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Ernst Hoyer
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Frankfurt am Main, DT
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last 30 patents
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Patent Grant
Water-soluble monoazo dyestuff containing a phenylene diazo component
Patent number
4,035,351
Issue date
Jul 12, 1977
Hoechst Aktiengesellschaft
Ludwig Schlafer
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Water-soluble phenyl-azo-naphthyl compounds
Patent number
4,002,606
Issue date
Jan 11, 1977
Hoechst Aktiengesellschaft
Ludwig Schlafer
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Water-soluble reactive dyestuffs of the monoazo series containing a...
Patent number
3,957,751
Issue date
May 18, 1976
Hoechst Aktiengesellschaft
August Bauer
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...