Technological Specialization in International Patenting
Countries differ in their absolute and relative productivities in doing research across different technologies. They also differ in their propensity to adopt different technologies from abroad. Moreover, technologies may vary in their international mobility. We make use of new data on international patenting within different technologies to infer how countries specialize and which technologies are most mobile. We find countries to be much more specialized in their production than in their use of technologies, suggesting agglomeration effects in research. Innovations in chemistry and nucleonics are the most internationally mobile while those in agriculture and building are the least so.
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