The Impact of Gravity-Weighted Knowledge Spillovers on Productivity in Manufacturing

Carol Robbins ()

The Journal of Technology Transfer, 2006, vol. 31, issue 1, 45-60

Abstract: This paper tests for localized knowledge spillovers from out-of-state innovations in U.S. manufacturing from 1977 to 1997. The source of these spillovers is innovations categorized into six technologies based on U.S. patent classes and patent data. Using a gravity-weighting for out-of-state innovations, knowledge spillovers are found from mechanical technologies and drug and medical technologies for a broad group of manufacturing industries. Innovations from chemical-related technologies are found to generate spillovers for the Chemical and Allied Products Industry and for the Transportation Equipment Industry. Additionally, specialization of production at the two-digit Standard Industrial Classification of industry level is also found to increase state-level productivity in manufacturing. Copyright Springer Science+Business Media, Inc. 2006

Keywords: innovation; regions; cities; knowledge-intensive services; O3; R1 (search for similar items in EconPapers)
Date: 2006
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Citations: View citations in EconPapers (19)

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Persistent link: https://EconPapers.repec.org/RePEc:kap:jtecht:v:31:y:2006:i:1:p:45-60

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DOI: 10.1007/s10961-005-5012-8

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