Patents by Inventor Ki W. Jung

Ki W. Jung 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).

  • Semiconductor laser diode
    Patent number: 5436466
    Abstract: A semiconductor laser diode of a double hetero structure including a semiconductor substrate, a buffer layer, a clad layer of a first conductivity type, an active layer and a clad layer of a second conductivity type, all layers being sequentially formed over the substrate, characterized by an intermediate layer interposed at at least one of a region between the substrate and the first clad layer and a region between the second clad layer and the cap layer, the intermediate layer being adapted to reduce a series resistance component and thus make a flow of current smooth.
    Type: Grant
    Filed: August 12, 1993
    Date of Patent: July 25, 1995
    Assignee: Goldstar Co., Ltd.
    Inventors: Hyun C. Ko, Ki W. Jung, Jong S. Kim, Won J. Choi