ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,503,991, issued on Dec. 23, was assigned to K&N Engineering Inc. (Corona, Calif.).
"Filter oil formulation" was invented by Steve Williams (Cherry Valley, Calif.) and Jere James Wall (Helendale, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A filter oil composition and a method for removing airborne molecular contaminants from air are provided. The composition includes a first portion comprising paraffinic oil by volume of the composition, a second portion comprising polyalphaolefin by volume of the composition, and a third portion comprising red dye by volume of the composition. Applying the filter oil composition to a cotton air filter materia...