ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,479,942, issued on Nov. 25, was assigned to COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN (Clermont-Ferrand, France).

"Method for producing a rubber composition" was invented by Etienne Fleury (Clermont-Ferrand, France) and Julien Cladiere (Clermont-Ferrand, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A process for manufacturing a rubber composition which comprises more than 50 phr of a diene elastomer rich in ethylene units, a reinforcing filler comprising a carbon black and a vulcanization system comprising sulfur, a sulfenamide as primary accelerator and a thiuram polysulfide or a mixture of a thiuram polysulfide and a guanidine as seconda...