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International Knowledge Flows: Evidence from Patent Citation

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Author Info
Jaffe, A.B.
Trajtenberg, M.

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Abstract

This paper explores the patterns of citations among patents taken out by inventors in the U.S., the U.K., France, Germany and Japan. We find that, (1) Patets assigned to the same firm are more likely to cit each other, and come sooner that other citations; (2) patents in the same patent class are approximately 100 times as likely to cite each other as patents from different patent classes, but there is not a strong time pattern to this effect; (3) patents whose investors reside in the same country are typically 30 to 80% more likely to cite each other than inventors from other countries, and these, and these citations come sooner, and (4) there are clear country-specific citation tendencies, e.g., Japanese citations typically come sooner than those of other countries.

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Publisher Info
Paper provided by Tel Aviv in its series Papers with number 11-98.

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Length: 37 pages
Date of creation: 1998
Date of revision:
Handle: RePEc:fth:teavfo:11-98

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Related research
Keywords: PATENTS ; CITATIONS ; SPILLOVERS;

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Find related papers by JEL classification:
O30 - Economic Development, Technological Change, and Growth - - Technological Change - - - General
O31 - Economic Development, Technological Change, and Growth - - Technological Change - - - Innovation and Invention: Processes and Incentives

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. Ricardo J. Caballero & Adam B. Jaffe, 1993. "How High are the Giants' Shoulders: An Empirical Assessment of Knowledge Spillovers and Creative Destruction in a Model of Economic Growth," NBER Working Papers 4370, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  2. Griliches, Zvi, 1990. "Patent Statistics as Economic Indicators: A Survey," Journal of Economic Literature, American Economic Association, vol. 28(4), pages 1661-1707, December. [Downloadable!] (restricted)
    Other versions:
  3. Park, Walter G, 1995. "International R&D Spillovers and OECD Economic Growth," Economic Inquiry, Oxford University Press, vol. 33(4), pages 571-91, October.
  4. Jaffe, Adam B, 1986. "Technological Opportunity and Spillovers of R&D: Evidence from Firms' Patents, Profits, and Market Value," American Economic Review, American Economic Association, vol. 76(5), pages 984-1001, December. [Downloadable!] (restricted)
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  5. repec:fth:harver:1473 is not listed on IDEAS
  6. Jaffe, Adam B & Fogarty, Michael S & Banks, Bruce A, 1998. "Evidence from Patents and Patent Citations on the Impact of NASA and Other Federal Labs on Commercial Innovation," Journal of Industrial Economics, Blackwell Publishing, vol. 46(2), pages 183-205, June. [Downloadable!] (restricted)
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  7. Eaton, Jonathan & Kortum, Samuel, 1996. "Trade in ideas Patenting and productivity in the OECD," Journal of International Economics, Elsevier, vol. 40(3-4), pages 251-278, May. [Downloadable!] (restricted)
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  8. Coe, David T. & Helpman, Elhanan, 1995. "International R&D spillovers," European Economic Review, Elsevier, vol. 39(5), pages 859-887, May. [Downloadable!] (restricted)
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  9. Gene M. Grossman & Elhanan Helpman, 1991. "Quality Ladders in the Theory of Growth," NBER Working Papers 3099, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  10. Romer, Paul M, 1990. "Endogenous Technological Change," Journal of Political Economy, University of Chicago Press, vol. 98(5), pages S71-102, October. [Downloadable!] (restricted)
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  11. Teece, David J, 1977. "Technology Transfer by Multinational Firms: The Resource Cost of Transferring Technological Know-how," Economic Journal, Royal Economic Society, vol. 87(346), pages 242-61, June. [Downloadable!] (restricted)
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