The relationship of science, technology, and industry are complicated and vary according to time; therefore, it is difficult to combine the three categories into a single model. However, the linking of science, technology, and industry (divided according to their respective classification standards) is an opportunity to understand how science and technology, technology and industry, and science, technology, and industry are interrelated. This article examines the methodology to link science, technology, and industry that proposes a concrete model to analyse science, technology, and industry in an integrated manner. This study formulates an empirical study of trend analysis for technological innovation through a linkage structure of the knowledge flow of science, technology, and industry based on classification linkage and an analytic framework that utilizes scientific papers and patents. This article uses citation analysis to analyse knowledge flow (such as absorption and the utilization of given knowledge) that looks at the provision of knowledge to create new knowledge as well as examines the use of network analysis to analyse the complicated phenomenon of knowledge flow.