US Patent Issued to The United States of America represented by the Secretary of the Army on July 14 for "Multi-material polymer filament for three-dimensional printing" (Maryland, Wisconsin Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,199, issued on July 14, was assigned to The United States of America represented by the Secretary of the Army (Washington).

"Multi-material polymer filament for three-dimensional printing" was invented by Eric D. Wetzel (Baltimore), Kevin R. Hart (Milwaukee) and Ryan M. Dunn (Belcamp, Md.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A thermoplastic filament comprising multiple polymers of differing flow temperatures in a geometric arrangement is described. A method for producing such a filament is also described. Because of the difference in flow temperatures, there exists a temperature range at which one polymer is mechanically stable while the o...