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Where are the Eco-Innovators? Analysis of the Knowledge Flows between Successive Generations of Green Technology Innovations

Colorado College Working Paper 2012-02

7 Pages Posted: 19 Mar 2012  

Daniel K. N. Johnson

Colorado College - Department of Economics and Business

Jeff Moore

Colorado College - Department of Economics and Business

Kristina M. Lybecker

Colorado College - Department of Economics & Business

Date Written: March 2012

Abstract

This paper examines the location of innovations within green technology, using U.S. patent citation data to trace their inter-generational knowledge flows over time. Clustering is clearly evident, and we use multivariate left-censored Tobit regression analysis to control for identifiable factors, to show that the distance between successive innovators has not been rising over time. The interesting exception is nuclear energy in which distance appears to be decreasing over time. If we consider only inter-city transfers, the waste management also becomes more concentrated over time, while transportation declusters.

Keywords: Geographical Clustering, Patents, Knowledge Flows, Patents, Green Technology

JEL Classification: Q55, L9, L2.

Suggested Citation

Johnson, Daniel K. N. and Moore, Jeff and Lybecker, Kristina M., Where are the Eco-Innovators? Analysis of the Knowledge Flows between Successive Generations of Green Technology Innovations (March 2012). Colorado College Working Paper 2012-02. Available at SSRN: https://ssrn.com/abstract=2025625 or http://dx.doi.org/10.2139/ssrn.2025625

Daniel Kent Neil Johnson (Contact Author)

Colorado College - Department of Economics and Business ( email )

14 E Cache La Poudre Street
Colorado Springs, CO 80903
United States
719-389-6654 (Phone)
719-389-6927 (Fax)

HOME PAGE: http://faculty1.coloradocollege.edu/~djohnson

Jeff Moore

Colorado College - Department of Economics and Business ( email )

14 E Cache La Poudre Street
Colorado Springs, CO 80903
United States

Kristina M. Lybecker

Colorado College - Department of Economics & Business ( email )

14 E Cache La Poudre Street
Colorado Springs, CO 80903
United States
719-389-6445 (Phone)
719-389-6927 (Fax)

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