Patents by Inventor Duk-Hyun Choe

Duk-Hyun Choe 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).

  • Color selection apparatus for cathode ray tube
    Patent number: 6545401
    Abstract: A color selection apparatus for a cathode ray tube includes an iron mask having a longitudinal axis and a short axis and a frame coupled with the mask and tensing the mask in one direction of the longitudinal and short axes.
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: April 8, 2003
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Kuen-Dong Ha, Kwang-Sik Lee, Arimoto Nozomu, Duk-Hyun Choe, Hoo-Deuk Kim, Gui-Bae Kim, Woo-Il Park
  • Color selection apparatus for cathode ray tube
    Publication number: 20020079814
    Abstract: A color selection apparatus for a cathode ray tube includes an iron mask having a longitudinal axis and a short axis and a frame coupled with the mask and tensing the mask in one direction of the longitudinal and short axes.
    Type: Application
    Filed: August 29, 2001
    Publication date: June 27, 2002
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Kuen-Dong Ha, Kwang-Sik Lee, Arimoto Nozomu, Duk-Hyun Choe, Hoo-Deuk Kim, Gui-Bae Kim, Woo-Il Park