ALEXANDRIA, Va., June 10 -- United States Patent no. 12,292,324, issued on May 6, was assigned to Mettler-Toledo (Changzhou) Measurement Technology Ltd. (Changzhou, China), Mettler-Toledo (Changzhon) Precision Instruments Ltd. (Changzhou, China) and Mettler-Toledo International Trading (Shanghai) Co. Ltd. (Shanghai).

"Weight stability control method for deadweight force standard machine" was invented by Hanqing Xu (Changzhou, China) and Leiyue Zhang (Changzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "These disclosures provide a weight stability control method for a deadweight force standard machine. For each weight in a sequence until all weights are loaded: weight platform is relatively rapidly...