Are two separate databases and are searched separately. Issued patents are available from 1789-present and published applications are available since March 2001. You may now easily download PDF versions of both documents
PubWest and PubEast
Searches databases that U.S. patent examiners use at the Patent Office. The system is very flexible and is available at the Engineering Library only. Contact Dave Zwicky for an appointment.
Is the new patent systems that will be used by the United States and the European Patent Office. Other countries may also move to this system. It is being phased into use on U.S. databases but is used in most areas and is now available on Espacenet.
Contains patents from many countries organized by patent families. Most topics go back to the 1960s. The database uses International Patent Classification and Derwent Classification. Chemical structure searching is available. This is a subscription database for Purdue users.