Use the advanced inspection in the "Patent Search" module of the website of the Intellectual Property Office of the People's Republic of China.

Search is more accurate. According to the related information query, we know that the patent retrieval modules of People's Republic of China (PRC) and China National Intellectual Property Administration websites provide different retrieval methods, among which advanced retrieval can find the patent information you need more accurately. China National Intellectual Property Administration website provides national patent inquiry service. Users can enter information such as patent name, classification number, applicant, WeChat official account and so on.