Inventor
OKAHARA HIROFUMI
JP26 patents
⚠️ This page may combine multiple inventors who share the name “OKAHARA HIROFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NISSAN MOTOR
21 patentsUS5607373AMar 4, 1997
CVT ratio rate control as a function of throttle release rate
NISSAN MOTOR192 citations99
US6246940B1Jun 12, 2001
Speed change controller for automatic transmission
NISSAN MOTOR26 citations92
US6217469B1Apr 17, 2001
Control system for continuously variable transmission
NISSAN MOTOR25 citations92
US6077187AJun 20, 2000
Electronic transmission control system with fail-safe system for automotive vehicle with continuously variable automatic transmission
NISSAN MOTOR28 citations92
US6007452ADec 28, 1999
Line pressure control system for continuously variable transmission accounting for input load changes caused by inertia during shifting
NISSAN MOTOR25 citations92
US5871416AFeb 16, 1999
Controller and control method for continuously variable transmission
NISSAN MOTOR22 citations92
US5803862ASep 8, 1998
Continuously variable transmission control method and apparatus
NISSAN MOTOR24 citations92
US5697866ADec 16, 1997
Engine-CVT drivetrain control system
NISSAN MOTOR34 citations92
US5435795AJul 25, 1995
Vehicle drivetrain control including CVT
NISSAN MOTOR21 citations91
US5480361AJan 2, 1996
Change direction planetary gearing for continuously variable transmission
NISSAN MOTOR29 citations89
US5439419AAug 8, 1995
Pulley device for continuously variable transmission
NISSAN MOTOR39 citations89
US5649457AJul 22, 1997
Park lock arrangement for continuously variable transmission
NISSAN MOTOR25 citations88
US6030313AFeb 29, 2000
Control system for continuously variable transmission
NISSAN MOTOR12 citations74
US5249482AOct 5, 1993
Ratio control for continuously variable transmission
NISSAN MOTOR11 citations74
US5111719AMay 12, 1992
Shift control to engine braking or reverse drive
NISSAN MOTOR9 citations74
US5033330AJul 23, 1991
Transient control of shift in auxiliary gearing for quick engine braking
NISSAN MOTOR10 citations74
US4942784AJul 24, 1990
Transmission control system for the automatic transmission of automotive vehicles for gear train locking upon unintended acceleration
NISSAN MOTOR11 citations74
US6220985B1Apr 24, 2001
Speed change ratio controller for stepless automatic transmission
NISSAN MOTOR6 citations63
US5078662AJan 7, 1992
Automatic transaxle
NISSAN MOTOR5 citations63
US5000218AMar 19, 1991
Wire harness arrangement of automatic transmission
NISSAN MOTOR6 citations60
US5138907AAug 18, 1992
Safeguard for shift control for auxiliary gearing of automatic transmission
NISSAN MOTOR1 citations52
JATCO LTD
4 patentsUS6829528B1Dec 7, 2004
Control system and control method for automatic transmission
JATCO LTD30 citations92
US7222005B2May 22, 2007
Abnormal oil pressure reduction determination device for vehicle transmission
JATCO LTD19 citations82
US6960153B2Nov 1, 2005
Clutch engagement control of automatic transmission
JATCO LTD7 citations72
US6896639B2May 24, 2005
Prevention of slippage in belt-type continuously variable transmission
JATCO LTD4 citations62