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European application, no grantEurope

Removable ionisation chamber for a gas cleaner, especially of air

EP 0344074 A2 · Applicant: Godard, René Guy Georges Alexandre

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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 March 28, 1988 and never granted as a European patent. Had it been granted, its 20-year term would have ended March 28, 2008.
  • 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 September 28, 2013.
  • 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.
FiledMarch 28, 1988
PublishedNovember 29, 1989
GrantedNever granted
Term endedMarch 28, 2008
Application numberEP 89402071
Classification (CPC)B03C3/32 +2 more

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedMarch 28, 1988PublishedNov 29, 1989Term endedMarch 28, 2008

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.