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DERWENT DEMO
— Free practice searching limited to one week of data
Derwent Number Search
Manual code revisions
By Publication Number
US United States of America
EP European Patent Office
WO World IPO
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DE Germany
--------
AP African Reg. IPO (ARIPO)
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BE Belgium
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CA Canada
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CS Czechoslovakia
DE Germany
DD German Democratic Republic
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ES Spain
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KE Kenya
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MC Monaco
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MW Malawi
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NL Netherlands
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NZ New Zealand
OA African IPO (OAPI)
PH Philippines
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RO Romania
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SU U.S.S.R.
TJ Tajikistan
TR Turkey
TW Taiwan
US United States of America
VN Vietnam
WO World IPO (WIPO)
YU Yugoslavia
ZA South Africa
ZM Zambia
ZW Zimbabwe
Number Searching
Examples: US 6056689, EP 738482, WO 27698, JP 131452
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By Accession Number
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Examples: 2000-266649 | 2000-185347 | 2000-317168
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