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Expired European patentEurope

Use of protein hydrolysate derived from keratin-containing material in the wet-end of a papermaking process

EP 1733092 B1 · Applicant: Nederlandse Organisatie voor Toegepast -Natuurwetenschappelijk Onderzoek TNO

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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 February 18, 2005 and granted July 13, 2011. A European patent lasts at most 20 years from filing, so its term ended February 18, 2025.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledFebruary 18, 2005
PublishedDecember 20, 2006
GrantedJuly 13, 2011
Term endedFebruary 18, 2025
Application numberEP 05710899
Classification (CPC)D21H21/18 +1 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedFeb 18, 2005PublishedDec 20, 2006Patent grantedJuly 13, 2011Term endedFeb 18, 2025

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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