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For the Inventor, By the Inventor

Kyoto, Japan

Nitto Seiko Co., Ltd.

Calculating rank
USPTO Granted Patents = 20

% Expired Patents = 5.0


Trademarks = 13

Forward Citations = 206

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38 inventors (with patents filed for the assignee):

goldMedal Osamu Shikata (3 out of 3 patents)

silverMedal Hirotada Sugiura (3 out of 3 patents)

bronzeMedal Masayuki Saito (3 out of 3 patents)

4.  Shinichi Hamano (2 out of 2 patents)

5.  Masatomo Adachi (2 out of 2 patents)

6.  Kazunori Isono (2 out of 2 patents)

7.  Masahiro Ohara (2 out of 2 patents)

8.  Ryuichi Ohtsuki (2 out of 2 patents)

9.  Koreto Marui (2 out of 2 patents)

10.  Kozi Yamamoto (1 out of 1 patent)

11.  Hidetaka Rokudo (1 out of 1 patent)

12.  Naoki Nishimura (1 out of 9 patents)

13.  Shingo Torii (1 out of 1 patent)

14.  Sinnichi Hamano (1 out of 1 patent)

15.  Kinya Kowada (1 out of 1 patent)


20 patents:

1. 12029450 - Biodegradable medical implement (2024-07-09),
2. 11207802 - Method for non-penetration joining of members and non-penetration joining structure (2021-12-28),
3. 9388845 - Locking screw (2016-07-12),
4. 8985926 - Tapping screw (2015-03-24),
5. 7195437 - Tapping screw having function of holding female screw shavings (2007-03-27),
6. 7077038 - Screw having non-strip drive recess and driver bit for use with the screw (2006-07-18),
7. 6065373 - Power tool holding assembly that enables easier operation of a power tool (2000-05-23),
8. 5627610 - Self-locking nut for eye glasses having an unthreaded hole with vertical (1997-05-06),
9. 5508758 - Self-locking nut with threaded and self-locking members, useful for eye (1996-04-16),
10. 5289886 - Automatic screw fastening machine (1994-03-01),
11. 5170852 - Automatic screw fastening machine (1992-12-15),
12. D329436 - Lead wire power cutter (1992-09-15),
13. 5110245 - Thread forming screw (1992-05-05),
14. D325388 - Lead wire cutting machine (1992-04-14),
15. 5044855 - Thread-forming fasteners (1991-09-03),
Company Overview
Nitto Seiko Co., Ltd. is a prominent Japanese company based in Kyoto, specializing in precision components and systems. The organization focuses on the development and manufacturing of high-quality mechanical parts, including precision gears and automotive components, catering to various industries such as automotive, electronics, and machinery. With a commitment to innovation, Nitto Seiko emphasizes advanced engineering and technology to enhance product performance and reliability, positioning itself as a key player in the global market.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

Nitto Seiko Co., Ltd. USPTO Patent Assignee Logo
20 Patents

#96 in Kyoto 615-0031

#2,946 in Japan

#31,315 in the World

Kyoto, JP
Kyoto, Japan

Nitto Seiko Co., Ltd.

Forward Citations = 206

38 inventors:

goldMedal Osamu Shikata (3 out of 3 patents)

silverMedal Hirotada Sugiura (3 out of 3 patents)

bronzeMedal Masayuki Saito (3 out of 3 patents)

4.  Shinichi Hamano (2 out of 2 patents)

5.  Masatomo Adachi (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nitto Seiko Co., Ltd.. Retrieved from https://idiyas.com/company/nitto-seiko-company

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]
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