Inventor · disambiguated record
Hamid Vahabzadeh
Also filed as: VAHABZADEH HAMID
34 granted patents·3 pending applications·449 citations·filing 1985–2021
97Inventor score
Files withGEN MOTORS CORP19AVL POWERTRAIN ENGINEERING INC6GM GLOBAL TECH OPERATIONS INC4VAHABZADEH HAMID2LANG KENNETH K1
Top patents by PatentIndex Score
37 records- 0198US10955030B2Two-speed transmission for electric vehicle including a pair of mechanical diodes that are individually engaged to provide two gear ratiosAVL POWERTRAIN ENGINEERING INC·Filed 2020·Granted Mar 23, 2021·6 cites·13 claims
- 0296US7437963B2Power transmissionGM GLOBAL TECH OPERATIONS INC·Filed 2005·Granted Oct 21, 2008·42 cites·7 claims
- 0395US10208837B2Two-speed transmission for electric vehicleAVL POWERTRAIN ENGINEERING INC·Filed 2017·Granted Feb 19, 2019·7 cites·15 claims
- 0495US8808135B2Multiple speed transmission with a pump assisted launch deviceVAHABZADEH HAMID·Filed 2012·Granted Aug 19, 2014·37 cites·17 claims
- 0595US4644820AGeared-neutral continuously variable transmissionGEN MOTORS CORP·Filed 1986·Granted Feb 24, 1987·82 cites·3 claims
- 0688US10711866B2Two-speed transmission for electric vehicleAVL POWERTRAIN ENGINEERING INC·Filed 2018·Granted Jul 14, 2020·2 cites·12 claims
- 0785US6637387B1Variable valve actuating mechanism with magnetorheological fluid lost motion deviceGEN MOTORS CORP·Filed 2002·Granted Oct 28, 2003·23 cites·7 claims
- 0881US5047937AEngine CVT control systemGEN MOTORS CORP·Filed 1990·Granted Sep 10, 1991·34 cites·5 claims
- 0978US5180340AGuide mechanism for a traveling chain transmissionGEN MOTORS CORP·Filed 1991·Granted Jan 19, 1993·29 cites·3 claims
- 1075US8831848B2Electro-hydraulic clutch systemLANG KENNETH K·Filed 2012·Granted Sep 9, 2014·5 cites·16 claims
- 1175US8037989B2Torque transmitting device actuation system using a piezoelectric pumpGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Oct 18, 2011·6 cites·7 claims
- 1273US7586083B2Laser sensor apparatus and method for detecting transmission shaft torqueGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Sep 8, 2009·8 cites·12 claims
- 1373US5878832ASteering apparatus for motor vehicleGEN MOTORS CORP·Filed 1997·Granted Mar 9, 1999·28 cites·6 claims
- 1472US11346429B2Two-speed transmission for electric vehicle including a pair of mechanical diodes that are individually engaged to provide two gear ratiosAVL POWERTRAIN ENGINEERING INC·Filed 2021·Granted May 31, 2022·0 cites·20 claims
- 1572US6287227B1Hydraulic control for a continuously variable transmissionGEN MOTORS CORP·Filed 1999·Granted Sep 11, 2001·24 cites·1 claims
- 1669US7402124B2Control method and apparatus for a transmission clutch systemGM GLOBAL TECH OPERATIONS INC·Filed 2006·Granted Jul 22, 2008·3 cites·15 claims
- 1761US8240443B2Powertrain with engine oil-fed torque converterVAHABZADEH HAMID·Filed 2008·Granted Aug 14, 2012·3 cites·8 claims
- 1858US4710879ARatio control system for a continuously variable transmissionGEN MOTORS CORP·Filed 1986·Granted Dec 1, 1987·18 cites·3 claims
- 1955US2015158382A1Two-speed transmission for electric vehicleAVL POWERTRAIN ENGINEERING INC·Filed 2014·Application pending·0 cites
- 2054US7246673B2Hybrid powertrain with engine valve deactivationGEN MOTORS CORP·Filed 2004·Granted Jul 24, 2007·11 cites·16 claims
- 2154US5046177AEngine-CVT performance mode systemGEN MOTORS CORP·Filed 1990·Granted Sep 3, 1991·22 cites·10 claims
- 2249US5246406ATorque transmission system for connecting parallel shaftsGEN MOTORS CORP·Filed 1992·Granted Sep 21, 1993·11 cites·4 claims
- 2349US4608031AControl system for a continuously variable transmissionGEN MOTORS CORP·Filed 1985·Granted Aug 26, 1986·10 cites·3 claims
- 2445US8474586B2Clutch actuation assembly with satellite pistonsWILTON DARYL A·Filed 2010·Granted Jul 2, 2013·0 cites·18 claims
- 2544US8752519B2Air assist start stop methods and systemsMARRIOTT CRAIG D·Filed 2009·Granted Jun 17, 2014·0 cites·19 claims
- 2642US5234381AOpen-ended chain for a traveling chain transmission having reverse bend preventionGEN MOTORS CORP·Filed 1992·Granted Aug 10, 1993·8 cites·2 claims
- 2741US8649947B2Torque transfer mechanism and method for controlling in a vehicle launch operationSCHULTZ JOHN C·Filed 2011·Granted Feb 11, 2014·0 cites·19 claims
- 2840US10012298B2Torque converter for manual transmission and method of controlling the sameAVL POWERTRAIN ENGINEERING INC·Filed 2015·Granted Jul 3, 2018·0 cites·19 claims
- 2940US5201688ATorque transmission system for connecting parallel shaftsGEN MOTORS CORP·Filed 1991·Granted Apr 13, 1993·7 cites·8 claims
- 3039US2012000743A1Hill-holder assembly for a transmissionWITTKOPP SCOTT H·Filed 2010·Application pending·0 cites
- 3137US4747809AHydraulic control for a continuously variable transmissionGEN MOTORS CORP·Filed 1987·Granted May 31, 1988·5 cites·1 claims
- 3237US2003083175A1Full toroidal continuously variable unit with a high caster angleFiled 2001·Application pending·0 cites
- 3336US5762575ALock mechanism for a traveling chainGEN MOTORS CORP·Filed 1997·Granted Jun 9, 1998·5 cites·2 claims
- 3434US5180341ADerailing mechanism for a traveling chain transmissionGEN MOTORS CORP·Filed 1991·Granted Jan 19, 1993·4 cites·3 claims
- 3534US4684358AContinuously variable transmission and controlGEN MOTORS CORP·Filed 1986·Granted Aug 4, 1987·4 cites·2 claims
- 3632US5234380AMulti-speed torque transmission system for connecting parallel shaftsGEN MOTORS CORP·Filed 1992·Granted Aug 10, 1993·3 cites·4 claims
- 3731US5857931ATraveling chain derailerGEN MOTORS CORP·Filed 1997·Granted Jan 12, 1999·2 cites·2 claims
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