ALEXANDRIA, Va., June 25 -- United States Patent no. 12,338,405, issued on June 24, was assigned to SHELL USA INC. (Houston).

"Fuel compositions" was invented by Tushar Kanti Bera (Houston), Kimberly Ann Johnson (Houston) and Allen Ambwere Aradi (Houston).

According to the abstract* released by the U.S. Patent & Trademark Office: "Fuel composition comprising: (a) a base fuel suitable for use in an internal combustion engine; (b) a tetraalkylethane compound having the formula (I): wherein Ar represents an aryl group and each X is independently selected from a hydrogen atom, substituted or unsubstituted, straight chain or branched C1-C12 alkyl group, (CH2)nOH or (CH2)nNH2, wherein n is in the range of 1 to 9, provided that at least one of t...