Patents by Inventor Woong B. Choi

Woong B. Choi 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).

  • Patent number: 5252889
    Abstract: A color CRT with a first bimetal correction means provided between the inner wall of the screen panel and the shadow mask for correcting the mislanding of the electron beams due to the thermal expansion of the shadow mask, and a second bimetal correction means provided between the lower end portion of the skirt of the shadow mask and the inner wall of the mask frame for quickly correcting the initial doming of the shadow mask, thereby correcting the mislanding occurring in the beginning stage of operating the color CRT.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: October 12, 1993
    Assignee: GoldStar Co., Ltd.
    Inventor: Woong B. Choi
  • Patent number: 5220242
    Abstract: A high resistance body for supplying the high voltage of an anode terminal to the electrodes of an electron gun is coil-shaped. The anode terminal is mounted on the funnel portion of a glass bulb, and overlapped by a first conducting layer. The anode terminal is electrically connected to the electrodes of the electron gun comprising the coil-shaped high resistance body, second conducting layer and metal strip. The equivalent circuit comprises a resistance and condenser connected in parallel, at least an inductance generated by the coil-shaped high resistance body connected in series to the resistance, and the electrodes of the electron gun.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: June 15, 1993
    Assignee: Goldstar Co., Ltd.
    Inventor: Woong B. Choi