P

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 patents
US5527946AJun 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 patents