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论文类型：期刊论文

发表时间：2011-09-01

发表刊物：SCIENTOMETRICS

收录刊物：SCIE、SSCI

卷号：88

期号：3

页面范围：761-770

ISSN号：0138-9130

关键字：Fortune 500; Patent bibliometrics; Patent co-citation; Technology structure

摘要：This paper provides an overview of the progression of technology structure based on patent co-citation networks. Methods of patent bibliometrics, social network analysis and information visualization are employed to analyze patents of Fortune 500 companies indexed in Derwent Innovations Index, the largest patent database in the world. Based on the co-citation networks, several main technology groups are identified, including Chemicals, Petroleum Refining, Motor Vehicles, Pharmaceuticals, Electronics, etc. Relationships among the leading companies and technology groups are also revealed.