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Expired European patentEurope

A process for the beneficiation of coal and beneficiated coal product

EP 0032811 B1 · Applicant: THE STANDARD OIL 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 14, 1981 and granted April 17, 1985. A European patent lasts at most 20 years from filing, so its term ended January 14, 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 July 14, 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.
FiledJanuary 14, 1981
PublishedJuly 29, 1981
GrantedApril 17, 1985
Term endedJanuary 14, 2001
Application numberEP 81300152
Classification (CPC)C10L9/10 +2 more

Timeline

Timeline From EPO dates

1982198419861988199019921994199619982000Application filedJan 14, 1981PublishedJuly 29, 1981Patent grantedApril 17, 1985Term endedJan 14, 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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