Figure 4From: Mining chemical information from open patentsSchematic workflow for extraction and interpretation of chemical reactions in patents. Stage 1 -the patent is identified and downloaded. Stage 2-the document is deflattened and segmented. Stage 3-various tools (OPSIN, OSRA, OSCAR3) are used to identify key elements in the reaction and convert them to semantic form. Stage 4-ChemicalTagger is applied to the language of the chemical reaction to determine the roles and processes. Where successful, the extracted information is converted to reactions expressed in CML.Back to article page