US Patent Issued to Johnson Matthey on June 10 for "Exhaust gas treatment system" (British, American Inventors)

ALEXANDRIA, Va., June 18 -- United States Patent no. 12,325,003, issued on June 10, was assigned to Johnson Matthey PLC (London).

"Exhaust gas treatment system" was invented by Henry Arthur Claxton (London), Olivier Leroux (Royston, Great Britain), Andrew Scullard (Reading, Great Britain) and Thomas Manning Yeh (Audubon, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to an exhaust system for the treatment of an exhaust gas comprising ammonia in an amount of up to 250 ppm, the system comprising: an exhaust gas inlet; an ammonia storage material arranged to receive an exhaust gas from the exhaust gas inlet; an ammonia oxidation catalyst arranged downstream of a selected portion of the...