% Expired Patents = 66.7

EPO Patents = 1

Forward Citations = 6

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11 inventors (with patents filed for the assignee):

Tadashi Tashima (2 out of 2 patents)

Kazuo Sugiyama (1 out of 8 patents)

Masaki Nezu (1 out of 1 patent)

4. Hideaki Amano (1 out of 1 patent)

5. Shunitirou Ozaki (1 out of 1 patent)

6. Kenji Nakanishi (1 out of 1 patent)

7. Kazunari Yoshida (1 out of 4 patents)

8. Hideo Takaara (1 out of 2 patents)

9. Yu Kagami (1 out of 1 patent)

10. Yoshio Shindoh (1 out of 2 patents)

11. Masanobu Tanigawa (1 out of 5 patents)

12. Toshiyuki Nishimura (0 patent)

3 patents: Sort by Forward Citations

1. 8927843 - Head fixing mechanism of drum (2015-01-06),

2. 8734074 - Connecting member and connecting structure (2014-05-27),

3. 7699568 - Screw attachment, fastening assembly having screw attachment, and process of releasing fastening assembly (2010-04-20),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

3 Patents

#313 in Kanagawa

#8,932 in Japan

Kanagawa, Japan

Union Seimitsu Co., Ltd.

Forward Citations = 6

11 inventors:

Tadashi Tashima (2 out of 2 patents)

Kazuo Sugiyama (1 out of 8 patents)

Masaki Nezu (1 out of 1 patent)

4. Hideaki Amano (1 out of 1 patent)

5. Shunitirou Ozaki (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Union Seimitsu Co., Ltd.. Retrieved from https://idiyas.com/company/union-seimitsu-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]

1 patent (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]