Derwent Innovations Index

Access Now: Derwent Innovations Index

Librarian: Jennifer Garrett

Derwent Screenshot

What it is:

  • A specialized database for searching U.S. and foreign patents in the areas of chemical, electrical, and mechanical engineering.

What you can expect to find:

  • 30+ million patents from 1966 - current, updated on a weekly basis.
  • Standardized unique assignee codes for 21,000 companies worldwide.
  • Re-written descriptive patent titles and abstracts for simple keyword searching.
  • Applications and issued patent information.
  • Access to full-text and images for most patents.

Some useful things you can do:

  • Look up specific patents and access the full-text and images as PDFs.
  • Search for examiners' cited patents and related literature, including cited references of articles indexed in Web of Science.
  • Search for patents pertaining to a specific company or organization.
  • Search for patents using various classification codes including DPWI and IPC.
  • Analyze a set of results to rank counts by date, inventor, assignee, or class.
  • Save searches and create alerts or RSS feeds.
  • Export citations to reference management software such as RefWorks or Zotero.


  • Can only export up to 500 records at a time.
  • May need to access full-text of patent and/or cited literature in an alternative source at the library or via issuing agency.

Content sources:

  • 40+ patent issuing agencies from around, North and South America, Europe, Asia, and South Africa.

Video Tutorials and Related Materials:

 Patent Searching

 Derwent Innovations Index:  Introduction

 Derwent Innovations Index:  Search Tips

 Derwent Innovations Index:  Compound Search

 Web of Science Search Tips