Otmar Hafner

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Glashutten, DE

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Patents Grantslast 30 patents

Information Patent Grant
Addition compounds, a process for the preparation, and their use, b...
- Patent number 5,070,159
- Issue date Dec 3, 1991
- Hoechst Aktiengesellschaft
- Erwin Dietz
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Powdered azo pigments with improved rheological properties, process...
- Patent number 5,066,687
- Issue date Nov 19, 1991
- Hoechst Aktiengesellschaft
- Wolfgang Rieper
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Powdered pigments with improved rheological properties, processes f...
- Patent number 4,732,618
- Issue date Mar 22, 1988
- Hoechst Aktiengesellschaft
- Ernst Spietschka
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Addition compounds and process for their preparation
- Patent number 4,631,330
- Issue date Dec 23, 1986
- Hoechst Aktiengesellschaft
- Erwin Dietz
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...