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Expired European patentEurope

Flame-retardant polyamide compositions

EP 0055893 B1 · Applicant: E.I. DU PONT DE NEMOURS AND COMPANY

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Overview

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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 November 18, 1981 and granted February 13, 1985. A European patent lasts at most 20 years from filing, so its term ended November 18, 2001.
  • 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 May 18, 2007.
  • 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.
FiledNovember 18, 1981
PublishedJuly 14, 1982
GrantedFebruary 13, 1985
Term endedNovember 18, 2001
Application numberEP 81305448
Classification (CPC)C08K5/02 +1 more

Timeline

Timeline From EPO dates

1982198419861988199019921994199619982000Application filedNov 18, 1981PublishedJuly 14, 1982Patent grantedFeb 13, 1985Term endedNov 18, 2001

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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