ALEXANDRIA, Va., March 24 -- United States Patent no. 12,586,770, issued on March 24, was assigned to SHIMADZU Corp. (Kyoto, Japan).
"Mass spectrometer" was invented by Yoshihiro Ueno (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "One mode of the mass spectrometer according to the present invention is a mass spectrometer including an ion source configured to ionize a component contained in a sample gas, the ion source including: an ionization chamber having an ion ejection opening and forming a space substantially partitioned from an outside inside the ionization chamber; a thermal electron supply unit configured to supply thermal electrons to an inside of the ionization chamber; a magnetic fie...