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For the Inventor, By the Inventor

Tokyo, Japan

Maeda Road Construction Co., Ltd.

Calculating rank
USPTO Granted Patents = 3



Forward Citations = 9

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5 inventors (with patents filed for the assignee):

goldMedal Hirochika Moriyasu (3 out of 4 patents)

silverMedal Kentaro Koshi (3 out of 4 patents)

bronzeMedal Hiroshi Taniguchi (2 out of 8 patents)

4.  Keigo Hatakeyama (2 out of 2 patents)

5.  Toshihumi Emukai (1 out of 1 patent)


3 patents:

1. 9809709 - Recycled hot asphalt mixture production method (2017-11-07),
2. 9617426 - Asphalt mixture, process for production of same, and paving method using same (2017-04-11),
3. 9617425 - Asphalt mixture, process for production of same, and paving method using same (2017-04-11),
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USPTO Data Jan 1 1976 - Oct 27 2026

3 Patents

#3,552 in Tokyo

#8,938 in Japan

Tokyo, JP
Tokyo, Japan

Maeda Road Construction Co., Ltd.

Forward Citations = 9

5 inventors:

goldMedal Hirochika Moriyasu (3 out of 4 patents)

silverMedal Kentaro Koshi (3 out of 4 patents)

bronzeMedal Hiroshi Taniguchi (2 out of 8 patents)

4.  Keigo Hatakeyama (2 out of 2 patents)

5.  Toshihumi Emukai (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Maeda Road Construction Co., Ltd.. Retrieved from https://idiyas.com/company/maeda-road-construction-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]
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