Richard Schaaf

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Haltern, DE

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Patents Grantslast 30 patents

Information Patent Grant
Esters of 3-tert-butyl or 3-tert-butyl-5-alkyl-4-hydroxylphenyl(alk...
- Patent number 4,912,249
- Issue date Mar 27, 1990
- Huels Aktiengesellschaft
- Friedrich-Wilhelm Kupper
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Esters of 3-tert-butyl- and 3-tert-butyl-5-alkyl-4-hydroxyphenyl (a...
- Patent number 4,859,790
- Issue date Aug 22, 1989
- Huels Aktiengesellschaft
- Friedrich-Wilhelm Kupper
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...