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For the Inventor, By the Inventor

Tokyo, Japan

Nok Corporation


USPTO Granted Patents = 776



Trademarks = 31

Forward Citations = 4,069

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1,136 inventors (with patents filed for the assignee):

goldMedal Kenji Sasaki (28 out of 32 patents)

silverMedal Shigeru Watanabe (26 out of 107 patents)

bronzeMedal Hiroki Matsui (21 out of 21 patents)

4.  Hajime Yui (19 out of 19 patents)

5.  Koji Watanabe (18 out of 93 patents)

6.  Takehiro Nakagawa (17 out of 34 patents)

7.  Toshihiro Higashira (17 out of 17 patents)

8.  Katsumi Abe (16 out of 16 patents)

9.  Shinya Nakaoka (16 out of 17 patents)

10.  Yoshiyuki Abe (15 out of 15 patents)

11.  Masayuki Tanida (14 out of 14 patents)

12.  Kenichi Oba (14 out of 14 patents)

13.  Yoshihiro Kurano (14 out of 14 patents)

14.  Toshihiro Shimazoe (13 out of 13 patents)

15.  Isao Tanji (13 out of 13 patents)


Core Competencies:
Biological Electrode
Sealing Device
Vibration Damper
Rubber Composition
Gasket Manufacturing
Conductive Roller
Hydrogenated NBR Composition
Torsional Damper
Welding Jig Device
Cushioning Rubber
Seal Structure
Image Forming Apparatus

776 patents:

1. 12446815 - Biological electrode (2025-10-21),
2. 12442418 - Sealing device and sealing structure (2025-10-14),
3. 12410307 - NBR composition (2025-09-09),
4. 12403637 - Molding die for molding an endless-shaped gasket made of an elastic material along a surface of a plate-like base material (2025-09-02),
5. 12372148 - Torsional damper (2025-07-29),
6. 12359726 - Method of manufacturing hub seal (2025-07-15),
7. 12352331 - Vibration damper, vibration damping apparatus, mounting method of vibration damper, and vibration damping method (2025-07-08),
8. 12345310 - Sealing device (2025-07-01),
9. 12343958 - Rubber-metal laminate and gasket (2025-07-01),
10. 12326192 - Gasket (2025-06-10),
11. 12319762 - Olefin-based rubber composition (2025-06-03),
12. 12313164 - Sealing device (2025-05-27),
13. 12311477 - Welding jig device and method for producing part (2025-05-27),
14. 12311471 - Welding jig device and method for producing part (2025-05-27),
15. 12305760 - Sealing device and method for manufacturing sealing device (2025-05-20),
NOK Corporation, founded in 1941, is a Japanese company engaged in the manufacturing and sales of various industrial sealing products. NOK specializes in producing seals, o-rings, gaskets, and other related equipment for a wide range of industries including automotive, semiconductor, oil and gas, and aerospace. With a global presence, NOK Corporation is committed to providing high-quality sealing solutions that meet the evolving needs of its customers worldwide.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 9 2025

...
776 Patents

#117 in

#264 in

#1,247 in the World

...
Tokyo, Japan

Nok Corporation

Forward Citations = 4,069

1,136 inventors:

goldMedal Kenji Sasaki (28 out of 32 patents)

silverMedal Shigeru Watanabe (26 out of 107 patents)

bronzeMedal Hiroki Matsui (21 out of 21 patents)

4.  Hajime Yui (19 out of 19 patents)

5.  Koji Watanabe (18 out of 93 patents)

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