ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,479,243, issued on Nov. 25, was assigned to PIRELLI TYRE S.P.A. (Milan).
"Winter tyre" was invented by Giovanni Casarotto (Milan), Diego Ettore Speziari (Milan) and Gianmarco Fasano (Milan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A tyre includes at least one block on which at least one complex type sipe is obtained separating the block into two portions having a first surface and a second surface facing each other. The first surface is extended between a set of first and second longitudinal sections having, respectively, a first and a second radial profile, which are symmetrical to each other, each one comprising a coupling portion between the two...