In the never-ending quest for Google to control the flow of all information on the planet, Google has now released Google Patent Search. And — big surprise — it comes with the too familiar Beta tagline that marks all things Google so that they can disavow any responsibility.
With Google Patent Search, you can now search the full text of the U.S. patents. The search results are ranked the same as with Google Web Search, according to their relevance to a given search query. It does not currently include patent applications, international patents, or U.S. patents issued over the last few months so use accordingly.
Google Patent Search covers the entire collection of patents made available by the USPTO — from patents issued in the 1790s through those issued in the middle of 2006. All patents available through Google Patent Search come from the United States Patent and Trademark Office (USPTO).
There is an Advanced Patent Search page that offers searching by Patent number, Title, Inventor Name, Assignee Name, Issue date, Current U.S. Classification, and International Classification.
You can submit a suggestion or feature request for Google Patent Search by emailing Google at email@example.com.