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Patents: Other Patent Websites (not affiliated with USPTO)

Information on how to find and access existing patents.

Additional U. S. patent search engines

  • Google Patents
    Google's beta US patent search site.
    Free patent printing site (US only)
  • Free Patents Online
    Full text of U.S. patents back to 1974. Full patent downloads in PDF format. Recommended for beginning patent searchers. See the tutorial on using FPO in the tabs above. 

Instruction & Outreach Librarian

Olivia Olivares's picture
Olivia Olivares
Kolligian Library
KL 260
(209) 285-7742