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Technological and geographical proximity effects on knowledge spillovers: evidence from us patent citations

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Author Info

  • Luigi Aldieri

Abstract

The purpose of this paper is to investigate the pattern of knowledge flows as indicated by patent citations. In order to compute the technological proximity, we have followed the methodology developed by Jaffe (1986), where a technological vector is based on the distribution of patents of each firm across technology classes. As far as the geographic proximity is concerned, we have used the latitude and the longitude coordinates of the city in which each firm is located. The empirical results suggest that the effects of proximity variables on knowledge flows are rather differentiated.

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File URL: https://dipot.ulb.ac.be/dspace/bitstream/2013/13568/1/dul-0062.pdf
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Bibliographic Info

Paper provided by ULB -- Universite Libre de Bruxelles in its series DULBEA Working Papers with number 08-18.RS.

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Date of creation: Sep 2008
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Publication status: Published by: ULB, DULBEA
Handle: RePEc:dul:wpaper:08-18rs

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Web page: http://difusion.ulb.ac.be
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Related research

Keywords: Innovation; Knowledge Spillovers; Technology Transfer; Patent Citations.;

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Cited by:
  1. Oscar Bernal Diaz & Kim Oosterlinck & Ariane Szafarz, 2008. "Observing bailout expectations during a total eclipse of the sun," Working Papers CEB 08-015.RS, ULB -- Universite Libre de Bruxelles.
  2. Charles Plaigin, 2009. "Exploratory study on the presence of cultural and institutional growth spillovers," DULBEA Working Papers 09-03.RS, ULB -- Universite Libre de Bruxelles.
  3. Pierre-Guillaume Méon & Ariane Szafarz, 2008. "Labour market discrimination as an agency cost," Working Papers CEB 08-019.RS, ULB -- Universite Libre de Bruxelles.
  4. Aldieri, Luigi, 2011. "Knowledge spillovers and productivity in Italian manufacturing firms," MPRA Paper 35018, University Library of Munich, Germany.

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