ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,443, issued on March 25, was assigned to The University of Akron (Akron, Ohio).

"Poly(propylene fumarate)-based copolymers for 3D printing applications" was invented by Matthew Becker (Chapel Hill, N.C.), Yongjun Shin (Fairlawn, Ohio) and Gaelle Le Fer (Akron, Ohio).

According to the abstract* released by the U.S. Patent & Trademark Office: "In various embodiments, the present invention is directed to a PPF-based copolymer for 3D printing applications and methods for its making and use. These copolymers have a viscosity in a printable viscosity range and allow light transmittance at curing wavelengths. In various embodiments, a lower viscosity copolymers are obtained by substitu...