Tools for Patent Digests

The Cooperative Patent Classification Schedules are available to the public. To search these CPC schedules, to view the subgroup patents, and to see more tools, login to the site ( Registration is free! ).

Cooperative Patent Classification System (U.S. pgpub and patent documents only)

Database for the CPC system for U.S. patent documents. Use this as a source of documents for your digests. Especially effective when used with Power Stack searching.

Sections Classes
Tools Available to Logged-In Users or to Patrons

For logged-in users:

  • Search the document-classifications in the CPC database
  • Use the document viewer to easily acces patent and pgoub information

For Patreon patrons:

  • All the digesting options of logged-in users plus --
  • Make your own digest piles; use these for searching and tagging
  • Make your own digest collections
  • Review your document taggings with automatically added tags for greater efficiency
  • Weekly updates of pgpubs and patents automatically added to your digest collections

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