Douglas G. Hunter has been granted 12 US patents while listed as an inventor at Borgwarner . The first was granted in 2001 and the most recent in April 2023. Douglas G. Hunter ranks #396,045 of 4,157,543 US inventors in our database (top 9.5%). Patent records list Douglas G. Hunter in Shelby Charter Township, MI, US.
Patents per Year Patents granted per year, 2001 to 2023 Bar chart with a peak of 2 patents in 2010. peak 2 2001: 1 patents 2001 2004: 1 patents 2004 2005: 1 patents 2005 2006: 1 patents 2006 2008: 1 patents 2008 2010: 2 patents 2010 2013: 2 patents 2013 2014: 1 patents 2014 2015: 1 patents 2015 2023: 1 patents 2023
Issued Patents All Time
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Showing 1–12 of 12 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
11635076
Variable displacement vane pump with improved pressure control and range
Dennis Koenig , Fuzheng Hu , Matthew J. Jannausch
2023-04-25
8961148
Unified variable displacement oil pump and vacuum pump
Dennis Koenig
2015-02-24
8672658
Vane pump with improved rotor and vane extension ring
—
2014-03-18
8512006
Hydraulic pump with variable flow and pressure and improved open-loop electric control
—
2013-08-20
$17,023,000
8430645
Two stage pressure regulation system for variable displacement hydraulic pumps
Matthew J. Jannausch
2013-04-30
7726948
Hydraulic pump with variable flow and variable pressure and electric control
Matthew J. Jannausch
2010-06-01
7674095
Variable displacement vane pump with variable target regulator
Thomas Haase
2010-03-09
$18,829,000
7396214
Variable displacement pump and control therefor
Dennis Koenig
2008-07-08
$15,738,000
7018178
Variable displacement pump and control therefore for supplying lubricant to an engine
Dennis Koenig
2006-03-28
$17,254,000
6896489
Variable displacement vane pump with variable target regulator
Albin J. Niemiec
2005-05-24
$5,508,000
6790013
Variable displacement vane pump with variable target regulator
Albin J. Niemiec
2004-09-14
$1,970,000
6186750
Oil pump control valve spool with pilot pressure relief valve
—
2001-02-13
$3,299,000