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Main Subject
Enter words that must appear in the title or abstract of the patent. For different word endings, use the ? wildcard: SUPERCONDUCT? Combine words to get specific information. Example: SUPERCONDUCT? AND (INSULATION OR THERMAL SHOCK)
Entire Text
Use this option to search all words in the text of the patent. You can use wildcards and combine words, as described above.
Class
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Patent Assignee
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Inventor
Enter the last name and then the first name or first initial, using a wildcard to find variations of the name. Examples: COLE GEORGE? or COLE G? (To search by the company that owns the patent, use Patent Assignee.)
Patent or Application Number
Enter the two-letter country code followed by a space and the number just as it appears in the patent or citation, with all punctuation. For example, patent number US 5,251,234 or application number EP 93200044. To display a list of country codes, click Country Code List.
Note about U.S. application numbers: U.S. application numbers are reused every several years. To search by U.S. application number, if you know the application year, select the year from the Application Year drop-down list.
Patent or Application Year
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