Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
JE

John W. Evans — 36 Patents

ESEvans Cooling Systems: 8 patents #1 of 2Top 50%
DRDroneup: 3 patents #3 of 4Top 75%
BTBeam Therapeutics: 1 patents #12 of 27Top 45%
NUNutrisearch: 1 patents #4 of 15Top 30%
SCStauffer Chemical: 1 patents #206 of 390Top 55%
Charleston, SC: #12 of 815 inventorsTop 2%
South Carolina: #209 of 15,501 inventorsTop 2%
Overall (All Time): #92,222 of 4,157,543Top 3%
36 Patents All Time
John W. Evans has been granted 36 US patents while listed as an inventor at Evans Cooling Systems. The first was granted in 1982 and the most recent in August 2025. John W. Evans ranks #92,222 of 4,157,543 US inventors in our database (top 2.2%). Patent records list John W. Evans in Charleston, SC, US.

Issued Patents All Time

Showing 1–25 of 36 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
12397912 Payload delivery and drop device for unmanned aerial vehicle for automatic release upon surface contact 2025-08-26
12133884 Methods of substituting pathogenic amino acids using programmable base editor systems David Bryson, Michael S. Packer, Yanfang Fu, Nicole Gaudelli, Jason Michael Gehrke +1 more 2024-11-05 $33,972,000
11667383 Payload delivery and drop device for unmanned aerial vehicle for automatic release upon surface contact 2023-06-06
11225325 Payload delivery and drop device for unmanned aerial vehicle for automatic release upon surface contact 2022-01-18
D917988 Burger press 2021-05-04
D903230 Food patty 2020-12-01
10266741 Apparatus and method for addition of ADH enzyme inhibitors to existing engine cooling systems Steven J. Pressley 2019-04-23
9994450 Method and apparatus for a low cost and carbon free point of use dissociation of water into elemental gases and production of hydrogen related power Edward L. Coyle 2018-06-12
8431038 Reduced toxicity ethylene glycol-based antifreeze/heat transfer fluid concentrates and antifreeze/heat transfer fluids J. Thomas Light 2013-04-30
8394287 Non-aqueous heat transfer fluid and use thereof J. Thomas Light 2013-03-12
8206607 Reduced toxicity ethylene glycol-based antifreeze/heat transfer fluid concentrates and antifreeze/heat transfer fluid concentrates and antifreeze/heat transfer fluids J. Thomas Light 2012-06-26
8137579 Non-aqueous heat transfer fluid and use thereof 2012-03-20
7655154 Non-aqueous heat transfer fluid and use thereof J. Thomas Light 2010-02-02
6230669 Hermetically-sealed engine cooling system and related method of cooling 2001-05-15
6199868 Piston assembly with piston ring support and sealing member 2001-03-13
D435383 Shelf Gregory W. Langenfeld, Lori L. Langenfeld 2000-12-26
6101988 Hermetically-sealed engine cooling system and related method of cooling 2000-08-15
6053132 Engine cooling system with temperature-controlled expansion chamber for maintaining a substantially anhydrous coolant 2000-04-25
5868105 Engine cooling system with temperature-controlled expansion chamber for maintaining a substantially anhydrous coolant, and related method of cooling 1999-02-09
5419287 Engine cooling system and heater circuit therefor 1995-05-30
5385123 Segregated cooling chambers for aqueous reverse-flow engine cooling systems 1995-01-31
5381762 Engine cooling system and radiator therefor 1995-01-17
5353751 Engine cooling system and radiator therefor 1994-10-11
5317994 Engine cooling system and thermostat therefor 1994-06-07
5255636 Aqueous reverse-flow engine cooling system 1993-10-26