Nippon Power Graphite Co., Ltd.

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USPTO Granted Patents = 1

EPO Patents = 2

Forward Citations = 0

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6 inventors (with patents filed for the assignee):

Tatsuo Umeno (1 out of 9 patents)

Shinya Okabe (1 out of 2 patents)

Tadanori Tsunawaki (1 out of 7 patents)

4. Shirou Oie (1 out of 1 patent)

5. Jyugo Sumitomo (1 out of 1 patent)

6. Shigeyosi Nakano (1 out of 1 patent)

7. Takashi Iwao (0 patent)

1 patent: Sort by Forward Citations

1. 10044024 - Apparatus for manufacturing negative-electrode carbon material, and method for manufacturing negative-electrode carbon material using same (2018-08-07),

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USPTO Data Jan 1 1976 - Oct 27 2026

1 Patents

#6,105 in Tokyo

#15,762 in Japan

Tokyo, Japan

Nippon Power Graphite Co., Ltd.

Forward Citations = 0

6 inventors:

Tatsuo Umeno (1 out of 9 patents)

Shinya Okabe (1 out of 2 patents)

Tadanori Tsunawaki (1 out of 7 patents)

4. Shirou Oie (1 out of 1 patent)

5. Jyugo Sumitomo (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nippon Power Graphite Co., Ltd.. Retrieved from https://idiyas.com/company/nippon-power-graphite-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]

2 patents (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]