Heinz-Peter Hemmerich

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Krefeld, DE

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Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of o-benzylphenol
- Patent number 4,506,103
- Issue date Mar 19, 1985
- Bayer Aktiengesellschaft
- Heinz-Peter Hemmerich
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of N-alkylated aromatic amines
- Patent number 4,268,458
- Issue date May 19, 1981
- Bayer Aktiengesellschaft
- Werner Schulte-Huermann
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of pigment concentrates
- Patent number 4,244,863
- Issue date Jan 13, 1981
- Bayer Aktiengesellschaft
- Heinz Hemmerich
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Production of readily dispersible titanium dioxide pigments
- Patent number 4,235,768
- Issue date Nov 25, 1980
- Bayer Aktiengesellschaft
- Helmut Ritter
- C01 - INORGANIC CHEMISTRY