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Expired European patentEurope

Unsaturated polylactone acrylates and derivatives thereof

EP 0477983 B1 · Applicant: UNION CARBIDE CHEMICALS AND PLASTICS COMPANY, INC.

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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 September 27, 1991 and granted November 13, 1996. A European patent lasts at most 20 years from filing, so its term ended September 27, 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 March 27, 2017.
  • 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.
FiledSeptember 27, 1991
PublishedApril 1, 1992
GrantedNovember 13, 1996
Term endedSeptember 27, 2011
Application numberEP 91116599
Classification (CPC)C08G59/027 +2 more

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedSep 27, 1991PublishedApril 1, 1992Patent grantedNov 13, 1996Term endedSep 27, 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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