Patents by Inventor Alaric G Spencer

Alaric G Spencer 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).

  • Magnet array for magnetrons
    Patent number: 6159351
    Abstract: The invention relates to improvements and the formation of magnetrons for use in sputter depositing material from a targeted material mounted therein. The improvement allows contamination of the target to be reduced in comparison to those of conventional magnetrons, arcing of the magnetron to be reduced, and the deficiency and quality of the coating process and target utilization to be enhanced by providing an array of magnets around the periphery of the target in addition to a first array of magnets to the rear of the target, thus causing the effect of the magnetic field on the target to be substantially uniform.
    Type: Grant
    Filed: April 23, 1999
    Date of Patent: December 12, 2000
    Assignee: Applied Vision Limited
    Inventors: Hussain J'Afer, John M Walls, Alaric G Spencer, Allen R Waugh, Norman H White