ALEXANDRIA, Va., June 12 -- United States Patent no. 12,296,340, issued on May 13, was assigned to The Regents of the University of California (Oakland, Calif.).
"Omnidirectional spiral surface acoustic wave generation" was invented by James Friend (San Diego), Jiyang Mei (San Diego), Gopesh Tilvawala (San Diego) and Naiqing Zhang (San Diego).
According to the abstract* released by the U.S. Patent & Trademark Office: "Articles of manufacture, including an apparatus for omnidirectional spiral surface acoustic wave generation, are provided. An acoustic wave device that generates a plurality of acoustic wave includes a piezoelectric material to convert electric energy into the plurality of acoustic waves. The acoustic wave device also includ...