Patents by Inventor Dong Yeon Ryu

Dong Yeon Ryu 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).

  • Safety helmet
    Patent number: D704896
    Type: Grant
    Filed: March 20, 2013
    Date of Patent: May 13, 2014
    Assignee: K.M.W. Inc.
    Inventors: Dong Yeon Ryu, Min Soo Kim, Jae Won Lee
  • Laser medical device
    Patent number: D867602
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: November 19, 2019
    Assignee: HIRONIC CO., LTD.
    Inventors: Dong Yeon Ryu, Hye Jung Kim, Seung Gyu Jeon
  • Medical skin care device
    Patent number: D940879
    Type: Grant
    Filed: November 15, 2019
    Date of Patent: January 11, 2022
    Assignee: HIRONIC CO., LTD.
    Inventors: Dong Yeon Ryu, Ha Gyeong Seong