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Expired European patentEurope

A process for rapid acid hydrolysis of lignocellulosic material and hydrolysis reactor

EP 0824616 B1 · Applicant: Dedini S/A Administracao e Participacoes

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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 5, 1997 and granted July 12, 2000. A European patent lasts at most 20 years from filing, so its term ended March 5, 2017.
  • 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 5, 2022.
  • 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 5, 1997
PublishedFebruary 25, 1998
GrantedJuly 12, 2000
Term endedMarch 5, 2017
Application numberEP 97906054
Classification (CPC)D21C7/00 +2 more

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedMarch 5, 1997PublishedFeb 25, 1998Patent grantedJuly 12, 2000Term endedMarch 5, 2017

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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