Inventor · disambiguated record
Tom Witzel
Also filed as: WITZEL TOM
47 granted patents·555 citations·filing 1989–1998
98Inventor score
Top patents by PatentIndex Score
47 records- 0190US5489663APreparation of polyisocyanates containing isocyanurate groups and use thereofBASF AG·Filed 1994·Granted Feb 6, 1996·50 cites·22 claims
- 0287US5696048ACobalt catalystsBASF AG·Filed 1996·Granted Dec 9, 1997·32 cites·9 claims
- 0386US6201160B1Preparation of alcoholsBASF AG·Filed 1995·Granted Mar 13, 2001·34 cites·20 claims
- 0486US5536691ACobalt catalysts and a process required for their preparationBASF AG·Filed 1994·Granted Jul 16, 1996·27 cites·9 claims
- 0585US5371292APreparation of 3-aminomethyl-3,5,5-trimethyl-cyclohexylamineBASF AG·Filed 1993·Granted Dec 6, 1994·24 cites·19 claims
- 0684US5663444APreparation of a pure dialkylaminoethanol stable against discolorationBASF AG·Filed 1995·Granted Sep 2, 1997·32 cites·15 claims
- 0783US5646277APreparation of caoprolactamBASF AG·Filed 1994·Granted Jul 8, 1997·19 cites·5 claims
- 0882US6022999APreparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamine having a cis/trans isomer ratio of at least 70:30BASF AG·Filed 1998·Granted Feb 8, 2000·22 cites·7 claims
- 0982US5756845APreparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamineBASF AG·Filed 1996·Granted May 26, 1998·23 cites·10 claims
- 1080US5463130APreparation of peralkylated aminesBASF AG·Filed 1995·Granted Oct 31, 1995·23 cites·9 claims
- 1179US6018074AProcess for the preparation of polyalcoholsBASF AKTIENGESELLSHCAFT·Filed 1996·Granted Jan 25, 2000·20 cites·14 claims
- 1279US5739324APreparation of caprolactamBASF AG·Filed 1994·Granted Apr 14, 1998·15 cites·6 claims
- 1378US5527946APreparation of aliphatic alpha, omega-aminonitrilesBASF AG·Filed 1995·Granted Jun 18, 1996·41 cites·8 claims
- 1476US5495014APreparation of caprolactamBASF AG·Filed 1994·Granted Feb 27, 1996·15 cites·6 claims
- 1572US5557011APreparation of diaminesBASF AG·Filed 1994·Granted Sep 17, 1996·12 cites·10 claims
- 1670US5717090ASimultaneous preparation of caprolactam and hexamethylenediamineBASF AG·Filed 1995·Granted Feb 10, 1998·15 cites·9 claims
- 1769US5728317APolyisocyanate compositions having a long shelf life and obtainable by phosgene-free methods, their preparation and their useBASF AG·Filed 1996·Granted Mar 17, 1998·23 cites·24 claims
- 1867US5917023AReductive coupling of nitrobenzene or nitrobenzenes substituted on the nucleus to give the corresponding azobenzenes and azoxybenzenes by means of redox catalystsBASF AKTIENGESELLSHCAFT·Filed 1997·Granted Jun 29, 1999·10 cites·10 claims
- 1966US5239120APreparation of 2-(3-aminopropyl)-cycloalkylaminesBASF AG·Filed 1991·Granted Aug 24, 1993·9 cites·20 claims
- 2065US5840981AProcess for producing N-methyl-2(3,4 dimethoxyphenyl)-ethylamineBASF AG·Filed 1996·Granted Nov 24, 1998·9 cites·10 claims
- 2164US5166443APreparation of 2,2-disubstituted pentane-1,5-diaminesBASF AG·Filed 1991·Granted Nov 24, 1992·8 cites·16 claims
- 2261US5481037ADecontamination of tertiary amines from primary and secondary aminesBASF AG·Filed 1994·Granted Jan 2, 1996·7 cites·15 claims
- 2360US5684201APreparation of aliphatic and cycloaliphatic oximesBASF AG·Filed 1995·Granted Nov 4, 1997·7 cites·6 claims
