ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,507,909, issued on Dec. 30, was assigned to SHENZHEN BREATHA BIOTECHNOLOGY Co. LTD (Guangdong, China).
"Handheld exhaled gas collection device" was invented by Hang Li (Guangdong, China) and Dongjian Wang (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A handheld exhaled gas collection device includes a gas access mechanism, a gas detection mechanism, a rotary valve and a gas collection mechanism connected in sequence, as well as sensors, a main processor and a blowback mechanism. The sensors are disposed on an outer side of the gas detection mechanism and are used to detect state parameters of an inhaled gas and transmit the collected ...