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Hellmut Kast
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Bobenheim-Roxheim, DT
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last 30 patents
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Patent Grant
Diazarhodamine-lactones, their manufacture and their use as dye int...
Patent number
4,052,398
Issue date
Oct 4, 1977
BASF Aktiengesellschaft
Hellmut Kast
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Manufacture of basic dyes by catalytic oxidation
Patent number
4,000,135
Issue date
Dec 28, 1976
BASF Aktiengesellschaft
Hellmut Kast
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Lactones of the benzazaxanthene series and dye-forming components f...
Patent number
3,997,541
Issue date
Dec 14, 1976
BASF Aktiengesellschaft
Ernst Schefczik
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Lactones of the benzaxanthere series and dye-forming components for...
Patent number
3,946,017
Issue date
Mar 23, 1976
Badische Anilin- & Soda-Fabrik Aktiengesellschaft
Ernst Schefczik
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Lactones of the diazaxanthene series, their production and their us...
Patent number
3,931,182
Issue date
Jan 6, 1976
BASF Aktiengesellschaft
Hellmut Kast
B60 - VEHICLES IN GENERAL