ALEXANDRIA, Va., March 5 -- United States Patent no. 12,243,736, issued on March 4, was assigned to SHANGHAI POLARIS BIOLOGY Co. LTD. (Shanghai).
"Particle mass spectrometry" was invented by Yupeng Cheng (Shanghai) and Shuangwu Sun (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods are provided for the analysis of single particles with inductively coupled plasma-time of flight mass spectrometry. An ion compression device is operated in combination with an image current detector to improve a duty cycle of particle analysis. The image current detection device is used to determine a start time and an end time of a separate ion cloud which is derived from a single particle. The ion comp...