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Engineering; Chemistry and Chemical Engineering
Index opens the power of patent searching to all levels of an organisation. It offers an unrivalled breadth of coverage by combining value-added patent records from Derwent World Patents Index with patent citation information from Patents Citation Index. This unique merged data set, comprising 14.3 million inventions from 41 worldwide patent-issuing authorities, is accessed through an intuitive web interface. You can browse easily between patent records without using a complicated search language, and explore related ideas using citation links.