = 68

EPO Patents = 7

Trademarks = 11

Forward Citations = 392

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61 inventors (with patents filed for the assignee):

Takashi Ejiri (17 out of 20 patents)

Masaki Wakabayashi (13 out of 14 patents)

Norio Matsumoto (13 out of 19 patents)

4. Masakuni Kainuma (11 out of 11 patents)

5. Toshikazu Aoki (9 out of 9 patents)

6. Takato Nakamura (7 out of 7 patents)

7. Ryozo Ariizumi (7 out of 7 patents)

8. Masaki Takahashi (7 out of 34 patents)

9. Tsutomu Narita (6 out of 8 patents)

10. Hiroshi Sakama (6 out of 9 patents)

11. Mitsunori Hoshi (6 out of 6 patents)

12. Yoshihito Kogawa (5 out of 7 patents)

13. Yoshiharu Nakajima (5 out of 102 patents)

14. Shoji Suda (5 out of 5 patents)

15. Naoki Kimoto (4 out of 4 patents)

Core Competencies:

Metal-Air Battery

Golf Club Shaft

FRP Drive Shaft

Multistage Piston Actuator

Air Cylinder Apparatus

Fluid Control Valve

Pressure Reducing Valve

Vibration Isolation Device

Developing Blade

Rubber Processing

Air-Spring Vibration Isolation

Cable-Sealing Member

68 patents: Sort by Forward Citations

1. 10763559 - Metal-air battery (2020-09-01),

2. 10749230 - Metal-air battery unit and metal-air battery (2020-08-18),

3. 10411226 - Metal-air battery (2019-09-10),

4. 10406412 - Golf club shaft and golf club (2019-09-10),

5. 10138925 - FRP drive shaft (2018-11-27),

6. D823238 - Battery (2018-07-17),

7. 10022603 - Golf club shaft and golf club provided with the same (2018-07-17),

8. D822603 - Battery cover (2018-07-10),

9. D820200 - Battery (2018-06-12),

10. 9995322 - Multistage piston actuator (2018-06-12),

11. 9982692 - Air cylinder apparatus equipped with fall prevention mechanism, and fall prevention mechanism for air cylinder apparatus (2018-05-29),

12. 9878225 - Golf club shaft and golf club using the same (2018-01-30),

13. 9371933 - Flow regulator (2016-06-21),

14. 9150207 - Diaphragms for vehicle brakes (2015-10-06),

15. 9108133 - Air-permeable water non-permeable device (2015-08-18),

FUJIKURA RUBBER LTD. is a global manufacturer and distributor of rubber products. With a rich history of over 50 years, the company specializes in producing high-quality rubber parts for various industries including automotive, electronics, and industrial machinery. Their dedication to excellence and continuous innovation has enabled them to become a trusted partner for customers worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

68 Patents

#593 in Tokyo

#1,400 in Japan

#10,601 in the World

Fujikura Rubber Ltd.

Forward Citations = 392

61 inventors:

Takashi Ejiri (17 out of 20 patents)

Masaki Wakabayashi (13 out of 14 patents)

Norio Matsumoto (13 out of 19 patents)

4. Masakuni Kainuma (11 out of 11 patents)

5. Toshikazu Aoki (9 out of 9 patents)

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