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Derwent Innovations Index facilitates rapid, precise patent searching, letting you conduct patent and citation searches of inventions in chemical, electrical, electronic, and mechanical engineering. Derwent Innovations Index covers over 14.3 million basic inventions from 40 worldwide patent-issuing authorities. You can view concise abstracts written by subject experts, then link to full-text primary patent records from a range of full patent sources.

This resource merges the value-added patent information from Derwent World Patents Index with the patent citation information from Derwent Patent Citation Index. You can use additional descriptive information and coding to quickly grasp a patent's significance and its relationship to other patents. Reduce duplication of R&D; track competitors' activities; detect and avoid patent infringement; identify potential gaps in the marketplace and possible licensing opportunities.

The database consists includes information about all US patents (including utility, design, reissue, plant patents and SIR documents) from the first patent issued in 1790 to the most recent issue week. Patents from January 1976 to the present offer the full searchable text, including all bibliographic data, such as the inventor's name, the patent's title, and the assignee's name; the abstract; the full description of the invention; and the claims.& The display of each patent's full-text includes a hyperlink to obtain full-page images of each page of the patent. Information from Certificates of Correction and Reexaminations is not included in the full-text database per se, but can be found as full-page images appended to the full-page images of the original patent.

Patents from 1790 to December 1975 offer only the patent number, issue date, and current US patent classification in the text display, and can be searched only within those fields. However, this limited text display also includes a hyperlink to obtain full-page images of all pages of the patent.

You must have a properly configured Web browser with an image display plug-in capable of displaying TIFF images with T.6 (CCITT Group 4) compression.