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Derwent Innovations Index (Web of Science)
Derwent Innovations Index Derwent Innovations Index is the world's most comprehensive database of international patent information, merging the Derwent World Patents Index® with the Derwent Patents Citation Index®. Over 14 million basic inventions and 20 million patents are covered in Derwent Innovations Index, with coverage dating back to 1966 in some technology areas. This unique database gives users a comprehensive overview of inventions in the global marketplace in three categories: Chemical, Engineering, and Electrical and Electronic. Every week approximately 25,000 patent documents from more than 40 patent-issuing authorities are reviewed and value enhanced by Derwent's patent experts. In addition, every week new cited and citing references are added for approximately 45,000 records from the major patent-issuing authorities.
