This section of the site describes the language used by the search engine. This language is used for all fields except for the patent number field.
Names of inventors, agents, attorneys, owners and applicants (when they are proper names and not corporate names) are stored as "last name (and) first name".
Commas: Do not use commas or periods with your search words; they are ignored.
Non-alphanumeric characters: "/" and "-" are kept in the text index. All other non alphanumeric characters are not indexed.
Phrases: To search for a phrase of several words, use double quotes, for example, "electric transformer".
Case Insensitivity: Searching is not case or accent sensitive.
For multiple word searches, the "operator" must be the same and the words searched must be within n words of each other
Search for a word in a field of the patents index. Here is the list of fields:
Note: Wildcards will not work between quotation marks. All content between quotation marks is treated as a phrase.