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Expired European patentEurope

Apparatus for the removal of particulate material from a gas

EP 0244061 B1 · Applicant: POROUS ELEMENT TECHNOLOGY LIMITED

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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 February 26, 1987 and granted March 4, 1992. A European patent lasts at most 20 years from filing, so its term ended February 26, 2007.
  • 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 August 26, 2012.
  • 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.
FiledFebruary 26, 1987
PublishedNovember 4, 1987
GrantedMarch 4, 1992
Term endedFebruary 26, 2007
Application numberEP 87301705
Classification (CPC)C04B35/62281 +2 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedFeb 26, 1987PublishedNov 4, 1987Patent grantedMarch 4, 1992Term endedFeb 26, 2007

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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