US Patent Issued to Evonik Operations on Nov. 18 for "Use of silicon dioxide for improving the cathodic anticorrosion effect of ground coats" (German Inventors)

ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,654, issued on Nov. 18, was assigned to Evonik Operations GmbH (Essen, Germany).

"Use of silicon dioxide for improving the cathodic anticorrosion effect of ground coats" was invented by Markus Hallack (Schermbeck, Germany), Berend-Jan de Gans (Muelheim an der Ruhr, Germany), Florian Dullmann (Hagen, Germany) and Sascha Herrwerth (Freigericht, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method using silicon dioxide improves the cathodic anticorrosion effect of ground coats, preferably of a zinc primer, based on epoxy-functional polymers and at least one metal particle."

The patent was filed on Aug. 11, 2021, under Application No. 17/399...