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Hans-Joachim Lenz
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Hofheim am Taunus, DE
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last 30 patents
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Patent Grant
Diaryl pigments with improved heat stability obtained by coupling b...
Patent number
4,665,163
Issue date
May 12, 1987
Hoechst Aktiengesellschaft
Klaus Hunger
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
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Patent Grant
Dyeing agent compositions based on polypropylene wax
Patent number
4,235,641
Issue date
Nov 25, 1980
Hoechst Aktiengesellschaft
Manfred Engelmann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...