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Advanced Search Examples

Search for records by using field tags, set combinations or a combination of both. Search operators and wildcards are allowed.

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AC=HHPL

Search for patent records containing this code in the Patent Assignee Name(s) and Code(s) field.

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AN=Intel

Search for patent records authored by this particular assignee.

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AU=Akram S AND AE=Micron*

Search for patent records by this inventor by using the AU field tag and the AE field tag connected by the AND Boolean operator.

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CC=DAPR

Search for patent records containing this code in the Cited Assignee Name(s) and Code(s) field.

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CD=1998-221597

Search for patent records for which the examiner cited a patent containing this code in the Derwent Primary Accession Number field.

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CI=Werner

Search for patent records for which the examiner cited patents that contain the search term in the Inventor field.

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CN=SMC

Search for patent records that have cited the name of the assignee. The system searches the Patent Assignee Name(s) and Code(s) field within a cited patent record.

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CP=(EP797246 OR US5723945-A)

Search for patent records that have been cited by the patent examiner.

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CX=US5723945-A

Search for patent records by family and patent number that have been cited by the patent examiner.

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DC=L03

Search for patent records that fall under this specific Derwent Class Code.

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DC=(T04 NOT (V05 OR V04))

Search for patent records that have a Derwent Class Code of T04, but these records do not contain codes with V05 or V04.

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DCN=RA03SE

Search for patent records that have this Derwent Compound Number in the Derwent Compound Number(s) field.

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DCR=96786-0-0-0

Search for patent records that have this DCR Number in the Compound(s) field.

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DRN=1848

Search for patent records that have this number in the Derwent Registry Number(s) field.

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GA=(1999-527918 OR 1999-527668)

Search for these two patent records by entering their Derwent Primary Access number.

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IP=(B23K* AND B24B*)

Search for patent records with IPCs that begin with both of these codes.

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MC=(A12-S05S)

Search the Derwent Manual Code(s) field for this patent record.

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PN=US2001015*

Search for patent records that include US2001015 in the patent number by using the PN field tag and a wildcard (*) character.

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RIN=03028

Search for patent records that include 03028 in the Ring Index Number field.

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TI=(semiconductor AND wafer level)

Search for patent records that contain the term semiconductor and the phrase wafer level in the title of a document.

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TS=(carcinogen OR cancer* NOT brain)

Search for patent records that include the terms carcinogen or cancer (but not brain) by using the TS field tag and the OR and NOT search operators to restrict the search.

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TS=(lunar OR moon) AND TS=gravit*

Search for patent records that include the terms lunar or moon. Each record must also include words gravity, gravitation, gravitational, and so on.

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TS=wheat AND #1

Search for patent records that contain the word wheat within the results of set 1.

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TS=ozone AND #1 AND #4

Search for patent records that contain the word ozone within the results of set 1 and set 4.

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DCN=RA03SE

Search for patent records that have this Derwent Compound Number in the Derwent Compound Number(s) field.

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Field Tags

• AN=Assignee Name
• AC=Assignee Code
• AE=Assignee Name + Code
• AU=Inventor
• CAC=Cited Assignee
• CPC=Cited Assignee Code
• CD=Cited PAN
• CAU=Cited Inventor
• CN=Cited Assignee Name
• CP=Cited Patent Number
• CX=CP + Family
• DC=Class Code
• DCN=Derwent Compound Number
• DCR=DCR Number
• DRN=Derwent Registry Number
• IP=Int Patent Classification
• MAN=Derwent Manual Code
• PAN=Derwent Prim. Access. No.
• PN=Patent Number
• RIN=Ring Index Number
• TI=Title
• TS=Topic

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Search Query Rules

• Each search term in the query must be explicitly tagged with a field tag. Different fields must be connected with search operators.

• Extraneous spaces are ignored by the product. For example, extra spaces around opening and closing parentheses ( ) and equal (=) signs are ignored.

• For set combinations, enter a number (#) sign before each set number in the query.

• The total number of search sets that you can run during a session is 200. If you attempt to run a query that exceeds the maximum, the product displays an error message and the search does not run.

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Search Tip

To search on the words AND, OR, NOT, and NEAR, enclose the word in quotation marks. Example: "Or"