Patents by Inventor Yiwu ZHAO

Yiwu ZHAO 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).

  • MASK
    Publication number: 20230076594
    Abstract: A mask includes a body, a length adjustment member and a self-adaptive member. The body has an upper edge. The length adjustment member and the self-adaptive member are provided at the upper edge of the body. The self-adaptive member is provided at an inner side of the length adjustment member. The length adjustment member is bendable along a curve of a face and is able to act on the self-adaptive member, such that the self-adaptive member is deformed by force and adapted to the curve of the face to fit on the face.
    Type: Application
    Filed: December 31, 2020
    Publication date: March 9, 2023
    Inventors: Yiwu ZHAO, Jianchun LU, Renyao LI, Dongmei FAN, Liang ZHANG, Yun LIU, Xiang DONG