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Expired European patentEurope

Acrylates having an alcohol, aldehyde and/or ether function, their process of preparation and their use for obtaining polymers and copolymers

EP 0465293 B1 · Applicant: ELF ATOCHEM S.A.

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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 21, 1991 and granted September 13, 1995. A European patent lasts at most 20 years from filing, so its term ended June 21, 2011.
  • 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 21, 2016.
  • 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 21, 1991
PublishedJanuary 8, 1992
GrantedSeptember 13, 1995
Term endedJune 21, 2011
Application numberEP 91401684
Classification (CPC)C07D307/87 +2 more

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedJune 21, 1991PublishedJan 8, 1992Patent grantedSep 13, 1995Term endedJune 21, 2011

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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