Tokyo, Japan

Fujikura Rubber Ltd.

USPTO Granted Patents = 68

% Expired Patents = 16.2


Trademarks = 7

Forward Citations = 405

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61 inventors (with patents filed for the assignee):

goldMedal Takashi Ejiri (17 out of 20 patents)

silverMedal Masaki Wakabayashi (13 out of 14 patents)

bronzeMedal 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 35 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:
Golf Club Shaft
Metal-Air Battery
FRP Drive Shaft
Pneumatically-Operated Valve
Pressure Reducing Valve
Vibration Isolation Table
Multistage Piston Actuator
Flow Regulator
Air Cylinder Apparatus
Diaphragm Type Valve
Developing Blade
Cable-Sealing Member

68 patents:

Company Overview
Fujikura Rubber Ltd., headquartered in Tokyo, Japan, specializes in the development and manufacturing of advanced materials and components, particularly in the realm of golf club shafts. The company is recognized for its innovative technologies, including metal-air batteries and various types of drive shafts. Additionally, Fujikura engages in producing specialized equipment such as pneumatically-operated valves and vibration isolation tables, showcasing its expertise across multiple engineering domains. The firm is committed to enhancing performance and functionality in its product offerings.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

68 Patents

#682 in Tokyo

#1,431 in Japan

#10,894 in the World

Tokyo, JP
Tokyo, Japan
Forward Citations = 405

61 inventors:

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Fujikura Rubber Ltd.. Retrieved from https://idiyas.com/company/fujikura-rubber

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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