ALEXANDRIA, Va., June 16 -- United States Patent no. 12,306,104, issued on May 20, was assigned to Wynd Technologies Inc. (San Mateo, Calif.).
"Particulate detection, counting, and identification" was invented by Jason Duy Vuu (San Jose, Calif.) and Raymond Rui Wu (Millbrae, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Particulate sensing systems or processes identify particulates suspended in an air sample by irradiating the air sample with UV light and measuring light from individual particles in the air sample. Two photodiodes having different wavelength sensitivity may be used to measure the fluorescent light emitted from a single particle, and a type of the particle may be identified using outp...