Inventor
WHITMARSH BRIAN W
US25 patents
⚠️ This page may combine multiple inventors who share the name “WHITMARSH BRIAN W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GM GLOBAL TECH OPERATIONS INC
6 patentsUS7797933B2Sep 21, 2010
Servo system augmented with an active material component
GM GLOBAL TECH OPERATIONS INC12 citations84
US7752935B2Jul 13, 2010
Control system for a multi-speed transmission
GM GLOBAL TECH OPERATIONS INC11 citations82
US8485931B1Jul 16, 2013
Multiplexed fluid control circuit
GM GLOBAL TECH OPERATIONS INC6 citations73
US8012063B2Sep 6, 2011
Pressure assisted park servo
GM GLOBAL TECH OPERATIONS INC3 citations61
US7896775B2Mar 1, 2011
Control system for electronic range selection in a dual clutch transmission
GM GLOBAL TECH OPERATIONS INC5 citations60
US7828684B2Nov 9, 2010
Control system for a differential in a transmission
GM GLOBAL TECH OPERATIONS INC3 citations60
GEN MOTORS CORP
5 patentsUS7325885B2Feb 5, 2008
Regulator valve for a torque-transmitting mechanism and method of engaging a torque-transmitting mechanism
GEN MOTORS CORP19 citations84
US7082851B2Aug 1, 2006
Hydraulic servo assembly for an internal electronic transmission range selection (ETRS) system
GEN MOTORS CORP13 citations82
US6669598B2Dec 30, 2003
Line pressure control for a continuously variable transmission
GEN MOTORS CORP18 citations80
US6595340B2Jul 22, 2003
Charging system for a rotating clutch assembly
GEN MOTORS CORP11 citations73
US6622835B2Sep 23, 2003
Engagement control having a multiplexed hydraulic circuit for controlling a torque converter clutch and shifting clutches in an automatic transmission
GEN MOTORS CORP6 citations59
GM GLOBAL TECH OPERATIONS LLC
5 patentsUS10167948B2Jan 1, 2019
Hydraulic control system for an automatic transmission
GM GLOBAL TECH OPERATIONS LLC7 citations83
US10012311B2Jul 3, 2018
Hydraulic control system for an automatic transmission having a neutral locked turbine mode
GM GLOBAL TECH OPERATIONS LLC2 citations73
US10161506B2Dec 25, 2018
Hydraulic control system for an automatic transmission with electronic transmission range selection
GM GLOBAL TECH OPERATIONS LLC3 citations72
US10161508B2Dec 25, 2018
Hydraulic control system for an automatic transmission having default gears applied through a clutch hydraulic exhaust circuit
GM GLOBAL TECH OPERATIONS LLC1 citations52
US9765885B2Sep 19, 2017
Method of controlling a hydraulic control system for a dual clutch transmission
GM GLOBAL TECH OPERATIONS LLC0 citations51