Compendex Ei Compendex is the most comprehensive interdisciplinary engineering database in the world, with over three million summaries of journal articles, technical reports, and conference papers and proceedings in electronic form, dating from 1970 forward. The Science Citation Index is a multidisciplinary database, with searchable author abstracts, covering the journal literature of the sciences. It indexes 5,300 major journals across 164 scientific disciplines, covering approximately 2,000 more journals than its SCI print and CD-ROM counterparts, with all cited references captured. Currently, there are also two web sites available for free patent searching. A full text companion file has images, but gives subject classifications at time of issue .
Advanced mode allows subject classification search, but only of classes at time of issue.
This site is relatively slow, especially with images. Cassis CD-ROM Workstations Titles and abstracts of U.S. and European patents from 1976 to the present. Located on the first floor of the Engineering and Physical Sciences Library. EPSL Patents on Microfilm and Official Gazette Collection Full-text and images of United States patents from 1790 to the present. A full text file is available for a fee.