Patents by Inventor Keun Chol Choi

Keun Chol Choi 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).

  • Compact fluorescent lamp
    Patent number: D447823
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: September 11, 2001
    Assignee: Jungwoo International Inc.
    Inventor: Keun Chol Choi
  • Fluorescent lamp
    Patent number: D448499
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: September 25, 2001
    Assignee: Jungwoo International Inc.
    Inventor: Keun Chol Choi
  • Fluorescent lamp
    Patent number: D448500
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: September 25, 2001
    Assignee: Jungwoo International Inc.
    Inventor: Keun Chol Choi
  • Compact fluorescent tube
    Patent number: D432687
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: October 24, 2000
    Assignee: Seil Electronics, Inc.
    Inventor: Keun Chol Choi