Exxon Mobil Corporation, doing business as ExxonMobil, is an American multinational oil and gas corporation headquartered in Irving, Texas. It is the largest direct descendant of John D. Rockefeller 's Standard Oil, and was formed on November 30, 1999 by the merger of Exxon (formerly the Standard Oil Company of New Jersey) In 1973, Standard Oil of New Jersey renamed itself "the Exxon Corporation", and adopted that trademark throughout the country. It maintained the rights to "Standard" and "Esso" in the states where it held those rights, by a token effort, by selling "Esso Diesel" in those states at stations that sell diesel fuel, Humble Oil and Refining Co. was founded in 1911 in Humble, Texas. In 1919, a 50% interest in Humble was acquired by Standard Oil of New Jersey which acquired the rest of the company in September 1959 and merged with its parent to become Exxon Company, USA in 1973.