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 … predictive power on future innovation after 1995. This pattern is consistent with the idea that when there is more past upstream …

knowledge and facilitate innovation. The paper draws on the notion of network resources, distinguishing two types: social … important source of innovation. Overall, firms investing more in the development of their inter-firm and other external … knowledge networks enjoy higher levels of innovation. It is suggested that an over-reliance on social capital forms of network …