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For the Inventor, By the Inventor

Tokyo, Japan

Chemical Grouting Company, Ltd.

Calculating rank
USPTO Granted Patents = 14


Forward Citations = 52

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29 inventors (with patents filed for the assignee):

goldMedal Mitsuhiro Shibazaki (8 out of 9 patents)

silverMedal Hiroaki Kubo (5 out of 8 patents)

bronzeMedal Hiroshi Yoshida (5 out of 8 patents)

4.  Shunji Jinbo (3 out of 4 patents)

5.  Shin Suzuki (2 out of 13 patents)

6.  Masami Yoda (2 out of 6 patents)

7.  Tsutomu Tsuchiya (2 out of 40 patents)

8.  Tsutao Takahashi (2 out of 2 patents)

9.  Toshikuni Hashimoto (2 out of 2 patents)

10.  Isao Yamaki (2 out of 2 patents)

11.  Sotoo Kubo (2 out of 3 patents)

12.  Kaoru Ishizuka (2 out of 2 patents)

13.  Masahiro Iji (2 out of 2 patents)

14.  Mitsuhiro Shibasaki (2 out of 2 patents)

15.  Hiroshi Yoshida (1 out of 155 patents)


14 patents:

1. 10261004 - Determining device and determining method (2019-04-16),
2. 10221537 - Artificial ground freezing method and artificial ground freezing system (2019-03-05),
3. 7120565 - Method and apparatus for determining figure (2006-10-10),
4. 5797465 - Multi-shaft drilling unit (1998-08-25),
5. 5624550 - Process for treating sludge and system for the same (1997-04-29),
6. 5575345 - Multi shaft drilling unit (1996-11-19),
7. 5462672 - Process for treating sludge and system for the same (1995-10-31),
8. 5435668 - Method for controlling a final pile diameter in a cast-in-place of (1995-07-25),
9. 5399056 - Method for controlling a final pile diameter in a cast-in-place of (1995-03-21),
10. 5160220 - Method of improving ground of large area (1992-11-03),
11. 5123783 - Method of reusing slurry (1992-06-23),
12. 5123782 - Method of improving ground of large area (1992-06-23),
13. 5050320 - Multi-shaft kneading auger system (1991-09-24),
14. 5006017 - Method for improving ground of large section area (1991-04-09),
Company Overview
Chemical Grouting Company, Ltd., based in Tokyo, specializes in advanced grouting technologies for ground improvement and construction applications. The company focuses on developing innovative solutions that enhance soil stability and mitigate water infiltration, catering to various sectors including civil engineering and infrastructure development. With a commitment to research and development, it aims to provide effective and sustainable solutions that address the challenges of modern construction and environmental management.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

14 Patents

#1,599 in Tokyo

#3,584 in Japan

#42,290 in the World

Tokyo, JP
Tokyo, Japan

Chemical Grouting Company, Ltd.

Forward Citations = 52

29 inventors:

goldMedal Mitsuhiro Shibazaki (8 out of 9 patents)

silverMedal Hiroaki Kubo (5 out of 8 patents)

bronzeMedal Hiroshi Yoshida (5 out of 8 patents)

4.  Shunji Jinbo (3 out of 4 patents)

5.  Shin Suzuki (2 out of 13 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Chemical Grouting Company, Ltd.. Retrieved from https://idiyas.com/company/chemical-grouting-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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