Patents by Inventor Sul Ki Lee

Sul Ki Lee 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).

  • Air purifier
    Patent number: D755942
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: May 10, 2016
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Young Jo Kim, Kyoung Hwa Maeng, Sul Ki Lee
  • Air purifier
    Patent number: D875228
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: February 11, 2020
    Assignee: Coway Co., Ltd.
    Inventors: Sul Ki Lee, Young Jo Kim
  • Air purifier
    Patent number: D899572
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: October 20, 2020
    Assignee: Coway Co., Ltd.
    Inventors: Sul Ki Lee, Mikyung Kim, Jong Ho Choi, Ga Hee Kim
  • Air purifier
    Patent number: D912235
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: March 2, 2021
    Assignee: Coway Co., Ltd.
    Inventors: Sul Ki Lee, Mikyung Kim, Jong Ho Choi, Ga Hee Kim
  • Air purifier
    Patent number: D921866
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: June 8, 2021
    Assignee: COWAY Co., Ltd.
    Inventors: Jong Ho Choi, Sul Ki Lee, Ga Hee Kim
  • Air purifier
    Patent number: D937397
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: November 30, 2021
    Assignee: COWAY Co., Ltd.
    Inventors: Jong Ho Choi, Sul Ki Lee, Ga Hee Kim
  • Air purifier
    Patent number: D954240
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: June 7, 2022
    Assignee: COWAY Co., Ltd.
    Inventors: Jong Ho Choi, Sul Ki Lee, Ga Hee Kim