ALEXANDRIA, Va., July 14 -- United States Patent no. 12,679,013, issued on July 14, was assigned to EAST ROCK UNION Ltd. (Beijing).

"Transfer molding mold and transfer molding apparatus for vulcanized rubber boots" was invented by Jue Wang (Beijing) and Yongjiang Zong (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "A die-casting forming mold for vulcanized rubber boots, comprising: a combined shaft mold provided with an inner cavity corresponding to a shaft of a rubber boot; a last mold 21 provided with partition elements, comprising a body substantially corresponding to the shaft of the rubber boot in shape, and two or more partition elements disposed on the body, the last mold 21 being adapted to b...