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Heinz-Peter Hemmerich
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Krefeld, DE
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last 30 patents
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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
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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
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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...
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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