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Joachim Zechlin
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Dusseldorf, DE
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Patents Grants
last 30 patents
Information
Patent Grant
Process for quenching a gaseous reaction mixture obtained in the ga...
Patent number
10,975,020
Issue date
Apr 13, 2021
Covestro Deutschland AG
Yuguo Gai
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for producing isocyanates in the gas phase
Patent number
10,836,713
Issue date
Nov 17, 2020
Covestro Deutschland AG
Joachim Zechlin
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for producing isocyanates
Patent number
10,435,353
Issue date
Oct 8, 2019
Covestro Deutschland AG
Joachim Zechlin
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the production of toluene diisocyanate
Patent number
8,030,522
Issue date
Oct 4, 2011
Bayer MaterialScience LLC
Joachim Zechlin
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the production of Raney nickel catalysts and their use...
Patent number
7,517,829
Issue date
Apr 14, 2009
Bayer MaterialScience AG
Joachim Zechlin
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing 5-nitro-3,4-dihydro-1(H)-naphthalinone, 1,5-n...
Patent number
7,202,378
Issue date
Apr 10, 2007
Bayer MaterialScience AG
Joachim Zechlin
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing 5-nitro-3,4-dihydro-1(2H)-naphthalinone, 1,5-...
Patent number
7,202,384
Issue date
Apr 10, 2007
Bayer Materialscience Aktiengesellschaft
Joachim Zechlin
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing 5-nitro-3,4-dihydro-1(2H)-naphthalinone, 1-5-...
Patent number
7,057,071
Issue date
Jun 6, 2006
Bayer MaterialScience AG
Joachim Zechlin
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the production of 1,5-naphthalenediamine
Patent number
6,706,924
Issue date
Mar 16, 2004
Bayer Aktiengesellschaft
Michael Schelhaas
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing 1,4-diaminonaphthalene and/or 1,5-diaminoNaph...
Patent number
6,538,158
Issue date
Mar 25, 2003
Bayer Aktiengesellschaft
Joachim Zechlin
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
DRYING APPARATUS AND USE THEREOF AND PROCESS FOR PRODUCING AN ISOCY...
Publication number
20220187018
Publication date
Jun 16, 2022
Covestro Intellectual Property GmbH & Co. KG
Joachim Zechlin
F26 - DRYING
Information
Patent Application
PROCESS FOR QUENCHING A GASEOUS REACTION MIXTURE OBTAINED IN THE GA...
Publication number
20200361857
Publication date
Nov 19, 2020
COVESTRO DEUTSCHLAND AG
Yuguo Gai
C07 - ORGANIC CHEMISTRY
Information
Patent Application
METHOD FOR PRODUCING ISOCYANATES IN THE GAS PHASE
Publication number
20200190021
Publication date
Jun 18, 2020
COVESTRO DEUTSCHLAND AG
Joachim ZECHLIN
C07 - ORGANIC CHEMISTRY
Information
Patent Application
METHOD FOR PRODUCING ISOCYANATES
Publication number
20180370907
Publication date
Dec 27, 2018
COVESTRO DEUTSCHLAND AG
Joachim Zechlin
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Process for the production of toluene diisocyanate
Publication number
20070287857
Publication date
Dec 13, 2007
Joachim Zechlin
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Process for producing 5-nitro-3,4-dihydro-1(H)-naphthalinone, 1,5-n...
Publication number
20060183946
Publication date
Aug 17, 2006
Joachim Zechlin
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Process for producing 5-nitro-3,4-dihydro-1(2H)-naphthalinone, 1,5-...
Publication number
20060178526
Publication date
Aug 10, 2006
Joachim Zechlin
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Process for the production of Raney nickel catalysts and their use...
Publication number
20050107251
Publication date
May 19, 2005
Joachim Zechlin
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Process for producing 5-nitro-3,4-dihydro-1(2H)-naphthalinone, 1-5-...
Publication number
20030229252
Publication date
Dec 11, 2003
Joachim Zechlin
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Process for preparing 1,4-diaminonaphthalene and/or 1,5-diaminonaph...
Publication number
20020198408
Publication date
Dec 26, 2002
Joachim Zechlin
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Polyurethane prepolymers and polyurethane elastomers based on 1,4-n...
Publication number
20020123594
Publication date
Sep 5, 2002
Andreas Hoffmann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Process for the production of 1,5-naphthalenediamine
Publication number
20020103401
Publication date
Aug 1, 2002
Michael Schelhaas
C07 - ORGANIC CHEMISTRY