US Patent Issued to Ping Li on July 7 for "Mask" (Chinese Inventors)

ALEXANDRIA, Va., July 7 -- United States Patent no. 12,673,225, issued on July 7, was assigned to Ping Li (Shanghai).

"Mask" was invented by Ping Li (Shanghai) and Xiangyu Zhang (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A mask is provided according to the present application. The mask includes a mask body with filtering performance and a flexible support frame. The support frame is arranged in the mask body and connected to the mask body. The mask body includes a first filter area corresponding to the support frame and a second filter area surrounding the support frame. While the mask is in use, the support frame supports the mask body, so that the first filter area and at least part of the se...