Inventor · disambiguated record
Jy-Jen F. Sah
Also filed as: SAH JY-JEN F · SAH JY-JEN FRANK
99 granted patents·1 pending application·1,126 citations·filing 1994–2016
99Inventor score
Files withSAH JY-JEN F29GM GLOBAL TECH OPERATIONS INC23HEAP ANTHONY H12GEN MOTORS CORP11KAMINSKY LAWRENCE A7
Top patents by PatentIndex Score
100 records- 0195US7908063B2Synchronous shift execution for hybrid transmissionGM GLOBAL TECH OPERATIONS INC·Filed 2006·Granted Mar 15, 2011·70 cites·19 claims
- 0295US7556120B2Method and apparatus to control hydraulic pressure in an electro-mechanical transmissionGM GLOBAL TECH OPERATIONS INC·Filed 2006·Granted Jul 7, 2009·40 cites·15 claims
- 0395US5983863ACompact high performance fuel system with accumulatorCUMMINS ENGINE CO INC·Filed 1994·Granted Nov 16, 1999·109 cites·192 claims
- 0493US8062174B2Method and apparatus to control clutch stroke volume in an electro-mechanical transmissionSAH JY-JEN F·Filed 2008·Granted Nov 22, 2011·15 cites·14 claims
- 0593US7670253B2Clutch control for hybrid transmissionGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Mar 2, 2010·36 cites·23 claims
- 0691US8187145B2Method and apparatus for clutch torque control in mode and fixed gear for a hybrid powertrain systemKAMINSKY LAWRENCE A·Filed 2008·Granted May 29, 2012·27 cites·10 claims
- 0790US9140337B2Method for model based clutch control and torque estimationSAH JY-JEN F·Filed 2008·Granted Sep 22, 2015·12 cites·8 claims
- 0890US8303463B2Method and apparatus to control clutch fill pressure in an electro-mechanical transmissionSAH JY-JEN F·Filed 2008·Granted Nov 6, 2012·12 cites·12 claims
- 0990US8224544B2Method and apparatus to control launch of a vehicle having an electro-mechanical transmissionSAH JY-JEN F·Filed 2007·Granted Jul 17, 2012·24 cites·9 claims
- 1090US8214093B2Method and apparatus to prioritize transmission output torque and input acceleration for a hybrid powertrain systemHEAP ANTHONY H·Filed 2008·Granted Jul 3, 2012·24 cites·13 claims
- 1190US8000866B2Engine control system for torque management in a hybrid powertrain systemGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Aug 16, 2011·23 cites·18 claims
- 1289US8801567B2Method and apparatus for executing an asynchronous clutch-to-clutch shift in a hybrid transmissionDEMIROVIC BESIM·Filed 2012·Granted Aug 12, 2014·18 cites·11 claims
- 1389US7356398B2Synchronous shift control in an electrically variable transmissionGEN MOTORS CORP·Filed 2003·Granted Apr 8, 2008·49 cites·27 claims
- 1489US7110869B2Hybrid transmission member speed determination, sensor diagnostics and fault recoveryGEN MOTORS CORP·Filed 2003·Granted Sep 19, 2006·31 cites·10 claims
- 1588US8475329B2Simultaneous auto-start and asynchronous shift for a hybrid vehicleSAH JY-JEN F·Filed 2011·Granted Jul 2, 2013·11 cites·13 claims
- 1688US8092339B2Method and apparatus to prioritize input acceleration and clutch synchronization performance in neutral for a hybrid powertrain systemHEAP ANTHONY H·Filed 2008·Granted Jan 10, 2012·24 cites·10 claims
- 1787US9352741B2Method and apparatus for controlling creep torque in a powertrain systemGM GLOBAL TECH OPERATIONS INC·Filed 2013·Granted May 31, 2016·11 cites·12 claims
- 1887US8170762B2Method and apparatus to control operation of a hydraulic pump for an electro-mechanical transmissionFOSTER MICHAEL D·Filed 2008·Granted May 1, 2012·13 cites·17 claims
- 1986US8412426B2Multi-mode hybrid transmission and method for performing a quasi-asynchronous shift in a hybrid transmissionSAH JY-JEN F·Filed 2009·Granted Apr 2, 2013·12 cites·19 claims
- 2084US8414449B2Method and apparatus to perform asynchronous shifts with oncoming slipping clutch torque for a hybrid powertrain systemHEAP ANTHONY H·Filed 2008·Granted Apr 9, 2013·17 cites·10 claims
- 2184US7010406B2Shift inhibit control for multi-mode hybrid driveGEN MOTORS CORP·Filed 2004·Granted Mar 7, 2006·37 cites·14 claims
- 2283US7537542B2Control system architecture for a hybrid powertrainGM GLOBAL TECH OPERATIONS INC·Filed 2006·Granted May 26, 2009·18 cites·24 claims
- 2382US8483898B2Method and apparatus for controlling speed of an electric pump in a vehicleNAQVI ALI K·Filed 2010·Granted Jul 9, 2013·6 cites·15 claims
- 2482US8287427B2Multi-mode hybrid transmission and shift control method for a multi-mode hybrid transmissionSAH JY-JEN F·Filed 2009·Granted Oct 16, 2012·14 cites·11 claims
