Forward Citations = 1

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12 inventors (with patents filed for the assignee):

Koichi Hatakeyama (2 out of 7 patents)

Tomoki Takiguchi (1 out of 2 patents)

Yoshihiko Aoki (1 out of 1 patent)

4. Yuusuke Okuyama (1 out of 1 patent)

5. Mako Abe (1 out of 2 patents)

6. Yasutomo Tokairin (1 out of 1 patent)

7. Takashi Sato (1 out of 12 patents)

8. Seiji Tamaki (1 out of 5 patents)

9. Takashi Oizumi (1 out of 3 patents)

10. Naoki Umeda (1 out of 4 patents)

11. Kiyoyuki Kawai (1 out of 38 patents)

12. Masayuki Ohira (1 out of 2 patents)

3 patents: Sort by Forward Citations

1. 11680537 - Cylinder liner and cylinder bore (2023-06-20),

2. 11168642 - Cylinder liner for cast-covering, and method for manufacturing cylinder block (2021-11-09),

3. 11141783 - Cylinder liner for insert casting (2021-10-12),

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

3 Patents

#20 in Yamagata

#8,929 in Japan

Yamagata, Japan

Ipr Industry Co., Ltd.

Forward Citations = 1

12 inventors:

Koichi Hatakeyama (2 out of 7 patents)

Tomoki Takiguchi (1 out of 2 patents)

Yoshihiko Aoki (1 out of 1 patent)

4. Yuusuke Okuyama (1 out of 1 patent)

5. Mako Abe (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ipr Industry Co., Ltd.. Retrieved from https://idiyas.com/company/ipr-industry-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]