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Expired European patentEurope

Suspension firing of hog fuel, other biomass or peat

EP 0232249 B1 · Applicant: WEYERHAEUSER COMPANY

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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 July 18, 1985 and granted September 27, 1989. A European patent lasts at most 20 years from filing, so its term ended July 18, 2005.
  • 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 January 18, 2011.
  • 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.
FiledJuly 18, 1985
PublishedAugust 19, 1987
GrantedSeptember 27, 1989
Term endedJuly 18, 2005
Application numberEP 85903767
Classification (CPC)F23K1/00 +1 more

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedJuly 18, 1985PublishedAug 19, 1987Patent grantedSep 27, 1989Term endedJuly 18, 2005

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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