ALEXANDRIA, Va., June 4 -- United States Patent no. 12,319,836, issued on June 3, was assigned to CLARIANT INTERNATIONAL LTD (Muttenz, Switzerland).

"Intumescent flame-retardant clearcoat formulations" was invented by Klaus Bender (Vettweiss, Germany), Harald Bauer (Kerpen, Germany) and Andreas Termath (Cologne, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to intumescent flame-retardant clearcoat formulations containing 20% to 88.5% by weight of an aqueous synthetic resin formulation, 10% to 60% by weight of a phosphoric partial ester, 0.5% to 20% by weight of a polyol and 1% to 30% by weight of further ingredients, and to the use thereof."

The patent was filed on Aug. 27, 20...