Please use this identifier to cite or link to this item: http://hdl.handle.net/10419/121312
Authors: 
Heinisch, Dominik
Nomaler, Önder
Buenstorf, Guido
Franken, Koen
Lintsen, Harry
Year of Publication: 
2015
Series/Report no.: 
Joint Discussion Paper Series in Economics 27-2015
Abstract: 
It has long been argued that geographic co-location supports knowledge spillovers. More recently, this argument has been challenged by showing that knowledge spillovers mainly flow through social networks, which may or may not be localized at various geographic scales. We further scrutinize the conjecture of geographically bounded knowledge spillovers by focusing on knowledge flows between academia and industry. Looking into citations to non-patent literature (NPL) in 2,385 Dutch polymer patents, we find that citation lags are shorter on average if Dutch rather than foreign NPLs are cited. However, when excluding individual and organizational self-citations, geographically proximate NPLs no longer diffuse faster than foreign NPLs. This suggests that knowledge is not "in the air" but transferred by mobile individuals and/or direct university-industry collaboration. Our findings moreover suggest an important role of international conferences in the diffusion of recent scientific knowledge.
Subjects: 
non-patent literature
citation lags
knowledge spillovers
university-industry interaction
polymer industry
JEL: 
O33
R10
L65
Document Type: 
Working Paper

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