- 2459US6166207APreparation of bicyclic amidines and diazacycloalkenesBASF AG·Filed 1998·Granted Dec 26, 2000·7 cites·8 claims
- 2559US5576449APreparation of 2-substituted but-2-ene-1,4-dial-4-acetals and novel hemiacetals of glyoxal monoacetalsBASF AG·Filed 1994·Granted Nov 19, 1996·5 cites·5 claims
- 2657US5917080APreparation of 2-cyano-3,3-diarylacrylic estersBASF AG·Filed 1996·Granted Jun 29, 1999·6 cites·8 claims
- 2755US5705699APreparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamineBASF AG·Filed 1995·Granted Jan 6, 1998·5 cites·7 claims
- 2854US5565583APreparation of 2-substituted but-2-ene-1, 4-dial-4-acetals and novel hemiacetals of glyoxal monoacetalsBASF AG·Filed 1995·Granted Oct 15, 1996·4 cites·1 claims
- 2952US5434291APreparation of aminopropionitrilesBASF AG·Filed 1994·Granted Jul 18, 1995·4 cites·12 claims
- 3051US5679855APreparation of benzophenone iminesBASF AG·Filed 1995·Granted Oct 21, 1997·4 cites·14 claims
- 3150US5516928APreparaion of 3.cyano-3,5,5-trimethylcyclohexanoneBASF AG·Filed 1995·Granted May 14, 1996·4 cites·6 claims
- 3250US5334745APreparation of 3-aminopropionitrilesBASF AG·Filed 1993·Granted Aug 2, 1994·4 cites·7 claims
- 3346US6114567APreparation of aliphatic alpha, omega-aminonitrilesBASF AG·Filed 1998·Granted Sep 5, 2000·9 cites·1 claims
- 3444US5756808APreparation of aliphatic, alpha omega-aminonitrilesBASF AG·Filed 1996·Granted May 26, 1998·7 cites·1 claims
- 3542US5554787A2,2-dialkylpentane 1,5-diisocyanates, 2,2-dialkylpentane 1,5-diurethanes and 2,2-dialkylpentane 1,5-dicarbamoyl chlorides, and their preparation and useBASF AG·Filed 1995·Granted Sep 10, 1996·2 cites·1 claims
- 3641US5502185APreparation of lactamsBASF AG·Filed 1994·Granted Mar 26, 1996·4 cites·5 claims
- 3739US5347033APreparation of 5-cyanovaleramideBASF AG·Filed 1993·Granted Sep 13, 1994·1 cites·8 claims
- 3838US6011157AProcess for purifying sterically hindered 4-amino piperidinesBASF AG·Filed 1997·Granted Jan 4, 2000·1 cites·4 claims
- 3937US5118864APreparation of cyclopentenonesBASF AG·Filed 1991·Granted Jun 2, 1992·3 cites·14 claims
- 4037US4999453APreparation of olefinically unsaturated carboxylic esters having a terminal ester groupBASF AG·Filed 1989·Granted Mar 12, 1991·3 cites·8 claims
- 4136US5344983ASelective preparation of linear pentane-1,5-diamines in increased yieldsBASF AG·Filed 1992·Granted Sep 6, 1994·1 cites·7 claims
- 4235US5801268APreparation of aliphatic alpha omega-aminonitrilesBASF AG·Filed 1997·Granted Sep 1, 1998·2 cites·1 claims
- 4335US5756839AProcess for preparing D,L-aspartic acid from ammonium salts of the maleic acidBASF AG·Filed 1995·Granted May 26, 1998·1 cites·7 claims
- 4431US6013803ASterically hindered 4-amino-piperidine with a low dimer content, its production and useBASF AG·Filed 1997·Granted Jan 11, 2000·1 cites·7 claims
- 4531US5801267APreparation of aliphatic alpha, omega-aminonitrilesBASF AG·Filed 1997·Granted Sep 1, 1998·0 cites·1 claims
- 4631US5166447APreparation of cyclopentanonesBASF AG·Filed 1991·Granted Nov 24, 1992·0 cites·17 claims
- 4729US5202465APreparation of 2-methylenepropane-1,3-diol dicarboxylatesBASF AG·Filed 1992·Granted Apr 13, 1993·0 cites·5 claims
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