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Expired European patentEurope

Operating method for coal gasification combined cycle power plant

EP 1503142 B1 · Applicant: KABUSHIKI KAISHA TOSHIBA

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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 21, 1998 and granted November 26, 2008. A European patent lasts at most 20 years from filing, so its term ended August 21, 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 February 21, 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.
FiledAugust 21, 1998
PublishedFebruary 2, 2005
GrantedNovember 26, 2008
Term endedAugust 21, 2018
Application numberEP 04023944
Classification (CPC)F23D17/002 +2 more

Timeline

Timeline From EPO dates

1999200120032005200720092011201320152017Application filedAug 21, 1998PublishedFeb 2, 2005Patent grantedNov 26, 2008Term endedAug 21, 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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