Inventor · disambiguated record
Alexander Klausener
Also filed as: KLAUSENER ALEXANDER · KLAUSENER ALEXANDER G M
100 granted patents·26 pending applications·1,009 citations·filing 1986–2025
99Inventor score
Files withBAYER AG82PI INDUSTRIES LTD29WOLFF WALSRODE AG4BAYER CROPSCIENCE AG2BAYER AKITNEGESELLSCHAFT1
Top patents by PatentIndex Score
126 records- 0197US5231212AProcess for the continuous preparation of dialkyl carbonatesBAYER AG·Filed 1992·Granted Jul 27, 1993·93 cites·13 claims
- 0294US5120734AFungicidal pyrid-2-yl-amino acetic acid estersBAYER AG·Filed 1990·Granted Jun 9, 1992·50 cites·3 claims
- 0393US5218135AProcess for the preparation of dialkyl carbonatesBAYER AG·Filed 1992·Granted Jun 8, 1993·57 cites·10 claims
- 0492US5359118AProcess for the continuous preparation of dialkyl carbonatesBAYER AG·Filed 1993·Granted Oct 25, 1994·104 cites·17 claims
- 0589US5484903AProcess for the production of polysaccharide carbonatesWOLFF WALSRODE AG·Filed 1992·Granted Jan 16, 1996·50 cites·3 claims
- 0689US5068321ACarbonic acid esters of polysaccharides and a process for their productionWOLFF WALSRODE AG·Filed 1989·Granted Nov 26, 1991·48 cites·11 claims
- 0785US5231097APyrimidyl-substituted acrylic estersBAYER AG·Filed 1991·Granted Jul 27, 1993·31 cites·6 claims
- 0884US6441254B1Process for preparing trimethylol compounds and formic acidBAYER AG·Filed 2001·Granted Aug 27, 2002·15 cites·12 claims
- 0984US5498744AProcess for the preparation of dimethyl carbonateBAYER AG·Filed 1994·Granted Mar 12, 1996·31 cites·21 claims
- 1084US5391767AProcess for the preparation of alkylene carbonatesBAYER AG·Filed 1992·Granted Feb 21, 1995·28 cites·19 claims
- 1183US5412147AProcess for the continuous preparation of alkyl nitritesBAYER AG·Filed 1993·Granted May 2, 1995·20 cites·17 claims
- 1281US5681957AProcess for the preparation of substituted 2-fluoro-pyrimidinesBAYER AG·Filed 1996·Granted Oct 28, 1997·27 cites·10 claims
- 1381US5455368AProcess for separating off methanol from a mixture of dimethyl carbonate and methanolBAYER AG·Filed 1994·Granted Oct 3, 1995·19 cites·10 claims
- 1481US5235087AProcess for the preparation of dialkyl carbonatesBAYER AG·Filed 1991·Granted Aug 10, 1993·21 cites·20 claims
- 1581US4966974A2-phenylsulphinyl-nitro-pyridines, and their use as fungicidesBAYER AG·Filed 1989·Granted Oct 30, 1990·15 cites·3 claims
- 1677US7598389B2Silylated carboxamidesBAYER CROPSCIENCE AG·Filed 2004·Granted Oct 6, 2009·9 cites·15 claims
- 1776US6750354B2Process for the alkylation of 3,4-dihydroxythiophene-2,5-dicarboxylic estersBAYER AG·Filed 2002·Granted Jun 15, 2004·8 cites·15 claims
- 1876US5649322AProcess for the preparation of C1 -C4 -alkyl nitritesBAYER AG·Filed 1995·Granted Jul 15, 1997·17 cites·19 claims
- 1976US5543548AProcess for the preparation of dimethyl carbonateBAYER AG·Filed 1994·Granted Aug 6, 1996·15 cites·21 claims
- 2076US5274163AProcess for the preparation of dialkyl carbonatesBAYER AG·Filed 1993·Granted Dec 28, 1993·14 cites·20 claims
- 2176US5250533AFungicidal pyridinylpyrimidinesBAYER AG·Filed 1992·Granted Oct 5, 1993·22 cites·18 claims
- 2275US5552130AProcess for the continuous preparation of nitrosyl chlorideBAYER AG·Filed 1995·Granted Sep 3, 1996·35 cites·5 claims
- 2374US5478960AProcess for the preparation of heterosubstituted acetalsBAYER AG·Filed 1995·Granted Dec 26, 1995·18 cites·10 claims
- 2473US6525198B1Method for producing 4,6-dichloropyrimidine with sulfur compounds and phosphorus compoundsBAYER AG·Filed 2000·Granted Feb 25, 2003·5 cites·10 claims
- 2573US6465678B1Method for preparing methyl carbazateBAYER AG·Filed 2000·Granted Oct 15, 2002·7 cites·21 claims
