Inventor
KUBO SEITOKU
JP83 patents
⚠️ This page may combine multiple inventors who share the name “KUBO SEITOKU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOYOTA MOTOR CO LTD
34 patentsUS5856709AJan 5, 1999
Hybrid vehicle drive system having clutch between engine and synthesizing/distributing mechanism which is operatively connected to motor/generator
TOYOTA MOTOR CO LTD361 citations99
US5789882AAug 4, 1998
Vehicle control apparatus adapted to select engine-or motor-drive mode based on physical quantity reflecting energy conversion efficiencies in motor-drive mode
TOYOTA MOTOR CO LTD162 citations99
US5895333AApr 20, 1999
Hybrid vehicle drive system, wherein mechanism for synthesizing engine and motor outputs is disposed adjacent to transmission
TOYOTA MOTOR CO LTD124 citations98
US5875691AMar 2, 1999
Hybrid drive system
TOYOTA MOTOR CO LTD116 citations98
US5722911AMar 3, 1998
Vehicle control apparatus adapted to charge energy storage device by generator driven by surplus engine power which changes with required vehicle drive force
TOYOTA MOTOR CO LTD100 citations98
US5725064AMar 10, 1998
Hybrid vehicle with pumping loss reducing function
TOYOTA MOTOR CO LTD75 citations96
US4648289AMar 10, 1987
Idling control system for an automatic transmission providing anti roll back action
TOYOTA MOTOR CO LTD63 citations96
US4644826AFeb 24, 1987
Idling control system for an automatic transmission providing smooth starting off action
TOYOTA MOTOR CO LTD59 citations96
US4056988ANov 8, 1977
Driving system for use in motor vehicle
TOYOTA MOTOR CO LTD59 citations96
US5052247AOct 1, 1991
Hydraulic control apparatus for belt-and-pulley type continuously variable transmission, incorporating fail-safe protective means
TOYOTA MOTOR CO LTD29 citations93
US4733580AMar 29, 1988
Method of controlling a transmission of a vehicle in two different modes according to requirements for power and economy
TOYOTA MOTOR CO LTD40 citations93
US4693081ASep 15, 1987
Control system and method for controlling output type hydraulic fluid pump of automatic transmission providing increased pump output pressure with increase in engine load
TOYOTA MOTOR CO LTD46 citations93
US4528869AJul 16, 1985
Automatic transmission for vehicles
TOYOTA MOTOR CO LTD42 citations93
US4963124AOct 16, 1990
Planetary gear transmission for motor vehicle
TOYOTA MOTOR CO LTD53 citations92
US4879921ANov 14, 1989
Transaxle casing for automatic transmission
TOYOTA MOTOR CO LTD36 citations92
US4702341AOct 27, 1987
Four wheel drive vehicle slippage control device and method limiting center differential action according to input torque supplied thereto
TOYOTA MOTOR CO LTD38 citations92
US4940446AJul 10, 1990
Coupling structure for a rotating member and a shaft
TOYOTA MOTOR CO LTD23 citations89
US4881725ANov 21, 1989
Accumulator piston having a coil spring secured thereto
TOYOTA MOTOR CO LTD26 citations89
US4676123AJun 30, 1987
Automobile transmission with output shaft parallel to crank shaft and parking gear fixed to the output shaft
TOYOTA MOTOR CO LTD17 citations82
US4594914AJun 17, 1986
Transverse type automatic transmission with intermediate power transfer through lay shaft
TOYOTA MOTOR CO LTD25 citations82
US4428259AJan 31, 1984
Fail safe automatic transmission lock up clutch control system
TOYOTA MOTOR CO LTD24 citations82
US4428258AJan 31, 1984
Transmission control system with modified back pressure accumulator
TOYOTA MOTOR CO LTD22 citations82
US4406181ASep 27, 1983
Automatic transmission control system with holddown device
TOYOTA MOTOR CO LTD23 citations82
US4263823AApr 28, 1981
Compact transmission for use in automobiles having means for counterbalancing internal thrusts
TOYOTA MOTOR CO LTD17 citations82
US4944719AJul 31, 1990
Planetary gear type speed change device having one-way clutch operable in two functions
