ALEXANDRIA, Va., July 3 -- United States Patent no. 12,343,235, issued on July 1, was assigned to DDS Co. Inc. (Durham, N.C.).

"Tissue borne stackable foundation guide and method of making and using same" was invented by Cornelis J. Janse Van Rensburg (Durham, N.C.), Brian Lee (Durham, N.C.) and Matthew Vrhovac (Durham, N.C.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A tissue borne stackable foundation guide is provided. The foundation guide may include a main body; first connectors formed on and spaced about an outer surface of the main body; one or more ports spaced about the main body and forming a passage therethrough; and protrusions formed on an inner surface of the main body and extending in a gen...