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Expired European patentEurope

Process for preparing alkyloligoglucosides with a high degree of oligomerization

EP 0828747 B1 · Applicant: Cognis Deutschland GmbH & Co. KG

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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.

Why it's free to use

  • Filed February 23, 1996 and granted May 22, 2002. A European patent lasts at most 20 years from filing, so its term ended February 23, 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 August 23, 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.
FiledFebruary 23, 1996
PublishedMarch 18, 1998
GrantedMay 22, 2002
Term endedFebruary 23, 2016
Application numberEP 96905784
Classification (CPC)C07H15/04 +1 more

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedFeb 23, 1996PublishedMarch 18, 1998Patent grantedMay 22, 2002Term endedFeb 23, 2016

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