ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,134, issued on May 20, was assigned to INNOSPEC Ltd. (Ellesmere Port, Great Britain).

"Compositions and methods and uses relating thereto" was invented by Alan Norman Ross (Ellesmere Port Cheshire, Great Britain), Martin Roberts (Ellesmere Port Cheshire, Great Britain) and Alexander Smith (Ellesmere Port Cheshire, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A fuel composition comprising as an additive the reaction product of a polycarboxylic acid compound of formula (I): (I) or an anhydride thereof; and an alcohol having at least 5 carbon atoms; wherein each of n and m may be 0 or a positive integer."

The patent was filed on Nov. 6...