TOYOTA MOTOR CO LTD12 citations74
US4882952ANov 28, 1989
Hydraulic control system for automatic transmission with shifting shock reducing means
TOYOTA MOTOR CO LTD13 citations74
US4856381AAug 15, 1989
Fluid pressure control system for automatic transmission
TOYOTA MOTOR CO LTD14 citations74
US4836050AJun 6, 1989
Transverse type automatic transmission with two separate lay shaft elements
TOYOTA MOTOR CO LTD9 citations74
US4783960ANov 15, 1988
Fluid torque converter with axially cut away stator inner shell
TOYOTA MOTOR CO LTD18 citations74
US4768609ASep 6, 1988
Four wheel drive vehicle central differential torque transfer control device and method limiting torque on front wheels or on rear wheels
TOYOTA MOTOR CO LTD18 citations74
US4768399ASep 6, 1988
Four wheel drive power transmission system with clutch between central torque non balanced differential device and one wheel pair
TOYOTA MOTOR CO LTD16 citations74
US4726254AFeb 23, 1988
Four wheel drive power transmission system with front universal joint of front propeller shaft located towards gearbox from engine
TOYOTA MOTOR CO LTD19 citations74
US4721011AJan 26, 1988
Four wheel drive power transmission system with front propeller shaft including no universal joints connecting transfer device to front differential
TOYOTA MOTOR CO LTD13 citations74
US4702083AOct 27, 1987
Control system and method for controllable output type hydraulic fluid pump of automatic transmission providing decreased pump output in association with the engine starting condition
TOYOTA MOTOR CO LTD13 citations74
AISIN WARNER
13 patentsUS4866935ASep 19, 1989
Hydraulic torque converter
AISIN WARNER29 citations93
US4911260AMar 27, 1990
Four-wheel drive vehicle
AISIN WARNER23 citations92
US4763749AAug 16, 1988
Four-wheel drive vehicle
AISIN WARNER26 citations92
US4739678AApr 26, 1988
Oil separating structure of automatic transmission
AISIN WARNER25 citations92
US4349088ASep 14, 1982
Device for controlling a lock-up clutch in an automatic transmission with a lock-up clutch equipped fluid torque converter
AISIN WARNER32 citations92
US4748809AJun 7, 1988
Hydraulic servo mechanism of automatic transmission for vehicle
AISIN WARNER24 citations82
US4890512AJan 2, 1990
Hydraulic servo for friction coupling element of automatic transmission
AISIN WARNER9 citations74
US4854195AAug 8, 1989
Hydraulic control system for vehicular automatic transmission with two accumulator control values to vary back pressure to accumulator to follow the change in engine torque
AISIN WARNER13 citations74
US4753132AJun 28, 1988
Hydraulic servo for friction coupling devices of automatic transmissions
AISIN WARNER14 citations74
US4714146ADec 22, 1987
Friction coupling element of automatic transmission
AISIN WARNER16 citations74
US4690037ASep 1, 1987
Hydraulic servo for friction coupling element of automatic transmission
AISIN WARNER10 citations74
US4673072AJun 16, 1987
4-Wheel drive transmission control system
AISIN WARNER10 citations74
US4621710ANov 11, 1986
Bearing lubrication system for extension housing of vehicular transmission
AISIN WARNER15 citations74
AISIN AW CO
3 patentsUS5368531ANov 29, 1994
Control method of and system thereof for inversely proportionally raising and lowering servo hydraulic pressure, based on input torque, for engaging and disengaging frictional elements in automatic transmission
AISIN AW CO24 citations93
US5334114AAug 2, 1994
Control system for servo hydraulic pressure in vehicular automatic transmission
AISIN AW CO27 citations93
US5411451AMay 2, 1995
Control system for controlling the pressure of the oncoming servo hydraulic pressure based on a predicted time to sync from output shaft acceleration in automatic transmission
AISIN AW CO12 citations74
Showing the top 50 of 83 patents by PatentIndex Score.