% Expired Patents = 100.0

EPO Patents = 1

Forward Citations = 22

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6 inventors (with patents filed for the assignee):

Akira Yamada (1 out of 107 patents)

Fumiyuki Kobayashi (1 out of 18 patents)

Hisamitsu Takagi (1 out of 50 patents)

4. Oh Tanaka (1 out of 1 patent)

5. Yoshinori Hara (1 out of 1 patent)

6. Yutaka Yoshigashima (1 out of 2 patents)

7. Akira Yamamoto Precision Co Ltd Yamada (0 patent)

8. Shigehiro Nec Saitama Ltd Terada (0 patent)

9. Yoshihito Toyo Bussan Co Ltd Ishiguro (0 patent)

10. Yuuichirou Nec Saitama Ltd Kimura (0 patent)

3 patents: Sort by Forward Citations

1. 8320111 - Slide/rotation attachment unit and electronic device using the same (2012-11-27),

2. 8060159 - Slidably and rotationally attaching unit and electronic device (2011-11-15),

3. 6609273 - Hinge (2003-08-26),

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

3 Patents

#3,548 in Tokyo

#8,932 in Japan

Tokyo, Japan

Yamamoto Precision Co., Ltd.

Forward Citations = 22

6 inventors:

Akira Yamada (1 out of 107 patents)

Fumiyuki Kobayashi (1 out of 18 patents)

Hisamitsu Takagi (1 out of 50 patents)

4. Oh Tanaka (1 out of 1 patent)

5. Yoshinori Hara (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Yamamoto Precision Co., Ltd.. Retrieved from https://idiyas.com/company/yamamoto-precision-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]

1 patent (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]