Patent Yard Sign in
Expired European patentEurope

Lubricating oil composition having improved oxidation stability at high temperatures

EP 1676902 B1 · Applicant: ChevronTexaco Japan Ltd

EPO PDF

Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

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.

Google PatentsEPO PDF

Why it's free to use

  • Filed December 23, 2005 and granted March 20, 2019. A European patent lasts at most 20 years from filing, so its term ended December 23, 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.
FiledDecember 23, 2005
PublishedJuly 5, 2006
GrantedMarch 20, 2019
Term endedDecember 23, 2025
Application numberEP 05258039
Classification (CPC)C10M163/00 +1 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedDec 23, 2005PublishedJuly 5, 2006Patent grantedMarch 20, 2019Term endedDec 23, 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

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