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Expired European patentEurope

Process and apparatus for the production of pressurised oxygen and krypton/xenon by cryogenic air separation

EP 1006326 B1 · Applicant: Linde Aktiengesellschaft

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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 February 11, 1999 and granted April 21, 2004. A European patent lasts at most 20 years from filing, so its term ended February 11, 2019.
  • 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 August 11, 2024.
  • 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.
FiledFebruary 11, 1999
PublishedJune 7, 2000
GrantedApril 21, 2004
Term endedFebruary 11, 2019
Application numberEP 99102628
Classification (CPC)F25J3/04412 +1 more

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedFeb 11, 1999PublishedJune 7, 2000Patent grantedApril 21, 2004Term endedFeb 11, 2019

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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