CAS covers patents from around the world. Patent records from nine major patent offices worldwide that meet CAS selection criteria are available online in CAplusSM within two days of the patent's publication, and fully indexed by CAS scientists within 27 days from the date of issue.
Patents are selected from over 35,000 International Patent Classification (IPC) codes and 99 U.S. National Patent Classification Codes. Coverage is described in the following lists:
CAS also provides direct patent content for 31 patent offices with PatentPakTM, a robust new patent workflow solution that offers instant access to hard-to-find chemistry in full-text patents directly in SciFinder.