公开(公告)号：US20200227246A1

公开(公告)日：2020-07-16

申请号：US16244234

申请日：2019-01-10

Applicant: SHIMADZU CORPORATION

Inventor： Kei Kodera ,  Masaji Furuta

IPC: H01J49/40 ,  H01J49/16 ,  H01J49/14

Abstract: A metallic plate holder 3 is directly placed on a flat bottom plate 1a of a sample chamber. A linear guide 21 extending in x-direction is located below the bottom plate. Another linear guide 22 extending in y-direction is fixed to a movable part 21a of the linear guide 21. A magnet 23, fixed to a movable part 22a of the linear guide 22, magnetically attracts the plate holder across the bottom plate. When the magnet is two-dimensionally driven by the linear guides, the plate holder follows it and moves two-dimensionally. The flat bottom plate limits the z-position of the plate holder, thereby reducing the fluctuation in the level of the sample on a sample plate 2 due to the movement. Thus, the variation in the level at different positions on the sample plate is reduced, so that the number of times of a calibrant measurement can be decreased.

公开(公告)号：US12238849B2

公开(公告)日：2025-02-25

申请号：US18026245

申请日：2021-04-26

Applicant: SHIMADZU CORPORATION

Inventor： Masaji Furuta

IPC: H05H1/30 ,  G01N27/623 ,  H01J49/26

Abstract: A radical generation device includes: a cylindrical tube; an antenna; an outer conductor part; and a connection part which has a double cylindrical tube structure including an inner cylindrical body and an outer cylindrical body, end portions of the inner cylindrical body and the outer cylindrical body on the same side are divided in a circumferential direction notches extending in an axial direction to form divided pieces, and tapered portions swelling outward toward a tip end are formed on an outer side of the divided pieces or tapered portions swelling inward toward a tip end are formed on an inner side of the divided pieces.

公开(公告)号：US11915865B2

公开(公告)日：2024-02-27

申请号：US16978349

申请日：2018-12-04

Applicant: SHIMADZU CORPORATION

Inventor： Masaji Furuta ,  Kei Kodera ,  Kiyoshi Watanabe

IPC: H01F7/06 ,  H01J49/04

CPC classification number: H01F7/064 ,  H01J49/0418

Abstract: A movable-side magnet is provided to a movable portion in a vacuum chamber. A drive unit is provided outside the vacuum chamber, and drives the movable portion by exerting magnetic force on the movable-side magnet. The drive unit has a first magnet, a second magnet, and a moving mechanism (moving member). The first magnet exerts magnetic force of attracting the movable-side magnet. The second magnet is provided to be adjacent to the first magnet, and exerts magnetic force of repelling the movable-side magnet. The moving mechanism integrally moves the first magnet and the second magnet.

公开(公告)号：US12203886B2

公开(公告)日：2025-01-21

申请号：US17600489

申请日：2019-05-15

Applicant: SHIMADZU CORPORATION

Inventor： Shosei Yamauchi ,  Masaji Furuta ,  Kosuke Hosoi

IPC: G01N27/64 ,  H01J49/16 ,  H01J49/24

Abstract: An ion analyzer 1 includes: an ionization chamber 10; an ionization unit 3 configured to generate ions from a sample 11 in the ionization chamber 10; an analysis chamber 20 separated from the ionization chamber 10 by a partition wall 21 in which an opening 211 is formed; an ion transport unit 22, 23, and 24 provided in the analysis chamber 20 and configured to transport the ions generated in the ionization unit; an ion trapping unit 25 provided in the analysis chamber 20 and configured to trap the ions transported by the ion transport unit 22, 23, and 24; an ion detection unit 26 provided in the analysis chamber 20 and configured to detect the ions released from the ion trapping unit 25; and a single evacuation mechanism 28 connected only to the analysis chamber 20 and configured to evacuate the analysis chamber 20 to a pressure of 10−3 Pa or less.

公开(公告)号：US11551920B2

公开(公告)日：2023-01-10

申请号：US16492270

申请日：2018-03-05

Applicant: SHIMADZU CORPORATION

Inventor： Masaji Furuta

IPC: H01J49/04 ,  B08B5/02 ,  B08B5/04 ,  H01J49/16

Abstract: A mass spectrometer provided with an ionization chamber (10) in which ionization is performed on a sample by laser ionization, includes an opening part (12) that is provided on a side wall of the ionization chamber (10), and includes a door (13); a ventilation port (14) provided in a wall of the ionization chamber (10), which is opposite to the opening port (12); and a gas supplier (64), (67) for supplying high-pressure cleaning gas to the ionization chamber (10) through the ventilation port (14). In this configuration, the high-pressure cleaning gas flows into the ionization chamber (10) from the gas supplier (64), (67) while the door (13) is opened, thereby blowing up particles including fragments of bacterial cells, which are piled up on a floor of the ionization chamber (10), and/or sweeping particles floating near the floor, so as to discharge the particles to the outside.