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For the Inventor, By the Inventor

Yamato, Japan

Tamotsu Shirogami

This inventor holds 13 USPTO granted patents. Top assignees: Tokyo Shibaura Denki Kabushiki Kaisha, Tokyo Shibaura Electric Co., Ltd., Kabushiki Kaisha Toshiba. Active years: 1976-1988.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tamotsu Shirogami. Retrieved from https://idiyas.com/inventor/tamotsu-shirogami

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank
USPTO Granted Patents = 13

% Patents Active = 100.0

Average Co-Inventor Count = 2.7

ph-index = 9

Forward Citations = 190(Granted Patents)


Location History:

  • Yamato, JA (1976 - 1977)
  • Yamato, JP (1978 - 1988)

Company Filing History:

goldMedal5 out of 2,916 
 
Tokyo Shibaura Denki Kabushiki Kaisha
 patents
silverMedal5 out of 681 
 
Tokyo Shibaura Electric Co., Ltd.
 patents
bronzeMedal3 out of 53,315 
 
Kabushiki Kaisha Toshiba
 patents

Years Active: 1976-1988

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13 patents (USPTO):Explore Patents
1. 4766043 - Fuel cell (1988-08-23),
2. 4708916 - Molten carbonate fuel cell (1987-11-24),
3. 4661423 - Fuel cell electrolyte matrix and method for manufacturing the same (1987-04-28),
4. 4578135 - Fuel cell electrolyte matrix and method for manufacturing the same (1986-03-25),
5. 4555324 - Porous gas diffusion electrode and method of producing the same (1985-11-26),
6. 4515871 - Electrochemical power generator (1985-05-07),
7. 4478918 - Fuel cell stack (1984-10-23),
8. 4461813 - Electrochemical power generator (1984-07-24),
9. 4143212 - Sealed storage battery (1979-03-06),
10. 4107403 - Electrochemical cell (1978-08-15),
11. 4037033 - Rechargeable nickel-zinc battery (1977-07-19),
12. 3961985 - Nickel-zinc cell (1976-06-08),
13. 3951687 - Nickel-zinc storage battery (1976-04-20),
Profile summary based on public USPTO records.
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]
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