Standard Oil Standard Oil Standard Oil Co. Inc. was an American oil producing, transporting, refining, and marketing company. Established in 1870 by John D. Rockefeller and Henry Flagler as a corporation in Ohio, it was the largest oil refinery in the world of its time. Its history as one of the world's first and largest multinational corporations ended in 1911, when the United States Supreme Court, in a landmark case, ruled that Standard Oil was an illegal monopoly. Standard Oil dominated the oil products market initially through horizontal integration in the refining sector, then, in later years vertical integration; the company was
Standard Oil of Kentucky in the US Supreme Court case "Standard Oil Co. of New Jersey v. United States" in 1911, Kyso was spun off to market to the states of Kentucky, Georgia, Florida, Alabama, and Mississippi. As was common at the time, though no longer controlled by a single entity, the various "Baby Standards" still continued to cooperate. For example, Kyso was supplied by fellow "Baby Standard" Standard Oil of New Jersey, better known as Esso. The company avoided the consolidation prevalent in the industry throughout the first half of the century, and continued to sell various Esso and Mobil Oil products. In