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Peter Dopfer
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Frankfurt am Main, DE
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last 30 patents
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Patent Grant
Stable 3,3'-dichlorobenzidine dihydrochloride suspension
Patent number
5,417,881
Issue date
May 23, 1995
Hoechst Aktiengesellschaft
Dieter Steidl
C07 - ORGANIC CHEMISTRY
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Patent Grant
Azo pigment formulations
Patent number
4,515,639
Issue date
May 7, 1985
Hoechst Aktiengesellschaft
Peter Dopfer
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...