Patents by Inventor Martin P. Amor

Martin P. Amor 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).

  • Electrochemically roughening aluminum sheet
    Patent number: 5449441
    Abstract: Aluminum sheet is electrochemically roughened for use as a lithographic printing plate support or as capacitor foil. The alternating current used for electrochemical roughening is initially biased in a first way, e.g. anodically, and then in a second way, e.g. cathodically. Each biased current is sufficient at least to initiate formation of a pitting structure on the surface of the sheet. The method allows improved control over the pitting structure and more rapid electrograining of the sheet.
    Type: Grant
    Filed: March 8, 1994
    Date of Patent: September 12, 1995
    Assignee: Alcan International Limited
    Inventors: Martin P. Amor, Peter R. Andrews, Jonathan Ball, Peter K. F. Limbach