The Patent Number Search page allows you to simply search for patents by their number. While you can search for patent numbers in other ways, this page is designed to simplify one of the most common types of searching as much as possible. To use the page:

1. Type the number or numbers (separated by spaces) you're interested in into the box. If you include more than one number, they should be separated by a space. Whether you include commas or not, capitalize the prefix or not, your search will work fine.
2. Hit the Search button.

That's it! The database will be searched for all the numbers you provide, and a list of the ones found in our database will be returned, sorted with the most recent ones first. Since our database only includes data for patents issued between 1976 and 04/06/1999 , any patent numbers which fall outside this time period will not turn up in a search. A list of all the patent numbers in our database is available on the Database Status page.

A few things to Note:

• Anything you enter into the patent number search box that is not a patent number (other terms, operators like 'OR' or 'AND') will be ignored. The search will be conducted only on any entries you make that are recognized as patent numbers.
• The 'Refine Search' box that is on the search results page will use the same query format as the Advanced Search page. See the Advanced Search Help page for details on it's use.

Questions or Comments about the Patent Search Pages?
Mail them to www@ptodata.com