US Patent Issued to OTSUKA CHEMICAL on Nov. 18 for "Rubber composition, tire, and additive for rubber" (Japanese Inventors)

ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,422, issued on Nov. 18, was assigned to OTSUKA CHEMICAL Co. LTD. (Osaka, Japan).

"Rubber composition, tire, and additive for rubber" was invented by Shinya Shinozaki (Tokushima, Japan) and Mifuyu Ueno (Tokushima, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rubber composition comprising at least one member selected from the group consisting of compounds represented by the following formulas (1) to (7) and 3-methyl-5-pyrazolone, and a rubber component:wherein the R group is a hydrazide group, an N'-alkylidene hydrazide group, an N-allyl carbamoyl group, a 3-carboxyl acryloyl group, a hydrazine carboxyamino group, a thiocarboxyl group, a thi...