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Katsuhisa Tsuji

This inventor holds 5 USPTO granted patents. Top assignees: Ricoh Company, Ltd., Ricoh Corporation. Active years: 1988-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsuhisa Tsuji. Retrieved from https://idiyas.com/inventor/katsuhisa-tsuji

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

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 1.5

ph-index = 5

Forward Citations = 158(Granted Patents)

Location History:

Tokyo, JP (1988 - 1991)
Yokohama, JP (1991)
Kanagawa, JP (2001)

Company Filing History:

4 out of 28,940

Ricoh Company, Ltd.

Ricoh Corporation

Years Active: 1988-2001

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5 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6185007 - Image forming apparatus (2001-02-06),

2. 5077615 - Halftone image recording apparatus combining error scattering and (1991-12-31),

3. 5057914 - Method of processing colored image in multilevel gradations (1991-10-15),

4. 4953013 - Color image processing device (1990-08-28),

5. 4742400 - Digital image processing device for intermediate tone (1988-05-03),

I specialize in innovations, inventions, inventors, patent attorneys, assignees, and patents.

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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