Mapping Technological Trajectories as Patent Citation Networks. A Study on the History of Fuel Cell Research
Verspagen, Bart (2005). Mapping Technological Trajectories as Patent Citation Networks. A Study on the History of Fuel Cell Research. UNU-MERIT Research Memoranda. UNU-MERIT.
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Sub-type Working paper Author Verspagen, Bart Title Mapping Technological Trajectories as Patent Citation Networks. A Study on the History of Fuel Cell Research Series Title UNU-MERIT Research Memoranda Volume/Issue No. 20 Publication Date 2005 Publisher UNU-MERIT Language eng Abstract Technological change is argued to be taking place along ordered and selective pat-terns, shaped jointly by technological and scientific principles, and economic and other societal factors. Historical, descriptive analysis is often used to analyze these 'trajectories'. Recently, quantitative methods have been proposed to map these tra-jectories. It is argued that such methods have, so far, not been able to illuminate the engineering side of technological trajectories. In order to fill this gap, a methodology proposed by Hummon and Doreian (1989) is used and extended to undertake a cita-tion analysis of patents in the field of fuel cells. Keyword Patent citations
Technological trajectories
History of fuel cell researchCopyright Year 2005 Copyright type All rights reserved -
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