P

Inventor

SONODA MITSUO

JP10 patents
⚠️ This page may combine multiple inventors who share the name “SONODA MITSUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI CONSTRUCTION MACHINERY

4 patents
US5203168AApr 20, 1993

Hydraulic driving circuit with motor displacement limitation control

HITACHI CONSTRUCTION MACHINERY81 citations95
US5003776AApr 2, 1991

Hydraulic drive system

HITACHI CONSTRUCTION MACHINERY11 citations73
US4846046AJul 11, 1989

Hydraulic drive circuit system

HITACHI CONSTRUCTION MACHINERY15 citations73
US6079131AJun 27, 2000

Operation control device for three-joint type excavator

HITACHI CONSTRUCTION MACHINERY12 citations71

FUJISHIMA KAZUO

2 patents
US8659177B2Feb 25, 2014

Motive power regeneration system for working machine

FUJISHIMA KAZUO16 citations82
US9399856B2Jul 26, 2016

Hydraulic working machine

FUJISHIMA KAZUO7 citations80

HITACHI CONSTRUCTION MACH CO

1 patent
US9671763B2Jun 6, 2017

Device for controlling construction machinery

HITACHI CONSTRUCTION MACH CO3 citations73

(unassigned)

1 patent
US6101437AAug 8, 2000

Operation control device for three-joint excavator

12 citations69

ISHIHARA SHINJI

1 patent
US9065361B2Jun 23, 2015

Hybrid construction machine

ISHIHARA SHINJI3 citations60

UDAGAWA TSUTOMU

1 patent
US9103093B2Aug 11, 2015

Rotation control device of working machine

UDAGAWA TSUTOMU1 citations50