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Expired European patentEurope

Process for preparing and purifying alkoxyphosphazene polymer

EP 0199847 B1 · Applicant: THE FIRESTONE TIRE & RUBBER 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 November 19, 1985 and granted November 7, 1990. A European patent lasts at most 20 years from filing, so its term ended November 19, 2005.
  • 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 19, 2011.
  • 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 19, 1985
PublishedNovember 5, 1986
GrantedNovember 7, 1990
Term endedNovember 19, 2005
Application numberEP 85114723
Classification (CPC)C08G79/025

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedNov 19, 1985PublishedNov 5, 1986Patent grantedNov 7, 1990Term endedNov 19, 2005

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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