Sergio Quelhas — 17 Patents at General Motors

Sergio Quelhas has been granted 17 US patents while listed as an inventor at General Motors. The first was granted in 2003 and the most recent in August 2025. Sergio Quelhas ranks #263,971 of 4,157,543 US inventors in our database (top 6.3%). Patent records list Sergio Quelhas in Ann Arbor, MI, US.

Patents per Year

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12392300	Vehicle with gasoline particulate filter soot regeneration strategy with criteria emission reduction for low NOX emissions	Chengke Liu, Rafat F. Hattar	2025-08-19
11434810	Vehicle thermal management system including mechanically driven pump, rotary valve(s), bypass line allowing engine outlet coolant to bypass heat exchanger(s), or combinations thereof	Michael A. Smith, Eugene V. Gonze, Daniel L. Molnar	2022-09-06	$32,110,000
11415040	Heating oil for enhanced active thermal coolant system	Michael A. Smith, Robert Gallon, Andrew A. Raftopoulos, Eugene V. Gonze, Bryan K. Pryor	2022-08-16	$39,255,000
11078825	Method and apparatus for control of propulsion system warmup based on engine wall temperature	Yiran Hu, David E. Edwards, Min Sun, Michael J. Paratore, Jr., JUN-MIN CHEN +1 more	2021-08-03	$60,431,000
10895192	Dual pump system and method for cooling an engine of a motor vehicle	Michael A. Smith, Scott K. Wilson, Eugene V. Gonze, James B. Hicks, Anthony J. Corsetti	2021-01-19	$139,680,000
10669922	System and method for adjusting the rate of coolant flow through an engine based on coolant pressure	Eugene V. Gonze, Vijay Ramappan, Michael J. Paratore, Jr.	2020-06-02	$16,247,000
10605151	Electric pump operating strategy	Eugene V. Gonze, Vijay Ramappan, Michael J. Paratore, Jr.	2020-03-31	$7,118,000
10323564	Systems and methods for increasing temperature of an internal combustion engine during a cold start including low coolant flow rates during a startup period	Eugene V. Gonze, Mario Reichenback, Torsten Mueller	2019-06-18	$10,623,000
10273872	Air-to-air charge air cooler (A-CAC) for a vehicle	John W. Myers, Werner Filsinger	2019-04-30	$9,833,000
10161501	System and method for adjusting coolant flow through a cooling system of a vehicle to increase a warming rate of a transmission	Eugene V. Gonze, Michael J. Paratore, Jr.	2018-12-25
9752539	Method for diagnosing leaks downstream of the purge flow control orifice	Darrell W. Burleigh, Lawrence A. Staat, Kenneth C. Swartz	2017-09-05	$8,734,000
9719389	System and method for reducing cold start emissions using an active exhaust throttle valve and an exhaust gas recirculation loop	Amanpal S. Grewal	2017-08-01	$13,220,000
8978453	Crank signal error detection using a cam signal interval	Salem Ahmad Fayyad, Andy Tenka	2015-03-17
8662056	Fuel pressure control system and method having a variable pull-in time interval based pressure	William J. Fedor, III, Charles A. Iannone	2014-03-04
6933151	Diagnostic system for monitoring catalyst performance	Owen Bailey, Jean Balland, Bart Hubert Schreurs	2005-08-23	$4,490,000
6803236	Diagnostic system for monitoring catalyst performance	Owen Bailey, Jean Balland, Bart Hubert Schreurs	2004-10-12	$956,000
6622691	Control method for a direct injection gas engine with fuel vapor purging	Andrew P. Bagnasco, Michael J. Steckler, Derk Geurts	2003-09-23	$1,664,000

Sergio Quelhas — 17 Patents

Patents per Year

Issued Patents All Time

Patent Widget