Frank Alfter

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Kelkheim, DE

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Patents Grantslast 30 patents

Information Patent Grant
Isoindoline pigments based on aminoquinoxalinediones
- Patent number 5,716,446
- Issue date Feb 10, 1998
- Hoechst Aktiengesellschaft
- Frank Alfter
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Isoindoline pigments
- Patent number 5,698,705
- Issue date Dec 16, 1997
- Hoechst Aktiengesellschaft
- Frank Alfter
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...