HYDROGEN DIFFUSION BARRIER ON STEEL BY MEANS OF A PULSEDPLASMA ION-NITRIDING PROCESS

Details for Australian Patent Application No. 2003283083 (hide)

Owner COPPE/UFRJ - COORDENACAO DOS PROGRAMAS DE POS GRADUACAO DE ENGENHARIA DA UNIVERSIDADE FEDERAL DO RIO DE JANEIRO

Inventors MIRANDA, Paulo, Emilio, Valadao; FEUGEAS, Jorge, Nestor; TROTTA, Bianca, Prazim

Pub. Number AU-A-2003283083

PCT Number PCT/BR2003/0001

PCT Pub. Number WO2004/057051

Priority PI 0205419-1 20.12.02 BR

Filing date 19 November 2003

Wipo publication date 14 July 2004

International Classifications

C23C 008/36 Solid state diffusion into metallic material surfaces

Event Publications

25 March 2004 Complete Application Filed

  Priority application(s): PI 0205419-1 20.12.02 BR

19 August 2004 Application Open to Public Inspection

  Published as AU-A-2003283083

8 September 2005 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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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