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Expired European patentEurope

Method of and apparatus for removing sulfur oxides from hot flue gases

EP 0114477 B1 · Applicant: F.L. Smidth & Co. A/S

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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 12, 1983 and granted April 15, 1987. A European patent lasts at most 20 years from filing, so its term ended December 12, 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 June 12, 2009.
  • 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 12, 1983
PublishedAugust 1, 1984
GrantedApril 15, 1987
Term endedDecember 12, 2003
Application numberEP 83307556
Classification (CPC)B01D53/501

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedDec 12, 1983PublishedAug 1, 1984Patent grantedApril 15, 1987Term endedDec 12, 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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