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Yoichi Yokoyama

This inventor holds 7 USPTO granted patents. Top assignee: Matsushita Electric Works, Ltd.. Active years: 1986-1995.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoichi Yokoyama. Retrieved from https://idiyas.com/inventor/yoichi-yokoyama

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

USPTO Granted Patents = 7

% Patents Active = 100.0

Average Co-Inventor Count = 4.0

ph-index = 6

Forward Citations = 97(Granted Patents)

Location History:

Itami, JP (1986)
Kadoma, JP (1987 - 1995)

Company Filing History:

Matsushita Electric Works, Ltd.

Years Active: 1986-1995

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7 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5420555 - Plural sealed contact units with common electromagnetic operating (1995-05-30),

2. 5389905 - Damper, electromagnet assembly employing the damper, and relay employing (1995-02-14),

3. 5359305 - Electromagnetic relay (1994-10-25),

4. 5049845 - Welding free relay contact device (1991-09-17),

5. 4752660 - Current limiting circuit breaker with an arc shearing plate (1988-06-21),

6. 4703294 - Remotely controllable relay (1987-10-27),

7. 4604596 - Remotely controllable circuit breaker (1986-08-05),

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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