Pressure sensor

Details for Australian Patent Application No. 2007306056 (hide)

Owner SCHLUMBERGER HOLDINGS LTD

Inventors Roberts, Richard Damon Goodman

Agent Griffith Hack

Pub. Number AU-A-2007306056

PCT Pub. Number WO2008/044074

Priority 0620339.2 12.10.06 GB

Filing date 12 October 2007

Wipo publication date 17 April 2008

International Classifications

G01L 11/02 (2006.01) Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group or

G01L 1/24 (2006.01) Measuring force or stress, in general - by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis

G01M 11/02 (2006.01) Testing of optical apparatus - Testing of optical properties

Event Publications

30 April 2009 PCT application entered the National Phase

  PCT publication WO2008/044074 Priority application(s): WO2008/044074

10 December 2009 Assignment before Grant

  SCHLUMBERGER HOLDINGS LTD The application has been assigned to Schlumberger Technology B.V.

20 October 2011 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(a). A direction to request examination has been given for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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