US Patent Issued to Afton Chemical on Oct. 21 for "Methods of improving the performance of combustion engine after-treatment devices" (Virginia Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,582, issued on Oct. 21, was assigned to Afton Chemical Corp. (Richmond, Va.).

"Methods of improving the performance of combustion engine after-treatment devices" was invented by Ashutosh Gupta (Henrico, Va.) and Sheng Jiang (Glen Allen, Va.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides for methods of improving the performance of a combustion engine after-treatment device, such as particulate filters and/or three-way catalyst systems, over its useful life by using a lubricating oil composition including one or more base oils of lubricating viscosity and an additive package with increased amounts of least one oil-solub...