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Expired European patentEurope

Preparation of tetrafluoroethylene fine powder resins

EP 0239192 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 January 26, 1987 and granted June 6, 1990. A European patent lasts at most 20 years from filing, so its term ended January 26, 2007.
  • 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 26, 2012.
  • 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 26, 1987
PublishedSeptember 30, 1987
GrantedJune 6, 1990
Term endedJanuary 26, 2007
Application numberEP 87300632
Classification (CPC)C08F14/26

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedJan 26, 1987PublishedSep 30, 1987Patent grantedJune 6, 1990Term endedJan 26, 2007

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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