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dc.contributor.authorVopel, Katrinen_US
dc.contributor.authorScherer, Frederic M.en_US
dc.contributor.authorNarin, Francisen_US
dc.contributor.authorHarhoff, Dietmaren_US
dc.coverage.temporal1977-1995en_US
dc.date.accessioned2009-02-16T14:50:25Z-
dc.date.available2009-02-16T14:50:25Z-
dc.date.issued1997en_US
dc.identifier.urihttp://hdl.handle.net/10419/24249-
dc.description.abstractThrough a survey, economic value estimates were obtained on 962 inventions made in the United States and Germany and on which German patent renewal fees were paid to full-term expiration in 1995. A search of subsequent U.S. and German patents yielded a count of citations to those patents. Patents renewed to full term were significantly more valuable than patents allowed to expire before their full term. The higher an invention?s economic value estimate was, the more the relevant patent was subsequently cited.en_US
dc.language.isoengen_US
dc.publisherZentrum für Europäische Wirtschaftsforschung (ZEW) Mannheimen_US
dc.relation.ispartofseriesZEW Discussion Papers 97-27en_US
dc.subject.jelO34en_US
dc.subject.jelO47en_US
dc.subject.ddc330en_US
dc.subject.keywordInnovationen_US
dc.subject.keywordPatenten_US
dc.subject.keywordCitationen_US
dc.subject.keywordCount data modelen_US
dc.subject.stwInnovationen_US
dc.subject.stwPatenten_US
dc.subject.stwImmaterielles Anlagevermögenen_US
dc.subject.stwPublikationsanalyseen_US
dc.subject.stwBewertungen_US
dc.subject.stwUSAen_US
dc.subject.stwDeutschlanden_US
dc.titleCitation Frequency and the Value of Patented Innovationen_US
dc.typeWorking Paperen_US
dc.identifier.ppn237888815en_US
dc.rightshttp://www.econstor.eu/dspace/Nutzungsbedingungen-
dc.identifier.repecRePEc:zbw:zewdip:5130-
Appears in Collections:Publikationen von Forscherinnen und Forschern des ZEW
ZEW Discussion Papers

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