John P. Ranieri is Vice President and General Manager – DuPont BioMaterials Group, responsible for a broad portfolio of renewably sourced products. Prior to this position be was general manager - DuPont Applied BioSciences - Energy & Specialties with responsibility for the BioFuels and Specialties businesses. Prior to joining DuPont, he was managing director of the cardiovascular and biomaterials divisions at Aortech International. He was previously vice president of Sulzer Biologics. Mr. Ranieri received a Ph.D. in medical science and a master's degree in materials engineering as a Miciolli fellow from Brown University and was an assistant doctorant at the division of surgical research and gene therapy at Lausanne University Medical School. He completed the advanced management program at the Wharton Business School.