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Expired European patentEurope

Low thermal response time surface acoustic wave pressure sensors

EP 0192903 B1 · Applicant: SCHLUMBERGER LIMITED

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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 December 10, 1985 and granted August 14, 1991. A European patent lasts at most 20 years from filing, so its term ended December 10, 2005.
  • 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 June 10, 2011.
  • 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 10, 1985
PublishedSeptember 3, 1986
GrantedAugust 14, 1991
Term endedDecember 10, 2005
Application numberEP 85402446
Classification (CPC)G01L9/0025

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedDec 10, 1985PublishedSep 3, 1986Patent grantedAug 14, 1991Term endedDec 10, 2005

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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