Discover United States patents
and their natural relationships

Current number of relationships: 8,535,135,714,771
To begin, type a natural description of what you are interested in.

Natural language is often the best search criteria (the more, the better).
Even an entire patent application is a good candidate.

You may also just type a list of Patent Numbers, separated by spaces, lines, or semicolons (each patent number may contain commas).

Type stars(*) after a word to amplify its relevance (more stars means more amplification), e.g. titanium***

You can link directly to the relationships of a patent.
Example: http://www.PatentSurf.net/5,396,718