ALEXANDRIA, Va., June 12 -- United States Patent no. 12,296,619, issued on May 13, was assigned to The Yokohamma Rubber Co. LTD. (Tokyo).
"Rubber composition for tires" was invented by Miyuki Iizuka (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A rubber composition contains: in 100 parts by mass of a diene rubber containing from 25 to 50 mass % of a butadiene rubber, 50 parts by mass or more of a plasticizer component; from 120 to 180 parts by mass of silica; M1 parts by mass of 3-octanoylthio-1-propyltriethoxysilane; and M2 parts by mass of alkylsilane. (M1+M2), a total of the 3-octanoylthio-1-propyltriethoxysilane and the alkylsilane, is from 5 to 10 mass % with respect to the mass of the...