Patent citations and international knowledge flow: the cases of Korea and Taiwan
AbstractThis paper examines patterns of knowledge diffusion from US and Japan to Korea and Taiwan using patent citations as an indicator of knowledge flow. We estimate a knowledge diffusion model using a data set of all patents granted in the U.S. to inventors residing in these four countries. Explicitly modeling the roles of technology proximity and knowledge decay and knowledge diffusion over time, we have found that knowledge diffusion from US and Japan to Korea and Taiwan exhibits quite different patterns. It is much more likely for Korean patents to cite Japanese patents than US patents, whereas Taiwanese inventors tend to learn evenly from both US and Japanese inventors. The frequency of a Korean patent citing a Japanese patent is almost twice that of the frequency of a Taiwanese patent citing a Japanese patent. We also find that a patent is much more likely to cite a patent from its own technological field than from another field.
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Bibliographic InfoArticle provided by Elsevier in its journal International Journal of Industrial Organization.
Volume (Year): 21 (2003)
Issue (Month): 6 (June)
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Web page: http://www.elsevier.com/locate/inca/505551
Other versions of this item:
- Albert G.Z. Hu & Adam B. Jaffe, 2001. "Patent Citations and International Knowledge Flow: The Cases of Korea and Taiwan," NBER Working Papers 8528, National Bureau of Economic Research, Inc.
- O3 - Economic Development, Technological Change, and Growth - - Technological Change; Research and Development; Intellectual Property Rights
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