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Expired European patentEurope

Recovery of dimethyl terephthalate from polymer mixtures

EP 0820429 B1 · Applicant: E.I. DU PONT DE NEMOURS AND COMPANY

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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 March 25, 1996 and granted August 23, 2000. A European patent lasts at most 20 years from filing, so its term ended March 25, 2016.
  • 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 September 25, 2021.
  • 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.
FiledMarch 25, 1996
PublishedJanuary 28, 1998
GrantedAugust 23, 2000
Term endedMarch 25, 2016
Application numberEP 96908902
Classification (CPC)C07C67/03

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedMarch 25, 1996PublishedJan 28, 1998Patent grantedAug 23, 2000Term endedMarch 25, 2016

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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