This inventor holds 6 USPTO granted patents. Top assignees: Hitachi, Ltd., Hitachi Vlsi Engineering Corp.. Active years: 1979-1992.
IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshiro Tsukada. Retrieved from https://idiyas.com/inventor/toshiro-tsukada
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 = 3.5
ph-index = 4
Forward Citations = 72(Granted Patents)
Location History:
- Kokubunji, JP (1979 - 1983)
- Hachioji, JP (1988 - 1992)
Company Filing History:
6 out of 42,731 
Hitachi, Ltd.
2 out of 182 
Hitachi Vlsi Engineering Corp.
where one patent can have more than one assignee
Years Active: 1979-1992
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6 patents (USPTO):Explore Patents
I specialize in providing information about 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]
IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshiro Tsukada. Retrieved from https://idiyas.com/inventor/toshiro-tsukada
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]