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Inter-State Dynamics of Invention Activities, 1930-2000

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  • Catherine Co

    ()
    (University of Nebraska at Omaha)

  • John Landon-Lane

    ()
    (Rutgers University)

  • Myeong-Su Yun

    ()
    (Tulane University)

Abstract

We study the dynamics of the cross-section distribution of patents per capita for the 48 continental U.S. states from 1930 to 2000 using a discrete-state Markov chain. We test for and find evidence in favor of the (knowledge) convergence hypothesis as we find that the distribution of patents is converging to a limiting distribution that is significantly more concentrated than its initial distribution. States in the extreme are more mobile and are more likely to move to the middle than states in the middle of the cross-sectional distribution and the rate of convergence to the limiting distribution is ``slow.''

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Bibliographic Info

Paper provided by Rutgers University, Department of Economics in its series Departmental Working Papers with number 200511.

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Date of creation: 15 Nov 2005
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Handle: RePEc:rut:rutres:200511

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Keywords: Patent; US States; Convergence;

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  1. Samuel Kortum & Josh Lerner, 1997. "Stronger Protection or Technological Revolution: What is Behind the Recent Surge in Patenting?," NBER Working Papers 6204, National Bureau of Economic Research, Inc.
  2. Kenneth L. Sokoloff, 1988. "Inventive Activity in Early Industrial America: Evidence From Patent Records, 1790-1846," UCLA Economics Working Papers 499, UCLA Department of Economics.
  3. Carlino, Gerald A. & Mills, Leonard O., 1993. "Are U.S. regional incomes converging? : A time series analysis," Journal of Monetary Economics, Elsevier, vol. 32(2), pages 335-346, November.
  4. Moshe Buchinsky & Jennifer Hunt, 1996. "Wage Mobility in the United States," NBER Working Papers 5455, National Bureau of Economic Research, Inc.
  5. Popp David & Juhl Ted & Johnson Daniel K.N., 2004. "Time In Purgatory: Examining the Grant Lag for U.S. Patent Applications," The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 4(1), pages 1-45, November.
  6. Catherine Co & Mark Wohar, 2004. "Technological convergence among US regions and states," Economics of Innovation and New Technology, Taylor & Francis Journals, vol. 13(2), pages 101-126.
  7. Quah, Danny, 1993. "Galton's Fallacy and Tests of the Convergence Hypothesis," CEPR Discussion Papers 820, C.E.P.R. Discussion Papers.
  8. Audretsch, David B & Feldman, Maryann P, 1996. "R&D Spillovers and the Geography of Innovation and Production," American Economic Review, American Economic Association, vol. 86(3), pages 630-40, June.
  9. Hall, Bronwyn H & Griliches, Zvi & Hausman, Jerry A, 1986. "Patents and R and D: Is There a Lag?," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 27(2), pages 265-83, June.
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Cited by:
  1. Gauthier-Loiselle, Marjolaine & Hunt, Jennifer, 2009. "How Much Does Immigration Boost Innovation?," CEPR Discussion Papers 7116, C.E.P.R. Discussion Papers.

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