Patents by Inventor John Andrew Ward

John Andrew Ward has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Aluminium alloy sheet with roughened surface
    Patent number: 8012333
    Abstract: There is disclosed a process for producing an aluminium alloy sheet, which comprises subjecting a surface of the sheet to anodising conditions to form on the surface an aluminium oxide barrier layer of thickness 10 to 50 nm and treating the oxide layer with an aqueous solution of alkali to remove the layer, thereby leaving a roughened surface on the alloy sheet.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: September 6, 2011
    Assignee: Novelis Inc.
    Inventors: John Andrew Ward, Jonathan Ball, Martin Philip Amor
  • Aluminium alloy for lithographic sheet
    Publication number: 20110056595
    Abstract: The invention discloses an Al alloy suitable for processing into a lithographic sheet, the alloy having a composition in wt %: Mg 0.05 to 0.30, Mn 0.05 to 0.25, Fe 0.11 to 0.40, Si up to 0.25, Ti up to 0.03, B up to 0.01, Cu up to 0.01, Cr up to 0.03, Zn up to 0.15, unavoidable impurities up to 0.05 each, 0.15 total, Al balance. Also disclosed is a method of processing the Al alloy.
    Type: Application
    Filed: November 5, 2010
    Publication date: March 10, 2011
    Inventors: Theodore Rottwinkel, David Skingley Wright, Richard Gary Hamerton, Jeremy Mark Brown, John Andrew Ward
  • Alloy for lithographic sheet
    Patent number: 7789978
    Abstract: There is disclosed an Al alloy suitable for processing into a lithographic sheet, the alloy having a composition in wt %: Fe up to 0.4; Si up to 0.25; Ti up to 0.05; Cu up to 0.05; Zr up to 0.005; Cr up to 0.03; Ni up to 0.006; V up to 0.03; Zn up to 0.008 to 0.15; Mg up to 0.30; Mn up to 1.5. Unavoidable impurities up to 0.05 wt % total Al balance. The alloy allows production of the required surface for lithographic sheet over a wide range of process conditions.
    Type: Grant
    Filed: September 11, 2002
    Date of Patent: September 7, 2010
    Assignee: Novelis Inc.
    Inventor: John Andrew Ward
  • Aluminium alloy sheet with roughened surface
    Publication number: 20040232001
    Abstract: There is disclosed a process for producing an aluminium alloy sheet, which comprises subjecting a surface of the sheet to anodising conditions to form on the surface an aluminium oxide barrier layer of thickness 10 to 50 nm and treating the oxide layer with an aqueous solution of alkali to remove the layer, thereby leaving a roughened surface on the alloy sheet.
    Type: Application
    Filed: June 8, 2004
    Publication date: November 25, 2004
    Inventors: John Andrew Ward, Jonathan Ball, Martin Philip Amor
  • Aluminium alloy for lithographic sheet
    Publication number: 20040047759
    Abstract: The invention discloses an Al alloy suitable for processing into a lithographic sheet, the alloy having a composition in wt %: Mg 0.05 to 0.30, Mn 0.05 to 0.25, Fe 0.11 to 0.40, Si up to 0.25, Ti up to 0.03, B up to 0.01, Cu up to 0.01, Cr up to 0.03, Zn up to 0.15, unavoidable impurities up to 0.05 each, 0.15 total Al balance. Also disclosed is a method of processing the Al alloy.
    Type: Application
    Filed: October 8, 2003
    Publication date: March 11, 2004
    Inventors: Theodor Rottwinkel, David Skingley Wright, Richard Gary Hamerton, Jeremy Mark Brown, John Andrew Ward