ALEXANDRIA, Va., June 4 -- United States Patent no. 12,319,757, issued on June 3, was assigned to SOLVAY SPECIALTY POLYMERS ITALY S.P.A. (Bollate, Italy).
"Method for making fluoropolymers" was invented by Marco Avataneo (Milan), Ugo De Patto (Cogliate, Italy), Giuseppe Marchionni (Milan) and Mirko Tavano (Milan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention pertains to a method of making fluoropolymer dispersions using certain polyfunctional perfluoropolyether derivatives including a plurality of ionisable groups selected from the group consisting of -SO.sub.3X.sub.a, -PO.sub.3X.sub.a and -COOX.sub.a, whereas X.sub.a is H, an ammonium group or a monovalent metal, and whereas said groups are co...