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Kaspar Hallenberger
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Leverkusen, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Method for producing diaryl carbonates
Patent number
10,131,617
Issue date
Nov 20, 2018
Covestro Deutschland AG
Karl-Heinz Köhler
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for producing diaryl carbonates
Patent number
10,125,083
Issue date
Nov 13, 2018
Covestro Deutschland AG
Karl-Heinz Köhler
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Method for producing diaryl carbonate
Patent number
9,765,012
Issue date
Sep 19, 2017
Covestro Deutschland AG
Karl-Heinz Köhler
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing diaryl carbonates from dialkyl carbonates
Patent number
9,040,732
Issue date
May 26, 2015
Bayer MaterialScience AG
Andre Düx
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing diaryl carbonates or alkyl aryl carbonates fr...
Patent number
8,952,189
Issue date
Feb 10, 2015
Bayer MaterialScience AG
Andre Düx
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Processes for preparing diaryl and/or alkylaryl carbonates from dia...
Patent number
8,039,659
Issue date
Oct 18, 2011
Bayer MaterialScience AG
Andre Düx
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Processes for purifying diaryl carbonates
Patent number
8,022,240
Issue date
Sep 20, 2011
Bayer MaterialScience AG
Pieter Ooms
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of diaryl carbonates or arylalkyl carbo...
Patent number
8,003,817
Issue date
Aug 23, 2011
Bayer MaterialScience AG
Andre Düx
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing polycarbonate
Patent number
6,703,473
Issue date
Mar 9, 2004
Bayer Aktiengesellschaft
Uwe Hucks
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Preparation of triethyl phosphate
Patent number
6,673,955
Issue date
Jan 6, 2004
Bayer Aktiengesellschaft
Karl-Heinz Mitschke
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for reprocessing reaction mixtures containing diaryl carbonate
Patent number
6,605,191
Issue date
Aug 12, 2003
Bayer Aktiengesellschaft
Carsten Hesse
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for reprocessing reaction mixtures containing diaryl carbonate
Patent number
6,437,166
Issue date
Aug 20, 2002
Bayer Aktiengesellschaft
Carsten Hesse
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing phosphoric acid esters
Patent number
6,420,465
Issue date
Jul 16, 2002
Bayer Aktiengesellschaft
Nikolaus Janke
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for producing bis(4-hydroxyaryl)alkanes
Patent number
6,288,284
Issue date
Sep 11, 2001
Bayer Aktiengesellschaft
Rob Eek
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the purification of bisphenol
Patent number
5,785,823
Issue date
Jul 28, 1998
Bayer AG Konzernverwaltung RP
Kurt-Peter Meurer
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the purification of carbonic acid diaryl ester
Patent number
5,734,004
Issue date
Mar 31, 1998
Bayer Aktiengesellschaft
Steffen Kuhling
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for the preparation of ultra-pure bisphenol A and the use th...
Patent number
5,696,295
Issue date
Dec 9, 1997
Bayer AG
Claus Wulff
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Purification of alkyl nitrite-containing exhaust gases
Patent number
5,562,887
Issue date
Oct 8, 1996
Bayer Aktiengesellschaft
Heinz Landscheidt
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Process for preparing dimethyl carbonate
Patent number
5,523,452
Issue date
Jun 4, 1996
Bayer Aktiengesellschaft
Zoltan Kricsfalussy
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the isolation of pure dinitrotoluenes
Patent number
5,149,890
Issue date
Sep 22, 1992
Bayer Aktiengesellschaft
Gunther Rauchschwalbe
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
METHOD FOR PRODUCING DIARYL CARBONATES
Publication number
20170073299
Publication date
Mar 16, 2017
COVESTRO DEUTSCHLAND AG
Karl-Heinz Köhler
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
METHOD FOR PRODUCING DIARYL CARBONATES
Publication number
20170073300
Publication date
Mar 16, 2017
COVESTRO DEUTSCHLAND AG
Karl-Heinz Köhler
C07 - ORGANIC CHEMISTRY
Information
Patent Application
METHOD FOR PRODUCING DIARYL CARBONATE
Publication number
20160002143
Publication date
Jan 7, 2016
Bayer MaterialScience AG
Karl-Heinz KÖHLER
C07 - ORGANIC CHEMISTRY
Information
Patent Application
PROCESS FOR THE PREPARATION OF DIARYL CARBONATES OR ARYLALKYL CARBO...
Publication number
20110206568
Publication date
Aug 25, 2011
Bayer MaterialScience AG
Andre Düx
C07 - ORGANIC CHEMISTRY
Information
Patent Application
PROCESS FOR PREPARING DIARYL CARBONATES OR ALKYL ARYL CARBONATES FR...
Publication number
20100261928
Publication date
Oct 14, 2010
Bayer MaterialScience AG
Andre DÜX
C07 - ORGANIC CHEMISTRY
Information
Patent Application
PROCESSES FOR HYDROGEN CHLORIDE OXIDATION USING OXYGEN
Publication number
20100010256
Publication date
Jan 14, 2010
Bayer MaterialScience AG
Andreas Bulan
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Application
PROCESS FOR PREPARING DIARYL CARBONATES FROM DIALKYL CARBONATES
Publication number
20100010252
Publication date
Jan 14, 2010
Bayer MaterialScience AG
Andre Düx
C07 - ORGANIC CHEMISTRY
Information
Patent Application
PROCESSES FOR PURIFYING DIARYL CARBONATES
Publication number
20090137832
Publication date
May 28, 2009
Bayer MaterialScience AG
Pieter Ooms
C07 - ORGANIC CHEMISTRY
Information
Patent Application
PROCESSES FOR PREPARING DIARYL AND/OR ALKYLARYL CARBONATES FROM DIA...
Publication number
20090076293
Publication date
Mar 19, 2009
Bayer MaterialScience AG
Andre Dux
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Process For The Preparation Of Diaryl Carbonates Or Arylalkyl Carbo...
Publication number
20080293960
Publication date
Nov 27, 2008
Bayer MaterialScience AG
Andre Dux
C07 - ORGANIC CHEMISTRY
Information
Patent Application
DEVICES FOR COOLING GASES WHICH FORM A CORROSIVE CONDENSATION PRODU...
Publication number
20070289722
Publication date
Dec 20, 2007
Bayer Material Science AG
Helmut Diekmann
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Application
PROCESSES FOR HYDROGEN CHLORIDE OXIDATION USING OXYGEN
Publication number
20070274896
Publication date
Nov 29, 2007
Bayer Material Science AG
Andreas Bulan
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Application
Enhanced process for the purification of anhydrous hydrogen chlorid...
Publication number
20070261437
Publication date
Nov 15, 2007
Eric F. Boonstra
C01 - INORGANIC CHEMISTRY
Information
Patent Application
Preparation of triethyl phosphate
Publication number
20030100788
Publication date
May 29, 2003
Karl-Heinz Mitschke
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Process for the preparation and isolation of alkene oxides from alk...
Publication number
20030031624
Publication date
Feb 13, 2003
Gunter Schummer
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Process for producing polycarbonate
Publication number
20020095020
Publication date
Jul 18, 2002
Uwe Hucks
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
PROCESS FOR PREPARING PHOSPHORIC ACID ESTERS
Publication number
20020068835
Publication date
Jun 6, 2002
Nikolaus Janke
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Process for preparing fluorosulfonic acid having low contents of lo...
Publication number
20020001562
Publication date
Jan 3, 2002
Andreas Bulan
C01 - INORGANIC CHEMISTRY