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The Healing Arts: Analysis of the Knowledge Flows between Successive Generations of Innovation in the Pharmaceutical Sector

Colorado College Working Paper No. 2012-08

8 Pages Posted: 24 May 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: May 2012

Abstract

This paper examines the location of innovations within pharmaceutical technology, using U.S. patent citation data to trace the knowledge flows over time. It is clear that knowledge clustering is certainly present. Our study utilizes multivariate left-censored Tobit regression analysis to control for identifiable factors, to examine whether over time the distance between successive innovators has changed. We find the distance to be increasing significantly over time, both when considering all citations and only inter-city transfers.

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

JEL Classification: L69, R3, L2, Q55

Suggested Citation

Johnson, Daniel K. N. and Moore, Jeff and Lybecker, Kristina M., The Healing Arts: Analysis of the Knowledge Flows between Successive Generations of Innovation in the Pharmaceutical Sector (May 2012). Colorado College Working Paper No. 2012-08 . Available at SSRN: https://ssrn.com/abstract=2065462 or http://dx.doi.org/10.2139/ssrn.2065462

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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