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Friedrich Staiss
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Wiesbaden, DE
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last 30 patents
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Patent Grant
Process for separation of petroleum emulsions of the water-in-oil type
Patent number
5,385,674
Issue date
Jan 31, 1995
Hoechst Aktiengesellschaft
Rainer Kupfer
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information
Patent Grant
Esterified glycidyl ether addition products and their use
Patent number
5,114,616
Issue date
May 19, 1992
Hoechst Aktiengesellschaft
Rainer Kupfer
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for the separation of crude oil emulsions of the water-in-o...
Patent number
5,039,450
Issue date
Aug 13, 1991
Hoechst Aktiengesellschaft
Rainer Kupfer
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Branched polyoxyalkylene copolyesters, a process for their preparat...
Patent number
4,885,110
Issue date
Dec 5, 1989
Hoechst Aktiengesellschaft
Willibald Bose
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Branched, quaternary polyoxyalkylene copolyesters, a process for th...
Patent number
4,885,111
Issue date
Dec 5, 1989
Hoechst Aktiengesellschaft
Wllibald Bose
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Oxalkylated polyester-amines, a process for their preparation and t...
Patent number
4,734,523
Issue date
Mar 29, 1988
Hoechst Aktiengesellschaft
Manfred Hofinger
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...