Jersey (which became Exxon) and Standard Oil of New York (which became Mobil). Standard's president, John D. Rockefeller, had long since retired from any management role. But, as he owned a quarter of the shares of the resultant companies, and those share values mostly doubled, he emerged from the dissolution as the richest man in the world. The dissolution had actually propelled Rockefeller's personal wealth. Breakup By 1911 the Supreme Court of the United States ruled, in Standard Oil Co. of New Jersey v. United States, that Standard Oil of New Jersey must be dissolved under the Sherman Antitrust Act and split into 43 companies. Two of these companies were Standard Oil of New Jersey (Jersey Standard or Esso), which eventually became Exxon, and Standard Oil of New York (Socony), which eventually became Mobil; those two companies later merged into ExxonMobil. Over the next few decades, both companies grew significantly. Jersey Standard, led by Walter C. Teagle, became the largest oil producer in the world. It acquired a 50 percent share in Humble Oil & Refining Co., a Texas oil producer. Socony purchased a 45 percent interest in Magnolia Petroleum Co., a major refiner, marketer, and pipeline transporter. In 1931, Socony merged with Vacuum Oil Co., an industry pioneer dating back to 1866, and a growing Standard Oil spin-off in its own right. In the Asia-Pacific region, Jersey Standard had oil production and refineries in the Dutch East Indies but no marketing network. Socony-Vacuum had Asian marketing outlets supplied remotely from California. In 1933, Jersey Standard and Socony-Vacuum merged their interests in the region into a 50–50 joint venture. Standard-Vacuum Oil Co., or "Stanvac", operated in 50 countries, from East Africa to New Zealand, before it was dissolved in 1962. Rockefeller's original company, Standard Oil Company of Ohio (Sohio), effectively ceased to exist when it was purchased by BP in 1987. BP continued to sell gasoline under the Sohio brand until 1991. Other Standard oil entities include "Standard Oil of Indiana" which became Amoco after other mergers and a name change in the 1980s, and "Standard Oil of California" which became the Chevron Corp. Legacy and criticism of breakup Some have speculated that if not for that court ruling, Standard Oil could have possibly been worth more than $1 trillion in the 2000s. Whether the breakup of Standard Oil was beneficial is a matter of some controversy. Some economists believe