Inventor
HASEGAWA KENGO
JP8 patents
Patents
8 patentsUS5091823AFeb 25, 1992
Inverter device
HITACHI LTD220 citations96
US5569023AOct 29, 1996
Vortex blower
HITACHI LTD28 citations92
US5035519AJul 30, 1991
Submersible thrust bearing apparatus
HITACHI LTD25 citations91
US4333520AJun 8, 1982
Heating and cooling ventilating system with heat recovery
HITACHI LTD39 citations91
US5395210AMar 7, 1995
Vortex flow blower having blades each formed by curved surface and method of manufacturing the same
HITACHI LTD34 citations90
US5536139AJul 16, 1996
Vortex flow blower having blades each formed by curved surface
HITACHI LTD18 citations80
USD327316SJun 23, 1992
Vortex blower
HITACHI LTD6 citations72
US5697152ADec 16, 1997
Method of manufacturing an impeller
HITACHI LTD12 citations71