Inventor

PERRARD ALAIN

FR4 patents

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

MESSIER BUGATTI

1 patent

US6383972B1May 7, 2002

Preparation of a catalyst support in activated carbon fibres

MESSIER BUGATTI19 citations81

ROQUETTE FRERES

1 patent

US9321783B2Apr 26, 2016

Method for preparing dialkyloxydianhyrohexitol by etherification of dianhydrohexitol using a light alcohol, in the presence of an acidic catalyst

ROQUETTE FRERES8 citations80

CLARIANT CHIMIE SA

1 patent

US5773632AJun 30, 1998

Process for the preparation of the enol lactone of 2-oxocyclohexlidene acetic acid and application to the preparation of 2-cuomaranone

CLARIANT CHIMIE SA7 citations62

HOECHST FRANCE

1 patent

US5616733AApr 1, 1997

Preparation method for 2-coumaranone

HOECHST FRANCE5 citations59