ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,449,308, issued on Oct. 21.
"Portable biosensor for air sample" was invented by Kin Chiu Ng (Fresno, Calif.) and Subrata Sanyal (Eastvale, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a portable biosensor that includes a sample filter cartridge, a filter collector, an optical sphere, an electromagnetic radiation emitter, a photo-detector, a processor, a signal display, a vacuum pump, and a power supply. The sample filter cartridge selectively removes small molecules to minimize spectral interference in the detection signal. The sample is concentrated onto the filter collector and subjected to illumination by the electromagnetic radi...