SUGAR LAND--November 2, 2012--Researched by Industrial Info Resources (Sugar Land, Texas)--Marathon Petroleum Corporation (NYSE:MPC) (Findlay, Ohio), a leading petroleum refiner, announced third-quarter 2012 earnings that were slightly ahead with those from the same period last year, despite a small drop in refining margins. Net income for the quarter was reported to be $1.22 billion, an 8.03% increase from third-quarter 2011. Other companies featured: BP plc (NYSE:BP)