Okumura Engineering Corporation

Calculating rank

USPTO Granted Patents = 2

% Expired Patents = 50.0

Trademarks = 1

Forward Citations = 39

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4 inventors (with patents filed for the assignee):

Toru Okazaki (1 out of 34 patents)

Koji Urano (1 out of 1 patent)

Masaharu Fukuchi (1 out of 1 patent)

4. Yoneo Murai (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 6935702 - Crushing apparatus electrode and crushing apparatus (2005-08-30),

2. 5741006 - Butterfly valve (1998-04-21),

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USPTO Data Jan 1 1976 - Nov 3 2026

2 Patents

#1,146 in Osaka

#11,154 in Japan

Osaka, Japan

Okumura Engineering Corporation

Forward Citations = 39

4 inventors:

Toru Okazaki (1 out of 34 patents)

Koji Urano (1 out of 1 patent)

Masaharu Fukuchi (1 out of 1 patent)

4. Yoneo Murai (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Okumura Engineering Corporation. Retrieved from https://idiyas.com/company/okumura-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]