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Expired European patentEurope

Lubricating oil composition

EP 0768366 B1 · Applicant: TONEN 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 October 10, 1996 and granted June 13, 2001. A European patent lasts at most 20 years from filing, so its term ended October 10, 2016.
  • 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 April 10, 2022.
  • 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.
FiledOctober 10, 1996
PublishedApril 16, 1997
GrantedJune 13, 2001
Term endedOctober 10, 2016
Application numberEP 96307382
Classification (CPC)C10M135/08 +2 more

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedOct 10, 1996PublishedApril 16, 1997Patent grantedJune 13, 2001Term endedOct 10, 2016

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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