Chakyu Dyeing Co., Ltd.

Calculating rank

USPTO Granted Patents = 2

% Expired Patents = 50.0

EPO Patents = 1

Forward Citations = 3

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4 inventors (with patents filed for the assignee):

Bunshi Fugetsu (2 out of 7 patents)

Eiji Akiba (2 out of 7 patents)

Masaaki Hachiya (2 out of 2 patents)

4. Hidetaka Yamauchi (1 out of 1 patent)

5. Akiba Eiji (0 patent)

6. Hachiya Masaaki (0 patent)

2 patents: Sort by Forward Citations

1. 9885146 - Electro-conductive fibers with carbon nanotubes adhered thereto, electro-conductive yarn, fibers structural object, and production processes thereof (2018-02-06),

2. 9035188 - Electro-conductive multifilament yarn and electro-conductive brush (2015-05-19),

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USPTO Data Jan 1 1976 - Oct 20 2026

2 Patents

#6 in Ichinomiya

#11,139 in Japan

Ichinomiya, Japan

Chakyu Dyeing Co., Ltd.

Forward Citations = 3

4 inventors:

Bunshi Fugetsu (2 out of 7 patents)

Eiji Akiba (2 out of 7 patents)

Masaaki Hachiya (2 out of 2 patents)

4. Hidetaka Yamauchi (1 out of 1 patent)

5. Akiba Eiji (0 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Chakyu Dyeing Co., Ltd.. Retrieved from https://idiyas.com/company/chakyu-dyeing-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]