ALEXANDRIA, Va., May 19 -- United States Patent no. 12,629,619, issued on May 19, was assigned to CHINA UNIVERSITY OF PETROLEUM-BEIJING (Beijing).
"Filter capable of automatically cutting off gas flow" was invented by Feng Chen (Beijing), Jinjie Lu (Beijing), Zhongli Ji (Beijing), Cheng Chang (Beijing), Zhen Liu (Beijing) and Xiaolin Wu (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "A filter capable of automatically cutting off gas flow, including: a housing (1) with a cavity, a filter element (2) disposed in the cavity, a blocking mechanism disposed in the flow channel (13), and an unblocking member (23). The housing is provided with an inlet end (11) and an outlet end (12). The filter element (2) ...