linked fields. Our analysis uses 1.8 million U.S. patents and their citation properties to map the innovation network and its … strength. Past innovation network structures are calculated using citation patterns across technology classes during 1975 …-1994. The interaction of this pre-existing network structure with patent growth in upstream technology fields has strong …

linked fields. Our analysis uses 1.8 million U.S. patents and their citation properties to map the innovation network and its … strength. Past innovation network structures are calculated using citation patterns across technology classes during 1975 …-1994. The interaction of this pre-existing network structure with patent growth in upstream technology fields has strong …

We build a model of firm-level innovation, productivity growth and reallocation featuring endogenous entry and exit. A … reduces growth and welfare. For example, a subsidy to incumbent R&D equivalent to 5% of GDP reduces welfare by about 1 …

Innovation and technological progress are the key determinants of long-run economic growth and welfare. Therefore, an … important question is, how can public policy encourage more innovation? In this chapter, I review some of the empirical findings … from various recent studies on innovation and firm dynamics that can shed light on the design of innovation policy. The …

An endogenous growth model is developed where each period firms invest in researching and developing new ideas. An idea … to gauge how efficiency in the patent market affects growth …