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Expired European patentEurope

A polyphosphazene copolymer and a method for its preparation

EP 0014865 B1 · Applicant: THE FIRESTONE TIRE & RUBBER 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 January 29, 1980 and granted September 29, 1982. A European patent lasts at most 20 years from filing, so its term ended January 29, 2000.
  • 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 29, 2005.
  • 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 29, 1980
PublishedSeptember 3, 1980
GrantedSeptember 29, 1982
Term endedJanuary 29, 2000
Application numberEP 80100441
Classification (CPC)C08G79/025

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedJan 29, 1980PublishedSep 3, 1980Patent grantedSep 29, 1982Term endedJan 29, 2000

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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