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Expired European patentEurope

The use of nucleating agents for improving dimensional stability, abrasion resistance and stretchability of polyester films

EP 0176017 B1 · Applicant: HOECHST AKTIENGESELLSCHAFT

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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 14, 1985 and granted February 5, 1992. A European patent lasts at most 20 years from filing, so its term ended September 14, 2005.
  • 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 14, 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.
FiledSeptember 14, 1985
PublishedApril 2, 1986
GrantedFebruary 5, 1992
Term endedSeptember 14, 2005
Application numberEP 85111652
Classification (CPC)C08K5/0008 +2 more

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedSep 14, 1985PublishedApril 2, 1986Patent grantedFeb 5, 1992Term endedSep 14, 2005

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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