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Siegfried Billenstein
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D-6230 Frankfurt am Main 80, DE
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last 30 patents
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Patent Grant
Process for the purification of alkylene oxide adducts
Patent number
5,012,013
Issue date
Apr 30, 1991
Ignaz Wimmer
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Poly(alkoxy ether) mixed formals
Patent number
4,992,595
Issue date
Feb 12, 1991
Hoechst Aktiengesellschaft
Rolf Kleber
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the preparation of fatty acid esters of short-chain alc...
Patent number
4,668,439
Issue date
May 26, 1987
Hoechst Aktiengesellschaft
Siegfried Billenstein
C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information
Patent Grant
Quaternary N-alkyl-N,N',N'-polyoxyalkyl-.alpha.,.omega.-diamino-alk...
Patent number
4,515,723
Issue date
May 7, 1985
Hoechst Aktiengesellschaft
Siegfried Billenstein
C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information
Patent Grant
Petroleum emulsion-breakers containing nitrogen, and their use
Patent number
4,474,682
Issue date
Oct 2, 1984
Hoechst Aktiengesellschaft
Siegfried Billenstein
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Modified etherified phenol/aldehyde condensation products and their...
Patent number
4,465,817
Issue date
Aug 14, 1984
Hoechst Aktiengesellschaft
Siegfried Billenstein
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Textile softener
Patent number
4,439,331
Issue date
Mar 27, 1984
Hoechst Aktiengesellschaft
Siegfried Billenstein
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Surface-active compounds, a process for their preparation and their...
Patent number
4,431,565
Issue date
Feb 14, 1984
Hoechst Aktiengesellschaft
Siegfried Billenstein
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Fabric softener concentrate
Patent number
4,351,737
Issue date
Sep 28, 1982
Hoechst Aktiengesellschaft
Siegfried Billenstein
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Use of alkylpolyglycol-tert.-butyl ether as bleaching auxiliary and...
Patent number
4,321,052
Issue date
Mar 23, 1982
Hoechst Aktiengesellschaft
Otto Smerz
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Alkyl-polyglycol mixed formals as fiber preparation agents
Patent number
4,294,990
Issue date
Oct 13, 1981
Hoechst Aktiengesellschaft
Rolf Kleber
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Dyestuff compositions containing acylated alkoxylates of polyhydric...
Patent number
4,286,960
Issue date
Sep 1, 1981
Hoechst Aktiengesellschaft
Manfred Schneider
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Tertiary butyl ethers as fiber preparation agents
Patent number
4,261,839
Issue date
Apr 14, 1981
Hoechst Aktiengesellschaft
Rolf Kleber
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Process for the manufacture of fatty acid nitriles and glycerol fro...
Patent number
4,234,509
Issue date
Nov 18, 1980
Hoechst Aktiengesellschaft
Siegfried Billenstein
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Fluorine-containing alkyl-sulfato-betaines and processes for their...
Patent number
4,209,456
Issue date
Jun 24, 1980
Hoechst Aktiengesellschaft
Siegfried Billenstein
C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information
Patent Grant
Ampholytic, fluorine-containing esters of phosphorous acid
Patent number
4,147,743
Issue date
Apr 3, 1979
Hoechst Aktiengesellschaft
Heinrich Bathelt
C07 - ORGANIC CHEMISTRY