Walter Iff

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Craponne, FR

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Patents Grantslast 30 patents

Information Patent Grant
Preparation of 1:2 chromium complex azo dyes asymmetrically substit...
- Patent number 4,997,917
- Issue date Mar 5, 1991
- Ciba-Geigy Corporation
- Walter Iff
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Preparation of 1:2 chromium complex azo dyes asymmetrically substit...
- Patent number 4,933,437
- Issue date Jun 12, 1990
- Ciba-Geigy Corporation
- Walter Iff
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...