Databases
Databases
Publication coverage: 1790 - present (updated weekly)
The USPTO's Patent Public Search system contains more than 11 million US patents issued from 1790 to the present and 7 million US published applications from 2001 forward. Full-text patents are searchable from 1976 forward. PDF documents and OCR text are available prior to 1976. Patent documents are classified under the Cooperative Patent Classification (CPC) and International Patent Classification (IPC) systems. New patents are issued weekly on Tuesdays; new applications are published on Thursdays.Publication coverage: 1907 - present; 100,000+ selected publications from the early 1800s through 1907.
SciFinder-n® is the world's most comprehensive source of information on chemical substances and technology. Produced by the Chemical Abstracts Service (CAS), a division of the American Chemical Society (ACS), SciFinder-n® provides access to chemical names, structures, properties, spectra, and reactions for more than 196 million organic and inorganic substances and approximately 70 million protein and nucleic acid sequences. SciFinder-n® covers 10,000+ current and historical journals, patents from 64 patent issuing authorities, and MEDLINE, the biomedical literature database. It also indexes selected books, conference proceedings, theses, reference works, technical reports, and preprints. As of 2022, SciFinder-n contains more than 57 million literature references dating back to the 1800s. Commercial chemical supplier and regulatory information is also available.Publication coverage: 1947 - present
This web portal, formerly known as SciTech Connect, contains more than 3 million references (445,000 full-text) to reports, articles, patents, datasets, presentations, software, and other scientific and technical information arising from research supported by the U.S. Department of Energy.Publication coverage: 1869 - present (updated weekly)
Produced by the Canadian Intellectual Property Office (CIPO), this database contains more than 2 million Canadian patents from 1869 to the present.Publication coverage: 1800s - present (varies by country; updated weekly)
The largest public patent database on the internet, Espacenet contains more than 100 million patent documents from more than 90 countries including Canada and the U.S., plus 2 million records for non-patent literature cited in EPO search reports.Publication coverage: 1800s - present (varies by country; updated weekly)
Explore 66 million patent documents from more than 51 regional and national patent offices. Major national collections include Canada, China, European Patent Office, Japan, Korea, Russia, U.K. and U.S. Advanced functions include chemical structure and biological sequence search; cross-lingual translation search; and national status information.