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Expired European patentEurope

Covalently-nucleophilic self-curing systems

EP 0668326 B1 · Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.

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Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.

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Why it's free to use

  • Filed January 21, 1995 and granted July 28, 2004. A European patent lasts at most 20 years from filing, so its term ended January 21, 2015.
  • A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by July 21, 2020.
  • We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledJanuary 21, 1995
PublishedAugust 23, 1995
GrantedJuly 28, 2004
Term endedJanuary 21, 2015
Application numberEP 95100809
Classification (CPC)C08G77/22 +2 more

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedJan 21, 1995PublishedAug 23, 1995Patent grantedJuly 28, 2004Term endedJan 21, 2015

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

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