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For the Inventor, By the Inventor

Tokyo, Japan

Oiles Corporation

USPTO Granted Patents = 274

% Expired Patents = 17.2



Trademarks = 9

Forward Citations = 1,335

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257 inventors (with patents filed for the assignee):

goldMedal Ryohei Kaneko (35 out of 35 patents)

silverMedal Akihiko Okimura (23 out of 23 patents)

bronzeMedal Yoshiteru Igarashi (22 out of 22 patents)

4.  Kouichi Morishige (22 out of 23 patents)

5.  Shuichi Kubota (18 out of 22 patents)

6.  Katsunori Saito (15 out of 15 patents)

7.  Noboru Nakagawa (14 out of 14 patents)

8.  Takashi Horiguchi (14 out of 23 patents)

9.  Masamitsu Kojima (14 out of 16 patents)

10.  Kouhei Kurose (13 out of 13 patents)

11.  Ikuo Shimoda (13 out of 16 patents)

12.  Naohiro Horita (12 out of 12 patents)

13.  Hidetoshi Kaida (11 out of 11 patents)

14.  Yoshikazu Sakairi (10 out of 10 patents)

15.  Tadashi Watai (10 out of 10 patents)


Core Competencies:
Sliding Bearings
Rotary Dampers
Resin Compositions
Rack Guides
Thrust Bearings
Seismic Isolation
Lubricants
Automotive Steering
Aluminum Bronze Alloys
Spherical Seals
Friction Dampers
Multi-layered Components

274 patents:

1. 12768308 - Butterfly valve (2026-10-20),
2. 12746591 - Floating cutter unit and trimming press processing device (2026-09-29),
3. 12584005 - Resin composition for sliding member, and sliding member (2026-03-24),
4. 12583506 - Rack guide and gear mechanism (2026-03-24),
5. 12583505 - Rack guide (2026-03-24),
6. 12571073 - Aluminum bronze alloy and sliding member using said alloy (2026-03-10),
7. 12485953 - Rack guide (2025-12-02),
8. 12480068 - Grease composition and rack-and-pinion-type steering device filled with the same grease composition (2025-11-25),
9. 12429090 - Gas restriction structure constituting aerostatic bearing, and aerostatic bearing (2025-09-30),
10. 12292097 - Rotary damper (2025-05-06),
11. 12173752 - Resin composition for sliding member, and sliding member (2024-12-24),
12. 12162455 - Rotary damper, and brake system (2024-12-10),
13. 11878741 - Multi-layer sliding member and automobile rack-and-pinion steering apparatus using same (2024-01-23),
14. 11878740 - Rack bushing and steering device (2024-01-23),
15. 11872618 - Floating cutter unit and trimming press processing device (2024-01-16),
Company Overview
Oiles Corporation, headquartered in Tokyo, specializes in the development and manufacturing of advanced sliding bearings and related technologies. The company focuses on a diverse range of core technology topics, including rotary dampers, resin compositions, and thrust bearings, catering to various industries such as automotive engineering. Oiles is also recognized for its innovations in seismic isolation and lubricants, enhancing the performance and reliability of mechanical systems across multiple applications.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

274 Patents

#288 in Tokyo

#566 in Japan

#3,218 in the World

Tokyo, JP
Tokyo, Japan

Oiles Corporation

Forward Citations = 1,335

257 inventors:

goldMedal Ryohei Kaneko (35 out of 35 patents)

silverMedal Akihiko Okimura (23 out of 23 patents)

bronzeMedal Yoshiteru Igarashi (22 out of 22 patents)

4.  Kouichi Morishige (22 out of 23 patents)

5.  Shuichi Kubota (18 out of 22 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Oiles Corporation. Retrieved from https://idiyas.com/company/oiles

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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