Patents

Patent Searches

• US Patent and Trademark Office Database -- provides searchable access to the full-text of patents since 1976. Full-page images of patents since 1790 are also available, although you need to know the Patent Number or Current US Classification to find pre-1976 patents. Full-Image is available but requires the TIFF image browser plug-in.
• Patent Classification Home -- help for finding Classification numbers needed to search for pre-1976 patents when patent number is not known.
• PAT 2 PDF -- free search and downloadable copies of a patent from the U.S. Patent and Trademark Office. Simply follow the instructions for how to enter the patent number, enter the number(s) in the box, and click on Fetch Patent.
• Free Patents Online -- patent analytics and searching.
• US Pat -- Patent Document Delivery Service. 30,000,000 world-wide documents. Inlcudes Patent Search, Historical, Antique, and Geneaology Patent Services.

Patent Law & Info

• Patent Law Links -- the Yahoo of Patent Info.
• Nolo.com -- good introduction to the topic.

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