ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,482,645, issued on Nov. 25, was assigned to SHIMADZU Corp. (Kyoto, Japan).
"Mass spectrometer" was invented by Masaru Nishiguchi (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present mass spectrometer has one or more intermediate vacuum chambers between an ion source to generate ions derived from a sample component in an atmospheric pressure atmosphere and a vacuum chamber where a mass separator is arranged, including an ion transport unit to have an ion outlet in a first intermediate vacuum chamber at a subsequent stage of the ion source and send ions to the first chamber, an exhaust opening portion to evacuate the first chamber, whi...