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Expired European patentEurope

Method of producing process steam from a black liquor

EP 1155184 B1 · Applicant: KVAERNER PULPING TECHNOLOGIES AB

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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 November 9, 1998 and granted January 16, 2008. A European patent lasts at most 20 years from filing, so its term ended November 9, 2018.
  • 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 May 9, 2024.
  • 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.
FiledNovember 9, 1998
PublishedNovember 21, 2001
GrantedJanuary 16, 2008
Term endedNovember 9, 2018
Application numberEP 98957254
Classification (CPC)D21C11/06 +1 more

Timeline

Timeline From EPO dates

1999200120032005200720092011201320152017Application filedNov 9, 1998PublishedNov 21, 2001Patent grantedJan 16, 2008Term endedNov 9, 2018

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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