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Publication number
The publication number is the number assigned to a patent application on publication.
The publication number is made up of a country code (two letters) and a serial number (variable, one to ten digits) (eg US4325348).
Sometimes the number is followed by a kind code
corresponding to a specific stage in the procedure.
Note: Do not enter blanks between the country code
and the number.
To retrieve all the documents having a particular country code
in combination with other search criteria (dates, etc.), all you have to do is enter the country code
in the publication number field in combination with a date in the publication date
field.
You may enter a maximum of four search terms per field and a total of 21 search terms per mask.
For the publication number and application number
fields, if more than one term is entered, the default operator
is OR. This means that you can enter your search terms without having to type the default operator
.
When searching for non-patent literature (XP) documents, you must enter the accession number in the publication number field.
For more information on patent searching, see the following pages:
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