TIMELINE

1875

Conoco founded in Utah, selling kerosene as Continental Oil and Transportation.

1905

Brothers Frank and L.E. Phillips discover their first major well, north of Bartlesville, Okla.

1909

Continental builds the West’s first gasoline filling station.

1917

Phillips brothers form Phillips Petroleum Co.

1929

Continental merges with Marland oil, forming Continental Oil Company, or Conoco.

1957

Wham-O uses Phillips polyolefin plastic, trademarked “Marlex,” to make hula hoops; Wham-O sells 25 million in two months.

1981

DuPont buys Conoco in a deal worth about $7.4 billion – the largest merger in U.S. history then.

1998

Conoco separates from DuPont in $4.4 billion IPO, largest of its time.

2001

Phillips Petroleum and Conoco announce a $35 billion merger to create the nation’s thirdlargest integrated oil company.

2011

ConocoPhillips board approves separating the company’s refining and marketing from its exploration and production businesses into two corporations, Phillips 66 and ConocoPhillips.