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Expired European patentEurope

Process for treating gases by adsorption by using several adsorbers in a simultaneous adsorption phase

EP 0108005 B1 · Applicant: L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE

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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 October 19, 1983 and granted July 2, 1986. A European patent lasts at most 20 years from filing, so its term ended October 19, 2003.
  • 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 April 19, 2009.
  • 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.
FiledOctober 19, 1983
PublishedMay 9, 1984
GrantedJuly 2, 1986
Term endedOctober 19, 2003
Application numberEP 83402028
Classification (CPC)B01D53/047

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedOct 19, 1983PublishedMay 9, 1984Patent grantedJuly 2, 1986Term endedOct 19, 2003

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.