 In 1933, he became chairman of the board of Standard Oil Company of New Jersey (later Exxon Company), which held substantial stock interest in Humble, and in 1937, he became president of Standard.Humble's restructuring allowed both companies to sell and market gasoline nationwide under the Esso, Enco and Humble brands.The Enco brand was introduced by Humble in the summer of 1960, at stations in Ohio, but was soon blackballed after Standard Oil of Ohio (Sohio) protested that Enco (Humble's acronym for "ENergy COmpany") sounded and looked too much like Esso as it shared the same oval logo with blue border and red letters with the two middle letters the only difference.