Inventor

NAKATSUHAMA YUICHI

JP3 patents

Patents

3 patents

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

US5697152ADec 16, 1997

Method of manufacturing an impeller

HITACHI LTD12 citations71