Trend analysis of technology by using F-trem japanese patent and core technology clarification with Quality Function Deployment (QFD) approach

When a company develops technologies or products, it is important to obtain the trend of technology. It is necessary to obtain the trend of technology from macro and micro perspectives. In this case, patent information was used in both macro- and micro- perspectives. The core technologies of the companies are used to analyze the trend of technology from the micro perspective. The QFD approach is used as a method to identify the core technology of a company. From the core technology obtained by the QFD method, the patent classification codes are identified. The changes in technology were obtained by using the patent classification code.