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Expired European patentEurope

Cryogenic distillation system for air separation

EP 1055893 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 May 19, 2000 and granted November 17, 2004. A European patent lasts at most 20 years from filing, so its term ended May 19, 2020.
  • 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 November 19, 2025.
  • 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.
FiledMay 19, 2000
PublishedNovember 29, 2000
GrantedNovember 17, 2004
Term endedMay 19, 2020
Application numberEP 00201781
Classification (CPC)F25J3/04 +2 more

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedMay 19, 2000PublishedNov 29, 2000Patent grantedNov 17, 2004Term endedMay 19, 2020

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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