ALEXANDRIA, Va., June 5 -- United States Patent no. 12,274,808, issued on April 15, was assigned to Purdue Research Foundation (West Lafayette, Ind.).

"Collagen-based therapeutic delivery systems" was invented by Sherry Voytik-Harbin (Zionsville, Ind.) and Rucha Joshi (Davis, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A collagen-based therapeutic delivery device includes an insoluble synthetic collagen-fibril matrix comprising a polymerization product of soluble oligomeric collagen or a polymerization product of a mixture of soluble oligomeric collagen with one or more type of non-oligomeric soluble collagen molecules, such as, for example, soluble telocollagen and/or soluble atelocollagen, and an...