ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,207,902, issued on Jan. 28, was assigned to ILLUMISONICS INC. (Waterloo, Canada).
"Photoacoustic remote sensing (PARS)" was invented by Parsin Haji Reza (Waterloo, Canada) and Roger Zemp (Waterloo, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "A photoacoustic remote sensing system (PARS) for imaging a subsurface structure in a sample has an excitation beam configured to generate ultrasonic signals in the sample at an excitation location; an interrogation beam incident on the sample at the excitation location, a portion of the interrogation beam returning from the sample that is indicative of the generated ultrasonic signals; an optical system th...