Inventor
DWENGER DOUGLAS JOHN
US17 patents
⚠️ This page may combine multiple inventors who share the name “DWENGER DOUGLAS JOHN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GM GLOBAL TECH OPERATIONS INC
7 patentsUS8758179B2Jun 24, 2014
Electrically-variable transmission for a vehicle
GM GLOBAL TECH OPERATIONS INC7 citations81
US9052003B2Jun 9, 2015
Multi-speed transmission gear and clutch arrangement
GM GLOBAL TECH OPERATIONS INC3 citations62
US8376900B2Feb 19, 2013
Clutch assembly
GM GLOBAL TECH OPERATIONS INC3 citations62
US7703346B2Apr 27, 2010
Multi-speed transmission with countershaft gearing
GM GLOBAL TECH OPERATIONS INC3 citations62
US8991583B2Mar 31, 2015
Spring pack for a transmission
GM GLOBAL TECH OPERATIONS INC2 citations61
US8968146B2Mar 3, 2015
Multi-speed transmission
GM GLOBAL TECH OPERATIONS INC0 citations41
US9051980B2Jun 9, 2015
Direction selectable sprag
GM GLOBAL TECH OPERATIONS INC0 citations38
PORTELL PATRICK S
3 patentsUS8105196B2Jan 31, 2012
Automatic transmission gear and clutch arrangement
PORTELL PATRICK S10 citations82
US8628442B2Jan 14, 2014
Automatic transmission gear and clutch arrangement
PORTELL PATRICK S1 citations61
US8262526B2Sep 11, 2012
Automatic transmission gear and clutch arrangement
PORTELL PATRICK S4 citations61