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Expired European patentEurope

Process for producing structurally resistant paper

EP 0823950 B1 · Applicant: BAYER AG

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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 April 22, 1996 and granted November 21, 2001. A European patent lasts at most 20 years from filing, so its term ended April 22, 2016.
  • 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 October 22, 2021.
  • 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.
FiledApril 22, 1996
PublishedFebruary 18, 1998
GrantedNovember 21, 2001
Term endedApril 22, 2016
Application numberEP 96913520
Classification (CPC)D21H21/20 +2 more

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedApril 22, 1996PublishedFeb 18, 1998Patent grantedNov 21, 2001Term endedApril 22, 2016

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.