Patents by Inventor Ju Ok Seo

Ju Ok Seo 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).

  • Method for fabricating a semiconductor laser diode
    Patent number: 5707892
    Abstract: A method for fabricating a semiconductor laser diode includes the steps of forming a double hetero structured semiconductor layer on a substrate, forming a dielectric layer on the double hetero structured semiconductor layer, selectively etching the dielectric layer to expose a portion of the double hetero structured semiconductor layer, selectively removing the exposed semiconductor layer using the dielectric layer as a mask by liquid phase etching, and re growing a semiconductor layer on the etched portion by liquid phase epitaxy.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: January 13, 1998
    Assignee: LG Electronics, Inc.
    Inventors: Tae Kyung Yoo, Meoung Whan Cho, Ju Ok Seo, Shi Jong Leem, Min Soo Noh