1789 - present

The U.S. Patent and Trademark Office (USPTO)'s Patent Databases allows searching of the bibliographic data (titles, inventors, assignees, class codes, references, etc.) or full text in US patents issued since 1976. Full ASCII text is available; display of page images requires a special browser plug-in.

Materials Indexed: Patents & Trademarks Database Type: Full Text Collection, Index Interface Language: English Materials Language: English Subject: Chemical Engineering, Chemistry, Computer Science & Engineering, Electrical Engineering, Government, Materials Science & Engineering, Mechanical Engineering, Patents Broad Category: Engineering, Government Information, Sciences