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Expired European patentEurope

Process for pollution abatement relating to gaseous effluents having high oxygen content and containing chlorine derivatives

EP 0497712 B1 · Applicant: LE CARBONE LORRAINE

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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 January 13, 1992 and granted March 20, 1996. A European patent lasts at most 20 years from filing, so its term ended January 13, 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 July 13, 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.
FiledJanuary 13, 1992
PublishedAugust 5, 1992
GrantedMarch 20, 1996
Term endedJanuary 13, 2012
Application numberEP 92420016
Classification (CPC)C01B7/012

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedJan 13, 1992PublishedAug 5, 1992Patent grantedMarch 20, 1996Term endedJan 13, 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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