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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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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. Moshe Buchinsky & Jennifer Hunt, 1999. "Wage Mobility In The United States," The Review of Economics and Statistics, MIT Press, vol. 81(3), pages 351-368, August.
  2. Kortum, Samuel & Lerner, Josh, 1998. "Stronger protection or technological revolution: what is behind the recent surge in patenting?," Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 48(1), pages 247-304, June.
  3. David Popp & Ted Juhl & Daniel K.N. Johnson, 2004. "Time In Purgatory: Examining the Grant Lag for U.S. Patent Applications," The B.E. Journal of Economic Analysis & Policy, Berkeley Electronic Press, vol. 0(1), pages 29.
  4. 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.
  5. Quah, Danny, 1993. "Galton's Fallacy and Tests of the Convergence Hypothesis," CEPR Discussion Papers 820, C.E.P.R. Discussion Papers.
  6. 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.
  7. Catherine Co & Mark Wohar, 2004. "Technological convergence among US regions and states," Economics of Innovation and New Technology, Taylor and Francis Journals, vol. 13(2), pages 101-126.
  8. 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.
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