P

Inventor

ISHIKAWA KOUJI

JP146 patents
⚠️ This page may combine multiple inventors who share the name “ISHIKAWA KOUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI CONSTRUCTION MACHINERY

14 patents
US7127887B2Oct 31, 2006

Oil pressure circuit for working machines

HITACHI CONSTRUCTION MACHINERY31 citations93
US5974796ANov 2, 1999

Hydraulic circuit system for hydraulic working machine

HITACHI CONSTRUCTION MACHINERY29 citations93
US5940997AAug 24, 1999

Hydraulic circuit system for hydraulic working machine

HITACHI CONSTRUCTION MACHINERY33 citations93
US7562615B2Jul 21, 2009

Hydraulic working machine

HITACHI CONSTRUCTION MACHINERY23 citations92
US5930996AAug 3, 1999

Auto-acceleration system for prime mover of hydraulic construction machine and control system for prime mover and hydraulic pump

HITACHI CONSTRUCTION MACHINERY28 citations92
US5911506AJun 15, 1999

Control system for prime mover and hydraulic pump of hydraulic construction machine

HITACHI CONSTRUCTION MACHINERY37 citations92
US5890303AApr 6, 1999

Hydraulic by-pass circuit for a hydraulic shovel

HITACHI CONSTRUCTION MACHINERY29 citations92
US5848531ADec 15, 1998

Hydraulic drive system for construction machines

HITACHI CONSTRUCTION MACHINERY36 citations92
US6220028B1Apr 24, 2001

Hydraulic drive system for hydraulic work vehicle

HITACHI CONSTRUCTION MACHINERY30 citations91
US7584611B2Sep 8, 2009

Control system for hydraulic construction machine

HITACHI CONSTRUCTION MACHINERY14 citations84
US7543448B2Jun 9, 2009

Control system for hydraulic construction machine

HITACHI CONSTRUCTION MACHINERY12 citations84
US7255088B2Aug 14, 2007

Engine control system for construction machine

HITACHI CONSTRUCTION MACHINERY10 citations84
US6619037B1Sep 16, 2003

Hydraulic driving device of civil engineering and construction machinery

HITACHI CONSTRUCTION MACHINERY13 citations84
US5907951AJun 1, 1999

Hydraulic control system for construction machine

HITACHI CONSTRUCTION MACHINERY16 citations74

NSK LTD

7 patents

HITACHI CONSTRUCTION MACH CO

7 patents

FUJITSU LTD

2 patents

ITO EITARO

2 patents

OOKI TAKATOSHI

2 patents

HIROKI TAKENORI

2 patents

HAGIWARA NAOKI

2 patents

MITSUBISHI ELECTRIC CORP

1 patent

IMURA SHINYA

1 patent

NAKAMURA TSUYOSHI

1 patent

NAKAMURA KAZUNORI

1 patent

OKANO YASUO

1 patent

NISHIKAWA SHINJI

1 patent

EDAMURA MANABU

1 patent

ABE TOSHIHIRO

1 patent

KIMURA TOMOKI

1 patent

ARIGA NOBUEI

1 patent

KOWATARI YOICHI

1 patent

SAWADA SHINGO

1 patent

Showing the top 50 of 146 patents by PatentIndex Score.