The past year has been a success for the Big Ten Conference, at least in terms of sponsorship revenue.The collegiate athletic conference has secured more than five new partners over the past 12 months, with a nod to companies in nontraditional categories.New and/or recent partners include Bayer, International Truck, U.S. Cellular, Valvoline and Kraft Heinz (Devour).The partnerships add to a portfolio that includes Libman Co. (mops), ArcelorMittal (steel) and U.S. Customs and Border Protection.IE...