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Yoshimi Shigenaga

This inventor holds 9 USPTO granted patents. Top assignee: Casio Computer Co., Ltd.. Active years: 1987-1989.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshimi Shigenaga. Retrieved from https://idiyas.com/inventor/yoshimi-shigenaga

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

USPTO Granted Patents = 9

% Patents Active = 100.0

Average Co-Inventor Count = 1.5

ph-index = 9

Forward Citations = 325(Granted Patents)

Location History:

Tokyo, JP (1987 - 1989)
Higashiyamato, JP (1988 - 1989)

Company Filing History:

Casio Computer Co., Ltd.

Years Active: 1987-1989

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9 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4852156 - Private telephone system using a personal code number to access the (1989-07-25),

2. 4810862 - System for judging propriety of use of an integrated circuit card with a (1989-03-07),

3. 4809326 - IC card system (1989-02-28),

4. 4803351 - IC card system with control of data-writing process (1989-02-07),

5. 4794236 - IC card system (1988-12-27),

6. 4752677 - Customer service system for use in IC card system (1988-06-21),

7. 4749982 - Intelligent card (1988-06-07),

8. 4727244 - IC card system (1988-02-23),

9. 4710613 - Identification system (1987-12-01),

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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