- 2673US6441171B1Method for the production of 4,6-dichloropyrimidine with the aid of phosgeneBAYER AG·Filed 2000·Granted Aug 27, 2002·5 cites·8 claims
- 2769US5008275APesticidal pyridyl-substituted acrylic ester compoundsBAYER AG·Filed 1990·Granted Apr 16, 1991·10 cites·13 claims
- 2868US6825357B2Benzodioxinothiophenes, their preparation and useBAYER AG·Filed 2002·Granted Nov 30, 2004·7 cites·16 claims
- 2968US5182286APesticidal substituted 2-(6-(pyrimidinyl)-indol-1-yl)-acrylic estersBAYER AG·Filed 1991·Granted Jan 26, 1993·9 cites·8 claims
- 3067US5756824AProcess for the preparation of carbazatesBAYER AG·Filed 1996·Granted May 26, 1998·10 cites·10 claims
- 3165US5114959AFungicidal substituted acrylic estersBAYER AG·Filed 1990·Granted May 19, 1992·13 cites·10 claims
- 3264US6562970B1Method for producing 4-chloro-6-hydroxypyrimidineBAYER AG·Filed 2000·Granted May 13, 2003·2 cites·10 claims
- 3364US6100433AProcess for preparing 3-methoxy-1-propanolBAYER AG·Filed 1999·Granted Aug 8, 2000·8 cites·12 claims
- 3463US5262416APesticidal substituted 2-[6-(pyrimidinyl)-indol-1-yl]-acrylic estersBAYER AG·Filed 1992·Granted Nov 16, 1993·8 cites·8 claims
- 3563US4968709AFungicidal 2-thiazolyloxy-thio- or amino-3-substituted acrylic acid estersBAYER AG·Filed 1989·Granted Nov 6, 1990·5 cites·13 claims
- 3662US6465658B2Process for the preparation of N,N′-carbonyldiazoles and azolide saltsBAYER AG·Filed 2001·Granted Oct 15, 2002·2 cites·8 claims
- 3762US6441170B1Method of producing 4,6-dichloropyrimidine with acid chloridesBAYER AKITNEGESELLSCHAFT·Filed 2000·Granted Aug 27, 2002·3 cites·6 claims
- 3862US6198007B1Process for the preparation of 1-substituted 2,4-dinitrobenzenesBAYER AG·Filed 2000·Granted Mar 6, 2001·3 cites·19 claims
- 3962US5545754AProcess for the preparation of p-amino-phenolsBAYER AG·Filed 1991·Granted Aug 13, 1996·7 cites·1 claims
- 4062US4868198A3-halogenoalkyl-1-aryl-pyrazole pesticides, compositions and useBAYER AG·Filed 1988·Granted Sep 19, 1989·5 cites·7 claims
- 4161US5463034APolysaccharides, process for their preparation and their useWOLFF WALSRODE AG·Filed 1989·Granted Oct 31, 1995·12 cites·5 claims
- 4261US5137898AFungicidal and insecticidal substituted-heterocyclyl-acrylic estersBAYER AG·Filed 1990·Granted Aug 11, 1992·9 cites·12 claims
- 4361US2025368602A1Process for preparing cyano substituted anthranilic diamides and intermediates thereofPI INDUSTRIES LTD·Filed 2025·Application pending·0 cites
- 4460US5462943ASubstituted acetic acid esters useful as pesticides per se and as intermediates for substitued acrylic esters pesticidesBAYER AG·Filed 1993·Granted Oct 31, 1995·9 cites·9 claims
- 4559US6822095B1Method for producing 4,6-dichloropyrimidineBAYER AG·Filed 2000·Granted Nov 23, 2004·1 cites·9 claims
- 4659US2025129031A11,2,3-triazole carbonyl sulfonylamide compounds and use thereofPI INDUSTRIES LTD·Filed 2023·Application pending·0 cites
- 4758US7074941B2Process for preparing 2-alkyl-3-aryl- and -heteroaryloxaziridines and novel 2-alkyl-3-aryloxaziridinesBAYER AG·Filed 2004·Granted Jul 11, 2006·1 cites·2 claims
- 4858US5288894AProcess for the preparation of dialkyl carbonatesBAYER AG·Filed 1992·Granted Feb 22, 1994·6 cites·18 claims
- 4958US5189063APesticidal substituted acrylic estersBAYER AG·Filed 1990·Granted Feb 23, 1993·6 cites·11 claims
- 5057US5856516AProcess for the preparation of carbazoleBAYER AG·Filed 1997·Granted Jan 5, 1999·6 cites·20 claims
Showing the top 50 of 126 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Alexander Klausener files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →