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Horst Ferch
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Bruchkobel, DE
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last 30 patents
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Patent Grant
Process for the production of slugs of pyrogenically produced oxides
Patent number
4,482,642
Issue date
Nov 13, 1984
Degussa Aktiengesellschaft
Manfred Ettlinger
C01 - INORGANIC CHEMISTRY
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Patent Grant
Aqueous dispersion of a hydrophobic silica
Patent number
4,274,883
Issue date
Jun 23, 1981
Deutsche Gold- und Silber-Scheideanstalt vormals Roessler
Gerd Lumbeck
C01 - INORGANIC CHEMISTRY