ALEXANDRIA, Va., June 19 -- United States Patent no. 12,331,197, issued on June 17, was assigned to DAYCO EUROPE S.R.L. (Chieti, Italy).
"Power transmission belt" was invented by Marco Di Meco (Chieti, Italy), Fabio Nardone (Chieti, Italy) and Domenico Parziale (Chieti, Italy).
According to the abstract* released by the U.S. Patent & Trademark Office: "Power transmission belts described herein have a nitrile group-containing copolymer rubber that has an acrylonitrile unit, a monomer unit of Alpha,Beta-ethylenically unsaturated nitrile monomer other than acrylonitrile, and a conjugated diene monomer unit. The nitrile group-containing copolymer rubber has an iodine value of 120 or less a total of the acrylonitrile unit and the monomer unit ...