ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,494,356, issued on Dec. 9, was assigned to SHIMADZU Corp. (Kyoto, Japan).
"Mass spectrometer" was invented by Shinjiro Fujita (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "In a mass spectrometer, a detector generates a current-pulse signal corresponding to an incident ion, with a gain corresponding to a detector voltage which is given by a voltage-generating section. A branching section divides, into branches, a voltage-pulse signal which is based on the current-pulse signal taken from the detector's anode. A pulse-counting section detects the signal one branch by a pulse-count method. An analog detection section detects the signal in anot...