ALEXANDRIA, Va., June 12 -- United States Patent no. 12,296,319, issued on May 13, was assigned to Johnson Matthey PLC (London).

"Composite, zoned oxidation catalys for a compression ignition internal combustion engine" was invented by Andrew Chiffey (Royston, Great Britain), Kieran Cole (Rosyton, Great Britain), Oliver Cooper (Royston, Great Britain), Christopher Daly (Royston, Great Britain), Lee Gilbert (Royston, Great Britain), Robert Hanley (Royston, Great Britain), David Micallef (Royston, Great Britain), Francois Moreau (Royston, Great Britain), Paul Phillips (Royston, Great Britain) and George Platt (Royston, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A composite oxidation catalyst ...