Patents by Inventor Seung D. Hong

Seung D. Hong 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).

  • Key holder
    Patent number: D349189
    Type: Grant
    Filed: November 2, 1993
    Date of Patent: August 2, 1994
    Assignee: Logos Co., Ltd.
    Inventor: Seung D. Hong
  • Roller ball pen
    Patent number: D354985
    Type: Grant
    Filed: March 10, 1993
    Date of Patent: January 31, 1995
    Assignee: Logos Co., Ltd.
    Inventor: Seung D. Hong
  • Roller ball pen
    Patent number: D358843
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: May 30, 1995
    Assignee: Logos Co., Ltd.
    Inventor: Seung D. Hong