Simi Valley, CA, United States of America

Tepco Ltd.

Calculating rank

USPTO Granted Patents = 4

Forward Citations = 137

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5 inventors (with patents filed for the assignee):

Michael Salyards (3 out of 3 patents)

Grahame Emerson (2 out of 2 patents)

Robinette S Alkhas (1 out of 1 patent)

4. Clifford A Watson (1 out of 3 patents)

5. David W Bonham (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 6866692 - Preformed abrasive articles and method for the manufacture of same (2005-03-15),

2. 6723142 - Preformed abrasive articles and method for the manufacture of same (2004-04-20),

3. 5346516 - Non-woven abrasive material containing hydrogenated vegetable oils (1994-09-13),

4. 4163650 - Portable electronic precipitator (1979-08-07),

Company Overview

Tepco Ltd. is a leading Japanese electric utility company that provides electricity to the greater Tokyo area. With a strong focus on innovation and sustainability, Tepco is committed to providing reliable and affordable energy solutions to its customers. The company also invests in research and development to drive renewable energy initiatives and reduce environmental impact. Tepco aims to be a trusted partner in powering the future of Japan.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

4 Patents

#26 in Simi Valley, CA

#14,058 in California

#60,671 in US

Simi Valley, CA, United States of America

Tepco Ltd.

Forward Citations = 137

5 inventors:

Michael Salyards (3 out of 3 patents)

Grahame Emerson (2 out of 2 patents)

Robinette S Alkhas (1 out of 1 patent)

4. Clifford A Watson (1 out of 3 patents)

5. David W Bonham (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Tepco Ltd.. Retrieved from https://idiyas.com/company/tepco

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]