Inventor
ICHIKI NOBUHIKO
JP9 patents
Patents
9 patentsUS6327959B1Dec 11, 2001
Directional control valve device
HITACHI CONSTRUCTION MACHINERY23 citations92
US4919390AApr 24, 1990
Solenoid operated valve apparatus
HITACHI CONSTRUCTION MACHINERY42 citations92
US4706932ANov 17, 1987
Fluid control valve apparatus
HITACHI CONSTRUCTION MACHINERY79 citations92
US5921165AJul 13, 1999
Hydraulic control system
HITACHI CONSTRUCTION MACHINERY29 citations90
US7265304B2Sep 4, 2007
Joystick for electro-hydraulic control system
HITACHI CONSTRUCTION MACHINERY24 citations88
US5485724AJan 23, 1996
Hydraulic drive system
HITACHI CONSTRUCTION MACHINERY19 citations82
US6135149AOct 24, 2000
Pressure compensating valves
HITACHI CONSTRUCTION MACHINERY8 citations73
US5957159ASep 28, 1999
Directional control valve with flow distribution valves
HITACHI CONSTRUCTION MACHINERY12 citations73
US5301920AApr 12, 1994
High-speed solenoid valve apparatus
HITACHI CONSTRUCTION MACHINERY14 citations72