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Expired European patentEurope

Producing electrical energy from natural gas using a solid oxide fuel cell

EP 1025604 B1 · Applicant: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.

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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 August 24, 1998 and granted November 7, 2001. A European patent lasts at most 20 years from filing, so its term ended August 24, 2018.
  • 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 February 24, 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.
FiledAugust 24, 1998
PublishedAugust 9, 2000
GrantedNovember 7, 2001
Term endedAugust 24, 2018
Application numberEP 98947473
Classification (CPC)H01M8/0662 +2 more

Timeline

Timeline From EPO dates

1999200120032005200720092011201320152017Application filedAug 24, 1998PublishedAug 9, 2000Patent grantedNov 7, 2001Term endedAug 24, 2018

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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