Patents.com provides a comprehensive worldwide source of patent data - to include 450 million searchable indexed patent pages available in 15 native languages. It is a source for patent data and analytic tools and a hosted community platform enabling users to connect to generate business opportunities, including the licensing and sale of intellectual property.
DOEpatents, developed by the U.S. Department of Energy (DOE) Office of Scientific and Technical Information (OSTI), is a searchable database of patent information resulting from DOE-sponsored research and development (R&D).
article references from 9,500 major scientific journals plus conference proceedings, patents, books, dissertations, and more; 1907-present; includes Medline
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This links to the Advanced Search screen, where you can limit your searches to the Document Type "Patent." You can also export directly into RefWorks!
PA - Patent Application Data
PC - Patent Country
PN - Patent Number