Inventor
SUDO SUMIO
JP12 patents
Patents
12 patentsUS5360290ANov 1, 1994
Underground drainage facility, vertical-shaft multi-stage adjustable vane pump, and method of running drainage pump
HITACHI LTD44 citations95
US6102618AAug 15, 2000
Large-depth underground drainage facility and method of running same
HITACHI LTD38 citations92
US5909982AJun 8, 1999
Large-depth underground drainage facility and method of running same
HITACHI LTD35 citations92
US5487621AJan 30, 1996
Large-depth underground drainage facility and method of running same
HITACHI LTD39 citations92
US6527509B2Mar 4, 2003
Turbo machines
HITACHI LTD19 citations88
US6540482B2Apr 1, 2003
Turbo-type machines
HITACHI LTD9 citations73
US5634740AJun 3, 1997
Large-depth underground drainage facility and method of running same
HITACHI LTD5 citations73
US5624226AApr 29, 1997
Underground drainage facility, vertical-shaft multi-stage adjustable vane pump, and method of running drainage pump
HITACHI LTD10 citations73
US6302643B1Oct 16, 2001
Turbo machines
HITACHI LTD13 citations71
US5154570AOct 13, 1992
Vertical shaft pump
HITACHI LTD10 citations70
US5733065AMar 31, 1998
Underground drainage facility, vertical-shaft multi-stage adjustable vane pump, and method of running drainage pump
HITACHI LTD3 citations62
US4362463ADec 7, 1982
Movable blade pump
HITACHI LTD4 citations62