ALEXANDRIA, Va., July 14 -- United States Patent no. 12,679,959, issued on July 14, was assigned to Hanwha Total Petrochemical Co. Ltd. (Chungcheongnam-do, South Korea).

"Method for producing rubber composition, rubber composition and tire produced by employing the same" was invented by Jun Keol Choi (Chungcheongnam-do, South Korea), Do Hoon Lee (Chungcheongnam-do, South Korea), Sung Kyo Jung (Chungcheongnam-do, South Korea) and Yeon Shick Yoo (Chungcheongnam-do, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for preparing a rubber composition capable of improving the physical properties of a final product is disclosed. A rubber composition is prepared by dispersing polybutene in rubber ...