Inventor · disambiguated record
Hiromu Utsumi
Also filed as: UTSUMI HIROMU
4 granted patents·360 citations·filing 1987–1992
83Inventor score
Technology areasB25C
Files withHITACHI KOKI KK4
Top patents by PatentIndex Score
4 records- 0196US4913331AInternal-combustion piston driving apparatus having a decompression channelHITACHI KOKI KK·Filed 1988·Granted Apr 3, 1990·119 cites·8 claims
- 0295US4773581ACombustion gas powered toolHITACHI KOKI KK·Filed 1987·Granted Sep 27, 1988·117 cites·6 claims
- 0388US5199626ACombustion gas powered toolHITACHI KOKI KK·Filed 1992·Granted Apr 6, 1993·64 cites·5 claims
- 0486US5090606ACombustion gas powered fastener driving toolHITACHI KOKI KK·Filed 1990·Granted Feb 25, 1992·60 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →