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Chemical Patents in SciFinder
SciFinder @ Caltech
Access restricted to Caltech campus
Since 1907, has indexed over 3M chemical, biochemical & chemical engineering patents , from ~60 patent authorities (including the Eurasian Patent Organization (EAPO) since 2007, and recently added U.S. ‘chemical’ patents (1808 to 1906).
Patent Coverage in SciFinder
CAS covers patents from around the world. Patent records from nine major patent offices worldwide that meet CAS selection criteria are available online in CAPLUS within two days of the patents' issuance, and fully indexed by CAS scientists in less than 27 days from the date of issue.
Chemical Patent Information
Other Chemical Patent Search Tools
PATENTSCOPE Chemical Structure Search
WIPO PATENTSCOPE database chemical search (requires registration for a free account).
SureChEMBL provides free access to chemical data extracted from the patent literature. Chemistry annotations for US, EP, WO full text and JP abstracts are now available as follows:
Structures from text: from Jan 1, 1976
Structures from images: from Jan 1, 2007