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Expired European patentEurope

Method for making monomers with two quaternary amino groups and (co)polymers obtained from said monomers

EP 1192124 B1 · Applicant: Atofina

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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 January 19, 2001 and granted August 11, 2004. A European patent lasts at most 20 years from filing, so its term ended January 19, 2021.
  • 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 July 19, 2026.
  • 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.
FiledJanuary 19, 2001
PublishedApril 3, 2002
GrantedAugust 11, 2004
Term endedJanuary 19, 2021
Application numberEP 01907646
Classification (CPC)C07C213/08

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedJan 19, 2001PublishedApril 3, 2002Patent grantedAug 11, 2004Term endedJan 19, 2021

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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