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European application, no grantEurope

Control of pressurized ozone flow to a pulp delignification reactor

EP 0671972 A1 · Applicant: Kamyr, Inc.

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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 November 16, 1993 and never granted as a European patent. Had it been granted, its 20-year term would have ended November 16, 2013.
  • 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 May 16, 2019.
  • 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.
FiledNovember 16, 1993
PublishedSeptember 20, 1995
GrantedNever granted
Term endedNovember 16, 2013
Application numberEP 94902254
Classification (CPC)D21C9/1026 +1 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedNov 16, 1993PublishedSep 20, 1995Term endedNov 16, 2013

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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