ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,775, issued on Dec. 30, was assigned to M-M-MORANT-GMBH (Bernau, Germany).
"Chromium(VI)-free coating agent for metals" was invented by Alexander Ruhl (Bernau, Germany) and Max Mordant (Bernau, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a coating agent for coating acid-sensitive metal surfaces, which is an aqueous solution of an acidic phosphate binder, the coating agent comprising a peroxo compound and being free of chromium (VI) salts. The invention further relates to a method of coating a metal surface with such a coating agent, and to the use of such a coating agent for increasing the corrosion resistance of ...