ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,455,260, issued on Oct. 28, was assigned to DRAGER SAFETY AG & Co. KGAA (Lubeck, Germany).
"Photo-ionization detector (PID) with multiple measuring cells and process using such a PID" was invented by Tim Blocker (Lubeck, Germany) and Lucas Pfennig (Lubeck, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A photo-ionization detector (100) and a process detect an ionizable substance in a gas (G). At least two measuring cells (20.1, 20.2, 20.3) are mounted on a measuring cell carrier (10). A radiation source (4) emits ionizing electromagnetic radiation towards the measuring cell carrier (10). The gas (G) reaches at least one measuring cell (20.1, 20....