Journal article
Same place, same knowledge - same people? The geography of non-patent citations in Dutch polymer patents



Publication Details
Authors:
Heinisch, D.; Nomaler, Ö.; Bünstorf, G.; Frenken, K.; Lintsen, H.
Publisher:
ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
Publication year:
2016
Journal:
Economics of Innovation and New Technology
Pages range:
553-572
Volume number:
25
Issue number:
6
Start page:
553
End page:
572
Number of pages:
20
ISSN:
1043-8599

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 2385 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.


Keywords
citation lags, knowledge spillovers, Non-patent literature, polymer industry, university-industry interaction

Last updated on 2019-25-07 at 18:55