generating subsequent citations to patents as a lens for viewing knowledge diffusion. We find that the probability of patent … citation over time after a patent is granted fits well to a double-exponential function that can be interpreted as the mixture …

We compare the geographic location of patent citations to those of the cited patents, as evidence of the extent to …

technologies. Here we combine information from patent applications with bibliographic data to shine light on the second process …

of the end of 1989. Self-citations, that is when the owner of a cited patent is the same as the owner of the citing … patent, are distinguished in this analysis. Results for the 1980 patents indicate that there is a definite and statistically …. Technological area of the patent appears to have little impact on localization, nor is there a large difference in knowledge flows …

We compare the geographic location of patent citations to those of the cited patents, as evidence of the extent to …