caa a22 4500 445348844 CHVBK 20180317142837.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s11192-011-0420-z doi (NATIONALLICENCE)springer-10.1007/s11192-011-0420-z SAO network analysis of patents for technology trends identification: a case study of polymer electrolyte membrane technology in proton exchange membrane fuel cells [Elektronische Daten] [Sungchul Choi, Janghyeok Yoon, Kwangsoo Kim, Jae Lee, Cheol-Han Kim] This paper suggests a method for Subject-Action-Object (SAO) network analysis of patents for technology trends identification by using the concept of function. The proposed method solves the shortcoming of the keyword-based approach to identification of technology trends, i.e., that it cannot represent how technologies are used or for what purpose. The concept of function provides information on how a technology is used and how it interacts with other technologies; the keyword-based approach does not provide such information. The proposed method uses an SAO model and represents "key concept” instead of "key word”. We present a procedure that formulates an SAO network by using SAO models extracted from patent documents, and a method that applies actor network theory to analyze technology implications of the SAO network. To demonstrate the effectiveness of the SAO network this paper presents a case study of patents related to Polymer Electrolyte Membrane technology in Proton Exchange Membrane Fuel Cells. Akadémiai Kiadó, Budapest, Hungary, 2011 Technology Subject-Action-Object (SAO) nationallicence Function nationallicence Patent mining nationallicence Patent analysis nationallicence Technology trends analysis nationallicence Co-word analysis nationallicence Actor network theory nationallicence Choi Sungchul Department of Industrial and Management Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea aut Yoon Janghyeok Department of Industrial and Management Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea aut Kim Kwangsoo Department of Industrial and Management Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea aut Lee Jae Department of Industrial Engineering, Chonnam National University, Gwangju, Republic of Korea aut Kim Cheol-Han Department of IT Business Engineering, Daejon University, Daejon, Republic of Korea aut Scientometrics Springer Netherlands 88/3(2011-09-01), 863-883 0138-9130 88:3<863 2011 88 11192 https://doi.org/10.1007/s11192-011-0420-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11192-011-0420-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Choi Sungchul Department of Industrial and Management Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea aut NATIONALLICENCE 700 1- Yoon Janghyeok Department of Industrial and Management Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea aut NATIONALLICENCE 700 1- Kim Kwangsoo Department of Industrial and Management Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea aut NATIONALLICENCE 700 1- Lee Jae Department of Industrial Engineering, Chonnam National University, Gwangju, Republic of Korea aut NATIONALLICENCE 700 1- Kim Cheol-Han Department of IT Business Engineering, Daejon University, Daejon, Republic of Korea aut NATIONALLICENCE 773 0- Scientometrics Springer Netherlands 88/3(2011-09-01), 863-883 0138-9130 88:3<863 2011 88 11192 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer