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The FreePatentsOnline search engine is one of the most powerful, fastest and easiest patent search engines on the web.
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Patent Abstracts of Japan Database
The Industrial Property Digital Library (IPDL) offers the public access to IP Gazettes of the JPO free of charge through the Internet.
Patent search and analysis.
Patent Lens is a worldwide, open-access, free full-text patent informatics resource.
At Patents you can conduct a Patent Search, File a Patent Application, find a Patent Attorney, or search available technology through our Patent Exchange.
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Interactive Patent Coverage Map
This tool allows you to click on a country to quickly find the known patent search systems which have been evaluated by Intellogist to determine coverage for the selected country.
Patent Pal Toolbar
The Complete Patent Information Toolbar.