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Expired European patentEurope

Polymeric particle acid neutralizers with reactive epoxy core for engine oils

EP 0187544 B1 · Applicant: FORD-WERKE 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 December 31, 1985 and granted February 15, 1989. A European patent lasts at most 20 years from filing, so its term ended December 31, 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 July 1, 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.
FiledDecember 31, 1985
PublishedJuly 16, 1986
GrantedFebruary 15, 1989
Term endedDecember 31, 2005
Application numberEP 85309550
Classification (CPC)C08F8/08 +2 more

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedDec 31, 1985PublishedJuly 16, 1986Patent grantedFeb 15, 1989Term endedDec 31, 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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.