Patents by Inventor Sung D. Hong

Sung D. Hong 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: 4125088
    Abstract: A device for coating, with a carbon material, the inner surface of a cathode ray tube having a neck and flared or cone end portion which is opened at its end remote from the neck along a free peripheral edge portion to which the front panel of the completed cathode ray tube is later secured. The device includes a frame on which a turntable is rotatably mounted and supports, for rotation therewith, a seal assembly for selectively forming a seal on the inner surface of the flared portion of the cathode ray tube adjacent the free edge thereof. The tube is supported on the turntable adjacent the seal assembly along its peripheral edge, and the assembly includes an expandable seal strip generally complementary to the internal configuration of the tube along which the seal is to be formed, so that upon expansion of the seal strip a tight seal is formed against the tube.
    Type: Grant
    Filed: January 21, 1977
    Date of Patent: November 14, 1978
    Assignee: Sony Corporation
    Inventors: Sung D. Hong, Ray Boggs, Shinzo Takei