Comparing first level patent data with value-added patent information: A case study in the pharmaceutical field

World Patent Information

Volumn 31, Issue 2, 2009, Pages 117-122

  Emmerich, Christiane ^a  

^a FIZ Karlsruhe Leibniz Institute for Information Infrastructure   (Germany)

Author keywords

CAPLUSSM; Comparison; Derwent World Patents Index ; First level patent data; Patent full text databases; Unique retrieval; Value added patent information

Indexed keywords

EID: 61449264856     PISSN: 01722190     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.wpi.2008.06.003     Document Type: Article

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