ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,657, issued on June 30, was assigned to CARNEGIE MELLON UNIVERSITY (Pittsburgh).
"Polynorbornene-based polycations" was invented by Kevin Noonan (Pittsburgh), Ryan Selhorst (Dayton, Ohio) and Jamie Gaitor (Coraopolis, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A multiblock, cationic-functionalized norbornene copolymer is formed by a process including performing a vinyl addition polymerization in the presence of a metal catalyst of a first norbornene monomer substituted with a first alkyl group and a second norbornene monomer substituted with a second alkyl group by adding a predetermined amount of the first norbornene monomer and a predeterm...