CHEMICAL SURFACE TREATMENT METHOD OF PISTON RING

Details for Australian Patent Application No. 2002367887 (hide)

Owner BLUE SKY ENVIRONMENTAL PROTECTION (HOLDINGS) LIMITED

Inventors LIANG, Jiaxiang

Pub. Number AU-A-2002367887

PCT Number PCT/CN02/00783

PCT Pub. Number WO2003/091479

Priority 02118622.7 26.04.02 CN

Filing date 4 November 2002

Wipo publication date 10 November 2003

International Classifications

C23C 022/03 Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals

F02F 005/00 Piston rings, e.g. associated with piston crown

F16J 009/26 Piston-rings, seats therefor - characterised by the use of particular materials

Event Publications

11 December 2003 Complete Application Filed

  Priority application(s): 02118622.7 26.04.02 CN

18 December 2003 Application Open to Public Inspection

  Published as AU-A-2002367887

2 June 2005 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired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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