1. China National Intellectual Property Administration Patent Network: This website is one of the largest patent databases in the world, providing services such as patent inquiry, retrieval, download, transfer and publication at home and abroad. Through this website, users can query related patent information at home and abroad, including patent name, patent applicant, patent thumbnail, patent abstract and so on.
2. China Patent Network: This website is a website launched by China National Intellectual Property Administration, China, which is specially used to inquire about domestic patent information. Through this website, users can query all patent information applied by patent applicants in China, including patent name, patent type, patent number, publication date and application date. In addition, the website also provides relevant laws, policies, regulations and announcements.
3. Google Patent: This search engine is a search engine launched by Google Company, which is specially used to query global patent information. Through this search engine, users can query patent information from all over the world, including those from the United States, Europe, Japan, South Korea and other countries. In addition, the search engine also provides advanced query function, which can query related patent information according to keywords, patent type, patent status, applicant and other filtering conditions.
4.SciFinder: This website is a chemical information retrieval website under China Academy of Sciences, which contains one of the largest chemical literature databases in the world, covering full-text literature and patent information in chemistry, chemical engineering, chemical information and related fields. Through this website, users can query patent information from all over the world, such as patent name, patent type, patentee, patent publication date, patent abstract, and related scientific research and academic information.
5. Derwent Innovations Index: This search engine is a search engine launched by Thomson Technology Company, which is specially used to query global patent information. The search engine covers the patent information of more than 0/00 countries and regions in the world, including patent name, patent legal status, patentee, patent publication date, patent abstract, applicant, etc. In addition, the search engine also provides advanced functions such as classified retrieval, citation retrieval, patent subject navigation, patent trend analysis and so on.
6. Patent lens: Is this website American? Fuller has launched a website dedicated to searching global patent information. This website provides patent information inquiry service for countries and regions all over the world, including patent name, patentee, patent abstract, etc. In addition, the website also provides a variety of advanced query functions, such as patent family query, legal status change, literature citation and so on.
7. Other patent inquiry websites: In addition to the above-mentioned patent inquiry websites, there are many websites dedicated to inquiring global patent information, such as EPO, WIPO, PatentScope, etc. Users can choose the corresponding patent inquiry website for inquiry according to their own needs.
These websites provide different patent inquiry services, and users can choose the appropriate website to inquire relevant patent information according to their own needs.