ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,702,729, issued on Aug. 11, was assigned to The University of Akron (Akron, Ohio).
"Resorbable complex shape memory poly(propylene fumarate) star scaffolds for 4D printing applications" was invented by Matthew Becker (Chapel Hill, N.C.) and Gaelle Le Fer (Lille, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "In various embodiments, the present invention is directed resorbable star PPF 4D printed structures with compressive shape memory properties. In some embodiments, these printed structures may be compressed at room temperature from a first thickness to a second thickness for insertion into the body, where they reach body temperature and expand...