U.S. patents can be found on the website of the U.S. Patent and Trademark Office (WWW USPTO). gov)。
The general retrieval method can refer to the following steps:
1. Enter the patent search page through the website of the US Patent and Trademark Office (official website-Patents-Search Patents).
2. Select the retrieval database, taking the full-text database as an example: USPTO patent full-text and image database (PATFT).
3. Enter the quick search.
You can query through the field information such as patent number, application number and applicant.
4. Or enter the advanced search.
Edit your own search formula for more complex queries.