In this work we analyse patterns of technological development using patent applications at the United States Patent and Trademark Office (USPTO) over the 1973-2012 period. Our study focuses on the combinations of technological fields within patent documents and their evolution in time, which can...

This paper examines the relationship between environmental policy and “green” innovation in shipbuilding. The primary motivating question of this work is whether there is evidence of: i) technology push from innovation that enables environmental policy initiatives; and/or, ii) policy pull...