ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,814, issued on June 9, was assigned to PPG Industries Ohio Inc. (Cleveland).
"Filiform corrosion resistant polyester/acrylic hybrid coating composition" was invented by Troy James Larimer (North Huntingdon, Pa.) and Brian Edward Woodworth (Glenshaw, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a powder coating composition including: an epoxy functional acrylic polymer; a hydroxyl functional polyester polymer including a first hydroxyl functional polyester polymer having an acid value of up to 10 and a weight average molecular weight of up to 20,000 g/mol; an acid functional crosslinker; and a blocked polyisocyan...