The aim of this paper is to extend the theoretical literature on knowledge and network structure by considering explicitly the choice to use the social network as a learning mechanism. In the model, we consider a set of actors that creates and diffuses knowledge. They are located on a lattice...

This paper estimates the diffusion and obsolescence of technological knowledge by technological field, country and type of institutions that generates it. We use two comparable samples of patents and patent citations from the NBER U.S. Patent Citations Dataset (based on patents from the US...

Widespread adoption of a new capital-embodied technology often requires a continuous flow of incremental innovations, aimed at making renting the new machine a viable alternative to buying it, or at dividing it up in modular elements, and possibly allowing for product range extension....

This paper estimates the international diffusion and obsolescence of technological knowledge by technological field and country using patent citations from the U.S. Patent and Trademark Office (USPTO) and from the European Patent Office (EPO). We control for self-citations and for procedural and...