ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,521,937, issued on Jan. 13, was assigned to Xerox Corp. (Norwalk, Conn.).

"Piezoelectric composite filaments and use thereof in additive manufacturing" was invented by Sarah J. Vella (Milton, Canada) and Yujie Zhu (Mississauga, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "Parts made by additive manufacturing are often structural in nature, rather than having functional properties conveyed by a polymer or other component. Printed parts having piezoelectric properties may be formed using a composite filament comprising a plurality of piezoelectric particles dispersed in a thermoplastic polymer. The composite filaments may be formed through melt b...