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.

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USPTO Data Jan 1 1976 - Oct 20 2026

819 Patents

#129 in

#262 in

#1,237 in the World

Tokyo, Japan

Nok Corporation

Forward Citations = 4,269

739 inventors:

Kenji Sasaki (28 out of 32 patents)

Shigeru Watanabe (26 out of 107 patents)

Hiroki Matsui (21 out of 21 patents)

4. Hajime Yui (19 out of 19 patents)

5. Koji Watanabe (19 out of 96 patents)

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]