This inventor holds 5 USPTO granted patents. Top assignees: Hitachi Microcomputer Engineering, Ltd., Hitachi, Ltd., Akita Electronics Co., Ltd.. Active years: 1990-1992.
IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshikazu Arai. Retrieved from https://idiyas.com/inventor/toshikazu-arai
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
% Patents Active = 100.0
Average Co-Inventor Count = 4.2
ph-index = 4
Forward Citations = 44(Granted Patents)
Location History:
- Maebashi, JP (1990 - 1991)
- Ohme, JP (1990 - 1992)
Company Filing History:
5 out of 149 
Hitachi Microcomputer Engineering, Ltd.
5 out of 42,731 
Hitachi, Ltd.
4 out of 13 Akita Electronics Co., Ltd.
4. 1 out of 1
Akia Electronics Co., Ltd.
where one patent can have more than one assignee
Years Active: 1990-1992
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5 patents (USPTO):Explore Patents
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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]
IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshikazu Arai. Retrieved from https://idiyas.com/inventor/toshikazu-arai
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
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]
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]
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]
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]
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]