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USPTO Data Jan 1 1976 - Nov 10 2026
822 Patents
#128 in
#262 in
#1,230 in the World
Nok Corporation
Forward Citations = 4,310
739 inventors:
Nok Corporation
Calculating rank
% Expired Patents = 19.3
CIPO Patents = 10
EPO Patents = 439
Trademarks = 16
Forward Citations = 4,310
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739 inventors (with patents filed for the assignee):
Kenji Sasaki (28 out of 32 patents)
Shigeru Watanabe (27 out of 108 patents)
Hiroki Matsui (21 out of 21 patents)
4. Hajime Yui (20 out of 20 patents)
5. Koji Watanabe (19 out of 96 patents)
6. Takehiro Nakagawa (17 out of 36 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. Masayuki Tanida (15 out of 15 patents)
11. Kokichi Hamamoto (15 out of 15 patents)
12. Yoshiyuki Abe (15 out of 15 patents)
13. Kenichi Oba (14 out of 14 patents)
14. Yusuke Yoshida (14 out of 19 patents)
15. Yoshihiro Kurano (14 out of 14 patents)
Core Competencies:
Sealing Device
Gasket
Hollow Fiber Membrane
Rubber Composition
Seal Structure
Torsional Damper
Bioelectrode
Inspection Method
Conductive Roller
Vibration Damper
Cleaning Blade
Aqueous Surface-Treating Agent
822 patents:
Company Overview
Nok Corporation, headquartered in Tokyo, Japan, specializes in the development and manufacture of sealing devices, which are critical components in various industrial applications. The company focuses on advanced technologies such as gaskets, hollow fiber membranes, and rubber compositions, ensuring high-performance seal structures. Additionally, Nok Corporation is involved in the innovation of torsional dampers and bioelectrodes, alongside the development of inspection methods to enhance product reliability and efficiency across multiple sectors.
Profile summary synthesized from public USPTO records and patent filings.
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nok Corporation. Retrieved from https://idiyas.com/company/nok
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]
10 patents (CIPO):
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]
439 patents (EPO):
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]