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Inventor

FREEL JOHN

6 patents
⚠️ This page may combine multiple inventors who share the name “FREEL JOHN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CHEVRON USA INC

3 patents
US6383236B1May 7, 2002

Low emission, non-oxygenated fuel composition

CHEVRON USA INC34 citations91
US6132479AOct 17, 2000

Low emission, non-oxygenated fuel composition

CHEVRON USA INC30 citations91
USH2182HFeb 6, 2007

Low emission, non-oxygenated fuel composition

CHEVRON USA INC14 citations82

GULF RESEARCH DEVELOPMENT CO

3 patents
US4303127ADec 1, 1981

Multistage clean-up of product gas from underground coal gasification

GULF RESEARCH DEVELOPMENT CO93 citations91
US4371428AFeb 1, 1983

Separating vinyltoluene from other alkenylaromatics

GULF RESEARCH DEVELOPMENT CO9 citations73
US4280881AJul 28, 1981

Separating indene from unsaturated alkylaromatics

GULF RESEARCH DEVELOPMENT CO11 citations73