Japan Highway Public Corporation

Calculating rank

USPTO Granted Patents = 1

% Expired Patents = 100.0

Forward Citations = 3

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3 inventors (with patents filed for the assignee):

Kouji Yamamoto (1 out of 9 patents)

Tadayuki Yamada (1 out of 2 patents)

Makoto Goto (1 out of 1 patent)

1 patent: Sort by Forward Citations

1. 6979146 - Road surface sensor and monitoring control method for road surface (2005-12-27),

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USPTO Data Jan 1 1976 - Oct 27 2026

1 Patents

#6,105 in Tokyo

#15,762 in Japan

Tokyo, Japan

Japan Highway Public Corporation

Forward Citations = 3

3 inventors:

Kouji Yamamoto (1 out of 9 patents)

Tadayuki Yamada (1 out of 2 patents)

Makoto Goto (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Japan Highway Public Corporation. Retrieved from https://idiyas.com/company/japan-highway-public

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]