Inventor

NISHIUCHI AKIRA

JP5 patents

Patents

5 patents

US5664935ASep 9, 1997

Vacuum pump

HITACHI LTD20 citations91

US5536148AJul 16, 1996

Turbo vacuum pump

HITACHI LTD28 citations91

US4904155AFeb 27, 1990

Vacuum pump

HITACHI LTD32 citations90

US5501583AMar 26, 1996

Turbo vacuum pump

HITACHI LTD18 citations72

US5380171AJan 10, 1995

Turbo vacuum pump

HITACHI LTD9 citations72