As of October 1, 2002, Chemical Patents Plus will no longer be available
As of October 1, 2002, Chemical Patents Plus will no longer be available.
Chemical Patents Plus from CAS included the full text for all classes of patents issued by the U.S. Patent and Trademark Office from 1975 to the present. From January 1, 1995, the patent page images were available for a fee. Searching of the database was free, as was the display of patent
titles and abstracts. Users are now referred to the other extensive databases on the STN system that cover patents.
Summary by 李晓霞 on 2002-10-25
Last updated by 李晓霞 on 2002-10-25