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DWPI Classifcation Guide
Derwent World Patents Index categorizes patent documents using an easy to use classification system for all technologies. This unique system is consistently applied to all patents, enabling effective and precise searching in a particular area of technology.
Download a PDF copy here 492 KB, 27pp
DWPI Title Terms
DWPI Title Terms are used to simplify word searching of DWPI titles, and optimise the thoroughness of such searches. All given derivatives of a Title Term are collected under a MAIN TERM and listed in this user guide.
Download a PDF copy here 1.4 MB, 157pp
| User Guide Title | Edition | £ Price | $ Price | € Price |
|---|---|---|---|---|
| Patentee Codes | Edition 8: Revised September 2000 | 50 | 75 | 70 |
ISBN 0 901157 38 4
This User Guide contains an alphabetical listing of the 21,000 companies assigned Derwent standard codes, in both company name order and code order.
Download a PDF copy here 2.1 MB
To order any of these User Guides, please complete the order form.