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Expired European patentEurope

Hydrolytically stable pentaerythritol diphosphites

EP 0680486 B1 · Applicant: DOVER CHEMICAL CORPORATION

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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 20, 1993 and granted March 24, 1999. A European patent lasts at most 20 years from filing, so its term ended January 20, 2013.
  • 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 20, 2018.
  • 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 20, 1993
PublishedNovember 8, 1995
GrantedMarch 24, 1999
Term endedJanuary 20, 2013
Application numberEP 93904542
Classification (CPC)C08K5/527 +1 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedJan 20, 1993PublishedNov 8, 1995Patent grantedMarch 24, 1999Term endedJan 20, 2013

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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