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Databases by Subject: Patents

Major Indexes

U.S. Patents Full-Text and Image Database

Full-page images of all patents issued by the U.S. Patent & Trademark Office (USPTO) from 1790 - present. Full-text searching from 1976 - present.

Additional Indexes

Ei Compendex

Find engineering information from GEOBASE, Ei Engineering, Inspec, GeoRef, Referex, CBNB and Chimica.

Materials Science & Engineering Database

Find content on materials science, metallurgy, ceramics, polymers, and composites used in engineering applications.

Mergent Archives

Mergent Archives is an online database providing you with access to a vast, indexed collection of corporate and industry related documents, including annual reports, key business ratios, D&B Country Reports, Million Dollar Directory volumes, Hoover's handbooks, a patent archive, and more.