Inventor · disambiguated record
Itsushi Hirukawa
Also filed as: HIRUKAWA ITSUSHI
8 granted patents·1,504 citations·filing 1988–2006
89Inventor score
Top patents by PatentIndex Score
8 records- 0197US4973274AShift assisting deviceSANSHIN KOGYO KK·Filed 1989·Granted Nov 27, 1990·1.4k cites·5 claims
- 0280US5072629AShift assisting systemSANSHIN KOGYO KK·Filed 1990·Granted Dec 17, 1991·23 cites·5 claims
- 0372US4903662ASpark timing controller for spark ignited internal combustion engineSANSHIN KOGYO KK·Filed 1988·Granted Feb 27, 1990·30 cites·10 claims
- 0466US7261077B2Decompressor and vehicleYAMAHA MOTOR CO LTD·Filed 2006·Granted Aug 28, 2007·4 cites·6 claims
- 0559US4951640AMethod of controlling ignition of internal combustion engineSANSHIN KOGYO KK·Filed 1989·Granted Aug 28, 1990·10 cites·14 claims
- 0659US4909764AIgnition timing control system for marine propulsion unitSANSHIN KOGYO KK·Filed 1988·Granted Mar 20, 1990·12 cites·29 claims
- 0757US7431014B2Internal combustion engine and vehicle having the sameYAMAHA MOTOR CO LTD·Filed 2006·Granted Oct 7, 2008·3 cites·16 claims
- 0835US4927390AGas exhaustion device for inboard/outboard engineSANSHIN KOGYO KK·Filed 1988·Granted May 22, 1990·5 cites·13 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →