Hans Kramb

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San Cugat del Valles, ES

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Patents Grantslast 30 patents

Information Patent Grant
Sulfo containing disazo dyestuffs derived from diazotized 4,4'-diam...
- Patent number 4,089,851
- Issue date May 16, 1978
- Bayer Aktiengesellschaft
- Hans Kramb
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Hydroxynaphthalene trisazo dyestuffs
- Patent number 4,009,156
- Issue date Feb 22, 1977
- Bayer Aktiengesellschaft
- Hans Kramb
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Sulfonic-acid substituted disazo dyestuffs
- Patent number 4,008,215
- Issue date Feb 15, 1977
- Bayer Aktiengesellschaft
- Hans Kramb
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...