ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,653, issued on Oct. 28, was assigned to Afton Chemical Corp. (Richmond, Va.).

"Gasoline additive composition for improved engine performance" was invented by Janice Jianzhao Wang (Glen Allen, Va.) and Andre Williams (Richmond, Va.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides fuel additives including Mannich detergent additive(s) and Mannich-based quaternary ammonium salt detergent additive(s) effective to improve engine performance in both port fuel injected and gasoline direct injection engines."

The patent was filed on Dec. 11, 2023, under Application No. 18/535,219.

*For further information, including images, c...