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Search by keywords
Google Patent Search enables full text searching of patents and applications from 1790 to present. Images display in PDF.
Search tips:
- Enter keywords to find issued patents and applications.
- View relevant individual patents to find the U.S. and international patent classifications related to your invention.
- View the patent image (Google PDF or USPTO TIFF). Primary classifications are in bold font.
- "Field of Search" indicates related classifications searched - these may also be relevant.
- Keep track of relevant patents found and classifications searched in your research log.
- To display search results as images, change the "View as" pull-down menu to "Thumbnails."
- Search results default to "Sort by relevance." Change to "Sort by date..." to display newest or oldest first.
- To search by patent number, inventor, U.S. classification, etc., use Advanced Patent Search.
More detail about Google Patent Search:
The USPTO Patent Full-Text and Image Database allows keyword searching for patents issued since 1976 and published applications. Images require TIFF
viewer.
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