Patents by Inventor Shih-Hsiung Cho

Shih-Hsiung 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).

  • Valve structure for respirator
    Patent number: 10967206
    Abstract: A valve structure for a respirator includes a base, an upper cover, a membrane and a discharge device, wherein an outer side of an upper annular wall of the upper cover is provided with multiple L-shaped engagement blocks, and a combination hole of the discharge device is provided with multiple L-shaped engagement blocks embedded with the L-shaped engagement blocks of the upper annular wall, so that the discharge device is combined with the upper cover.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: April 6, 2021
    Assignee: MAKRITE INDUSTRIES INC.
    Inventor: Shih-Hsiung Cho
  • VALVE STRUCTURE FOR RESPIRATOR
    Publication number: 20190217133
    Abstract: A valve structure for a respirator includes a base, an upper cover, a membrane and a discharge device, wherein an outer side of an upper annular wall of the upper cover is provided with multiple L-shaped engagement blocks, and a combination hole of the discharge device is provided with multiple L-shaped engagement blocks embedded with the L-shaped engagement blocks of the upper annular wall, so that the discharge device is combined with the upper cover.
    Type: Application
    Filed: January 16, 2018
    Publication date: July 18, 2019
    Inventor: SHIH-HSIUNG CHO
  • Face mask
    Patent number: D844253
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: March 26, 2019
    Assignee: Makrite Industries Inc.
    Inventor: Shih-Hsiung Cho