Patents by Inventor Yae-kyung Sung

Yae-kyung Sung 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).

  • Writing tool
    Patent number: 6817800
    Abstract: A writing tool provided with enhanced and having a plurality of buttons arranged on lateral sides of the writing tool, whereby choice of raw materials for the tool are not limited and the writing tool has an improved endurance and productivity as they can be made of materials with excellent properties required in injection molding.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: November 16, 2004
    Assignee: Morris Pen Corporation
    Inventor: Yae Kyung Sung
  • Writing instrument
    Patent number: D495002
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: August 24, 2004
    Assignee: Morris Corporation
    Inventor: Yae-kyung Sung