ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,552,919, issued on Feb. 17.

"Vulcanization process for rubber products" was invented by Irina S. Yurovskaya (Corpus Christi, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A process for preparing a rubber article involves modifying the crosslinking density in one region of the article relative to another region of the article. The modification can be carried out by increasing or decreasing the energy transferred to the first region relative to the energy transferred to the second region during vulcanization. In one implementation, the process is conducted in a mold. Rubber parts described have two or more regions that differ from one another with ...