% Expired Patents = 25.0

CIPO Patents = 2

EPO Patents = 3

Forward Citations = 25

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14 inventors (with patents filed for the assignee):

Koji Aso (2 out of 3 patents)

Susumu Okuda (1 out of 1 patent)

Ichiro Kusuba (1 out of 1 patent)

4. Shinichi Nishiyama (1 out of 1 patent)

5. Fumiaki Tsuchiya (1 out of 2 patents)

6. Isaburo Yagi (1 out of 11 patents)

7. Masaru Yamakawa (1 out of 2 patents)

8. Yasuhiro Ueda (1 out of 14 patents)

9. Osamu Ishizuka (1 out of 1 patent)

10. Yukikazu Maemoto (1 out of 2 patents)

11. Takaaki Hirokawa (1 out of 1 patent)

12. Hirofumi Nakatsuka (1 out of 1 patent)

13. Takayoshi Imoto (1 out of 4 patents)

14. Toshio Okahashi (1 out of 2 patents)

15. Hitoshi Saito (18 patents)

4 patents: Sort by Forward Citations

1. 10228087 - Method for packing filler material (2019-03-12),

2. 8327886 - Conduit repair structure (2012-12-11),

3. 7341403 - Method of constructing information correspondence pipe, constructed structure, and construction member (2008-03-11),

4. 5503695 - Lining material for pipe lines and a process for providing pipe lines (1996-04-02),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

4 Patents

#3,053 in Tokyo

#7,579 in Japan

Tokyo, Japan

Ashimori Engineering Co., Ltd.

Forward Citations = 25

14 inventors:

Koji Aso (2 out of 3 patents)

Susumu Okuda (1 out of 1 patent)

Ichiro Kusuba (1 out of 1 patent)

4. Shinichi Nishiyama (1 out of 1 patent)

5. Fumiaki Tsuchiya (1 out of 2 patents)

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

2 patents (CIPO):

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]

3 patents (EPO):

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]