Teijin Engineering Ltd.

Calculating rank

USPTO Granted Patents = 2

% Expired Patents = 50.0

EPO Patents = 1

Forward Citations = 6

Loading Chart...

5 inventors (with patents filed for the assignee):

Ryohichi Nagashima (1 out of 1 patent)

Haruko Hirose (1 out of 1 patent)

Takezo Ono (1 out of 4 patents)

4. Seiki Iribe (1 out of 3 patents)

5. Mineo Watanabe (1 out of 3 patents)

2 patents: Sort by Forward Citations

1. 8629194 - Formed article and process for the production thereof (2014-01-14),

2. 4256559 - Method and apparatus for regenerating spent photographic bleach-fixer (1981-03-17),

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

2 Patents

#1,148 in Osaka

#11,147 in Japan

Osaka, Japan

Teijin Engineering Ltd.

Forward Citations = 6

5 inventors:

Ryohichi Nagashima (1 out of 1 patent)

Haruko Hirose (1 out of 1 patent)

Takezo Ono (1 out of 4 patents)

4. Seiki Iribe (1 out of 3 patents)

5. Mineo Watanabe (1 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Teijin Engineering Ltd.. Retrieved from https://idiyas.com/company/teijin-engineering

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]