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Borehole fluid containing a lubricating composition - method for verifying the lubrification of a borehole fluid - application with respect to fluids with a high ph

EP 1092003 B1 · Applicant: Institut Français du Pétrole

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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 June 9, 1999 and granted April 21, 2004. A European patent lasts at most 20 years from filing, so its term ended June 9, 2019.
  • 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 December 9, 2024.
  • 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.
FiledJune 9, 1999
PublishedApril 18, 2001
GrantedApril 21, 2004
Term endedJune 9, 2019
Application numberEP 99923707
Classification (CPC)C10M173/02 +2 more

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedJune 9, 1999PublishedApril 18, 2001Patent grantedApril 21, 2004Term endedJune 9, 2019

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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