Expired European patentEurope
Process and installation for the treatment of perfluorinated and hydrofluorocarbonated gases, for the purpose of their destruction
EP 0820801 B1 · Applicant: L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE
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.
Why it's free to use
- Filed July 8, 1997 and granted August 18, 2004. A European patent lasts at most 20 years from filing, so its term ended July 8, 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 January 8, 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.
FiledJuly 8, 1997
PublishedJanuary 28, 1998
GrantedAugust 18, 2004
Term endedJuly 8, 2017
Application numberEP 97401628
Classification (CPC)B01D53/323 +1 more
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.