Inventor
KAJITA YUSUKE
JP29 patents
⚠️ This page may combine multiple inventors who share the name “KAJITA YUSUKE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI CONSTRUCTION MACHINERY
16 patentsUS5186000AFeb 16, 1993
Hydraulic drive system for construction machines
HITACHI CONSTRUCTION MACHINERY38 citations93
US5152143AOct 6, 1992
Hydraulic drive system
HITACHI CONSTRUCTION MACHINERY28 citations93
US5134853AAug 4, 1992
Hydraulic drive system for construction machines
HITACHI CONSTRUCTION MACHINERY38 citations93
US5062350ANov 5, 1991
Hydraulic drive system for civil engineering and construction machine
HITACHI CONSTRUCTION MACHINERY25 citations93
US7562615B2Jul 21, 2009
Hydraulic working machine
HITACHI CONSTRUCTION MACHINERY23 citations92
US6230090B1May 8, 2001
Interference prevention system for two-piece boom type hydraulic excavator
HITACHI CONSTRUCTION MACHINERY35 citations92
US5267440ADec 7, 1993
Hydraulic control system for construction machine
HITACHI CONSTRUCTION MACHINERY55 citations92
US5056312AOct 15, 1991
Hydraulic drive system for construction machines
HITACHI CONSTRUCTION MACHINERY47 citations91
US5005358AApr 9, 1991
Hydraulic drive system for crawler-mounted construction vehicle
HITACHI CONSTRUCTION MACHINERY20 citations82
US7127888B2Oct 31, 2006
Hydraulic drive unit
HITACHI CONSTRUCTION MACHINERY10 citations74
US6898932B2May 31, 2005
Hydraulic driving unit
HITACHI CONSTRUCTION MACHINERY11 citations74
US5203678AApr 20, 1993
Valve apparatus and hydraulic drive system
HITACHI CONSTRUCTION MACHINERY18 citations74
US5152140AOct 6, 1992
Pressure compensating valve spool positioned by difference in pressure receiving areas for load and inlet pressures
HITACHI CONSTRUCTION MACHINERY15 citations74
US5150574ASep 29, 1992
Hydraulic drive system for civil engineering and construction machine
HITACHI CONSTRUCTION MACHINERY18 citations74
US7895833B2Mar 1, 2011
Hydraulic drive apparatus
HITACHI CONSTRUCTION MACHINERY5 citations63
US7434394B2Oct 14, 2008
Hydraulic drive device
HITACHI CONSTRUCTION MACHINERY5 citations63