Measurement of residual and thermallyinduced stress in a rail

Details for Australian Patent Application No. 2004215154 (hide)

Owner MAPS Technology Limited

Inventors Dalzell, William; Buttle, David John; Thayer, Peter John

Agent Griffith Hack

Pub. Number AU-B-2004215154

PCT Pub. Number WO2004/077003

Priority 0304192.8 25.02.03 GB

Filing date 13 February 2004

Wipo publication date 10 September 2004

Acceptance publication date 30 October 2008

International Classifications

G01L 1/12 (2006.01) Measuring force or stress, in general - by measuring variations in the magnetic properties of materials resulting from the application of stress

G01L 5/00 (2006.01) Apparatus for, or methods of, measuring force, e.g. due to impact, work, mechanical power, or torque, adapted for special purposes

G01N 27/72 (2006.01) Investigating or analysing materials by the use of electric, electro-chemical, or magnetic means - by investigating magnetic variables

Event Publications

21 July 2005 PCT application entered the National Phase

  PCT publication WO2004/077003 Priority application(s): WO2004/077003

2 November 2006 Assignment before Grant

  AEA Technology PLC The application has been assigned to ESR Technology Ltd

6 December 2007 Assignment before Grant

  ESR Technology Limited The application has been assigned to MAPS Technology Limited

30 October 2008 Application Accepted

  Published as AU-B-2004215154

26 February 2009 Standard Patent Sealed

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