Chemical Information Sources/SIRCh/Chemical Patent Searches

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
Miscellaneous edit