Hirai Co., Ltd.

Calculating rank

Forward Citations = 29

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6 inventors (with patents filed for the assignee):

Shinichi Nakao (1 out of 28 patents)

Masao Hayakawa (1 out of 1 patent)

Yoshikazu Yokoi (1 out of 1 patent)

4. Yoshitaka Ina (1 out of 1 patent)

5. Masahiro Ishibashi (1 out of 1 patent)

6. Masaki Takamoto (1 out of 1 patent)

1 patent: Sort by Forward Citations

#6,105 in Tokyo

#15,762 in Japan

Forward Citations = 29

6 inventors:

Shinichi Nakao (1 out of 28 patents)

Masao Hayakawa (1 out of 1 patent)

Yoshikazu Yokoi (1 out of 1 patent)

4. Yoshitaka Ina (1 out of 1 patent)

5. Masahiro Ishibashi (1 out of 1 patent)

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