基于专利共被引的世界500强企业技术竞争的专利地图分析

Patent citations are generally used to provide support for specific statements of technology competition, when patentometrics has become one kind of main method to analyze competitive technical intelligence for companies. In this paper, the author choose Fortune 500 enterprises, released in 2009, as research objects. Using patent data (2000-2009) from Derwent Innovation Index, employing full network methods in social network analysis, the authors construct the global patent co-citation matrix of Fortune 500 companies based on the patent forward citation, and conduct patent mapping analysis using information visualization technology and social network analysis method, including clustering distribution, Kernel density, and co-citation network analysis, to study the technology clusters, technology competition structure of Fortune 500, and to find the pivotal enterprises in the technology competition network.