ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,689, issued on Oct. 21, was assigned to Atotech Deutschland GmbH (Berlin).
"Aqueous post treatment composition and method for corrosion protection" was invented by Mike Kruger (Berlin), Ercan Karapinar (Berlin), Martin Lenz (Berlin), Anna Amell Tosas (Berlin) and Dennis Stritter (Berlin).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention is related to an aqueous post treatment composition for providing a post treatment layer on at least a part of a passivation layer, which is covering at least a part of a zinc layer being on at least a part of an iron containing substrate, characterized in that the aqueous post treatment composition...