Inventor · disambiguated record
Tomohisa Kumagai
Also filed as: KUMAGAI TOMOHISA
2 granted patents·59 citations·filing 1997–2012
56Inventor score
Top patents by PatentIndex Score
2 records- 0172US5806069AMethod and system of managing construction-related information and production-related informationTOYOTA MOTOR CO LTD·Filed 1997·Granted Sep 8, 1998·59 cites·10 claims
- 0238US9419804B2Data authenticity assurance method, management computer, and storage mediumHITACHI LTD·Filed 2012·Granted Aug 16, 2016·0 cites·13 claims
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