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Expired European patentEurope

A method for the preparation of a uniform solid fuel-oil dispersion

EP 0025279 B1 · Applicant: The British Petroleum Company p.l.c.

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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 August 12, 1980 and granted March 14, 1984. A European patent lasts at most 20 years from filing, so its term ended August 12, 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 February 12, 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.
FiledAugust 12, 1980
PublishedMarch 18, 1981
GrantedMarch 14, 1984
Term endedAugust 12, 2000
Application numberEP 80302760
Classification (CPC)C10L1/324 +1 more

Timeline

Timeline From EPO dates

1981198319851987198919911993199519971999Application filedAug 12, 1980PublishedMarch 18, 1981Patent grantedMarch 14, 1984Term endedAug 12, 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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