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European application, no grantEurope

Alkaline-peroxide-oxygen treatment for unbleached and chlorinated chemical pulps

EP 0206560 A2 · Applicant: Pulp and Paper Research Institute of Canada

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

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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 May 30, 1986 and never granted as a European patent. Had it been granted, its 20-year term would have ended May 30, 2006.
  • 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 November 30, 2011.
  • 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.
FiledMay 30, 1986
PublishedDecember 30, 1986
GrantedNever granted
Term endedMay 30, 2006
Application numberEP 86304123
Classification (CPC)D21C9/10

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedMay 30, 1986PublishedDec 30, 1986Term endedMay 30, 2006

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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