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Expired European patentEurope

Increasing the reactivity of coupling homopolymers

EP 0083575 B1 · Applicant: THE GOODYEAR 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 4, 1983 and granted September 12, 1990. A European patent lasts at most 20 years from filing, so its term ended January 4, 2003.
  • 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 4, 2008.
  • 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 4, 1983
PublishedJuly 13, 1983
GrantedSeptember 12, 1990
Term endedJanuary 4, 2003
Application numberEP 83630001
Classification (CPC)C08F36/04 +1 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedJan 4, 1983PublishedJuly 13, 1983Patent grantedSep 12, 1990Term endedJan 4, 2003

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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