ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,342, issued on March 25, was assigned to Hikma Pharmaceuticals USA Inc. (Berkeley Heights, N.J.).

"Phenylephrine hydrochloride ready-to-use solution" was invented by David E. McAnany (Berkeley Heights, N.J.), Michael G. Parker (Berkeley Heights, N.J.) and Sarah D. Mccue (Berkeley Heights, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "This invention relates to a dilute, ready-to-use solution of phenylephrine hydrochloride having improved stability and utility. In a particular embodiment, the formulation consists of an injectable form of phenylephrine hydrochloride with edetate disodium chelating agent in place of any sodium metabisulfite antio...