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Expired European patentEurope

Method and apparatus for the drying of natural gas

EP 1173531 B1 · Applicant: Statoil ASA

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Overview

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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 March 21, 2000 and granted May 14, 2003. A European patent lasts at most 20 years from filing, so its term ended March 21, 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 September 21, 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.
FiledMarch 21, 2000
PublishedJanuary 23, 2002
GrantedMay 14, 2003
Term endedMarch 21, 2020
Application numberEP 00911122
Classification (CPC)C10L3/10 +1 more

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedMarch 21, 2000PublishedJan 23, 2002Patent grantedMay 14, 2003Term endedMarch 21, 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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