ALEXANDRIA, Va., June 25 -- United States Patent no. 12,339,208, issued on June 24, was assigned to CHANGXIN MEMORY TECHNOLOGIES INC. (Hefei, China).

"Material handling system and monitoring system and monitoring method for particles in traveling area of overhead hoist transfers" was invented by Yuanzhang Qin (Anhui, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present application discloses a material handling system and a monitoring system and a monitoring method for particles in a traveling area of overhead hoist transfers, wherein the monitoring system for particles in the overhead hoist transfer traveling area comprises gas sampling modules, a particle counter and a monitoring device. The gas...