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Expired European patentEurope

Combustor chamber for a gas turbine

EP 0576697 B1 · Applicant: ABB RESEARCH LTD.

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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 June 29, 1992 and granted August 27, 1997. A European patent lasts at most 20 years from filing, so its term ended June 29, 2012.
  • 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 December 29, 2017.
  • 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.
FiledJune 29, 1992
PublishedJanuary 5, 1994
GrantedAugust 27, 1997
Term endedJune 29, 2012
Application numberEP 92110969
Classification (CPC)F23D23/00 +1 more

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedJune 29, 1992PublishedJan 5, 1994Patent grantedAug 27, 1997Term endedJune 29, 2012

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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