Google Patents – Patent Search Engine from Google

Google Patents is a search engine from Google that indexes patents and patent applications from the United States Patent and Trademark Office (USPTO), which are taken from the original USPTO database (which is in the public domain). All 8 million patents have been put in the database. Optical character recognition (OCR) has been performed on the pages to make them searchable. This searchability includes all US patents and published patent applications.

It now looks more like regular Google web search. In addition to the new look, Google Patents now supports Google Instant and spelling auto-correction.

[advt]Google Patents covers the entire collection of issued patents and millions of patent application made available by the USPTO, from patents issued in the 1790s through the present. It don’t currently include international patents, but it look forward to expanding its coverage in the future. It has converted the entire image database of U.S. patents into a format that’s easy to search. You can search the full text of U.S. patents from the Google Patents homepage, or visit the Advanced Patents search page to search by criteria like patent number, inventor, and filing date.

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