ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,297, issued on Dec. 9, was assigned to Toyo Tire Corp. (Itami, Japan).
"Devulcanized rubber, rubber composition, and pneumatic tire" was invented by Shouhei Morimoto (Itami, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a devulcanized rubber obtained by mixing a devulcanizing agent having an alkylsulfonamide group and a vulcanized rubber. The devulcanizing agent preferably contains a sulfonamide compound of an alkylamine having 12 or more carbon atoms. The present invention also relates to a rubber composition comprising the devulcanized rubber. The rubber composition preferably contains 1 to 30 parts by mass o...