Home > Search the Web > Reference Web Sites > Patents

• Delphion Research Intellectual Property Network
  Search and view patent documents from the United States. Before searching, you must complete the free basic search registration.
  URL: http://www.delphion.com/research/  Added: September 15, 2011

• U.S. Patent Office Database
  Search this database for issued patents and published patent applications.
  URL: http://www.uspto.gov/patft/  Added: September 15, 2011

• Intellectual Property Digital Library
  Use this site to search European patents, trademarks, and industrial designs.
  URL: http://www.wipo.int/ipdl/en/  Added: September 15, 2011

• Page
• View source
• History

• Log in