Erhard Worfel

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Hattersheim, DE

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Patents Grantslast 30 patents

Information Patent Grant
Azo pigments obtained by diazotizing in a dipolar aprotic organic s...
- Patent number 4,607,096
- Issue date Aug 19, 1986
- Hoechst Aktiengesellschaft
- Josef Landler
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Process for the preparation of azo pigments by diazotizing in a dip...
- Patent number 4,182,708
- Issue date Jan 8, 1980
- Hoechst Aktiengesellschaft
- Josef Landler
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Stable liquid aqueous composition of a water-soluble fiber-reactive...
- Patent number 4,118,184
- Issue date Oct 3, 1978
- Hoechst Aktiengesellschaft
- Konrad Opitz
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...