US Patent Issued to BEIJING BEISHUTE MATERNITY & CHILD ARTICLES on Feb. 4 for "Manufacturing process and apparatus for duckbill mask" (Chinese Inventors)

ALEXANDRIA, Va., Feb. 5 -- United States Patent no. 12,213,551, issued on Feb. 4, was assigned to BEIJING BEISHUTE MATERNITY & CHILD ARTICLES Co. LTD (Beijing).

"Manufacturing process and apparatus for duckbill mask" was invented by Qiuhong Li (Beijing) and Donghao Cai (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "A duckbill mask includes a mask upper side and a mask lower side. A manufacturing process includes: respectively performing edge folding and press sealing on an upper nose edge on the mask upper side and a jaw edge on the mask lower side, and using a double-way staggered cutting process to add a nose bridge while folding the upper nose edge; and overlapping the mask upper side and the mas...