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Planes, Trains and Automobiles: The Importance of Location for Knowledge Transfer in the Transportation Sector

  • Jeffrey A. Moore
  • Daniel K. N. Johnson
  • Kristina M. Lybecker
Part of the Smart Innovation, Systems and Technologies book series (SIST, volume 18)

Abstract

Using over 200,000 U.S. patent citations, we test whether knowledge transfers in the transportation sector are sensitive to distance, and whether that sensitivity has changed over time. Controlling for self-citation by inventor, assignee and examiner, multivariate regression analysis shows that physical distance is becoming less important for spillovers with time, albeit in a nonlinear fashion.

Keywords

transportation patent citation spillover distance 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Jeffrey A. Moore
    • 1
  • Daniel K. N. Johnson
    • 2
  • Kristina M. Lybecker
    • 2
  1. 1.Colorado College’s Department of Economics and BusinessColorado SpringsUSA
  2. 2.Colorado CollegeColorado SpringsUSA

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