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- Title
SAO network analysis of patents for technology trends identification: a case study of polymer electrolyte membrane technology in proton exchange membrane fuel cells.
- Authors
Choi, Sungchul; Yoon, Janghyeok; Kim, Kwangsoo; Lee, Jae; Kim, Cheol-Han
- Abstract
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.
- Subjects
PATENTS; TECHNOLOGICAL innovations; PROTON exchange membrane fuel cells; TREND analysis; KEYWORDS; ACTOR-network theory
- Publication
Scientometrics, 2011, Vol 88, Issue 3, p863
- ISSN
0138-9130
- Publication type
Case Study
- DOI
10.1007/s11192-011-0420-z