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European application, no grantEurope

Production of free gas by gas hydrate conversion

EP 1807604 A2 · Applicant: ConocoPhillips Company

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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 September 16, 2005 and never granted as a European patent. Had it been granted, its 20-year term would have ended September 16, 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.
FiledSeptember 16, 2005
PublishedJuly 18, 2007
GrantedNever granted
Term endedSeptember 16, 2025
Application numberEP 05797832
Classification (CPC)E21B43/25 +2 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedSep 16, 2005PublishedJuly 18, 2007Term endedSep 16, 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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