Forward Citations = 30

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8 inventors (with patents filed for the assignee):

Mineo Murata (2 out of 3 patents)

Kenji Takeuchi (1 out of 73 patents)

Mitsuji Ishida (1 out of 2 patents)

4. Takehiko Tokoro (1 out of 1 patent)

5. Shoichi Kashima (1 out of 1 patent)

6. Shunsuke Tazawa (1 out of 4 patents)

7. Akiyoshi Horiba (1 out of 1 patent)

8. Syouichi Kashima (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 4725169 - Grout impregnation method (1988-02-16),

2. 4449856 - Grout injection method and apparatus (1984-05-22),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

2 Patents

#4,366 in Tokyo

#11,133 in Japan

Tokyo, Japan

Nihon Soil Engineering Co., Ltd.

Forward Citations = 30

8 inventors:

Mineo Murata (2 out of 3 patents)

Kenji Takeuchi (1 out of 73 patents)

Mitsuji Ishida (1 out of 2 patents)

4. Takehiko Tokoro (1 out of 1 patent)

5. Shoichi Kashima (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nihon Soil Engineering Co., Ltd.. Retrieved from https://idiyas.com/company/nihon-soil-engineering-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]