logo

For the Inventor, By the Inventor

Komaki-shi, Japan

Tokai Rubber Industries, Ltd.

Calculating rank
USPTO Granted Patents = 720

% Expired Patents = 25.7



Forward Citations = 6,697

Loading Chart...
Loading Chart...

549 inventors (with patents filed for the assignee):

goldMedal Atsushi Muramatsu (53 out of 60 patents)

silverMedal Rentaro Kato (34 out of 41 patents)

bronzeMedal Kazuhiko Kato (33 out of 34 patents)

4.  Hiroaki Ito (32 out of 34 patents)

5.  Kazutaka Katayama (31 out of 37 patents)

6.  Masaaki Hamada (27 out of 30 patents)

7.  Atsuo Miyajima (26 out of 31 patents)

8.  Ryouji Kanda (26 out of 27 patents)

9.  Hiroyuki Ichikawa (24 out of 55 patents)

10.  Kazushige Sakazaki (20 out of 22 patents)

11.  Hajime Maeno (20 out of 20 patents)

12.  Katsuhiro Goto (20 out of 21 patents)

13.  Ayumu Ikemoto (18 out of 19 patents)

14.  Yoshiki Funahashi (18 out of 18 patents)

15.  Akira Takayanagi (17 out of 17 patents)


Core Competencies:
Vibration Damping Device
Fluid-Filled Type
Fuel Cell
Polymer Speaker
Rubber Composition
Electrophotographic Equipment
Automotive Hose
Active Noise Cancellation
Heat-Resistant Hose
Electromagnetic Actuator
Modified Natural Rubber
Connector

720 patents:

1. 9797354 - Fuel line joint (2017-10-24),
2. 9068625 - Fluid-filled type vibration damping device (2015-06-30),
3. 9027912 - Vibration damping device (2015-05-12),
4. 8979082 - Vibration damping bushing and manufacturing method thereof (2015-03-17),
5. 8974982 - Fuel cell, fuel cell stack, and method for manufacturing fuel cell (2015-03-10),
6. 8958581 - Polymer speaker (2015-02-17),
7. 8913931 - Developing roll for electrophotographic machine (2014-12-16),
8. 8894079 - Upper support for vehicle suspension (2014-11-25),
9. 8890649 - Bending sensor and deformed shape measurement method (2014-11-18),
10. 8882090 - Fluid-filled type vibration damping device (2014-11-11),
11. 8867972 - Development roll for electrophotographic equipment (2014-10-21),
12. 8865280 - Fuel hose and method for producing the same (2014-10-21),
13. 8857800 - Tank rubber cushion (2014-10-14),
14. 8822131 - Flexographic printing plate precursor (2014-09-02),
15. 8813924 - Manufacturing method for upper support and upper support (2014-08-26),
Company Overview
Tokai Rubber Industries, Ltd. is a prominent Japanese company specializing in the development and manufacturing of advanced vibration damping devices. With a focus on innovative technologies, the company produces fluid-filled types of damping systems, polymer speakers, and components for fuel cells. Tokai Rubber also engages in the creation of automotive hoses and electrophotographic equipment, contributing to various sectors including automotive engineering and noise control solutions. Their expertise in rubber composition and active noise cancellation further underscores their commitment to enhancing product performance and user experience.
Profile summary synthesized from public USPTO records and patent filings.

logo

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

720 Patents

#1 in Komaki-shi

#286 in Japan

#1,385 in the World

Komaki-shi, JP
Komaki-shi, Japan

Tokai Rubber Industries, Ltd.

Forward Citations = 6,697

549 inventors:

goldMedal Atsushi Muramatsu (53 out of 60 patents)

silverMedal Rentaro Kato (34 out of 41 patents)

bronzeMedal Kazuhiko Kato (33 out of 34 patents)

4.  Hiroaki Ito (32 out of 34 patents)

5.  Kazutaka Katayama (31 out of 37 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tokai Rubber Industries, Ltd.. Retrieved from https://idiyas.com/company/tokai-rubber-industries

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]
Loading…