Hellmut Kast

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Bobenheim-Roxheim, DT

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Patents Grantslast 30 patents

Information 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