Inventor
AIZAWA KOOJI
JP4 patents
Patents
4 patentsUS5458460AOct 17, 1995
Drainage pump and a hydraulic turbine incorporating a bearing member, and a method of manufacturing the bearing member
HITACHI LTD23 citations92
US5035519AJul 30, 1991
Submersible thrust bearing apparatus
HITACHI LTD25 citations91
US5839880ANov 24, 1998
Bearing unit, drainage pump and hydraulic turbine each incorporating the bearing unit, and method of manufacturing the bearing unit
HITACHI LTD16 citations81
US5297927AMar 29, 1994
Vertical shaft type pump
HITACHI LTD6 citations73