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Expired European patentEurope

Dual-purpose combuster for ordinary combustion and pulse combustion

EP 0886104 B1 · Applicant: POWDERING JAPAN K.K.

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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 November 11, 1997 and granted August 13, 2003. A European patent lasts at most 20 years from filing, so its term ended November 11, 2017.
  • 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 11, 2023.
  • 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 11, 1997
PublishedDecember 23, 1998
GrantedAugust 13, 2003
Term endedNovember 11, 2017
Application numberEP 97119734
Classification (CPC)F23C15/00 +2 more

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedNov 11, 1997PublishedDec 23, 1998Patent grantedAug 13, 2003Term endedNov 11, 2017

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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