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

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  • onder Nomaler
  • Bart Verspagen

Abstract

Technological innovation depends on knowledge developed by scientific research. The number 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 intersectoral insight into this indicator, by breaking down patent citations into a sector-to-sector matrix of knowledge flows. We then propose a method to analyze this matrix and construct various 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 of intersectoral knowledge flows, but that other aspects are not captured. In particular, we show that high science intensity implies that sectors are net suppliers 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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Bibliographic Info

Article provided by Taylor and Francis Journals in its journal Economic Systems Research.

Volume (Year): 20 (2008)
Issue (Month): 4 ()
Pages: 339-366
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Handle: RePEc:taf:ecsysr:v:20:y:2008:i:4:p:339-366

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Related research

Keywords: Knowledge input-output analysis; knowledge flow matrices; science-to-technology transfer;

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References

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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," Open Access publications from Maastricht University urn:nbn:nl:ui:27-18044, Maastricht University.
  2. Hall, B. & Jaffe, A. & Trajtenberg, M., 2001. "The NBER Patent Citations Data File: Lessons, Insights and Methodological Tools," Papers 2001-29, Tel Aviv.
  3. Maurseth, Per Botolf & Verspagen, Bart, 2002. "Knowledge spillovers in Europe: a patent citations analysis," Open Access publications from Maastricht University urn:nbn:nl:ui:27-18031, Maastricht University.
  4. 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.
  5. Jaffe, A.B. & Trajtenberg, M., 1992. "Geographic Localization of Knowledge Spillovers as Evidenced by Patent Citations," Papers 14-92, Tel Aviv.
  6. 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.
  7. 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.
  8. Daniel Johnson & Robert Evenson, 1997. "Innovation and Invention in Canada," Economic Systems Research, Taylor and Francis Journals, vol. 9(2), pages 177-192.
  9. Erik Dietzenbacher, 2005. "More on multipliers," Journal of Regional Science, Wiley Blackwell, vol. 45(2), pages 421-426.
  10. 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.
  11. Wesley M. Cohen & Richard R. Nelson & John P. Walsh, 2002. "Links and Impacts: The Influence of Public Research on Industrial R&D," Management Science, INFORMS, vol. 48(1), pages 1-23, January.
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Citations

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Cited by:
  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.

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