Inventor

Seitoku Kubo

Inventor

Toyota, JP

Overview

1977–2005

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 83 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

F16Hprimary

F16HGearing45%

B60KArrangement or mounting of propulsion units or of transmissions in vehicles14%

B60WConjoint control of vehicle sub-units of different type or different function9%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%

Y10TTechnical subjects covered by former us classification8%

Y02TClimate change mitigation technologies related to transportation5%

B60LPropulsion of electrically-propelled vehicles3%

F16DCouplings for transmitting rotation2%

F16FSprings1%

B60TVehicle brake control systems or parts thereof1%

PatentTitleYear

6,864,652'Drive system for automotive vehicle of front-and-rear wheel drive type'2005 5,895,333'Hybrid vehicle drive system, wherein mechanism for synthesizing engine and motor outputs is disposed adjacent to transmission'1999 5,875,691'Hybrid drive system'1999 5,856,709'Hybrid vehicle drive system having clutch between engine and synthesizing/distributing mechanism which is operatively connected to motor/generator'1999 5,789,882'Vehicle control apparatus adapted to select engine-or motor-drive mode based on physical quantity reflecting energy conversion efficiencies in motor-drive mode'1998 5,769,749'Automatic transmission'1998 5,725,064'Hybrid vehicle with pumping loss reducing function'1998 5,722,911'Vehicle control apparatus adapted to charge energy storage device by generator driven by surplus engine power which changes with required vehicle drive force'1998 5,411,451'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'1995 5,368,531'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'1994 5,334,114'Control system for servo hydraulic pressure in vehicular automatic transmission'1994 5,254,053'Five-speed automatic transmission'1993 5,235,877'Shift control apparatus for automatic transmission'1993 5,052,247'Hydraulic control apparatus for belt-and-pulley type continuously variable transmission, incorporating fail-safe protective means'1991 4,963,124'Planetary gear transmission for motor vehicle'1990 4,944,719'Planetary gear type speed change device having one-way clutch operable in two functions'1990 4,940,446'Coupling structure for a rotating member and a shaft'1990 4,938,096'Automatic transmission for vehicle having forward clutch and counter drive gear positioned between torque converter and gear mechanism'1990 4,911,260'Four-wheel drive vehicle'1990 4,909,345'Power transmission device for four wheel drive vehicles'1990 4,896,739'Four-wheel drive vehicle'1990 4,890,512'Hydraulic servo for friction coupling element of automatic transmission'1990 4,882,952'Hydraulic control system for automatic transmission with shifting shock reducing means'1989 4,881,725'Accumulator piston having a coil spring secured thereto'1989 4,879,921'Transaxle casing for automatic transmission'1989 4,875,665'Accumulator'1989 4,866,935'Hydraulic torque converter'1989 4,856,381'Fluid pressure control system for automatic transmission'1989 4,854,195'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'1989 4,836,050'Transverse type automatic transmission with two separate lay shaft elements'1989 4,817,472'Transmission control system with protection against excessively high speed downshifting'1989 4,803,901'Method and system for detecting the rotation rate of the output shaft of a torque converter'1989 4,783,960'Fluid torque converter with axially cut away stator inner shell'1988 4,768,399'Four wheel drive power transmission system with clutch between central torque non balanced differential device and one wheel pair'1988 4,768,609'Four wheel drive vehicle central differential torque transfer control device and method limiting torque on front wheels or on rear wheels'1988 4,768,633'Torque converter lock up clutch rotary shock absorber with inner plate element location construction'1988 4,763,748'Four-wheel drive vehicle'1988 4,763,749'Four-wheel drive vehicle'1988 4,753,132'Hydraulic servo for friction coupling devices of automatic transmissions'1988 4,748,809'Hydraulic servo mechanism of automatic transmission for vehicle'1988 4,739,678'Oil separating structure of automatic transmission'1988 4,733,580'Method of controlling a transmission of a vehicle in two different modes according to requirements for power and economy'1988 4,726,254'Four wheel