US Patent Issued to ENTEGRIS on Nov. 18 for "Multistage gas sampling trap and detection of sulfurous species contaminant" (Massachusetts Inventor)

ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,474,236, issued on Nov. 18, was assigned to ENTEGRIS INC. (Billerica, Mass.).

"Multistage gas sampling trap and detection of sulfurous species contaminant" was invented by Charles Miller (Taunton, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A gas sampling trap includes a first stage and a second stage. The first stage includes a metal salt that reacts with sulfurous species to produce acidic gas. The second stage configured to receive the acidic gas produced in the first stage. An adsorbent substrate in the second stage adsorbs the acidic gas. A method of sampling a gas includes directing gas onto a metal stage within a first stage to produce a...