% Expired Patents = 100.0

Forward Citations = 7

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6 inventors (with patents filed for the assignee):

Kenta Naganuma (1 out of 4 patents)

Manabu Hasegawa (1 out of 23 patents)

Shinichirou Koshikawa (1 out of 4 patents)

4. Ryou Niimi (1 out of 2 patents)

5. Hisashi Fukai (1 out of 3 patents)

6. Kazuyoshi Oshima (1 out of 42 patents)

1 patent: Sort by Forward Citations

#374 in Kyoto 615-0031

#15,732 in Japan

Pkm Corporation

Forward Citations = 7

6 inventors:

Kenta Naganuma (1 out of 4 patents)

Manabu Hasegawa (1 out of 23 patents)

Shinichirou Koshikawa (1 out of 4 patents)

4. Ryou Niimi (1 out of 2 patents)

5. Hisashi Fukai (1 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Pkm Corporation. Retrieved from https://idiyas.com/company/pkm

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]