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Expired European patentEurope

Method for operating a mixing apparatus for gases, especially for determining the Wobbe index of a test gas

EP 1067383 B1 · Applicant: AMS Analysen, Mess-und Systemtechnik GmbH

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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 21, 1999 and granted January 2, 2002. A European patent lasts at most 20 years from filing, so its term ended May 21, 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 November 21, 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.
FiledMay 21, 1999
PublishedJanuary 10, 2001
GrantedJanuary 2, 2002
Term endedMay 21, 2019
Application numberEP 99109994
Classification (CPC)G01N33/225

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedMay 21, 1999PublishedJan 10, 2001Patent grantedJan 2, 2002Term endedMay 21, 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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