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Andreas Seidel
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Cologne, DE
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last 30 patents
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Patent Grant
Process for the removal of aldehydes and acetals from industrially...
Patent number
5,620,567
Issue date
Apr 15, 1997
Hoechst Aktiengesellschaft
Andreas Seidel
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing tert.-butyl chloroacetate
Patent number
5,591,888
Issue date
Jan 7, 1997
Hoechst AG.
Andreas Seidel
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Preparation of methyltris(m-sulfonatophenyl) phosphonium iodide tri...
Patent number
5,403,954
Issue date
Apr 4, 1995
Hoechst Aktiengesellschaft
Peter Heymanns
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the stabilization of ethanolic ethylmagnesium carbonate...
Patent number
5,326,897
Issue date
Jul 5, 1994
Hoechst Aktiengesellschaft
Erhard Jagers
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the purification of waste acetic acid
Patent number
5,306,398
Issue date
Apr 26, 1994
Hoechst Aktiengesellschaft
Andreas Seidel
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for removing metallic corrosion products from carbonylation...
Patent number
5,124,290
Issue date
Jun 23, 1992
Hoechst Aktiengesellschaft
Heinz Erpenbach
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for removing metallic corrosion products from a contaminate...
Patent number
4,985,383
Issue date
Jan 15, 1991
Hoechst Aktiengesellschaft
Heinz Erpenbach
C07 - ORGANIC CHEMISTRY