Inventor · disambiguated record
Kengo Hasegawa
Also filed as: HASEGAWA KENGO
8 granted patents·382 citations·filing 1980–1994
90Inventor score
Files withHITACHI LTD8
Top patents by PatentIndex Score
8 records- 0195US5091823AInverter deviceHITACHI LTD·Filed 1991·Granted Feb 25, 1992·220 cites·41 claims
- 0282US4333520AHeating and cooling ventilating system with heat recoveryHITACHI LTD·Filed 1980·Granted Jun 8, 1982·39 cites·6 claims
- 0376US5395210AVortex flow blower having blades each formed by curved surface and method of manufacturing the sameHITACHI LTD·Filed 1993·Granted Mar 7, 1995·34 cites·23 claims
- 0466US5035519ASubmersible thrust bearing apparatusHITACHI LTD·Filed 1990·Granted Jul 30, 1991·25 cites·8 claims
- 0564US5569023AVortex blowerHITACHI LTD·Filed 1994·Granted Oct 29, 1996·28 cites·8 claims
- 0664US5536139AVortex flow blower having blades each formed by curved surfaceHITACHI LTD·Filed 1994·Granted Jul 16, 1996·18 cites·4 claims
- 0749USD327316SVortex blowerHITACHI LTD·Filed 1991·Granted Jun 23, 1992·6 cites·1 claims
- 0847US5697152AMethod of manufacturing an impellerHITACHI LTD·Filed 1994·Granted Dec 16, 1997·12 cites·2 claims
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