ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,414,474, issued on Sept. 9, was assigned to Baker Hughes Oilfield Operations LLC (Houston).

"Methods of forming piezoelectric materials, piezoelectric devices, and associated tooling and systems" was invented by Peter Leonard Wise (Ennis, Ireland), Aaron Avagliano (Tomball, Texas) and Navin Sakthivel (Spring, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of forming a piezoelectric device may include depositing a sol-gel film over a substrate and curing the sol-gel film by impinging light onto an exposed surface of the sol-gel film to form a piezoelectric ceramic element. The method may produce a piezoelectric composite material includin...