The Best Patent Web Sites
There is a lot of technical information only available in the patent literature. These databases lead you to published patents from many countries.
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Google PatentsFastest place to go for all U.S. patents and some U.S. patent applications. Contains descriptions and images in PDF and HTML.
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European Patent Office - esp@cenetEsp@cenet contains European patents, World patents, and patent applications. Ability to search patents by origin country (i.e. CN for China). Downloadable and printable in PDF.
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SciFinderSciFinder provides access to CAplus, a database of chemical literature and U.S. and foreign chemical-related patents, CASREACT, and the Registry database from Chemical Abstracts Service. Includes journal articles, book chapters, patents, conference proceedings, technical reports, substance database and dissertations covered in Chemical Abstracts as well as articles currently being indexed, book reviews and biographical information. Covers chemistry, biotechnology, agricultural chemistry, toxicology, environmental science, medicine, and food science, from 1907 to the present. Users may search more than 27 million citations by topic, author, CAS Registry Numbers, patent number, and CAS abstract number. More than 33 million chemical substances may be searched by chemical name, chemical structure, substructure, CAS Registry Numbers, and formula.
Copyright
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Copyright at CornellCopyright policies, resources, and services at Cornell
Engineering Librarian

Jill Powell
Contact:
103A Carpenter Hall
(remote 2020)
Engineering Library
Cornell University
Ithaca, NY 14853
jhp1@cornell.edu
engrref@cornell.edu
(remote 2020)
Engineering Library
Cornell University
Ithaca, NY 14853
jhp1@cornell.edu
engrref@cornell.edu
Subjects:Engineering