ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,766,556, issued on Oct. 20.

"Ultrasonic transducers, matching layers, and related methods" was invented by Neelesh Bhadwal (Toronto), Ridha Ben-Mrad (Toronto) and Kamran Behdinan (Toronto).

According to the abstract* released by the U.S. Patent & Trademark Office: "A resonant type transducer transmitting or receiving narrowband continuous waves into or from a propagation medium, comprising a piezoelectric or electrostrictive vibrator having a specific acoustic impedance; a single matching layer or multiple matching layers contacting the piezoelectric or electrostrictive vibrator as well as the radiation medium to maximise power transfer to and from the transducer and the propagation ...