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Modelling the asymmetric volatility of anti-pollution patents in the USA
Journal article   Peer reviewed

Modelling the asymmetric volatility of anti-pollution patents in the USA

F. Chan, D. Marinova and M. McAleer
Scientometrics, Vol.59(2), pp.179-197
2004
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Abstract

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.

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Collaboration types
Domestic collaboration
Citation topics
6 Social Sciences
6.10 Economics
6.10.80 Market Interdependencies
Web Of Science research areas
Computer Science, Interdisciplinary Applications
Information Science & Library Science
ESI research areas
Social Sciences, general
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