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General Patent Search Resources
US Patent & Trademark Office - Patent Fulltext Database
Covers US patents issued from 1790 to the most recent weekly issue date. See https://www.uspto.gov/patents-application-process/search-patents for important notes on searching this database.
European Patent Office (Espacenet PatentSearch)
European, US, PCT, Japanese and other worldwide patents.
Covers patents and applications from USPTO, EPO, WIPO, DPMA, CIPO and SIPO. Updating frequency is not clear.
Canadian Intellectual Property Office - Canadian Patent Search
A Canadian Patent database with data from 1989 to the present, and includes the patent number, classification, and title of patents.
Japan Platform for Patent Information
A searchable database of Japanese patent abstracts, which includes the patent number, title, inventor, company, and abstract of the patent.
A user-friendly interface for searching patents from European, U.S., WIPO, and Australia.
People's Republic of China: National Intellectual Property Office (CNIPA)
Search for Chines patent. Covers patents from China. Has machines translation system integrated.
Chemistry and Chemical Engineering Patent Search Resources
SciFinder (first-time users see Registration)
SciFinder is a means of accessing the Chemical Abstracts database using a powerful and intuitive search engine to find references to articles. Search for chemical data using a molecular formula, chemical name, chemical structure, reaction components, author name, or topic of interest.
Note: Database use restricted to current Mines-affiliates only and requires an individual user account to access. First-time users, please register with a Mines email address through this link at http://libguides.mines.edu/scifinder_reg