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Expired European patentEurope

Polycarbonates stabilized against radiation

EP 0664321 B1 · Applicant: BAYER AG

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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 January 11, 1995 and granted April 16, 2003. A European patent lasts at most 20 years from filing, so its term ended January 11, 2015.
  • 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 July 11, 2020.
  • 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 11, 1995
PublishedJuly 26, 1995
GrantedApril 16, 2003
Term endedJanuary 11, 2015
Application numberEP 95100309
Classification (CPC)C08K5/435

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedJan 11, 1995PublishedJuly 26, 1995Patent grantedApril 16, 2003Term endedJan 11, 2015

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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