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Expired European patentEurope

Cationic unsaturated saccharides, polymers produced from them and their use

EP 0764655 B1 · Applicant: HOECHST AKTIENGESELLSCHAFT

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Overview

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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 August 19, 1996 and granted March 14, 2001. A European patent lasts at most 20 years from filing, so its term ended August 19, 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 February 19, 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.
FiledAugust 19, 1996
PublishedMarch 26, 1997
GrantedMarch 14, 2001
Term endedAugust 19, 2016
Application numberEP 96113234
Classification (CPC)C08F251/00 +2 more

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedAug 19, 1996PublishedMarch 26, 1997Patent grantedMarch 14, 2001Term endedAug 19, 2016

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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