ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,522,683, issued on Jan. 13, was assigned to CORNELL UNIVERSITY (Ithaca, N.Y.).

"Amphiphilic copolymer with zwitterionic and fluorinated moieties" was invented by Rong Yang (Ithaca, N.Y.) and Trevor Franklin (Ithaca, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are amphiphilic copolymers that include repeat units of formulas [Z]m and [P]n, wherein Z is a zwitterionic structural unit including at least one pendant heteroaromatic moiety, the heteroaromatic moiety containing a positively charged quaternary nitrogen atom (e.g., a pyridine ring), and wherein at least one negatively charged functional moiety is linked to the heteroaromatic moie...