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About Derwent Innovations Index
Derwent Innovations Index
Derwent Innovations Index is the world's most comprehensive database
of international patent information, merging Derwent World Patents
Index® with Derwent Patents Citation Index®.
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Derwent World Patents Index
Derwent World Patents Index® (DWPI) is the world's most comprehensive
collection of professionally abstracted and annotated patent documents.
DWPI covers more than 30.5 million inventions (Basic Records/patent families)
detailed in over 65 million patent documents, with coverage from 50 worldwide
patent authorities and 2 literature sources.
All patent data is regularly updated with new information obtained from
Derwent World Patents Index, including data associated with the
Derwent Chemistry Resource, a unique chemical structure database.
More information about DWPI coverage, along with lists of WIPO country codes
and INID codes can be found on the
DWPI
coverage page.
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Derwent Patents Citation Index
The Derwent Patents Citation Index® (Derwent PCI) is an
online database of citation data appearing in patents from 6 major patent
authorities. It provides details of citations, both patent and literature,
reviewed by the examiner during the examination of a patent application.
Derwent PCI is the only database providing multi-source patents citation
coverage of all technologies. Prior to May 1997, examiner and author citations
were provided for 16 patent-issuing authorities. The database also contains a
backfile with patent records dating back to the 1970's.
Derwent PCI contains all up-to-date bibliographic patent family data from
Derwent World Patents Index and all patents and literature cited by
examiners, as well as references to citing patents. Each week, new cited and
citing references are added for approximately 45,000 records
from six
major patent-issuing authorities.
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Derwent Chemistry Resource
Derwent Chemistry Resource is a unique database that contains
searchable chemical structures and other substance-based information. It is used
to search for specific compounds that are indexed in Derwent World Patents Index
records. Think of Derwent Chemistry Resource as a searchable, central
indexing system for chemical information in Derwent records, a single point of
entry in which you can search for chemical entities in all of Derwent's
bibliographic records.
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