ALEXANDRIA, Va., July 3 -- United States Patent no. 12,343,427, issued on July 1, was assigned to Nivagen Pharmaceuticals Inc. (Sacramento, Calif.).

"Stable intravenous diltiazem hydrochloride formulation and use thereof" was invented by Niravbhai Jayantibhai Patel (Sacramento, Calif.), Robert Miller (Sacramento, Calif.), Maheshkumar Kalubhai Bhalaria (Sacramento, Calif.), Mahesh Sadashiv Khade (Sacramento, Calif.), Rucha Abhijit Kelekar (Sacramento, Calif.), Dasaradhi Lakkaraju (Sacramento, Calif.) and Jay Shukla (Sacramento, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A ready-to-use intravenous (IV) diltiazem composition that can be stored for extended periods."

The patent was filed on April 23,...