INVESTIGATION OF TECHNOLOGY DEVELOPMENT PROCESS BASED ON PATENT INFORMATION: Surface Impregnation Method for Solving Chloride Attack of Concrete

Each time a new problem has arisen in the concrete field, solutions have been sought. Although the process of dealing with such problems has been documented in the historical timelines of academic societies, the efforts of companies have not been covered. Therefore, we will use patent information to examine technological transitions, including the efforts of companies.This study investigates one of the technologies for solving chloride attack of concrete from a microscopic point of view, using the citation relationship of patents. This will provide basic data to clarify one specific transition in surface impregnation method and inspire the new developments.