Inventor
UDAGAWA TSUTOMU
JP17 patents
⚠️ This page may combine multiple inventors who share the name “UDAGAWA TSUTOMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI CONSTRUCTION MACH CO
7 patentsUS10400797B2Sep 3, 2019
Hydraulic control system for working machine
HITACHI CONSTRUCTION MACH CO5 citations73
US10330128B2Jun 25, 2019
Hydraulic control system for work machine
HITACHI CONSTRUCTION MACH CO4 citations73
US9695841B2Jul 4, 2017
Hydraulic closed circuit system
HITACHI CONSTRUCTION MACH CO6 citations73
US10060450B2Aug 28, 2018
Hydraulic control device for work machine
HITACHI CONSTRUCTION MACH CO1 citations52
US12152374B2Nov 26, 2024
Construction machine
HITACHI CONSTRUCTION MACH CO0 citations50
US12077944B2Sep 3, 2024
Construction machine
HITACHI CONSTRUCTION MACH CO0 citations50
US11274418B2Mar 15, 2022
Hydraulic work machine
HITACHI CONSTRUCTION MACH CO0 citations49
HITACHI CONSTRUCTION MACHINERY
6 patentsUS6644629B1Nov 11, 2003
Overwinding prevention device for winch
HITACHI CONSTRUCTION MACHINERY30 citations89
US6339929B1Jan 22, 2002
Swivel control apparatus
HITACHI CONSTRUCTION MACHINERY46 citations89
US7712565B2May 11, 2010
HST travel system for working machine
HITACHI CONSTRUCTION MACHINERY11 citations83
US7500360B2Mar 10, 2009
Hydraulic driving system of construction machinery
HITACHI CONSTRUCTION MACHINERY20 citations82
US7175155B2Feb 13, 2007
Control valve apparatus and pressure circuit
HITACHI CONSTRUCTION MACHINERY7 citations72
US9212469B2Dec 15, 2015
Work machine
HITACHI CONSTRUCTION MACHINERY0 citations41
UDAGAWA TSUTOMU
4 patentsUS8818649B2Aug 26, 2014
Rotation control device for working machine
UDAGAWA TSUTOMU7 citations82
US8585156B2Nov 19, 2013
Travel control device for work vehicle and work vehicle
UDAGAWA TSUTOMU5 citations68
US9103093B2Aug 11, 2015
Rotation control device of working machine
UDAGAWA TSUTOMU1 citations50
US8146691B2Apr 3, 2012
Travel drive system for work vehicle, work vehicle, and travel drive method
UDAGAWA TSUTOMU0 citations50