Patents by Inventor Ja Ryung Koo

Ja Ryung Koo 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).

  • Video cassette recorder
    Patent number: D384057
    Type: Grant
    Filed: September 19, 1995
    Date of Patent: September 23, 1997
    Assignee: LG Electronics Inc.
    Inventors: Myun Woo Lee, Ja Ryung Koo, Eui Jeong Kim, Jae Hyung Byun
  • Video cassette recorder
    Patent number: D392966
    Type: Grant
    Filed: September 19, 1995
    Date of Patent: March 31, 1998
    Assignee: LG Electronics, Inc.
    Inventors: Myun Woo Lee, Ja Ryung Koo, Eui Jeong Kim, Jae Hyung Byun