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Expired European patentEurope

Process for separating fillers from waste paper by flottation

EP 0299138 B1 · Applicant: Henkel Kommanditgesellschaft auf Aktien

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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 March 7, 1988 and granted January 15, 1992. A European patent lasts at most 20 years from filing, so its term ended March 7, 2008.
  • 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 September 7, 2013.
  • 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.
FiledMarch 7, 1988
PublishedJanuary 18, 1989
GrantedJanuary 15, 1992
Term endedMarch 7, 2008
Application numberEP 88103505
Classification (CPC)D21C5/022

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedMarch 7, 1988PublishedJan 18, 1989Patent grantedJan 15, 1992Term endedMarch 7, 2008

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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