Chemical Information Sources/SIRCh/Chemical Patent Searches

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SIRCh: Selected Internet Resources for Chemistry

Free Patent or Trademark Databases[edit]
Search Sites Requiring Registration[edit]
  • Delphion
  • SurfIP (offers access to multiple patent and other sources; International Patent Office of Singapore)
  • WikiPatents (a public community that reviews US patents and pending patent applications)
Commercial Patent Databases[edit]
Patent Classification, Country, and Kind Codes[edit]
Introduction to Patents[edit]