Inventor
UMEYAMA MITSUHIRO
JP23 patents
⚠️ This page may combine multiple inventors who share the name “UMEYAMA MITSUHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOYOTA MOTOR CO LTD
21 patentsUS6306057B1Oct 23, 2001
Hybrid drive system
TOYOTA MOTOR CO LTD181 citations99
US6524217B1Feb 25, 2003
Apparatus for controlling vehicle drive units
TOYOTA MOTOR CO LTD159 citations98
US6201312B1Mar 13, 2001
Drive control system for hybrid vehicles
TOYOTA MOTOR CO LTD97 citations98
US6637530B1Oct 28, 2003
Hybrid vehicle control apparatus wherein battery is charged based on required charging amount and/or energy conversion efficiency of electric generator
TOYOTA MOTOR CO LTD52 citations96
US5533943AJul 9, 1996
Planetary gear device including planetary gears each having integrally formed large and small pinions
TOYOTA MOTOR CO LTD72 citations96
US6881165B2Apr 19, 2005
Hydraulic control apparatus of vehicle and control method
TOYOTA MOTOR CO LTD25 citations92
US6080199AJun 27, 2000
Gear designing method, gear manufacturing method, and gear manufactured by the same method
TOYOTA MOTOR CO LTD64 citations92
US5554082ASep 10, 1996
Transmission with integral large and small planetary gears, and method of assembling the transmission
TOYOTA MOTOR CO LTD26 citations92
US5269199ADec 14, 1993
Torional damper type flywheel device
TOYOTA MOTOR CO LTD22 citations92
US5156067AOct 20, 1992
Torsional damper type flywheel device
TOYOTA MOTOR CO LTD26 citations92
US4950205AAug 21, 1990
Flywheel with a torsional damper
TOYOTA MOTOR CO LTD24 citations92
US4693354ASep 15, 1987
Clutch damper
TOYOTA MOTOR CO LTD35 citations90
US5499703AMar 19, 1996
Peak torque decreasing apparatus for an automobile power train
TOYOTA MOTOR CO LTD23 citations88
US6508741B1Jan 21, 2003
Hydraulic control system for automatic transmissions
TOYOTA MOTOR CO LTD19 citations82
US5032107AJul 16, 1991
Flywheel device with a torsional damper
TOYOTA MOTOR CO LTD20 citations78
US5603241AFeb 18, 1997
Vehicle transmission system capable of simultaneous slipping of frictional coupling devices disposed in different gear trains between input and output shafts
TOYOTA MOTOR CO LTD15 citations74
US5097721AMar 24, 1992
Torsional damper type flywheel device
TOYOTA MOTOR CO LTD10 citations74
US5025680AJun 25, 1991
Torsional damper type flywheel device
TOYOTA MOTOR CO LTD12 citations73
US4947706AAug 14, 1990
Flywheel with a torsional damper
TOYOTA MOTOR CO LTD10 citations70
US5111714AMay 12, 1992
Torsional damper type flywheel device
TOYOTA MOTOR CO LTD15 citations67
US4950204AAug 21, 1990
Flywheel with a torsional damper
TOYOTA MOTOR CO LTD5 citations63