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Trends and volatility in Japanese patenting in the USA: An analysis of the electronics and transport industries

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Abstract

This paper analyses trends and volatility in patenting in USA by Japan in the electronics/electrical and motor vehicle/transport epuiqment industries. The number of patents has increased steadily, with the two industries accounting in 1997 for one-half of Japanese patents in USA. The electronics/electrical industry has been a much stronger performer, with a share of 30% of US patents, compared with 20% for motor vehicle/transport epuiqment. Using monthly data for 1975-1997, the time-varying nature of the volatility of patents registered in the USA is examined. The asymmetric AR(1)-GJR(1,1) model is found to be suitable for motor vehicle/transport epuiqment, whereas the AR(1)-GARCH(1,1) and AR(1)-GJR(1,1) models provide interesting results for electronics/electrical.

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Authors and Affiliations

  1. ISTP, Murdoch University, Murdoch, WA, 6150, Australia

    Dora Marinova

  2. Department of Economics, University of Western Australia, Australia

    Michael McAleer

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  1. Dora Marinova
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  2. Michael McAleer
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Marinova, D., McAleer, M. Trends and volatility in Japanese patenting in the USA: An analysis of the electronics and transport industries. Scientometrics 55, 171–187 (2002). https://doi.org/10.1023/A:1019611623033

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