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Expired European patentEurope

Dual-mode thickness-shear quartz pressure sensors for high pressure and high temperature applications

EP 1166072 B1 · Applicant: SCHLUMBERGER LIMITED

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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.

Why it's free to use

  • Filed April 10, 2000 and granted July 16, 2003. A European patent lasts at most 20 years from filing, so its term ended April 10, 2020.
  • 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 October 10, 2025.
  • 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.
FiledApril 10, 2000
PublishedJanuary 2, 2002
GrantedJuly 16, 2003
Term endedApril 10, 2020
Application numberEP 00923202
Classification (CPC)G01L9/0022

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedApril 10, 2000PublishedJan 2, 2002Patent grantedJuly 16, 2003Term endedApril 10, 2020

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