ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,404, issued on Feb. 3, was assigned to MacDermid Enthone Inc. (Waterbury, Conn.).

"Method for improving adhesion between metallization layers and ozone-etched plastics" was invented by Andreas Konigshofen (Leverkusen, Germany), Almedina Fetahovic (Waterbury, Conn.) and Stefan Schafer (Solingen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of metallizing plastic parts, the method comprising the steps of: (a) etching a plastic part, by introducing the plastic part into an aqueous, acidic ozone etching solution, (b) metallizing the ozone etched, plastic part, and (c) heating the metallized part in an oven at an elevated temperature fo...