ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,841, issued on Feb. 3.
"Particulate matter batching apparatus" was invented by Yuanhao Zhou (Pittsburgh), Zhengyang Liu (Pittsburgh) and Hong Chen (Pittsburgh).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a particulate matter batching apparatus. A plurality of particulate matter batching devices are arranged at intervals around the rotating axis, thereby enabling each particulate matter batching device to enter the discharging position. Particulate matter in the batching container can be controlled to start or stop passing through the discharging port through the discharging adjusting mechanism, thereby enabling the particulate matter i...