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Expired European patentEurope

Rare earth aggregate formulation using di-block copolymers

EP 1720916 B1 · Applicant: RHODIA INC.

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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 28, 2005 and granted August 24, 2011. A European patent lasts at most 20 years from filing, so its term ended January 28, 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.
FiledJanuary 28, 2005
PublishedNovember 15, 2006
GrantedAugust 24, 2011
Term endedJanuary 28, 2025
Application numberEP 05712742
Classification (CPC)C08F297/00 +2 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedJan 28, 2005PublishedNov 15, 2006Patent grantedAug 24, 2011Term endedJan 28, 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

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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