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Ain't No Sunshine When You're Gone: Analysis of the Knowledge Flows between Successive Generations of Solar Innovations

Colorado College Working Paper No. 2012-09

8 Pages Posted: 10 Jun 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: June 10, 2012

Abstract

This paper examines the location of innovations within solar technology, using U.S. patent citation data to trace their diffusion over time. Knowledge clustering is clearly present. We employ multivariate left-censored Tobit regression analysis to control for identifiable factors, to examine whether the distance between successive innovators has changed over time. We find the distance to be increasing slightly over time, both when considering all citations and only inter-city transfers.

Keywords: Solar Technology, Patents, Knowledge Clustering, Left-censored Tobit

JEL Classification: L99, R3, L2, Q55

Suggested Citation

Johnson, Daniel K. N. and Moore, Jeff and Lybecker, Kristina M., Ain't No Sunshine When You're Gone: Analysis of the Knowledge Flows between Successive Generations of Solar Innovations (June 10, 2012). Colorado College Working Paper No. 2012-09. Available at SSRN: https://ssrn.com/abstract=2080906 or http://dx.doi.org/10.2139/ssrn.2080906

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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