Patents by Inventor John A. Treverton

John A. Treverton 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).

  • Lithographic plate, and method for making, having an oxide layer derived from a type A sol
    Patent number: 5345869
    Abstract: A lithographic plate comprising a substrate carrying an oxide layer derived from a Type A sol is disclosed. The substrate may be metal, e.g. aluminum or steel, and may be in a mill finished state or grained or otherwise profiled. Type A sols have polynuclear cations but no specific particles and may be formed by peptising basic salts with acids. The sol may include an inorganic passenger powder which may impart a desired topography to the coating layer.
    Type: Grant
    Filed: September 30, 1992
    Date of Patent: September 13, 1994
    Assignee: Alcan International Limited
    Inventors: John A. Treverton, Jonathan Ball