Patents Assigned to Dowty Electronics Limited
  • Vacuum deposition apparatus
    Patent number: 4412905
    Abstract: A vacuum deposition apparatus including a cathode, an anode associated with the substrate to be coated and permanent magnet means whose lines of force are directed substantially parallel to the surface of the substrate, at least closely adjacent to that surface, and whose strength is such as to divert high-energy electrons away from the surface in order substantially to prevent them bombarding that surface.
    Type: Grant
    Filed: April 27, 1983
    Date of Patent: November 1, 1983
    Assignee: Dowty Electronics Limited
    Inventor: Mohammed N. Khan