Inventor
Tom Witzel
Inventor
Ludwigshafen, DE
Overview
Patents· 47 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds53%
C07DHeterocyclic compounds16%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry13%
Y02PClimate change mitigation technologies in the production or processing of goods7%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds6%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients3%
A01NPreservation of bodies of humans or animals or plants or parts thereof1%
PatentTitleYear
6,201,160'Preparation of alcohols'20016,166,207'Preparation of bicyclic amidines and diazacycloalkenes'20006,114,567'Preparation of aliphatic alpha, omega-aminonitriles'20006,022,999'Preparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamine having a cis/trans isomer ratio of at least 70:30'20006,018,074'Process for the preparation of polyalcohols'20006,013,803'Sterically hindered 4-amino-piperidine with a low dimer content, its production and use'20006,011,157'Process for purifying sterically hindered 4-amino piperidines'20005,917,080'Preparation of 2-cyano-3,3-diarylacrylic esters'19995,917,023'Reductive coupling of nitrobenzene or nitrobenzenes substituted on the nucleus to give the corresponding azobenzenes and azoxybenzenes by means of redox catalysts'19995,840,981'Process for producing N-methyl-2(3,4 dimethoxyphenyl)-ethylamine'19985,801,267'Preparation of aliphatic alpha, omega-aminonitriles'19985,801,268'Preparation of aliphatic alpha omega-aminonitriles'19985,756,808'Preparation of aliphatic, alpha omega-aminonitriles'19985,756,845'Preparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamine'19985,756,839'Process for preparing D,L-aspartic acid from ammonium salts of the maleic acid'19985,739,324'Preparation of caprolactam'19985,728,317'Polyisocyanate compositions having a long shelf life and obtainable by phosgene-free methods, their preparation and their use'19985,717,090'Simultaneous preparation of caprolactam and hexamethylenediamine'19985,705,699'Preparation of 3-aminomethyl-3,5,5-trimethylcyclohexylamine'19985,696,048'Cobalt catalysts'19975,684,201'Preparation of aliphatic and cycloaliphatic oximes'19975,679,855'Preparation of benzophenone imines'19975,663,444'Preparation of a pure dialkylaminoethanol stable against discoloration'19975,646,277'Preparation of caoprolactam'19975,576,449'Preparation of 2-substituted but-2-ene-1,4-dial-4-acetals and novel hemiacetals of glyoxal monoacetals'19965,565,583'Preparation of 2-substituted but-2-ene-1, 4-dial-4-acetals and novel hemiacetals of glyoxal monoacetals'19965,557,011'Preparation of diamines'19965,554,787'2,2-dialkylpentane 1,5-diisocyanates, 2,2-dialkylpentane 1,5-diurethanes and 2,2-dialkylpentane 1,5-dicarbamoyl chlorides, and their preparation and use'19965,536,691'Cobalt catalysts and a process required for their preparation'19965,527,946'Preparation of aliphatic alpha, omega-aminonitriles'19965,516,928'Preparaion of 3.cyano-3,5,5-trimethylcyclohexanone'19965,502,185'Preparation of lactams'19965,495,014'Preparation of caprolactam'19965,489,663'Preparation of polyisocyanates containing isocyanurate groups and use thereof'19965,481,037'Decontamination of tertiary amines from primary and secondary amines'19965,463,130'Preparation of peralkylated amines'19955,434,291'Preparation of aminopropionitriles'19955,371,292'Preparation of 3-aminomethyl-3,5,5-trimethyl-cyclohexylamine'19945,347,033'Preparation of 5-cyanovaleramide'19945,344,983'Selective preparation of linear pentane-1,5-diamines in increased yields'19945,334,745'Preparation of 3-aminopropionitriles'19945,239,120'Preparation of 2-(3-aminopropyl)-cycloalkylamines'19935,202,465'Preparation of 2-methylenepropane-1,3-diol dicarboxylates'19935,166,443'Preparation of 2,2-disubstituted pentane-1,5-diamines'19925,166,447'Preparation of cyclopentanones'19925,118,864'Preparation of cyclopentenones'19924,999,453'Preparation of olefinically unsaturated carboxylic esters having a terminal ester group'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–2001Patents assigned to BASF AG (45)· patent assignee history
1991–2001Based in Ludwigshafen, DE· patent location history
1996Based in Ludwigshafn, DE· patent location history
1999–2000Patents assigned to BASF AKTIENGESELLSHCAFT (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BASF AG | 45 | 1991–2001 |
| BASF AKTIENGESELLSHCAFT | 2 | 1999–2000 |
Locations
| Location | Patents | Span |
|---|---|---|
| Ludwigshafen, DE | 46 | 1991–2001 |
| Ludwigshafn, DE | 1 | 1996 |