Patents Assigned to W. H. Brady Company
  • Ultraviolet light generation
    Patent number: 4274028
    Abstract: Apparatus for generating ultraviolet light of high intensity without production of heat, including an anode cathodoluminescent layer composed of a phosphor luminescent in the ultraviolet spectrum, a cold cathode electron emitting layer separated by an evacuated region from the cathodoluminescent layer, and a direct current electric field generated between cathode and anode across the evacuated region.
    Type: Grant
    Filed: August 13, 1979
    Date of Patent: June 16, 1981
    Assignee: W. H. Brady Company
    Inventor: Norman J. Frame