Current U.S. classification information for all patent grants issued by the U.S. Patent and Trademark Office from 1790 to May 2018. Approximately 450 main divisions of technology, called classifications/classes, broken into approximately 150,000 subdivisions, called subclassifications/subclasses.

Current U.S. classification information for all patent grants issued by the U.S. Patent and Trademark Office from 1790 to May 2018. Approximately 450 main divisions of technology, called classifications/classes, broken into approximately 150,000 subdivisions, called subclassifications/subclasses.

Current U.S. classification information for all patent applications (non-provisional utility and plant) published by the USPTO from 2001 to present. Approx. 450 main divisions of technology, called classifications/classes, broken into approx. 150,000 subdivisions, called subclassifications/subclasses.

Contains Cooperative Patent Classification (CPC) classification information for all Utility patent grants issued by the U.S. Patent and Trademark Office (USPTO) from 1790 to present. It is available as XML with schemas or text monthly (usually by the 15th of the month).

Contains Cooperative Patent Classification (CPC) classification information for all Utility patent applications published by the U.S. Patent and Trademark Office (USPTO) from 2001 to present. It is available as XML with schemas or text monthly (usually by the 15th of the month).