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For the Inventor, By the Inventor

Osaka, Japan

Kazuo Yamakawa

This inventor holds 9 USPTO granted patents. Top assignees: Minolta Camera Kabushiki Kaisha, Minolta Camera Co., Ltd.. Active years: 1985-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuo Yamakawa. Retrieved from https://idiyas.com/inventor/kazuo-yamakawa

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

Calculating rank
USPTO Granted Patents = 9

% Patents Active = 100.0

Average Co-Inventor Count = 1.1

ph-index = 5

Forward Citations = 88(Granted Patents)


Location History:

  • Sakai, JP (1985 - 1988)
  • Osaka, JP (1989 - 1994)

Company Filing History:

goldMedal8 out of 2,979 
 
Minolta Camera Kabushiki Kaisha
 patents
silverMedal1 out of 76 
 
Minolta Camera Co., Ltd.
 patents

Years Active: 1985-1994

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9 patents (USPTO):Explore Patents
1. 5311348 - Cylindrical lens system for use in laser beam scanning apparatus and (1994-05-10),
2. 5146360 - Light beam scanning optical system (1992-09-08),
3. 4919502 - Tilt error corrective scanning optical system (1990-04-24),
4. 4875763 - Video projector lens system (1989-10-24),
5. 4830478 - Video projector lens system (1989-05-16),
6. 4799747 - Tilt error corrective scanning optical system (1989-01-24),
7. 4758074 - Video projector lens system (1988-07-19),
8. 4577935 - Video projector lens system (1986-03-25),
9. 4530575 - Video projector lens system (1985-07-23),
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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