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For the Inventor, By the Inventor

Tokyo, Japan

Oiles Corporation


USPTO Granted Patents = 272

% Expired Patents = 17.3



Trademarks = 9

Forward Citations = 1,335

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255 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

272 patents:

1. 12584005 - Resin composition for sliding member, and sliding member (2026-03-24),
2. 12583506 - Rack guide and gear mechanism (2026-03-24),
3. 12583505 - Rack guide (2026-03-24),
4. 12571073 - Aluminum bronze alloy and sliding member using said alloy (2026-03-10),
5. 12485953 - Rack guide (2025-12-02),
6. 12480068 - Grease composition and rack-and-pinion-type steering device filled with the same grease composition (2025-11-25),
7. 12429090 - Gas restriction structure constituting aerostatic bearing, and aerostatic bearing (2025-09-30),
8. 12292097 - Rotary damper (2025-05-06),
9. 12173752 - Resin composition for sliding member, and sliding member (2024-12-24),
10. 12162455 - Rotary damper, and brake system (2024-12-10),
11. 11878741 - Multi-layer sliding member and automobile rack-and-pinion steering apparatus using same (2024-01-23),
12. 11878740 - Rack bushing and steering device (2024-01-23),
13. 11872618 - Floating cutter unit and trimming press processing device (2024-01-16),
14. 11577298 - Floating cutter unit and trimming press processing device (2023-02-14),
15. 11548546 - Bearing and steering mechanism (2023-01-10),
OILES CORPORATION is a leading manufacturer of high-performance, maintenance-free self-lubricated bearings and precision-molded products. With over 60 years of experience, OILES delivers innovative solutions to various industries, including automotive, industrial machinery, construction, and aerospace. Our products offer superior reliability, extended product life, and reduced maintenance costs. We are committed to providing exceptional customer service and contributing to a sustainable future through our environmentally-friendly products and manufacturing processes.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Sep 15 2026

272 Patents

#289 in Tokyo

#568 in Japan

#3,214 in the World

Tokyo, JP
Tokyo, Japan

Oiles Corporation

Forward Citations = 1,335

255 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)

Please report any incorrect information to [email protected]
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