Inventor
THELEN GERHARD
DE7 patents
Patents
7 patentsUS5132270AJul 21, 1992
Ultrasound method of reactivating deactivated hydrogenation catalyts
HUELS CHEMISCHE WERKE AG21 citations78
US5578546ANov 26, 1996
Catalyst for preparing bis-para-aminocyclohexylmethane containing a low proportion of trans/trans isomer by hydrogenation of methylenedianiline
HUELS CHEMISCHE WERKE AG18 citations73
US4960959AOct 2, 1990
Process for the manufacture of alkynediols by reaction of ketones with acetylene
HUELS CHEMISCHE WERKE AG9 citations71
US5773622AJun 30, 1998
Continuous process for the preparation of 4-amino-2,2,6,6-tetramethylpiperidine
HUELS CHEMISCHE WERKE AG13 citations67
US4912271AMar 27, 1990
Process for the manufacture of vinyl chloride by reaction of acetylene with hydrogen chloride
HUELS CHEMISCHE WERKE AG14 citations66
US5693817ADec 2, 1997
Solvent-free process for preparing 4-amino-2,2,6,6-tetramethylpiperidine
HUELS CHEMISCHE WERKE AG13 citations65
US5391750AFeb 21, 1995
Process for the preparation of 4-hydroxy-2,2,6,6-tetramethylpiperidine
HUELS CHEMISCHE WERKE AG8 citations62