ALEXANDRIA, Va., April 9 -- United States Patent no. 12,270,003, issued on April 8, was assigned to Afton Chemical Corp. (Richmond, Va.).

"Additives with high sulfurization for lubricating oil compositions" was invented by Mitchell Latimer (Montpellier, Va.) and Jason Bell (Powhatan, Va.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a method for preparing a sulfurized alkyl phenate product to achieve a high sulfurization ratio of sulfurized alkyl phenate to unsulfurized alkyl phenate/phenol in the context of a neutralized and optionally overbased additive. The sulfurized alkyl phenate product is obtained by sulfurizing an alkyl phenol with a sulfur chloride blend that include...