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Inventor

Takeo Hiramatsu

Inventor
Nagaokakyo, JP

Overview

54→
Patents
1977–2021
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 54 as inventor

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

F16Hprimary
F16HGearing56%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles15%
B60WConjoint control of vehicle sub-units of different type or different function8%
F16DCouplings for transmitting rotation8%
Y10TTechnical subjects covered by former us classification6%
F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids2%
H03KPulse technique1%
H04BTransmission1%
H04LTransmission of digital information, e.g. telegraphic communication1%
PatentTitleYear
10,892,923Signal output circuit, transmission circuit and integrated circuit20218,439,794'Automatic transmission'20138,303,452'Automatic transmission'20128,202,193'Automatic transmission'20128,197,381'Automatic transmission'20128,007,399'Automatic transmission'20117,935,018'Automatic transmission'20117,914,415'Automatic transmission'20117,909,724'Automatic transmission'20117,909,725'Automatic transmission'20117,833,123'Automatic transmission'20107,677,997'Double piston and belt type continuously variable transmission'20105,730,683'Shift control method for automatic transmission and apparatus thereof'19985,370,016'Speed change control apparatus and method of an automotive automatic transmission'19945,010,786'Automatic transmission control pressure regulator having speed sensitive valve arrangement'19915,003,842'Control device for automatic transmission gear system'19914,995,491'Power transmission apparatus'19914,984,483'Control system for an automatic transmission of a motor vehicle'19914,980,521'Power transmission apparatus'19904,947,734'Method of duty-ratio control for hydraulically actuated slip control lock-up clutch and transmission'19904,947,330'Method of input power on/off discrimination for an automatic vehicular transmission system'19904,943,920'Operation control method for a frictional engagement element'19904,922,424'Control method for a driving system provided in a vehicle'19904,919,248'Drive coupling unit'19904,903,551'Failsafe hydraulic control system for vehicle automatic transmission'19904,881,626'Power transmission apparatus for vehicle of four-wheel drive type'19894,829,769'Hydraulic transmission coupling apparatus'19894,813,307'Method of controlling hydraulic pressure for an automatic transmission gear system'19894,793,216'Control apparatus for automatic transmission gear system for vehicle'19884,791,568'Method of controlling hydraulic pressure for an automatic transmission gear system'19884,775,938'System and method for controlling a power transmission of a vehicle'19884,754,403'Hydraulic pressure control system of automatic transmissions for vehicle'19884,742,732'Automatic transmission system for a vehicle'19884,732,253'Power transmission'19884,732,245'Control apparatus for clutch torque in hydrodynamic power transmitting device'19884,727,966'Differential with differential motion limiting mechanism'19884,719,998'Power transmission system for vehicle'19884,676,336'Power transmission apparatus for vehicle'19874,665,773'Continuously variable transmission apparatus for automobile'19874,662,488'Control system for a clutch interposed between input and output shafts of hydrodynamic power transmitting device'19874,660,697'Slip clutch device control method'19874,561,328'Creeping preventing apparatus in automatic transmission for vehicle'19854,558,612'Vehicular automatic speed change gear assembly'19854,538,482'Hydraulic control system in automatic transmission gear for 4 advance speeds'19854,534,244'Automatic transmission gear system for vehicles'19854,519,273'Automatic transmission for vehicles'19854,513,639'Creeping preventing apparatus in automatic transmission for vehicle'19854,506,563'Hydraulic control system for automatic transmission gear'19854,468,988'Slip control system for a clutch'19844,466,311'Slip control system for a clutch'19844,457,411'Torque transmission device'19844,428,467'Friction clutch control device'19844,125,038'Speed change gear in a hydraulic type automatic transmission'19784,052,930'Electric and hydraulic servomechanism controlling device'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1998Patents assigned to MITSUBISHI MOTORS CORP (39)· patent assignee history
1977–2010Based in Kyoto, JP· patent location history
1978–2013Based in Nagaokakyo, JP· patent location history
1985–2013Patents assigned to HIRAMATSU TAKEO (6)· patent assignee history
1985Based in Ukyo-Ku, JP· patent location history
1989Based in Kogyo, JP· patent location history
1990–1991Patents assigned to KOYO SEIKO CO (3)· patent assignee history
2010–2013Patents assigned to JATCO LTD (11)· patent assignee history
2012Patents assigned to AOTA KAZUAKI (1)· patent assignee history
2021Based in Yokohama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MITSUBISHI MOTORS CORP391977–1998
JATCO LTD112010–2013
HIRAMATSU TAKEOself61985–2013
KOYO SEIKO CO31990–1991
AOTA KAZUAKI12012
Locations
LocationPatentsSpan
Nagaokakyo, JP301978–2013
Kyoto, JP211977–2010
Yokohama, JP12021
Kogyo, JP11989
Ukyo-Ku, JP11985