Forward Citations = 117

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4 inventors (with patents filed for the assignee):

Masao Otake (6 out of 6 patents)

Shigesaburo Nakagawa (4 out of 5 patents)

Kosaburo Nakagawa (2 out of 2 patents)

4. Shigeki Nakagawa (1 out of 2 patents)

13 patents: Sort by Forward Citations

1. 6293127 - Rotation preventing necklace (2001-09-25),

2. D333107 - Jewelry chain (1993-02-09),

3. D322416 - Jewelry chain (1991-12-17),

4. D319198 - Jewelry chain (1991-08-20),

5. D299814 - Jewelry chain (1989-02-14),

6. 4679392 - Process for producing a garland chain (1987-07-14),

7. D283018 - Jewelry chain (1986-03-18),

8. D281958 - Jewelry chain (1985-12-31),

9. D281589 - Jewelry chain (1985-12-03),

10. D281588 - Jewelry chain (1985-12-03),

11. D277369 - Jewelry chain (1985-01-29),

12. D277368 - Jewelry chain (1985-01-29),

13. 4348861 - Jewelry chains by electro-forming (1982-09-14),

Company Overview

Nakagawa Corporation, headquartered in Tokyo, specializes in the development and manufacturing of advanced electronic components and systems. The company is recognized for its expertise in precision engineering and innovative technologies, catering to various industries including telecommunications, automotive, and consumer electronics. With a strong focus on research and development, Nakagawa aims to enhance product performance and reliability, contributing to the advancement of technology in Japan and beyond.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

13 Patents

#1,660 in Tokyo

#3,749 in Japan

#45,039 in the World

Tokyo, Japan

Nakagawa Corporation

Forward Citations = 117

4 inventors:

Masao Otake (6 out of 6 patents)

Shigesaburo Nakagawa (4 out of 5 patents)

Kosaburo Nakagawa (2 out of 2 patents)

4. Shigeki Nakagawa (1 out of 2 patents)

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

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]