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  • 1 Department of Economics, University of Western Australia Crawley, WA (Australia)
  • | 2 Institute for Sustainability and Technology Policy, Murdoch University Murdoch, WA, 6150, Australia
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The paper analyses the asymmetric volatility of patents related to pollution prevention and abatement (hereafter, anti-pollution) technologies registered in the USA. Ecological and pollution prevention technology patents have increased steadily over time, with the 1990's having been a period of intensive patenting of technologies related to the environment. The time-varying nature of the volatility of anti-pollution technology patents registered in the USA is examined using monthly data from the US Patent and Trademark Office for the period January 1975 to December 1999. Alternative symmetric and asymmetric volatility models, such as GARCH, GJR and EGARCH, are estimated and tested against each other using full sample and rolling windows estimation.

  • Berndt, E. K. Hall, B. H. Hall, R. E. Hausman, J. A. 1974 Estimation and inference in nonlinear structural models Annals of Economic and Social Measurement 3 653665.

    • Search Google Scholar
    • Export Citation
  • Boussama, F. 2000 Asymptotic normality for the quasi-maximum likelihood estimator of a GARCH model Comptes Rendus de l'Académie des Sciences 331 8184.

    • Search Google Scholar
    • Export Citation
  • Bollerslev, T. 1986 Generalized autoregressive conditional heteroskedasticity Journal of Econometrics 31 307327.

  • Bollerslev, T. Wooldridge, J. M. 1992 Quasi-maximum likelihood estimation and inference in dynamic models with time-varying covariances Econometric Reviews 11 143173.

    • Search Google Scholar
    • Export Citation
  • Dunn, S. Peterson, J. A. (eds.) 2001 Hydrogen Futures: Towards a Sustainable Energy System Worldwatch Institute Washington DC.

  • Elie, L. Jeantheau, T. 1995 Consistency in heteroskedastic models Comptes Rendus de l'Académie des Sciences 320 12551258.

  • Engle, R. F. 1982 Autoregressive conditional heteroskedasticity with estimates of the variance of United Kingdom inflation Econometrica 50 9871007.

    • Search Google Scholar
    • Export Citation
  • Glosten, L. Jagannathan, R. Runkle, D. 1992 On the relation between the expected value and volatility of nominal excess returns on stocks Journal of Finance 46 17791801.

    • Search Google Scholar
    • Export Citation
  • Jeantheau, T. 1998 Strong consistency of estimators for multivariate ARCH models Econometric Theory 14 7086.

  • Ling, S. Li, W. K. 1997 On fractionally integrated autoregressive moving-average models with conditional heteroskedasticity Journal of the American Statistical Association 92 11841194.

    • Search Google Scholar
    • Export Citation
  • Ling, S. McAleer, M. 2000 Testing GARCH versus E-GARCH Chan, W.-S. Li, W. K. Tong, H. (eds.) Statistics and Finance: An Interface Imperial College Press London 226242.

    • Search Google Scholar
    • Export Citation
  • Ling, S. McAleer, M. 2002 Necessary and sufficient moment conditions for the GARCH(r,s) and asymmetric power GARCH(r,s) models Econometric Theory 18 722729.

    • Search Google Scholar
    • Export Citation
  • Ling, S. McAleer, M. 2002 Stationarity and the existence of moments of a family of GARCH processes Journal of Econometrics 106 109117.

    • Search Google Scholar
    • Export Citation
  • Ling, S. McAleer, M. 2003 Asymptotic theory for a vector ARMA-GARCH model Econometric Theory 19 278308.

  • Marinova, D. McAleer, M. 2003 Nanotechnology strength indicators: International rankings based on US Patents Nanotechnology 14 R1R7.

    • Search Google Scholar
    • Export Citation
  • Marinova, D. McAleer, M. 2003 Modelling trends and volatility in ecological patents in the USA Environmental Modelling and Software 18 3 195203.

    • Search Google Scholar
    • Export Citation
  • McAleer, M., Chan, F., Marinova, D. (to appear), An econometric analysis of asymmetric volatility: Theory and application to patents, paper presented to the Australasian Meeting of the Econometric Society, Brisbane, July 2002, Journal of Econometrics.

    • Search Google Scholar
    • Export Citation
  • Nelson, D. B. 1991 Conditional heteroskedasticity in asset returns: A new approach Econometrica 59 347370.

  • Phillips, P. C. B. Perron, P. 1988 Testing for a unit root in time series regression Biometrika 75 2 335346.

  • Shephard, N. 1996 Statistical aspects of ARCH and stochastic volatility Barndorff-Nielsen, O. E. Cox, D. R. Hinkley, D. V. (eds.) Statistical Models in Econometrics, Finance and Other Fields Chapman & Hall London 167.

    • Search Google Scholar
    • Export Citation
  • World Bank (2001), Making Sustainable Commitments: An Environment Strategy for the World Bank, Washington DC.