ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,518, issued on May 27, was assigned to SAFERA OY (Espoo, Finland).
"Device for measuring the quality of air" was invented by Samuli Lintonen (Vantaa, Finland) and Mikko Halonen (Espoo, Finland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A device for measuring the particle content of air comprises a laser source for generating laser light and for directing it to a target area, an air channel for directing the air subjected to the measurement as an air flow through the target area, and a light detector located adjacent to the target area for detecting bursts of light generated as the particles entrained with the air flow scatter the laser light in ...