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Michael Meier
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Frankfurt, DE
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last 30 patents
Information
Patent Grant
Process for the preparation of 3-(N-Aryl-amino)-propyl-2'-sulfato-e...
Patent number
5,777,111
Issue date
Jul 7, 1998
Hoechst Aktiengesellschaft
Christian Schumacher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 3-hydroxy-N-benzimidazolon-5-yl-2-na...
Patent number
5,756,757
Issue date
May 26, 1998
Hoechst Aktiengesellschaft
Michael Meier
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Liquid formulation of N-(2-sulfatoethyl)piperazine sulfate
Patent number
5,695,529
Issue date
Dec 9, 1997
Hoechst Aktiengesellschaft
Andreas Schrell
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Process for the preparation of 3-(N-aryl-amino)-propyl-2'-sulfatoet...
Patent number
5,672,738
Issue date
Sep 30, 1997
Hoechst Aktiengesellschaft
Christian Schumacher
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of N-(2-sulfatoethyl)-piperazine in hig...
Patent number
5,596,099
Issue date
Jan 21, 1997
Hoechst Aktiengesellschaft
Michael Meier
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
N-(2-sulfatoethyl)piperazine sulfate and its preparation
Patent number
5,563,271
Issue date
Oct 8, 1996
Hoechst AG
Michael Meier
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing 3-chloroanthranilic alkyl esters of high puri...
Patent number
5,557,005
Issue date
Sep 17, 1996
Hoechst Aktiengesellschaft
G unther Semler
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of aromatic carboxamides from aromatic...
Patent number
5,550,286
Issue date
Aug 27, 1996
Hoechst AG
Yani Christidis
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Di(3-(2-chloroethylsulfonyl)-1-propyl)amine hydrochloride and a pro...
Patent number
5,446,201
Issue date
Aug 29, 1995
Hoechst AG
Heinrich Angenendt
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 3-nitrobenzenesulfonyl chloride
Patent number
5,436,370
Issue date
Jul 25, 1995
Hoechst AG
Michael Meier
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 3'-aminopropyl 2-sulfatoethyl sulfone
Patent number
5,416,234
Issue date
May 16, 1995
Hoechst Aktiengesellschaft
Michael Meier
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Polyarylene ethers containing xanthone units, a process for their p...
Patent number
5,395,914
Issue date
Mar 7, 1995
Hoechst Aktiengesellschaft
Peter Wilharm
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing 3-sulfobenzoic acid and alkali metal salts th...
Patent number
5,387,711
Issue date
Feb 7, 1995
Hoechst AG
Michael Meier
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing alkali metal 3-sulfobenzoates
Patent number
5,371,281
Issue date
Dec 6, 1994
Hoechst AG
Michael Meier
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 2-nitro-3, 6-dichlorophenol
Patent number
5,292,966
Issue date
Mar 8, 1994
Hoechst Aktiengesellschaft
Michael Meier
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 3'-aminopropyl 2-sulfatoethyl sulfone
Patent number
5,281,740
Issue date
Jan 25, 1994
Hoechst Aktiengesellschaft
Michael Meier
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
N-acylaminoalkyl 2-hydroxyethyl sulfides and a process for their pr...
Patent number
5,278,341
Issue date
Jan 11, 1994
Hoechst Aktiengesellschaft
Michael Meier
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of 3'-aminopropyl 2-chloroethyl sulfone...
Patent number
5,227,527
Issue date
Jul 13, 1993
Hoechst Aktiengesellschaft
Heinrich Angenendt
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of aromatic sulfonyl chlorides
Patent number
5,136,043
Issue date
Aug 4, 1992
Hoechst Aktiengesellschaft
Michael Meier
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing phenethanol ethers by the reduction of corres...
Patent number
5,124,489
Issue date
Jun 23, 1992
Hoechst Celanese Corporation
John R. Durrwachter
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of benzimidazolones
Patent number
5,003,079
Issue date
Mar 26, 1991
Hoechst Aktiengesellschaft
Michael Meier
C07 - ORGANIC CHEMISTRY