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Expired European patentEurope

Method of producing reactive silicon group-containing polyether oligomers

EP 1018530 B1 · Applicant: KANEKA CORPORATION

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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 December 28, 1999 and granted February 15, 2006. A European patent lasts at most 20 years from filing, so its term ended December 28, 2019.
  • 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 June 28, 2025.
  • 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.
FiledDecember 28, 1999
PublishedJuly 12, 2000
GrantedFebruary 15, 2006
Term endedDecember 28, 2019
Application numberEP 99403297
Classification (CPC)C08G65/336

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedDec 28, 1999PublishedJuly 12, 2000Patent grantedFeb 15, 2006Term endedDec 28, 2019

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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