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Patent Searching: Home

This guide to patent searching lists relevant databases to finding US, World, and European patents.

The Best Patent Web Sites

Cornell Patent Office

Questions?

Free Patent Databases

Patent Searching Prior to 1976

Prior to 1976 patents searching is a bit complicated. While full-text should be available in Google Patents, some has been scanned with OCR - optical character recognition - and there are numerous spelling errors. The print indexes below may be helpful in these cases:

Engineering Librarian

Jill Powell
Contact:
103A Carpenter Hall
Engineering Library
Cornell University
Ithaca, NY 14853
jhp1@cornell.edu
engrref@cornell.edu
607-255-8701
Subjects:Engineering