Inventor

Mitsuhiro Umeyama

Inventor

Toyota, JP

Overview

23→

Patents

1987–2005

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 23 as inventor

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

F16Fprimary

F16FSprings19%

F16HGearing16%

B60KArrangement or mounting of propulsion units or of transmissions in vehicles11%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%

B60WConjoint control of vehicle sub-units of different type or different function10%

Y02TClimate change mitigation technologies related to transportation10%

B60LPropulsion of electrically-propelled vehicles5%

F16DCouplings for transmitting rotation5%

Y10TTechnical subjects covered by former us classification5%

B60YIndexing scheme relating to aspects cross-cutting vehicle technology2%

PatentTitleYear

6,881,165'Hydraulic control apparatus of vehicle and control method'2005 6,662,904'Friction engagement element with lubrication'2003 6,637,530'Hybrid vehicle control apparatus wherein battery is charged based on required charging amount and/or energy conversion efficiency of electric generator'2003 6,524,217'Apparatus for controlling vehicle drive units'2003 6,508,741'Hydraulic control system for automatic transmissions'2003 6,306,057'Hybrid drive system'2001 6,201,312'Drive control system for hybrid vehicles'2001 6,080,199'Gear designing method, gear manufacturing method, and gear manufactured by the same method'2000 5,603,241'Vehicle transmission system capable of simultaneous slipping of frictional coupling devices disposed in different gear trains between input and output shafts'1997 5,554,082'Transmission with integral large and small planetary gears, and method of assembling the transmission'1996 5,533,943'Planetary gear device including planetary gears each having integrally formed large and small pinions'1996 5,499,703'Peak torque decreasing apparatus for an automobile power train'1996 5,269,199'Torional damper type flywheel device'1993 5,156,067'Torsional damper type flywheel device'1992 5,111,714'Torsional damper type flywheel device'1992 5,097,721'Torsional damper type flywheel device'1992 5,065,642'Apparatus for absorbing torque variation'1991 5,032,107'Flywheel device with a torsional damper'1991 5,025,680'Torsional damper type flywheel device'1991 4,950,205'Flywheel with a torsional damper'1990 4,950,204'Flywheel with a torsional damper'1990 4,947,706'Flywheel with a torsional damper'1990 4,693,354'Clutch damper'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–2005Patents assigned to TOYOTA MOTOR CO LTD (23)· patent assignee history

1987Patents assigned to NOK MEGULASTIK CO LTD (1)· patent assignee history

1987–2003Based in Toyota, JP· patent location history

1991Patents assigned to AISIN SEIKI KABUSHIKI KAISHA K (1)· patent assignee history

1996–2003Patents assigned to AISIN AW CO (2)· patent assignee history

2000–2005Based in Okazaki, JP· patent location history

2001–2003Based in Susono, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TOYOTA MOTOR CO LTD	23	1987–2005
AISIN AW CO	2	1996–2003
AISIN SEIKI KABUSHIKI KAISHA K	1	1991
NOK MEGULASTIK CO LTD	1	1987

Locations

Location	Patents	Span
Toyota, JP	16	1987–2003
Susono, JP	5	2001–2003
Okazaki, JP	2	2000–2005