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Expired European patentEurope

Method and apparatus for injecting a gas into a two-phase stream

EP 1781987 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 August 18, 2005 and granted September 30, 2015. A European patent lasts at most 20 years from filing, so its term ended August 18, 2025.
  • 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.
FiledAugust 18, 2005
PublishedMay 9, 2007
GrantedSeptember 30, 2015
Term endedAugust 18, 2025
Application numberEP 05805562
Classification (CPC)F23D1/00 +2 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedAug 18, 2005PublishedMay 9, 2007Patent grantedSep 30, 2015Term endedAug 18, 2025

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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