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Expired European patentEurope

Low sulfur, low ash, and low phosphorus lubricant additive package, using an alkylamine salt of a dialkylmonothiophosphate

EP 1502939 B1 · Applicant: Afton Chemical Intangibles 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 July 29, 2004 and granted August 31, 2011. A European patent lasts at most 20 years from filing, so its term ended July 29, 2024.
  • 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.
FiledJuly 29, 2004
PublishedFebruary 2, 2005
GrantedAugust 31, 2011
Term endedJuly 29, 2024
Application numberEP 04254564
Classification (CPC)C10M163/00 +1 more

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedJuly 29, 2004PublishedFeb 2, 2005Patent grantedAug 31, 2011Term endedJuly 29, 2024

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

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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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