Ishihara Sangyo Co., Ltd.

Calculating rank

USPTO Granted Patents = 2

EPO Patents = 1

Forward Citations = 1

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5 inventors (with patents filed for the assignee):

Hidetoku Iida (2 out of 6 patents)

Takushi Matsui (1 out of 1 patent)

Satoru Tomaru (1 out of 1 patent)

4. Rumiko Osada (1 out of 1 patent)

5. Hideaki Shiratori (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 11163117 - Optical fiber cable and method for manufacturing the same (2021-11-02),

2. 9383514 - Tapered optical fiber, manufacturing method thereof and manufacturing system thereof (2016-07-05),

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USPTO Data Jan 1 1976 - Oct 27 2026

2 Patents

#9 in Ueda

#11,143 in Japan

Ueda, Japan

Ishihara Sangyo Co., Ltd.

Forward Citations = 1

5 inventors:

Hidetoku Iida (2 out of 6 patents)

Takushi Matsui (1 out of 1 patent)

Satoru Tomaru (1 out of 1 patent)

4. Rumiko Osada (1 out of 1 patent)

5. Hideaki Shiratori (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ishihara Sangyo Co., Ltd.. Retrieved from https://idiyas.com/company/ishihara-sangyo-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]