% Expired Patents = 25.0

EPO Patents = 1

Forward Citations = 32

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9 inventors (with patents filed for the assignee):

Akira Nozue (2 out of 3 patents)

Kazuyoshi Harada (2 out of 2 patents)

Koji Harada (1 out of 1 patent)

4. Kiyoshi Takemura (1 out of 1 patent)

5. Takuya Saito (1 out of 6 patents)

6. Osamu Kimpara (1 out of 2 patents)

7. Toshihiko Kondo (1 out of 1 patent)

8. Masayuki Mizutani (1 out of 1 patent)

9. Kenji Komiya (1 out of 1 patent)

4 patents: Sort by Forward Citations

#105 in Nagano

#7,579 in Japan

Tk Co., Ltd.

Forward Citations = 32

9 inventors:

Akira Nozue (2 out of 3 patents)

Kazuyoshi Harada (2 out of 2 patents)

Koji Harada (1 out of 1 patent)

4. Kiyoshi Takemura (1 out of 1 patent)

5. Takuya Saito (1 out of 6 patents)

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