drive power transmission system with front universal joint of front propeller shaft located towards gearbox from engine'1988 4,721,011'Four wheel drive power transmission system with front propeller shaft including no universal joints connecting transfer device to front differential'1988 4,714,146'Friction coupling element of automatic transmission'1987 4,702,083'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'1987 4,702,341'Four wheel drive vehicle slippage control device and method limiting center differential action according to input torque supplied thereto'1987 4,693,081'Control system and method for controlling output type hydraulic fluid pump of automatic transmission providing increased pump output pressure with increase in engine load'1987 4,690,037'Hydraulic servo for friction coupling element of automatic transmission'1987 4,682,534'Hydraulic servo for friction coupling element of automatic transmission'1987 4,676,123'Automobile transmission with output shaft parallel to crank shaft and parking gear fixed to the output shaft'1987 4,673,072'4-Wheel drive transmission control system'1987 4,648,289'Idling control system for an automatic transmission providing anti roll back action'1987 4,644,826'Idling control system for an automatic transmission providing smooth starting off action'1987 4,631,982'Electronically controlled automatic transmission control system'1986 4,621,710'Bearing lubrication system for extension housing of vehicular transmission'1986 4,594,914'Transverse type automatic transmission with intermediate power transfer through lay shaft'1986 4,528,869'Automatic transmission for vehicles'1985 4,480,499'Driving device for automobiles'1984 4,441,594'Fluid type torque converter apparatus'1984 4,440,276'Torque converter lock up clutch shock absorber with pressure transmitting hole through disk element'1984 4,437,358'Transmission with torque converter and lock up clutch with lubrication and pressurization system'1984 4,428,259'Fail safe automatic transmission lock up clutch control system'1984 4,428,258'Transmission control system with modified back pressure accumulator'1984 4,427,098'Torque transmission apparatus including direct coupling clutch and fluid-type torque converter'1984 4,426,891'Radially outward return spring for transmission brake'1984 4,417,307'Automatic transmission with electrical override'1983 4,406,181'Automatic transmission control system with holddown device'1983 4,406,179'Apparatus for preloading an antifriction bearing in an automatic transmission'1983 4,395,926'Hydraulic control system for automatic transmission'1983 4,394,827'Transmission control system with modified friction engaging mechanism actuating pressure'1983 4,391,166'Hydraulic fluid pressure control system for an automatic transmission'1983 4,380,179'Engagement device in automatic transmission'1983 4,356,742'Transmission control system providing overlapped shift line combinations'1982 4,349,088'Device for controlling a lock-up clutch in an automatic transmission with a lock-up clutch equipped fluid torque converter'1982 4,315,443'Transmission for use in motor vehicle'1982 4,280,374'Transmission for use in motor vehicle'1981 4,263,823'Compact transmission for use in automobiles having means for counterbalancing internal thrusts'1981 4,258,586'Compact transmission for use in automobiles'1981 4,241,622'Automatic transmission with overdrive'1980 4,188,839'Throttling control valve and a system for controlling downshift timing of an automatic transmission for vehicles'1980 4,098,143'Breathing system for an automatic transmission'1978 4,056,988'Driving system for use in motor vehicle'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1999Patents assigned to TOYOTA MOTOR CO LTD (76)· patent assignee history

1977–2005Based in Toyota, JP· patent location history

1980Based in Sakae, JP· patent location history

1982–1990Patents assigned to AISIN WARNER (18)· patent assignee history

1986–1988Patents assigned to TOYOTA MOTOR CORP (3)· patent assignee history

1989–1995Patents assigned to AISIN AW CO (6)· patent assignee history

1993Patents assigned to TOYODA JIDOSHA KABUSHIKI KAISH (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TOYOTA MOTOR CO LTD	76	1977–1999
AISIN WARNER	18	1982–1990
AISIN AW CO	6	1989–1995
TOYOTA MOTOR CORP	3	1986–1988
TOYODA JIDOSHA KABUSHIKI KAISH	1	1993

Locations

Location	Patents	Span
Toyota, JP	82	1977–2005
Sakae, JP	1	1980