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Pennzoil is an American oil company founded in Los Angeles, California in 1913. In 1955, it was acquired by Oil City, Pennsylvania company South Penn Oil, a former branch of Standard Oil. In 1963, South Penn Oil merged with Zapata Petroleum; the merged company took the Pennzoil name. In 1968 United Gas Corporation became part of Pennzoil. (Although United Gas was a larger company, pre-merger, Pennzoil had successfully used a "leveraged buyout" strategy.) During the 1970s, the company moved its offices to Houston, Texas. In 1977 a spin-off company was formed called Pogo, which stood for Pennzoil Offshore Gas Operators. Pennzoil was headquartered in Pennzoil Place in Downtown Houston during the 1970s.〔"(General Conditions and Legal Notices )." Pennzoil. February 14, 1998. Retrieved on January 17, 2010.〕 In 1999 Pennzoil's E&P business (known as PennzEnergy) was acquired by Oklahoma City-based Devon Energy and the (known as ) Pennzoil-Quaker was purchased by Royal Dutch/Shell Group to form SOPUS—Shell Oil Products US. == Gasoline == Though not much emphasis has ever been placed on gasoline, Pennzoil does sell gas.〔http://articlesguidance.org/the-complete-history-of-pennzoil-y7h4s/〕 In the early parts of the company's history, the gas stations were branded as Pennzip, though they were later changed to Pennzoil. For decades, Pennzoil gas stations were mostly marketed in western Pennsylvania, western New York, northern and eastern Ohio, and northern West Virginia. In the 1990s, Pennzoil gas experienced a bit of a revival when Pittsburgh area convenience store chain Cogo's began co-branding themselves with Pennzoil. The co-branding only lasted a few years, and Cogo's switched brands to BP and Exxon in 2001. After Shell's purchase of Pennzoil, there was the possibility that the remaining Pennzoil stations—mostly in western PA—would be converted to Shell as part of the company's aggressive movement to expand nationally. This hasn't happened, but the three company-owned Pennzoil gas stations in the New Castle, Pennsylvania area began co-branding themselves with 7-Eleven in 2003, with more emphasis placed on the 7-Eleven brand name than Pennzoil itself. As of June 2009, only one Pennzoil/7-Eleven combination remains, as another converted to BP in 2006 while retaining 7-Eleven (a Pennzoil in Ambridge, Pennsylvania also converted to BP at the same time). On June 8, 2009, the other Pennzoil/7-Eleven was sold to private owners and became an independent, unbranded location. There is also a surviving Pennzoil station in Ashtabula, Ohio right off of Ohio State Route 11. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Pennzoil」の詳細全文を読む スポンサード リンク
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