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Gunter Billen
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Niedernhausen, DE
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last 30 patents
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Patent Grant
Substituted diaminocarboxylic acids
Patent number
6,355,673
Issue date
Mar 12, 2002
Aventis Pharma Deutschland GmbH
Werner Thorwart
C07 - ORGANIC CHEMISTRY
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Patent Grant
Substituted diaminocarboxylic acids
Patent number
6,159,995
Issue date
Dec 12, 2000
Aventis Pharma Deutschland GmbH
Werner Thorwart
C07 - ORGANIC CHEMISTRY
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Patent Grant
Alkylxanthine phosphonates and alkylxanthine phosphine oxides and t...
Patent number
5,728,686
Issue date
Mar 17, 1998
Hoechst Aktiengesellschaft
Gunter Billen
C07 - ORGANIC CHEMISTRY