Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Continuous isolation of phthalic anhydride and maleic anhydride from reaction gases

Continuous isolation of phthalic anhydride and maleic anhydride from reaction gases

US Patent 4568427 · Granted Feb 4, 1986

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Catalysts containing copper and zinc for the purification of ethylene2008
Two-stage reactor for the production of melamine2007
Aqueous formaldehyde solutions with a low tetroxane content2002
Preparation of alcohols2001
Process and catalyst for the selective hydrogenation of butynediol to butenediol1998
Preparation of phthalic anhydride from o-xylene1993
Preparation of formic acid1993
Obtaining very pure maleic anhydride from crude maleic anhydride1990
Obtaining maleic anhydride not prone to discolor1990
Preparation of vinyl chloride by thermal cracking of 1,2-dichloroethane1988
Desublimator for isolating sublimation products from reaction gases1984
Removal of impurities from vinyl chloride1983