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Expired European patentEurope

An anti-shudder additive composition and lubricating oil composition containing the same

EP 1674557 B1 · Applicant: Chevron Oronite Company LLC

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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 November 30, 2005 and granted December 21, 2016. A European patent lasts at most 20 years from filing, so its term ended November 30, 2025.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledNovember 30, 2005
PublishedJune 28, 2006
GrantedDecember 21, 2016
Term endedNovember 30, 2025
Application numberEP 05257367
Classification (CPC)C10M141/10

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedNov 30, 2005PublishedJune 28, 2006Patent grantedDec 21, 2016Term endedNov 30, 2025

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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