Signs of things to come?What patent submissions by small andmedium-sized enterprises say about corporate strategies in emerging technologies

a Center for Nanotechnology in Society, University of California Santa Barbara, Santa Barbara, CA 93106-2150, USA b Georgia Tech Program in Science, Technology and Innovation Policy, Atlanta, GA 30332-0345, USA c Enterprise Innovation Institute, Georgia Institute of Technology, Atlanta, GA 30332-0345, USA d School of Public Policy, Georgia Institute of Technology, Atlanta, GA 30332-0345, USA e Manchester Institute of Innovation Research, Manchester Business School, University of Manchester, Manchester, M13 9PL, UK f Center for Nanotechnology in Society, Arizona State University, Tempe, AZ 85287-4401, USA