CAS Coverage of Patents

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 patents' issuance, and fully indexed by CAS scientists in less than 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 Content

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