- 2582US8282526B2Method and apparatus to create a pseudo torque phase during oncoming clutch engagement to prevent clutch slip for a hybrid powertrain systemHEAP ANTHONY H·Filed 2008·Granted Oct 9, 2012·13 cites·8 claims
- 2682US7568990B2Method and apparatus to control operation of a hydraulic control circuit for an electro-mechanical transmissionGM GLOBAL TECH OPERATIONS INC·Filed 2006·Granted Aug 4, 2009·15 cites·27 claims
- 2781US8170764B2Method and apparatus to reprofile input speed during speed during speed phase during constrained conditions for a hybrid powertrain systemKAMINSKY LAWRENCE A·Filed 2008·Granted May 1, 2012·14 cites·13 claims
- 2880US8079933B2Method and apparatus to control engine torque to peak main pressure for a hybrid powertrain systemKAMINSKY LAWRENCE A·Filed 2008·Granted Dec 20, 2011·12 cites·11 claims
- 2979US8628451B2Method and apparatus for executing a shift in a powertrain systemSAH JY-JEN F·Filed 2011·Granted Jan 14, 2014·7 cites·4 claims
- 3079US8414270B2Speed control of an electrically-actuated fluid pumpSAH JY-JEN F·Filed 2010·Granted Apr 9, 2013·4 cites·15 claims
- 3179US8290681B2Method and apparatus to produce a smooth input speed profile in mode for a hybrid powertrain systemKAMINSKY LAWRENCE A·Filed 2008·Granted Oct 16, 2012·12 cites·10 claims
- 3279US7028657B2Multi-stage compression ignition engine startGEN MOTORS CORP·Filed 2004·Granted Apr 18, 2006·21 cites·19 claims
- 3378US8395278B2Method and apparatus for starting an internal combustion engineCAWTHORNE WILLIAM R·Filed 2010·Granted Mar 12, 2013·4 cites·13 claims
- 3478US8221285B2Method and apparatus to offload offgoing clutch torque with asynchronous oncoming clutch torque, engine and motor torque for a hybrid powertrain systemHEAP ANTHONY H·Filed 2008·Granted Jul 17, 2012·11 cites·15 claims
- 3578US7324885B2Shift through neutral control in an electrically variable transmissionGEN MOTORS CORP·Filed 2004·Granted Jan 29, 2008·28 cites·12 claims
- 3678US7217221B2Method for active engine stop of a hybrid electric vehicleGEN MOTORS CORP·Filed 2004·Granted May 15, 2007·35 cites·26 claims
- 3777US7867135B2Electro-mechanical transmission control systemGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Jan 11, 2011·10 cites·19 claims
- 3876US9022165B2Vehicle lubrication flow controlSAH JY-JEN F·Filed 2012·Granted May 5, 2015·7 cites·20 claims
- 3976US8357074B2Electro-mechanical transmission control systemGM GLOBAL TECH OPERATIONS INC·Filed 2010·Granted Jan 22, 2013·5 cites·6 claims
- 4076US8285432B2Method and apparatus for developing a control architecture for coordinating shift execution and engine torque controlHEAP ANTHONY H·Filed 2008·Granted Oct 9, 2012·11 cites·25 claims
- 4176US8068948B2Method for controlling multiple EVT shifts in a multi-mode hybrid transmissionSAH JY-JEN F·Filed 2009·Granted Nov 29, 2011·7 cites·7 claims
- 4276US7706949B2Method and apparatus to control an electro-mechanical transmission during shifting eventGM GLOBAL TECH OPERATIONS INC·Filed 2006·Granted Apr 27, 2010·14 cites·7 claims
- 4376US7219000B2Speed control for an electrically variable transmissionGEN MOTORS CORP·Filed 2003·Granted May 15, 2007·27 cites·27 claims
- 4475US8645013B2Method and apparatus for driveline noise control in a hybrid powertrainSAH JY-JEN F·Filed 2011·Granted Feb 4, 2014·5 cites·10 claims
- 4575US8066620B2Method of clutch actuation for hybrid transmissionsSAH JY-JEN F·Filed 2009·Granted Nov 29, 2011·9 cites·14 claims
- 4675US7130734B2Two clutch fixed-ratio exit control for multi-mode hybrid driveGEN MOTORS CORP·Filed 2003·Granted Oct 31, 2006·28 cites·8 claims
- 4774US8489293B2Method and apparatus to control input speed profile during inertia speed phase for a hybrid powertrain systemHEAP ANTHONY H·Filed 2008·Granted Jul 16, 2013·9 cites·6 claims
- 4874US8182390B2Method for controlling neutral modes in a multi-mode hybrid transmissionSAH JY-JEN F·Filed 2009·Granted May 22, 2012·9 cites·8 claims
- 4973US9097337B2Method and apparatus to control hydraulic line pressure in an electro-mechanical transmissionSAH JY-JEN F·Filed 2008·Granted Aug 4, 2015·6 cites·10 claims
- 5073US8100803B2Hydraulic clutch control mechanism for a multi-mode hybrid transmissionFOSTER MICHAEL D·Filed 2008·Granted Jan 24, 2012·9 cites·6 claims
Showing the top 50 of 100 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Jy-Jen F. Sah files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →