ALEXANDRIA, Va., July 23 -- United States Patent no. 12,365,674, issued on July 22, was assigned to Merck Sharp & Dohme LLC (Rahway, N.J.).

"Inhibitors of histone deacetylase useful for the treatment or prevention of HIV infection" was invented by Dane James Clausen (Rahway, N.J.), Joseph A. Kozlowski (Princeton, N.J.), Jian Liu (Edison, N.J.), Scott E. Wolkenberg (Wyndmoor, Pa.) and Wengsheng Yu (Edison, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to Compounds of Formula I and pharmaceutically acceptable salts or prodrug thereof, wherein R1, R2, R3, R4, X and A are as defined herein. The present invention also relates to compositions comprising at least one compound of ...