The Koch family (/ˈkoʊk/ KOKE) is an American family engaged in business and philanthropy, most noted for their and control of Koch Industries, the second-largest privately owned company in the United States (with 2013 revenues of $115 billion). The family business was started by Fred C. Koch, who developed a new cracking method for the refinement of heavy crude oil into gasoline. Fred's four sons litigated against each other over their interests in the business during the 1980s and 1990s.