Inventor
WITZEL TOM
DE47 patents
⚠️ This page may combine multiple inventors who share the name “WITZEL TOM”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BASF AG
45 patentsUS5527946AJun 18, 1996
Preparation of aliphatic alpha, omega-aminonitriles
BASF AG41 citations93
US6022999AFeb 8, 2000
Preparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamine having a cis/trans isomer ratio of at least 70:30
BASF AG22 citations92
US5756845AMay 26, 1998
Preparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamine
BASF AG23 citations92
US5696048ADec 9, 1997
Cobalt catalysts
BASF AG32 citations92
US5646277AJul 8, 1997
Preparation of caoprolactam
BASF AG19 citations92
US5536691AJul 16, 1996
Cobalt catalysts and a process required for their preparation
BASF AG27 citations92
US5489663AFeb 6, 1996
Preparation of polyisocyanates containing isocyanurate groups and use thereof
BASF AG50 citations92
US5463130AOct 31, 1995
Preparation of peralkylated amines
BASF AG23 citations92
US5371292ADec 6, 1994
Preparation of 3-aminomethyl-3,5,5-trimethyl-cyclohexylamine
BASF AG24 citations92
US6201160B1Mar 13, 2001
Preparation of alcohols
BASF AG34 citations91
US5663444ASep 2, 1997
Preparation of a pure dialkylaminoethanol stable against discoloration
BASF AG32 citations91
US5728317AMar 17, 1998
Polyisocyanate compositions having a long shelf life and obtainable by phosgene-free methods, their preparation and their use
BASF AG23 citations90
US5739324AApr 14, 1998
Preparation of caprolactam
BASF AG15 citations82
US6166207ADec 26, 2000
Preparation of bicyclic amidines and diazacycloalkenes
BASF AG7 citations74
US6114567ASep 5, 2000
Preparation of aliphatic alpha, omega-aminonitriles
BASF AG9 citations74
US5840981ANov 24, 1998
Process for producing N-methyl-2(3,4 dimethoxyphenyl)-ethylamine
BASF AG9 citations74
US5756808AMay 26, 1998
Preparation of aliphatic, alpha omega-aminonitriles
BASF AG7 citations74
US5717090AFeb 10, 1998
Simultaneous preparation of caprolactam and hexamethylenediamine
BASF AG15 citations74
US5557011ASep 17, 1996
Preparation of diamines
BASF AG12 citations74
US5495014AFeb 27, 1996
Preparation of caprolactam
BASF AG15 citations74
US5684201ANov 4, 1997
Preparation of aliphatic and cycloaliphatic oximes
BASF AG7 citations73
US5239120AAug 24, 1993
Preparation of 2-(3-aminopropyl)-cycloalkylamines
BASF AG9 citations73
US5166443ANov 24, 1992
Preparation of 2,2-disubstituted pentane-1,5-diamines
BASF AG8 citations73
US5481037AJan 2, 1996
Decontamination of tertiary amines from primary and secondary amines
BASF AG7 citations68
US5801268ASep 1, 1998
Preparation of aliphatic alpha omega-aminonitriles
BASF AG2 citations63
US5705699AJan 6, 1998
Preparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamine
BASF AG5 citations63
US5576449ANov 19, 1996
Preparation of 2-substituted but-2-ene-1,4-dial-4-acetals and novel hemiacetals of glyoxal monoacetals
BASF AG5 citations63
US5565583AOct 15, 1996
Preparation of 2-substituted but-2-ene-1, 4-dial-4-acetals and novel hemiacetals of glyoxal monoacetals
BASF AG4 citations63
US5502185AMar 26, 1996
Preparation of lactams
BASF AG4 citations63
US5434291AJul 18, 1995
Preparation of aminopropionitriles
BASF AG4 citations63
US5917080AJun 29, 1999
Preparation of 2-cyano-3,3-diarylacrylic esters
BASF AG6 citations62
US5679855AOct 21, 1997
Preparation of benzophenone imines
BASF AG4 citations62
US5554787ASep 10, 1996
2,2-dialkylpentane 1,5-diisocyanates, 2,2-dialkylpentane 1,5-diurethanes and 2,2-dialkylpentane 1,5-dicarbamoyl chlorides, and their preparation and use
BASF AG2 citations62
US5516928AMay 14, 1996
Preparaion of 3.cyano-3,5,5-trimethylcyclohexanone
BASF AG4 citations62
US5334745AAug 2, 1994
Preparation of 3-aminopropionitriles
BASF AG4 citations62
US4999453AMar 12, 1991
Preparation of olefinically unsaturated carboxylic esters having a terminal ester group
BASF AG3 citations62
US5118864AJun 2, 1992
Preparation of cyclopentenones
BASF AG3 citations61
US6013803AJan 11, 2000
Sterically hindered 4-amino-piperidine with a low dimer content, its production and use
BASF AG1 citations52
US6011157AJan 4, 2000
Process for purifying sterically hindered 4-amino piperidines
BASF AG1 citations52
US5801267ASep 1, 1998
Preparation of aliphatic alpha, omega-aminonitriles
BASF AG0 citations52
US5347033ASep 13, 1994
Preparation of 5-cyanovaleramide
BASF AG1 citations52
US5344983ASep 6, 1994
Selective preparation of linear pentane-1,5-diamines in increased yields
BASF AG1 citations52
US5202465AApr 13, 1993
Preparation of 2-methylenepropane-1,3-diol dicarboxylates
BASF AG0 citations52
US5756839AMay 26, 1998
Process for preparing D,L-aspartic acid from ammonium salts of the maleic acid
BASF AG1 citations49
US5166447ANov 24, 1992
Preparation of cyclopentanones
BASF AG0 citations42
BASF AKTIENGESELLSHCAFT
2 patentsUS6018074AJan 25, 2000
Process for the preparation of polyalcohols
BASF AKTIENGESELLSHCAFT20 citations92
US5917023AJun 29, 1999
Reductive coupling of nitrobenzene or nitrobenzenes substituted on the nucleus to give the corresponding azobenzenes and azoxybenzenes by means of redox catalysts
BASF AKTIENGESELLSHCAFT10 citations73