High-strength steel sheets which are extremely excellent in the balance between burring workability and ductility and excellent in fatigue endurance, zinc-coated steel sheets, and processes for production of both

Details for Australian Patent Application No. 2009234667 (hide)

Owner Nippon Steel Corporation

Inventors Azuma, Masafumi; Maruyama, Naoki; Yoshinaga, Naoki; Suzuki, Noriyuki; Murasato, Akinobu

Agent Spruson & Ferguson

Pub. Number AU-B-2009234667

PCT Pub. Number WO2009/125874

Priority 2008-102851 10.04.08 JP

Filing date 9 April 2009

Wipo publication date 15 October 2009

Acceptance publication date 8 March 2012

International Classifications

C22C 38/00 (2006.01) Ferrous alloys, e.g. steel alloys

C21D 9/46 (2006.01) Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles - for sheet metals

C22C 38/06 (2006.01) Ferrous alloys, e.g. steel alloys - containing aluminium

C22C 38/58 (2006.01) Ferrous alloys, e.g. steel alloys - with more than 1.5% by weight of manganese

C23C 2/06 (2006.01) Coating by applying the coating material in the molten state - Zinc or cadmium or alloys based thereon

C23C 2/28 (2006.01) Coating by applying the coating material in the molten state - Thermal after-treatment, e.g. treatment in oil bath

Event Publications

4 November 2010 PCT application entered the National Phase

  PCT publication WO2009/125874 Priority application(s): WO2009/125874

8 March 2012 Application Accepted

  Published as AU-B-2009234667

5 July 2012 Standard Patent Sealed

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