ALEXANDRIA, Va., June 19 -- United States Patent no. 12,329,852, issued on June 17, was assigned to University of Southern California (Los Angeles).

"Sustained-release 9-cis retinoic acid implantable drug delivery pellets for the prevention of postsurgical edema and lymphedema" was invented by Alex K. Wong (Los Angeles) and Young-Kwon Hong (Pasadena, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of treating post-surgical edema includes a step of administering an effective amount of a pharmaceutical composition to a subject identified a risk of post-surgical edema. The pharmaceutic composition include a retinoic acid component selected from the group consisting of 9-cis retinoic acid, geometr...