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Matsumoto, Japan

Masahiro Koiwai

This inventor holds 5 USPTO granted patents. Top assignee: Seiko Epson Corporation. Active years: 1992-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masahiro Koiwai. Retrieved from https://idiyas.com/inventor/masahiro-koiwai

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 = 1.6

ph-index = 3

Forward Citations = 26(Granted Patents)

Location History:

Nagano, JP (1992)
Suwa, JP (1992 - 1993)
Matsumoto, JP (2018 - 2022)

Company Filing History:

5 out of 34,238

Seiko Epson Corporation

Years Active: 1992-2022

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5 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11383513 - Liquid discharging apparatus, head control unit, and head unit (2022-07-12),

2. 10009498 - Printing apparatus and method for controlling printing apparatus (2018-06-26),

3. 5255986 - Picture image forming apparatus with mechanism controller (1993-10-26),

4. 5086309 - Image forming apparatus (1992-02-04),

5. 5083170 - Electrophotographic recording apparatus (1992-01-21),

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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