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Knowledge Flows, Patent Citations and the Impact of Science on Technology

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Author Info
Verspagen, Bart () (Eindhoven University of Technology)
Nomaler, Onder () (Eindhoven University of Technology)

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Abstract

Technological innovation depends on knowledge developed by scientific research. The num-ber of citations made in patents to the scientific literature has been suggested as an indicator of this process of transfer of knowledge from science to technology. We provide an intersec-toral insight into this indicator, by breaking down patent citations into a sector-to-sector ma-trix of knowledge flows. We then propose a method to analyze this matrix and construct vari-ous indicators of science intensity of sectors, and the pervasiveness of knowledge flows. Our results indicate that the traditional measure of the number of citations to science literature per patent captures important aspects intersectoral knowledge flows, but that other aspects are not captured. In particular, we show that high science intensity implies that sectors are net suppli-ers of knowledge in the economic sector, but that science intensity does not say much about pervasiveness of either knowledge use or knowledge supply by sectors. We argue that these results are related to the specific and specialized nature of knowledge.

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File URL: http://www.merit.unu.edu/publications/wppdf/2007/wp2007-022.pdf
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Publisher Info
Paper provided by United Nations University, Maastricht Economic and social Research and training centre on Innovation and Technology in its series UNU-MERIT Working Paper Series with number 022.

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Date of creation: 2007
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Handle: RePEc:dgr:unumer:2007022

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Web page: http://www.merit.unu.edu

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Related research
Keywords: Knowledge; Input-Output Analysis; Knowledge Flow Matrices; Science-to-Technology Transfer; Patents;

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Find related papers by JEL classification:
D83 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Search, Learning, and Information
C67 - Mathematical and Quantitative Methods - - Mathematical Methods and Programming - - - Input-Output Models
O33 - Economic Development, Technological Change, and Growth - - Technological Change - - - Technological Change: Choices and Consequences; Diffusion Processes

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References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
  1. Verspagen, Bart, 1997. "Measuring Intersectoral Technology Spillovers: Estimates from the European and US Patent Office Databases," Economic Systems Research, Taylor and Francis Journals, vol. 9(1), pages 47-65, March.
  2. Dosi, Giovanni & Llerena, Patrick & Labini, Mauro Sylos, 2006. "The relationships between science, technologies and their industrial exploitation: An illustration through the myths and realities of the so-called `European Paradox'," Research Policy, Elsevier, vol. 35(10), pages 1450-1464, December. [Downloadable!] (restricted)
  3. Bronwyn H. Hall & Adam B. Jaffe & Manuel Trajtenberg, 2001. "The NBER Patent Citation Data File: Lessons, Insights and Methodological Tools," NBER Working Papers 8498, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  4. Jaffe, Adam B & Trajtenberg, Manuel & Henderson, Rebecca, 1993. "Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations," The Quarterly Journal of Economics, MIT Press, vol. 108(3), pages 577-98, August. [Downloadable!] (restricted)
    Other versions:
  5. Adam B. Jaffe & Manuel Trajtenberg, 2005. "Patents, Citations, and Innovations: A Window on the Knowledge Economy," MIT Press Books, The MIT Press, edition 1, volume 1, number 026260065x.
  6. Erik Dietzenbacher, 2005. "More on multipliers," Journal of Regional Science, Blackwell Publishing, vol. 45(2), pages 421-426. [Downloadable!] (restricted)
  7. Hicks, Diana & Breitzman, Tony & Olivastro, Dominic & Hamilton, Kimberly, 2001. "The changing composition of innovative activity in the US -- a portrait based on patent analysis," Research Policy, Elsevier, vol. 30(4), pages 681-703, April. [Downloadable!] (restricted)
  8. J. S·nchez-ChÛliz & R. Duarte, 2003. "Analysing pollution by way of vertically integrated coefficients, with an application to the water sector in Aragon," Cambridge Journal of Economics, Oxford University Press, vol. 27(3), pages 433-448, May.
  9. Johnson, Daniel & Evenson, Robert E, 1997. "Innovation and Invention in Canada," Economic Systems Research, Taylor and Francis Journals, vol. 9(2), pages 177-92, June.
  10. Maurseth, Per Botolf & Verspagen, Bart, 2002. " Knowledge Spillovers in Europe: A Patent Citations Analysis," Scandinavian Journal of Economics, Blackwell Publishing, vol. 104(4), pages 531-45, December. [Downloadable!] (restricted)
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Cited by:
(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

  1. Suma Athreye & Martha Prevezer, 2008. "R&D offshoring and the domestic science base in India and China," Working Papers 26, Queen Mary, University of London, School of Business and Management, Centre for Globalisation Research. [Downloadable!]
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