Inventor · disambiguated record
Tsutomu Umehara
Also filed as: UMEHARA TSUTOMU
4 granted patents·34 citations·filing 2003–2015
68Inventor score
Top patents by PatentIndex Score
4 records- 0184US6973785B2Apparatus and method for controlling EGR in an engineTOYOTA JIDOSHOKKI KK·Filed 2003·Granted Dec 13, 2005·30 cites·33 claims
- 0276US9677497B2Fuel injection control apparatus and compression ignition type internal combustion engineTOYOTA JIDOSHOKKI KK·Filed 2014·Granted Jun 13, 2017·4 cites·10 claims
- 0343US10302028B2Work machine, power unit, and diesel engine of work machineHITACHI CONSTRUCTION MACH CO·Filed 2015·Granted May 28, 2019·0 cites·15 claims
- 0428US8875488B2Internal combustion engineHAMAMATSU TAKEHITO·Filed 2011·Granted Nov 4, 2014·0 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →