Inventor
HAYAMA RYOUHEI
JP32 patents
⚠️ This page may combine multiple inventors who share the name “HAYAMA RYOUHEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KOYO SEIKO CO
13 patentsUS6415215B1Jul 2, 2002
Vehicle attitude control apparatus
KOYO SEIKO CO181 citations99
US6442462B1Aug 27, 2002
Motor vehicle steering system
KOYO SEIKO CO64 citations96
US6896090B2May 24, 2005
Vehicle steering device
KOYO SEIKO CO43 citations92
US6763907B2Jul 20, 2004
Vehicle steering apparatus
KOYO SEIKO CO26 citations92
US6470250B2Oct 22, 2002
Vehicle attitude control apparatus
KOYO SEIKO CO25 citations92
US6364051B1Apr 2, 2002
Electric power steering system
KOYO SEIKO CO25 citations92
US7233850B2Jun 19, 2007
Vehicle steering apparatus
KOYO SEIKO CO22 citations88
US6719088B2Apr 13, 2004
Vehicle steering apparatus
KOYO SEIKO CO16 citations84
US6382345B2May 7, 2002
Electric power steering system
KOYO SEIKO CO17 citations84
US7147080B2Dec 12, 2006
Steering apparatus for vehicle
KOYO SEIKO CO13 citations83
US6968262B2Nov 22, 2005
Steering angle correction device
KOYO SEIKO CO14 citations83
US6450592B1Sep 17, 2002
Motor vehicle braking system
KOYO SEIKO CO7 citations74
US6516916B2Feb 11, 2003
Steering device
KOYO SEIKO CO5 citations62
JTEKT CORP
11 patentsUS7862084B2Jan 4, 2011
Vehicle steering apparatus
JTEKT CORP24 citations91
US8855859B2Oct 7, 2014
Vehicle steering system and material handling vehicle
JTEKT CORP8 citations84
US7806224B2Oct 5, 2010
Vehicle steering apparatus
JTEKT CORP13 citations82
US8862329B2Oct 14, 2014
Control apparatus for steering mechanism
JTEKT CORP4 citations73
US9442043B2Sep 13, 2016
Vehicle test apparatus and vehicle test system
JTEKT CORP6 citations70
US9126618B2Sep 8, 2015
Vehicle steering system
JTEKT CORP2 citations63
US9043091B2May 26, 2015
Vehicle steering system
JTEKT CORP3 citations63
US9227657B2Jan 5, 2016
Vehicle steering system
JTEKT CORP2 citations59
US8909429B2Dec 9, 2014
Vehicle steering system
JTEKT CORP1 citations52
US9448137B2Sep 20, 2016
Test system
JTEKT CORP1 citations49
US9988081B2Jun 5, 2018
Steering system
JTEKT CORP0 citations34
HAYAMA RYOUHEI
6 patentsUS9108667B2Aug 18, 2015
Motor vehicle steering system
HAYAMA RYOUHEI7 citations83
US8224528B2Jul 17, 2012
Vehicle steering apparatus
HAYAMA RYOUHEI8 citations82
US8660749B2Feb 25, 2014
Motor vehicle steering system
HAYAMA RYOUHEI6 citations72
US8185270B2May 22, 2012
Vehicle steering device
HAYAMA RYOUHEI6 citations72
US8467939B2Jun 18, 2013
Motor vehicle steering system
HAYAMA RYOUHEI2 citations62
US8744687B2Jun 3, 2014
Vehicle steering apparatus
HAYAMA RYOUHEI2 citations61