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Expired European patentEurope

Process for improving the compatibility of oils and fillers in rubber compositions

EP 0032076 B1 · Applicant: RHONE-POULENC CHIMIE DE BASE

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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 December 8, 1980 and granted June 12, 1985. A European patent lasts at most 20 years from filing, so its term ended December 8, 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 June 8, 2006.
  • 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.
FiledDecember 8, 1980
PublishedJuly 15, 1981
GrantedJune 12, 1985
Term endedDecember 8, 2000
Application numberEP 80401751
Classification (CPC)C08K5/3415

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedDec 8, 1980PublishedJuly 15, 1981Patent grantedJune 12, 1985Term endedDec 8, 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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