Inventor
SAKAMAKI MASAHIKO
JP26 patents
⚠️ This page may combine multiple inventors who share the name “SAKAMAKI MASAHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
JTEKT CORP
11 patentsUS7604088B2Oct 20, 2009
Electric power steering system
JTEKT CORP53 citations96
US7298109B2Nov 20, 2007
Electric power steering apparatus, and method for detecting abnormality of angle detector thereof
JTEKT CORP33 citations92
US8055410B2Nov 8, 2011
Electric power steering system
JTEKT CORP7 citations84
US10272941B2Apr 30, 2019
Vehicle steering device
JTEKT CORP5 citations71
US7711463B2May 4, 2010
Electric power steering system
JTEKT CORP6 citations62
US8813902B2Aug 26, 2014
Hydraulic power steering system
JTEKT CORP2 citations61
US12409880B2Sep 9, 2025
Steering system
JTEKT CORP0 citations52
US10343710B2Jul 9, 2019
Vehicle steering system
JTEKT CORP0 citations42
US8930077B2Jan 6, 2015
Hydraulic power steering system
JTEKT CORP0 citations42
US8733493B2May 27, 2014
Hydraulic power steering system
JTEKT CORP0 citations40
US9162704B2Oct 20, 2015
PID control system
JTEKT CORP0 citations34
KOYO SEIKO CO
11 patentsUS7240761B2Jul 10, 2007
Electric power steering apparatus
KOYO SEIKO CO32 citations92
US7040450B2May 9, 2006
Power-assisted steering system
KOYO SEIKO CO25 citations92
US6892588B2May 17, 2005
Torque sensor
KOYO SEIKO CO23 citations92
US6883637B2Apr 26, 2005
Electric power steering device and control method utilized for controlling said electric power steering device
KOYO SEIKO CO33 citations92
US6504336B2Jan 7, 2003
Motor controller for electric power steering system
KOYO SEIKO CO41 citations92
US6366842B1Apr 2, 2002
Power steering apparatus
KOYO SEIKO CO29 citations92
US6244372B1Jun 12, 2001
Power steering apparatus
KOYO SEIKO CO22 citations92
US7226069B2Jun 5, 2007
Power-assisted steering system and difference compensating method for current detector
KOYO SEIKO CO15 citations84
US6250417B1Jun 26, 2001
Power steering apparatus
KOYO SEIKO CO7 citations73
US6144909ANov 7, 2000
Power steering system with hydraulic pump motor speed control
KOYO SEIKO CO14 citations73
US6131059AOct 10, 2000
Steering angle middle point detecting device and power steering apparatus
KOYO SEIKO CO12 citations73