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Expired European patentEurope

Method for extracting a mine gas in areas which are not directly influenced by mining

EP 1711684 B1 · Applicant: Ehrhardt, Wilhelm

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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 January 21, 2005 and granted April 2, 2008. A European patent lasts at most 20 years from filing, so its term ended January 21, 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.
FiledJanuary 21, 2005
PublishedOctober 18, 2006
GrantedApril 2, 2008
Term endedJanuary 21, 2025
Application numberEP 05714885
Classification (CPC)E21F7/00 +1 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedJan 21, 2005PublishedOct 18, 2006Patent grantedApril 2, 2008Term endedJan 21, 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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