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For the Inventor, By the Inventor

Aichi, Japan

Tsuchiya Co., Ltd.

Calculating rank
USPTO Granted Patents = 9

% Expired Patents = 33.3



Trademarks = 1

Forward Citations = 58

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30 inventors (with patents filed for the assignee):

goldMedal Hiroaki Hayashi (5 out of 24 patents)

silverMedal Masahito Hoshino (3 out of 3 patents)

bronzeMedal Naomoto Ishikawa (2 out of 17 patents)

4.  Hideki Horizono (2 out of 12 patents)

5.  Toshiyuki Takayanagi (2 out of 6 patents)

6.  Nobuyuki Kamihara (2 out of 21 patents)

7.  Mikio Muraoka (2 out of 8 patents)

8.  Osamu Yoshida (2 out of 2 patents)

9.  Kotaro Tsuji (2 out of 2 patents)

10.  Haruyuki Nakanishi (2 out of 49 patents)

11.  Shigeaki Murata (2 out of 26 patents)

12.  Kiyomi Kozuka (2 out of 2 patents)

13.  Hideaki Kato (1 out of 34 patents)

14.  Nobutaka Honma (1 out of 3 patents)

15.  Mitsuhiro Inoue (1 out of 10 patents)


9 patents:

1. 11457514 - Resin window and method for producing same (2022-09-27),
2. 10790086 - Method of manufacturing metal nano coil (2020-09-29),
3. 10647892 - Adhesive and structure, and adhesion method (2020-05-12),
4. 7977009 - Cell module for fuel cell, method for forming cell module, and fuel cell (2011-07-12),
5. 7550777 - Light emitting device including adhesion layer (2009-06-23),
6. 7534513 - Membrane electrode assembly for a tube-shaped fuel cell and tube-shaped fuel cell (2009-05-19),
7. 6103390 - Decorative article and decorative laminate (2000-08-15),
8. 5508879 - Charge removal brush (1996-04-16),
9. 4627283 - Fuel level detector for automobile fuel tank (1986-12-09),
Company Overview
Tsuchiya Co., Ltd. is a Japanese company specializing in manufacturing automotive parts. With over 50 years of experience, they provide high-quality products to meet the needs of their customers worldwide. They are committed to innovation and excellence in the industry.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

Tsuchiya Co., Ltd. USPTO Patent Assignee Logo
9 Patents

#105 in Aichi

#4,706 in Japan

Aichi, JP
Aichi, Japan

Tsuchiya Co., Ltd.

Forward Citations = 58

30 inventors:

goldMedal Hiroaki Hayashi (5 out of 24 patents)

silverMedal Masahito Hoshino (3 out of 3 patents)

bronzeMedal Naomoto Ishikawa (2 out of 17 patents)

4.  Hideki Horizono (2 out of 12 patents)

5.  Toshiyuki Takayanagi (2 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tsuchiya Co., Ltd.. Retrieved from https://idiyas.com/company/tsuchiya-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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