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Expired European patentEurope

Use of a mix of carbon dioxide snow and liquid nitrogen in deep-freeze applications

EP 1856989 B1 · Applicant: L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés 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 18, 2006 and granted July 22, 2009. A European patent lasts at most 20 years from filing, so its term ended May 18, 2026.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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 18, 2006
PublishedNovember 21, 2007
GrantedJuly 22, 2009
Term endedMay 18, 2026
Application numberEP 06300493
Classification (CPC)F25D3/12 +2 more

Timeline

Timeline From EPO dates

2007200920112013201520172019202120232025Application filedMay 18, 2006PublishedNov 21, 2007Patent grantedJuly 22, 2009Term endedMay 18, 2026

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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