Patents by Inventor Sun Il Cho

Sun Il Cho 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).

  • Kimchi refrigerator
    Patent number: D501489
    Type: Grant
    Filed: August 19, 2003
    Date of Patent: February 1, 2005
    Assignee: LG Electronics Inc.
    Inventors: Woon Kyu Seo, Sun Il Cho
  • Charger for vacuum cleaners
    Patent number: D645403
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: September 20, 2011
    Assignee: LG Electronics Inc.
    Inventors: Woon Kyu Seo, Dae Sung Lee, Young Soo Ha, Sun Il Cho
  • Combined vacuum cleaner and charger
    Patent number: D670458
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: November 6, 2012
    Assignee: LG Electronics Inc.
    Inventors: Woon Kyu Seo, Dae Sung Lee, Young Soo Ha, Sun Il Cho
  • Vacuum cleaner
    Patent number: D671695
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: November 27, 2012
    Assignee: LG Electronics Inc.
    Inventors: Woon Kyu Seo, Dae Sung Lee, Young Soo Ha, Sun Il Cho
  • Kimchi refrigerator
    Patent number: D672374
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: December 11, 2012
    Assignee: LG Electronics Inc.
    Inventors: Kyu Kwan Choi, Sun Il Cho, Seon Kyu Kim, Sin Eun Kang, Jae Young Kim
  • Cold air discharge duct for kimchi refrigerators
    Patent number: D673588
    Type: Grant
    Filed: November 28, 2011
    Date of Patent: January 1, 2013
    Assignee: LG Electronics Inc.
    Inventors: Kyu Kwan Choi, Sun Il Cho, Seon Kyu Kim, Sin Eun Kang, Jae Young Kim