ALEXANDRIA, Va., June 5 -- United States Patent no. 12,274,829, issued on April 15, was assigned to DCSTAR INC (New York).
"Respiratory mask with sponge and fabric" was invented by David Luo (New York).
According to the abstract* released by the U.S. Patent & Trademark Office: "A respiratory mask configured to adapt and comfortably seal according to the facial features of different users. The respiratory mask includes a support chamber, a cushioning part, and a comfort layer. The support chamber has curved sidewalls and two circular openings of varying sizes. The cushioning part includes of an elastic body and a sponge body. The fixed side of the elastic body is connected to the support chamber. The sponge body has a curved side and a con...