Inventor
TOMIKAWA OSAMU
JP10 patents
⚠️ This page may combine multiple inventors who share the name “TOMIKAWA OSAMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI CONSTRUCTION MACHINERY
9 patentsUS7079982B2Jul 18, 2006
Working machine, trouble diagnosis system of working machine, and maintenance system of working machine
HITACHI CONSTRUCTION MACHINERY52 citations94
US7228125B2Jun 5, 2007
Construction machine management apparatus and construction machines management system
HITACHI CONSTRUCTION MACHINERY23 citations92
US5267440ADec 7, 1993
Hydraulic control system for construction machine
HITACHI CONSTRUCTION MACHINERY55 citations92
US4955344ASep 11, 1990
Apparatus for controlling rotational speed of prime mover of construction machine
HITACHI CONSTRUCTION MACHINERY41 citations92
US7493112B2Feb 17, 2009
Construction machine management apparatus and construction machines management system
HITACHI CONSTRUCTION MACHINERY16 citations84
US6998957B2Feb 14, 2006
Security system of construction machinery
HITACHI CONSTRUCTION MACHINERY10 citations74
US5632190AMay 27, 1997
Burglarproof device for hydraulic machine
HITACHI CONSTRUCTION MACHINERY13 citations72
US5265569ANov 30, 1993
Prime mover rotational speed control system
HITACHI CONSTRUCTION MACHINERY8 citations70
US5036817AAug 6, 1991
Engine remote control system
HITACHI CONSTRUCTION MACHINERY3 citations60