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Expired European patentEurope

Immobilisation of vanadium deposited on sorbent materials during the treatment of oils containing heavy metals and coke precursors

EP 0063683 B1 · Applicant: ASHLAND OIL, INC.

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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 March 6, 1982 and granted September 10, 1986. A European patent lasts at most 20 years from filing, so its term ended March 6, 2002.
  • 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 September 6, 2007.
  • 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.
FiledMarch 6, 1982
PublishedNovember 3, 1982
GrantedSeptember 10, 1986
Term endedMarch 6, 2002
Application numberEP 82101793
Classification (CPC)C10G25/00 +2 more

Timeline

Timeline From EPO dates

1983198519871989199119931995199719992001Application filedMarch 6, 1982PublishedNov 3, 1982Patent grantedSep 10, 1986Term endedMarch 6, 2002

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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