ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,427,058, issued on Sept. 30, was assigned to Alcon Inc. (Fribourg, Switzerland).

"Bi-modal ultrasonic handpiece system" was invented by James Y. Chon (Irvine, Calif.), Ahmad Salehi (Irvine, Calif.), Kurt D. Leukanech (Laguna Niguel, Calif.), Satish Yalamanchili (Irvine, Calif.), Dan Teodorescu (Irvine, Calif.) and Ho Man Michael Fong (Irvine, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An ultrasonic handpiece includes a piezoelectric element assembly. Control signals drive the piezoelectric element assembly simultaneously in a first mode of oscillation and a second mode of oscillation. Feedback of a resulting oscillation of the piezoelectric ...