Patents by Inventor Nayoung Heo

Nayoung Heo 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).

  • Sanitary mask
    Patent number: D977086
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: January 31, 2023
    Assignee: R&F Chemical Co., Ltd.
    Inventors: Dongil Park, Soojeong Lee, Nayoung Heo, Junyeop Shim, Jaehong Lee