Patents by Inventor Oh So Kwon

Oh So Kwon 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).

Electron gun for color cathode ray tubes with side electron-beam-passing apertures of plurality of circular arcs having different radii of curvature

Patent number: 6642646

Abstract: An in-line electron gun for a colored cathode ray tube has an electronic field correction plates with a central key-hole shaped aperture with two opposite straight lines and two side apertures each with a plurality of vertical and horizontal in addition to a plurality of circular arcs of different radii.

Type: Grant

Filed: November 15, 2001

Date of Patent: November 4, 2003

Assignee: Orion Electric Co., Ltd.

Inventor: Oh So Kwon

Electron gun for color cathode ray tubes with side electron-beam-passing apertures of plurality of circular arcs having different radii of curvature