2009
DOI: 10.1080/10438590801969073
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Mapping technological trajectories as patent citation networks. An application to data communication standards

Abstract: We use patent citation networks to study the dynamics of technical change in Ethernet, a standard for data communication. We first consider the evolution of the broad technological system of local area networks (LANs) and we identify the most significant inventions within the specific subfield of Ethernet. Then we analyse the structure of connectivity of patent citation networks to reconstruct the main technological trajectories in this subfield. Our results suggest that these technological trajectories are ch… Show more

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Cited by 154 publications
(95 citation statements)
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“…So, patent citation has been used to analyze the significance of a patent for technological innovation or R&D strategy [22]. To understand the patent citation results efficiently, we can consider visualization of patents.…”
Section: Patent Citation Networkmentioning
confidence: 99%
“…So, patent citation has been used to analyze the significance of a patent for technological innovation or R&D strategy [22]. To understand the patent citation results efficiently, we can consider visualization of patents.…”
Section: Patent Citation Networkmentioning
confidence: 99%
“…A substantial stream of more positivistic research in the fields of industrial economics and sciencometrics is based on patent data as an approximation for technological development. Research so far mostly incorporates patent data as aggregated numbers to explain differences in scale [24], or in a network representation to explain structural differences [9,25] in the development of technologies across countries and industries. Patent data has also been used to study invention as a recombination process [3,4,26].…”
Section: Measurement Of Technological Change -State Of the Artmentioning
confidence: 99%
“…En cualquier caso, sí que existe acuerdo en interpretar la presencia de las ramas que se fusionan en una patente estratégica del camino principal como un signo de convergencia de conocimientos distintos (Verspagen, 2007;Fontana et al, 2009). Sin embargo, respecto a las ramas divergentes tal acuerdo no es unánime.…”
Section: El Operador Hibridación Y El Operador Fragmentación' En El Aunclassified
“…En el capítulo 4 de esta tesis aplicaremos estas métricas a la Red de Caminos Superiores que construiremos a partir de nuestra base de datos. Compararemos nuestros resultados con los obtenidos a partir de los datos presentados en Fontana et al (2009), el único trabajo en el que se muestran algunos de los intervalos i de construcción de la Red de Caminos Superiores. Fontana et al (2009) sólo proporcionan información en 5 intervalos, mientras que nuestras medidas constan de 16 intervalos.…”
Section: Las Medidas De Truncamiento En Las Patentes Estratégicas DIVunclassified
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