1879: Standard Oil Co., headed by John D. Rockefeller, purchases a three-quarter interest in Vacuum
1870: Rockefeller and four partners organize Standard Oil Company in Ohio
1882: Rockefeller organizes his various oil holdings into the Standard Oil Trust, with headquarters in New York
1882: Standard Oil of New York formed
1911: Standard Oil Company of New York (Socony) founded with dissolution of Standard Oil
1918: Socony purchases a 45% interest in Magnolia Petroleum Co.
1926: Socony purchases the properties of General Petroleum Corp. of California
1929: Vacuum acquires the Lubrite Refining Co., a refining and marketing company based in St. Louis 1930: Socony acquires White Eagle Oil & Refining Co.
1930: Vacuum acquires Wadhams Oil Corp., and the White Star Refining Co.
1931: Socony acquires all the assets of Vacuum Oil Co. and changes its name to Socony-Vacuum Corp.
1933: Socony-Vacuum and Standard of New Jersey merge their Far East facilities and interests into a 50-50 venture called Standard-Vacuum Oil Co., or Stanvac
1934: Socony-Vacuum Corp. changes its name to Socony-Vacuum Oil Co., Inc.
1947: Anglo-Iranian, Jersey and Socony sign 20-year contract with Iran
1948: Jersey (30%) and Socony-Vacuum (10%) join Socal (30%) and Texaco (30%) in Aramco venture
1954: Consortium of oil companies, including British Petroleum, Exxon, Socony, Texaco and Socal, Gulf, Royal Dutch/Shell Group, and CFP form the Iranian Oil Participants Ltd. (IOP) and negotiate agreement with Iranian government and for oil production in Iran
1955: Socony-Vacuum changes name to Socony Mobil Oil Company
1959: Magnolia Petroleum and General Petroleum merged with other domestic subsidiaries into Socony Mobil Oil Company; Two major operating divisions created within the company: Mobil Oil Co. for the U.S. and Canada, and Mobil International Oil Co. for the rest of the world (except the areas in which Stanvac had interests)
1960: Mobil Chemical Co. formed
1960: Mobil Petroleum Co. Inc. formed to oversee Socony Mobil's 50% interest in Stanvac
1962: Assets of Stanvac split between Jersey and Socony Mobil
1966: Socony Mobil Oil Co. changes name to Mobil Oil Corporation. Mobil Oil Co. becomes the North American Division; Mobil International becomes the International Division, with coordinating responsibility for Mobil Petroleum Co. Inc.
1971: Mobil enters joint venture with Iranian Oil Company
1972: Mobil's 11.875% stake in Iraq Petroleum Company is nationalized
1975: Mobil increases its share of Aramco from 10% to 15%
1976: Mobil completes acquisition of Marcor, the holding company for Montgomery Ward Department Stores
1976: Mobil Corporation formed as holding company
1979: Mobil sells 51% of its Turkish refinery to Turkish Petroleum
1984: Mobil acquires 100% of Superior Oil
1985: Yanbu Petrochemical Company (YANPET), a joint venture petrochemicals complex at Yanbu, Saudi Arabia plant begins operation; Mobil and Saudi Basic Industries Corporation (SABIC) are 50-50 partners in YANPET
1996: The Qatargas project, in which Mobil has a 10% interest, comes on line producing first LNG from Qatar
1996: Mobil commissions two new plants in Yemen and Syria
1997: Second Qatargas liquefaction train completed