ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,427,809, issued on Sept. 30, was assigned to Regents of the University of Minnesota (Minneapolis).

"Non-pneumatic tire" was invented by Stefano Gonella (Saint Paul, Minn.) and William Zunker (Verona, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A non-pneumatic tire defining axial, radial, and circumferential directions. The tire includes an annular lattice structure extending radially between an inner circumferential edge and an outer circumferential edge. The lattice structure exhibits topological polarization, with the inner circumferential edge being stiffer than the outer circumferential edge. The topological polarization includes asymmetry ...