Derwent World Patents Index - Reference Information
Coverage Information
Latest Updates - Latest country publication dates and serial numbers
Country
Coverage and Kind Codes — Document
types (Kind Codes) included in DWPI for
each authority
Kind Codes - an introduction to patent specification descriptors
Number of records - statistical details of our coverage
DWPI Coverage map (316KB PDF)
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Dialog
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STN
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Comparison Table
Reference Tools For Developing Search Strategies
2008 Online Database Price List (PDF) - Prices are in US$, contact your host for local currency pricing
American/British Dictionary - Listing of American/British spelling differences
DWPI Standard Abbreviations - Common abbreviations used in Thomson Scientific's value-add titles and abstracts
DWPI - Details of Thomson Scientific's simple Classification System for all technologies
Patent Assignee Codes - Information on how these are developed and applied
Patentee Code Lookup Facility - Search facility for Thomson Scientific Patentee Assignee codes
Polymer Indexing news - News and assistance for polymer searchers
Search Commands Comparison - Comparison of common search terms
Search Tips & Samples - Help with online patent searching
WIPO Codes - World Intellectual Property Organization Country Codes
Glossary of Thomson Scientific Terminology
IPC reform
Subsections
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