caa a22 4500 445348771 CHVBK 20180317142837.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s11192-011-0414-x doi (NATIONALLICENCE)springer-10.1007/s11192-011-0414-x Patent co-citation networks of Fortune 500 companies [Elektronische Daten] [Xianwen Wang, Xi Zhang, Shenmeng Xu] 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. Akadémiai Kiadó, Budapest, Hungary, 2011 Fortune 500 nationallicence Patent bibliometrics nationallicence Patent co-citation nationallicence Technology structure nationallicence Wang Xianwen WISE Lab, Dalian University of Technology, Dalian, China aut Zhang Xi WISE Lab, Dalian University of Technology, Dalian, China aut Xu Shenmeng WISE Lab, Dalian University of Technology, Dalian, China aut Scientometrics Springer Netherlands 88/3(2011-09-01), 761-770 0138-9130 88:3<761 2011 88 11192 https://doi.org/10.1007/s11192-011-0414-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11192-011-0414-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Xianwen WISE Lab, Dalian University of Technology, Dalian, China aut NATIONALLICENCE 700 1- Zhang Xi WISE Lab, Dalian University of Technology, Dalian, China aut NATIONALLICENCE 700 1- Xu Shenmeng WISE Lab, Dalian University of Technology, Dalian, China aut NATIONALLICENCE 773 0- Scientometrics Springer Netherlands 88/3(2011-09-01), 761-770 0138-9130 88:3<761 2011 88 11192 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer