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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Paper provided by Université libre de Bruxelles, Department of Applied Economics (DULBEA) in its series Working Papers DULBEA with number
08-18.RS.
Find related papers by JEL classification: F1 - International Economics - - Trade F2 - International Economics - - International Factor Movements and International Business O3 - Economic Development, Technological Change, and Growth - - Technological Change
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