Inter-firm Technological Proximity and Knowledge Spillovers

Koki Oikawa

Public Policy Review, 2017, vol. 13, issue 3, 305-324

Abstract: This paper has two objectives. One is to survey previous studies concerning indicators of technological proximity and distance to identify technological relationships between firms, particularly in terms of spillovers of technology and knowledge. The other objective is to reexamine the spillover effect in research and development by combining the traditional technological proximity with a measurement of within-field technological relationships, which is based on patent citation overlaps. I find that the average technological proximity is increasing over these three decades in the United States and within-field technological proximity shows sizable variations, and that the spillover effect is underestimated unless the changes in within-field proximities are taken into account.

Keywords: Knowledge spillover; technological proximity; patent (search for similar items in EconPapers)
JEL-codes: O32 O34 (search for similar items in EconPapers)
Date: 2017
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Citations: View citations in EconPapers (1)

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