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Expired European patentEurope

A material and a method for removing oxo-anions and metal cations from a liquid

EP 1764348 B1 · Applicant: Technische Universiteit Delft

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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 September 16, 2005 and granted May 27, 2009. A European patent lasts at most 20 years from filing, so its term ended September 16, 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.
FiledSeptember 16, 2005
PublishedMarch 21, 2007
GrantedMay 27, 2009
Term endedSeptember 16, 2025
Application numberEP 05077104
Classification (CPC)C02F1/54

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedSep 16, 2005PublishedMarch 21, 2007Patent grantedMay 27, 2009Term endedSep 16, 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

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