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USPTO Patent Rankings Data through Dec 31, 2025
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James J. Feuling — 37 Patents

FEFeuling Engineering: 5 patents #1 of 1Top 100%
Chula Vista, CA: #8 of 742 inventorsTop 2%
California: #12,909 of 386,348 inventorsTop 4%
Overall (All Time): #88,321 of 4,157,543Top 3%
37 Patents All Time
James J. Feuling has been granted 37 US patents while listed as an inventor at Feuling Engineering. The first was granted in 1980 and the most recent in May 2005. James J. Feuling ranks #88,321 of 4,157,543 US inventors in our database (top 2.1%). Patent records list James J. Feuling in Chula Vista, CA, US.

Issued Patents All Time

Showing 1–25 of 37 patents

Patent #TitleCo-InventorsDate
D505370 Exhaust system for a motorcycle 2005-05-24
6679692 Oil pump 2004-01-20
6336471 Flow system for enhancing undirectional fluid flow 2002-01-08
D449620 Three cylinder engine 2001-10-23
D445074 Exhaust system for a motorcycle 2001-07-17
6199544 Combustion chamber system having an improved configuration with squish areas 2001-03-13
D417674 Motorcycle engine 1999-12-14
5893348 Combustion chamber system having an improved valve arrangement 1999-04-13
5638787 Combustion chamber system having an improved valve arrangement 1997-06-17
5595147 Contra-rotating twin crankshaft internal combustion engine 1997-01-21
5566653 Method and apparatus for clean cold starting of internal combustion engines 1996-10-22
5549083 Method and apparatus for clean cold starting of internal combustion engines 1996-08-27
5501191 Combustion chamber system having an improved valve arrangement 1996-03-26
5471966 Engine air intake filter and crankcase breather oil collection assembly 1995-12-05
5445135 Two-valve combustion chamber system 1995-08-29
5421301 Direct cylinder fuel injection system for internal combustion engines 1995-06-06
5335640 Rotor to casing seals for roots type superchargers 1994-08-09
5313921 High efficiency combustion chamber system 1994-05-24
5271102 Helmet with fluid flow termination surface 1993-12-21
5180299 Roots type supercharger 1993-01-19
5173576 Muffler for an internal combustion engine 1992-12-22
5097538 Helmet 1992-03-24
5085181 Electro/hydraulic variable valve timing system 1992-02-04
5042435 Manifold for an internal combustion engine using multiple carburetors 1991-08-27
5033581 Muffler for an internal combustion engine 1991-07-23