Derwent Innovation Index covers over 14.3 million basic inventions from 40 worldwide patent-issuing authorities from 1963 onwards. The database merges the patent information from Derwent World Patents Index® with the patent citation information from Derwent Patent Citation Index®. It facilitates rapid, precise patent searching and citation searching of inventions in chemical, electrical, electronic, and mechanical engineering .
Subject coverage: patents
Location: Web (remote access available)
