Patents by Inventor Kern K. Nan Chang

Kern K. Nan Chang 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).

  • Insulating mount for a CRT Einzel lens focus mask
    Patent number: 4602186
    Abstract: A CRT has an Einzel lens focus mask with a high voltage between the shadow mask and the meshes to achieve a strong focusing action and therefore minimize beam current interception by the shadow mask. The mask is supported by an insulating block inside a tube. During gettering, the getter material does not deposit on the inside of the tube and therefore spurious conduction paths are avoided. Thus the support can withstand the high voltage. A lead-in wire for the mask has a tube surrounding it which is open near the mask. This also withstands the high voltage.
    Type: Grant
    Filed: August 17, 1984
    Date of Patent: July 22, 1986
    Assignee: RCA Corporation
    Inventor: Kern K. Nan Chang