CHEMICALLY STRENGTHENED GLASS, SUBSTRATE FOR INFORMATION RECORDING MEDIUM AND INFORMATION RECORDING MEDIUM

Details for Australian Patent Application No. 2003275708 (hide)

Owner HOYA CORPORATION

Inventors ZOU, Xuelu; IKENISHI, Mikio

Pub. Number AU-A-2003275708

PCT Number PCT/JP03/13770

PCT Pub. Number WO2004/039738

Priority 2002-314903 29.10.02 JP

Filing date 28 October 2003

Wipo publication date 25 May 2004

International Classifications

C03C 003/087 Glass compositions

G11B 005/851 Recording by magnetisation or demagnetisation of a record carrier

C03C 021/00 Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals into the surface

C03C 017/34 Surface treatment of glass, e.g. of devitrified glass, not in the form of fibres or filaments, by coating - with at least two coatings having different compositions

G11B 005/73 Recording by magnetisation or demagnetisation of a record carrier

Event Publications

12 February 2004 Complete Application Filed

  Priority application(s): 2002-314903 29.10.02 JP

24 June 2004 Application Open to Public Inspection

  Published as AU-A-2003275708

14 July 2005 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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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