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Sulzbach, DE
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last 30 patents
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Patent Grant
Process and apparatus for separating off suspended matter from liquids
Patent number
5,690,834
Issue date
Nov 25, 1997
Hoechst Aktiengesellschaft
Horst Bennoit
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Process for the removal of lead and cadmium from phosphoric acid
Patent number
5,431,895
Issue date
Jul 11, 1995
Hoechst Aktiengesellschaft
Dirk C. Vermaire
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Process and apparatus for the removal of solid particles from liqui...
Patent number
4,851,134
Issue date
Jul 25, 1989
Hoechst Aktiengesellschaft
Horst Bennoit
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for the filtration of zeolite suspensions
Patent number
4,260,495
Issue date
Apr 7, 1981
Hoechst Aktiengesellschaft
Horst Bennoit
C01 - INORGANIC CHEMISTRY