Derwent

Derwent covers more than 10 million basic inventions, a total of 30 million patents, over 40 patents granting institutions.

The patent index Derwent Innovations Index is a resource based on the Web, Product of ISI ® and Derwent Information, which combines the Derwent World Patents Index ® with the Derwent Patent Citation Index ®. Updated weekly, and covers more than 10 million basic inventions, a total of 30 million patents, more than 40 patent-granting institutions. With coverage that begins in 1963, this resource provides researchers with a comprehensive overview of the inventions in the world market in all categories: chemical, electrical, electronics and engineering. Derwent Innovations Index is part of ISI Web of Knowledge, a dynamic platform and a true portal for research, based on the Web.

The webpage direction is: http://ip-science.thomsonreuters.com/es/