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Christoph Naumann
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Niedernhausen, DE
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last 30 patents
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Patent Grant
Imidobisphosphoric acids, and use thereof
Patent number
5,935,947
Issue date
Aug 10, 1999
Hoechst Aktiengesellschaft
Christoph Naumann
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for preparing aromatic amines
Patent number
5,744,643
Issue date
Apr 28, 1998
Hoechst Aktiengesellschaft
Matthias Beller
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Phosphepinium salts
Patent number
5,741,931
Issue date
Apr 21, 1998
Hoechst AG
Christoph Naumann
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Imidobisphosphoric acids, and use therefor
Patent number
5,733,897
Issue date
Mar 31, 1998
Hoechst Aktiengesellschaft
Christoph Naumann
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Compounds of the phosphine group, their preparation and their use
Patent number
5,728,886
Issue date
Mar 17, 1998
Hoechst AG
Christoph Naumann
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Diphosphines and process for their preparation
Patent number
5,696,296
Issue date
Dec 9, 1997
Hoechst Aktiengesellschaft
Christoph Naumann
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Sulfonated diphosphines and a process for their preparation
Patent number
5,684,182
Issue date
Nov 4, 1997
Hoechst Aktiengesellschaft
Christoph Naumann
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Guanidinealkyl-1,1-bisphosphonic acid derivatives, process for thei...
Patent number
5,661,174
Issue date
Aug 26, 1997
Hoechst Aktiengesellschaft
Christoph Naumann
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Guanidinealkyl-1,1-bisphosphonic acid derivatives process for their...
Patent number
5,498,617
Issue date
Mar 12, 1996
Hoechst Aktiengesellschaft
Christoph Naumann
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Guanidinealkyl-1,1-bisphosphonic acid derivatives, process for thei...
Patent number
5,395,826
Issue date
Mar 7, 1995
Hoechst Aktiengesellschaft
Christoph Naumann
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
N-cycloalkylaminoethane-1,1-bis (phosphonic acid) useful for the tr...
Patent number
5,364,846
Issue date
Nov 15, 1994
Hoechst Aktiengesellschaft
Hans Lang
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Alkenylaminoalkane-1,1-diphosphonic acid derivatives and copolymers...
Patent number
5,302,677
Issue date
Apr 12, 1994
Hoechst Aktiengesellschaft
Matthias Krull
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Guanidinoalkyl-1,1-bisphosphonic acid derivatives, process for thei...
Patent number
5,294,608
Issue date
Mar 15, 1994
Hoechst Aktiengesellschaft
Hans-Jochen Lang
C07 - ORGANIC CHEMISTRY