Exxon Mobil Corporation, or ExxonMobil, is an American multinational oil and gas corporation headquartered in Irving, Texas, United States. It is a direct descendant of John D. Rockefeller's Standard Oil company, and was formed on November 30, 1999, by the merger of Exxon and Mobil (formerly Standard Oil of New York and Standard Oil of New Jersey.) It is affiliated with Imperial Oil which operates in Canada.
ExxonMobil is the world's largest company by revenue and in 2013, became the largest publicly traded company by market capitalization in the world. The company is ranked #5 globally in Forbes Global 2000 list in 2013. Exxon Mobil's reserves were 72 billion oil-equivalent barrels at the end of 2007 and, at then (2007) rates of production, are expected to last over 14 years. With 37 oil refineries in 21 countries constituting a combined daily refining capacity of 6.3 million barrels (1,000,000 m3), Exxon Mobil is the largest refiner in the world, a title that was also associated with Standard Oil since its incorporation in 1870.
Exxon Mobil is also a technology company, focussing mainly on the demand for cleaner, sustainable fuel. They have a long history of leadership in the petroleum and petrochemical industries. ExxonMobil is a leader in the chemical industry, with interests in 46 wholly owned and joint-venture manufacturing locations worldwide. ExxonMobil is the largest producer of polyolefins, including plastics and polymers, and one of the largest producers of basic petrochemical building blocks, such as aromatics and olefins.