ALEXANDRIA, Va., July 14 -- United States Patent no. 12,679,953, issued on July 14, was assigned to OMYA INTERNATIONAL AG (Oftringen, Switzerland).
"Reinforced fluoropolymer" was invented by Matthias Welker (Hesingue, France) and Samuel Rentsch (Spiegel bei Bern, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A curable fluoropolymer composition includes a crosslinkable fluorine-containing polymer, and a filler selected from surface-reacted calcium carbonate, ultrafine calcium carbonate, or a mixture thereof, wherein the surface-reacted calcium carbonate is a reaction product of natural ground calcium carbonate or precipitated calcium carbonate with carbon dioxide and one or more H3O+ ion donors, ...