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Expired European patentEurope

Preparation of acrylic polymers using a ternary peroxide initiator system

EP 0206289 B1 · Applicant: E.I. DU PONT DE NEMOURS AND COMPANY

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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 June 20, 1986 and granted February 26, 1992. A European patent lasts at most 20 years from filing, so its term ended June 20, 2006.
  • 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 December 20, 2011.
  • 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.
FiledJune 20, 1986
PublishedDecember 30, 1986
GrantedFebruary 26, 1992
Term endedJune 20, 2006
Application numberEP 86108467
Classification (CPC)C08F265/06

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedJune 20, 1986PublishedDec 30, 1986Patent grantedFeb 26, 1992Term endedJune 20, 2006

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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