Inventor
WEYER HANS-JUERGEN
DE32 patents
⚠️ This page may combine multiple inventors who share the name “WEYER HANS-JUERGEN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BASF AG
28 patentsUS5099074AMar 24, 1992
Process for the preparation of polyether glycols
BASF AG53 citations96
US6291731B1Sep 18, 2001
Continuous method for producing propargyl chloride
BASF AG9 citations74
US5741888AApr 21, 1998
Removal of heteropoly compounds from polyethers, polyesters and polyether esters
BASF AG8 citations74
US5561217AOct 1, 1996
Preparation of polyether glycols
BASF AG9 citations74
US5536854AJul 16, 1996
Preparation of 2-methyl-1,4-butanediol and 3-methyltetrahydrofuran
BASF AG13 citations74
US5434273AJul 18, 1995
Preparation of N-substituted 2-pyrrolidones
BASF AG17 citations74
US5416240AMay 16, 1995
Preparation of poloxy-alkylene glycols
BASF AG17 citations74
US5391771AFeb 21, 1995
Hydrogenation of citric acid
BASF AG16 citations74
US5276165AJan 4, 1994
Preparation of N-substituted lactams
BASF AG18 citations74
US5008408AApr 16, 1991
Preparation of 1,4-butanediol and tetrahydrofuran
BASF AG12 citations74
US5414143AMay 9, 1995
Preparation of polyoxyalkylene glycol monoethers of monohydric alcohols
BASF AG10 citations73
US5395959AMar 7, 1995
Adjustment of the average molecular weight of polyoxyalkylene glycols and polyoxyalkylene derivatives in the heteropolyacid-catalyzed polymerization of cyclic ethers and/or acetals with ring cleavage
BASF AG9 citations73
US5824769AOct 20, 1998
Polyether, polyester and polyether ester purification process
BASF AG4 citations63
US6245954B1Jun 12, 2001
Method of producing alkyl chloride, alkenyl chloride and alkinyl chloride
BASF AG3 citations62
US6162939ADec 19, 2000
Method for producing thiochloroformates
BASF AG2 citations62
US6153784ANov 28, 2000
Removal of halides from halide-containing nitrile mixtures
BASF AG3 citations62
US5770747AJun 23, 1998
Preparation of 1,2-butylene oxide
BASF AG2 citations62
US5714638AFeb 3, 1998
Preparation of polyoxyalkylene glycol monoether of tert-butyl alcohol and product
BASF AG2 citations62
US5659068AAug 19, 1997
Preparation of polyoxyalkylene glycol monoesters of monocarboxylic acids
BASF AG4 citations62
US5097077AMar 17, 1992
Purification of heteropolyacid-containing polyalkylene ether glycols
BASF AG6 citations62
US5965032AOct 12, 1999
Purification of α-, β- or γ-substituted carboxylic acids
BASF AG5 citations59
US5951829ASep 14, 1999
Separation of heteropoly compounds from polyethers, polyesters and polyether esters
BASF AG1 citations52
US5387701AFeb 7, 1995
Preparation of 4-hydroxymethyltetrahydropyran
BASF AG1 citations52
US5371242ADec 6, 1994
Preparation of products of the reduction of 4-hydroxybutyric acid derivatives
BASF AG1 citations52
US6242639B1Jun 5, 2001
Preparation of neopentyl glycol hydroxyprivalate granules
BASF AG1 citations51
US5904814AMay 18, 1999
Removal of water and ammonia from benzophenone imine reactor effluents
BASF AG1 citations51
US6262300B1Jul 17, 2001
Method for producing chlorocarboxylic acid chlorides
BASF AG0 citations41
US6554966B1Apr 29, 2003
Process for preparing essentially formic acid-free N-alkyl-N′-methylalkyleneureas
BASF AG0 citations38