A REVERSIBLE INFORMATION CARRYING SYSTEM THAT TURNS FROM INVISIBLE TO READABLE

Details for Australian Patent Application No. 2002360625 (hide)

Owner SPECTRA SYSTEMS CORPORATION

Inventors LAWANDY, Nabil, M.

Pub. Number AU-A-2002360625

PCT Number PCT/US02/40256

PCT Pub. Number WO2003/052497

Priority 60/341,621 18.12.01 US

Filing date 18 December 2002

Wipo publication date 30 June 2003

International Classifications

G02F 001/13 Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating - based on liquid crystals, e.g. single liquid crystal display cells

B32B 007/02 Layered products characterised by the relation between layers, i.e. products essentially comprising layers having different physical properties or products characterised by the interconnection of layers - in respect of physical properties, e.g. hardness

G02F 001/133 Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating

G01K 011/12 Measuring temperature based on physical or chemical changes not covered by group , , , or

C09K 009/00 Tenebrescent materials, i.e. materials for which the range of wavelengths for energy adsorption is changed as a result of excitation by some form of energy

B41M 005/26 Duplicating or marking methods - Thermography

Event Publications

3 April 2003 Complete Application Filed

  Priority application(s): 60/341,621 18.12.01 US

28 August 2003 Application Open to Public Inspection

  Published as AU-A-2002360625

2 September 2004 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(f)/See Reg. 8.3(3). Examination has not yet been requested or directed for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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