Kerr-McGee, Conoco, and Phillips 66 all still exist as Conoco-Phillips. KM sold their refining and retail locations to Conoco, then Conoco merged with Phillips. There are still some Conoco-branded gas stations; I think the OnCue stations in the Norman/OKC area are mostly Conoco-branded.Kerr McGee, Texaco, Gulf, Conoco, Phillips 66