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From the Patents View database, simple assignee and lawyer disambiguations are performed, and the patents are geocoded with a location-based disambiguation.

Data are then fed into the inventor disambiguation algorithm in order to identify clusters of inventor names that are determined to be the same individual.

Classification Text Attribute File (CTAF) contains the data from the Manual of Classification excluding notes. It is an alphabetical list of 67,800 subject headings referring to specific classes and subclasses of the patent classification system.

Patent Classification File is available bimonthly (i.e., once every two months, usually by the second week in odd months).

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The Patents View database is sourced from USPTO-provided text and XML data on published patent applications (2001-most recent update) and granted patents (1976-most recent update).

The current Patents View database My SQL dump is available for download, upon request.

Patent Classification System (USPC) is used to classify patents granted by the U. Please note that the USPC is updated regularly to better categorize patented technologies. The Classification Orders are the official record of change for classes within the U. Classification Orders are released to the patent community and to the general public on the first Tuesday of every month.

The USPC provides for the storage and retrieval of every U. patent document that a patent examiner needs to review when examining patent applications. patents granted since 1790 are reclassified to reflect these classification updates. The orders contain information on Abolished and Established classes and subclasses, Indent Changes, Position Changes, and Title Changes.

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