Inventor · disambiguated record
Tomoyuki Utsumi
Also filed as: UTSUMI TOMOYUKI
2 granted patents·54 citations·filing 2000–2008
63Inventor score
Files withHITACHI LTD2
Top patents by PatentIndex Score
2 records- 0183US6580108B1Insulated gate bipolar transistor decreasing the gate resistanceHITACHI LTD·Filed 2000·Granted Jun 17, 2003·44 cites·13 claims
- 0277US7859210B2Semiconductor device for driving motor, three-phase motor and motor driving apparatus with the semiconductor device and fan motorHITACHI LTD·Filed 2008·Granted Dec 28, 2010·10 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →