MAGNETIC RECORDING MEDIUM GLASS SUBSTRATE AND METHOD OF PRODUCING THE SAME

Details for Australian Patent Application No. 2003275576 (hide)

Owner NIPPON SHEET GLASS CO., LTD.

Inventors ISHII, Norimasa; MITANI, Kazuishi; SAITO, Yasuhiro; OKUHATA, Koji

Pub. Number AU-A-2003275576

PCT Number PCT/JP03/13462

PCT Pub. Number WO2004/042710

Priority 2002-308813 23.10.02 JP; 2002-379004 27.12.02 JP

Filing date 22 October 2003

Wipo publication date 7 June 2004

International Classifications

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

G11B 005/84 Recording by magnetisation or demagnetisation of a record carrier - Processes or apparatus specially adapted for manufacturing record carriers

C03C 015/00 Surface treatment of glass

C03C 019/00 Surface treatment of glass, not in the form of fibres or filaments, by mechanical means

C03C 023/00 Other surface treatment of glass not in the form of fibres or filaments

Event Publications

12 February 2004 Complete Application Filed

  Priority application(s): 2002-308813 23.10.02 JP; 2002-379004 27.12.02 JP

1 July 2004 Application Open to Public Inspection

  Published as AU-A-2003275576

14 July 2005 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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