Resources and Links
Patent Offices:
United States Patent & Trademark Office www.uspto.gov
World Intellectual Property Organization (WIPO) http://www.wipo.int/portal/index.html.en
Japan Patent Office http://www.jpo.go.jp/
European Patent Office http://ep.espacenet.com/
German Patent Office http://www.dpma.de/english/index.html
Patent documents:
U.S. Patent Full-text Search http://patft.uspto.gov/
google patent search http://www.google.com/patents