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Searching the Identifying Codes Field

Enter Identifying Codes to search the following fields within a record.

• Accession Number
• ISSN
• ISBN
• Patent Number  (for records added to database from 1986 to present)
• Patent Class  (for records added to database from 1986 to present)
• Patent Date Granted

Enter one or more codes connected with search operators (AND, OR, NOT). Enter complete codes or partial codes using wildcards (* $ ?).

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Left- and Right-hand Truncation

Both left- and right-hand truncation are allowed when using wildcards (* $ ?) when searching for Identifying Codes. You must enter at least one characters after a wildcard when used at the beginning of a word.

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Identifying Codes Search Examples

• PREV200300465955 finds this record with this accession number.

• *8891* finds all records that contains these four number anywhere in the accession number.

• 0015-6639 finds records that have this ISSN identifier.

• *32-7* finds all records that that contain 32-7 anywhere in the ISSN identifier, such as 0032-745X and 0532-7601.

• 2-7380* finds records that begin with this ISBN identifier. For example, 2-7380-1000-8, 2-7380-0810-0, 2-7380-0716-3, etc.

• US 5889169 finds this patent record.

• US 6636757 OR US 6635071 finds both these patent records.

• 435-107 finds all U.S. patent records that fall within this patent class.

• September 09, 2003 finds all U.S. patent records that were granted on this particular date.

Note: When entering an ISBN, we recomment that you always enter an asterisk (*) wildcard following the last digit. Many ISBNs have an alphbetic character or a word following the last digit. For example, 2-7380-1018-0 (paper). The system cannot find this record if you only enter 2-7380-1018-0. An error message is returned indicating that the record cannot be found.

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About the ISSN Identifier

The International Standard Serial Number is a unique eight-digit number that identifies periodical publications such as journals and electronic publications.

The format is four numbers, a hyphen (-), three numbers, and then a check character that may be a number or an X. Example: 0015-6639

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About the ISBN Identifier

The International Standard Book Number is a unique machine-readable identifier that marks a book unmistakably.

The format is a 10-digit number that contains 3 hyphens (-). The last digit is a check character, which may be a number or an X. The position of the hyphens can vary for each ISBN identifier. Example: 2-7380-1000-8