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公开(公告)号：US10955498B2
公开(公告)日：2021-03-23
申请号：US16580205
申请日：2019-09-24
Applicant: Osaka University , JEOL Ltd.
Inventor： Toshimichi Fujiwara , Yoh Matsuki , Hiroki Takahashi , Shinji Nakamura
Abstract: Attenuation of microwaves is reduced or prevented when vacuum windows are provided in microwave waveguides of a DNP-NMR probe. A DNP-NMR probe has an inner container and an outer container. The inner container has therein a sample tube containing a sample to which radicals are added. The outer container keeps a space between the outer container and the inner container in the outer container in a vacuum state. The outer container has an outer container waveguide that has a vacuum window at an inner end portion and guides microwaves. The inner container has a vacuum window facing the vacuum window of the outer container waveguide through vacuum, and guides microwaves transmitted from the outer container waveguide to the sample. The window-to-window distance between the vacuum window of the outer container and the vacuum window of the inner container is adjusted by means of adjustment bolts.
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公开(公告)号：US10914799B2
公开(公告)日：2021-02-09
申请号：US16364793
申请日：2019-03-26
Applicant: Osaka University , JEOL Ltd.
Inventor： Toshimichi Fujiwara , Yoh Matsuki , Yuki Endo , Takahiro Nemoto , Shinji Nakamura
IPC: G01R33/30
Abstract: A rotor contains a sample. A turbine cap is fitted into an opening of one end of the rotor, and a bottom cap is fitted into an opening of the other end of the rotor. A recess portion is formed in the turbine cap, and a recess portion is formed in the bottom cap. Insert members having a negative linear expansion coefficient are disposed in the recess portions.
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公开(公告)号：US10775456B2
公开(公告)日：2020-09-15
申请号：US16392949
申请日：2019-04-24
Applicant: JEOL Ltd.
Inventor： Katsuyuki Toshima , Shigenori Tsuji , Shinji Nakamura , Fumio Hobo , Takeshi Tsukada , Akifumi Nomura
IPC: G01R33/385 , G01R1/067 , G01R33/421
Abstract: A sample pipe is provided in a sample temperature control pipe. A detection coil is provided in a low-temperature airtight chamber and configured to irradiate a sample with a high-frequency magnetic field. A room-temperature shield is provided on an outer circumferential surface of the sample temperature control pipe or on an inner circumferential surface thereof, and is configured to block irradiation of the high-frequency magnetic field from the detection coil from reaching a region other than an observation object. A low-temperature shield is provided in an airtight chamber and between the detection coil and the room-temperature shield and is configured to block irradiation of the high-frequency magnetic field from the detection coil from reaching the room-temperature shield.
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公开(公告)号：US20190331747A1
公开(公告)日：2019-10-31
申请号：US16392949
申请日：2019-04-24
Applicant: JEOL Ltd.
Inventor： Katsuyuki Toshima , Shigenori Tsuji , Shinji Nakamura , Fumio Hobo , Takeshi Tsukada , Akifumi Nomura
IPC: G01R33/385 , G01R33/421 , G01R1/067
Abstract: A sample pipe is provided in a sample temperature control pipe. A detection coil is provided in a low-temperature airtight chamber and configured to irradiate a sample with a high-frequency magnetic field. A room-temperature shield is provided on an outer circumferential surface of the sample temperature control pipe or on an inner circumferential surface thereof, and is configured to block irradiation of the high-frequency magnetic field from the detection coil from reaching a region other than an observation object. A low-temperature shield is provided in an airtight chamber and between the detection coil and the room-temperature shield and is configured to block irradiation of the high-frequency magnetic field from the detection coil from reaching the room-temperature shield.
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公开(公告)号：US11061088B2
公开(公告)日：2021-07-13
申请号：US16548121
申请日：2019-08-22
Applicant: Osaka University , JEOL Ltd.
Inventor： Toshimichi Fujiwara , Yoh Matsuki , Yuki Endo , Shinji Nakamura , Hiroki Takahashi
Abstract: A container has a sample installation unit and an NMR circuit therein, and is connected to a bearing gas supply path and a drive gas supply path for supplying gas to the inside of that container. This container is also connected to an exhaust path that exhausts the gas from the inside of the container. The exhaust path has a pressure control valve as an adjustment mechanism for adjusting the pressure in the container.
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Patent Agency Ranking
公开(公告)号：US20160223628A1
公开(公告)日：2016-08-04
申请号：US15008767
申请日：2016-01-28
Applicant: Osaka University , JEOL Ltd.
Inventor： Toshimichi Fujiwara , Yoh Matsuki , Shinji Nakamura
CPC classification number: G01R33/31 , G01R33/282 , G01R33/307
Abstract: A sample rotor is placed in a sample chamber inside an inner container. An air bearing type rotation mechanism blows a refrigerant gas (composed of a bearing gas and a driving gas) onto the sample rotor, to rotate the sample rotor and simultaneously cool the same. The refrigerant gas discharged from the air bearing type rotation mechanism is filled in an internal space (such as the sample chamber and a detection circuit chamber) of the inner container. An upper airtight chamber is formed between an outer container and the inner container. A lower airtight chamber is formed below a sealing bulkhead within a bottom unit. The upper and lower airtight chambers are in vacuum states to thereby function as vacuum insulation spaces for the internal space of the inner container.
Abstract translation: 将样品转子放置在内部容器内的样品室中。 空气轴承型旋转机构将制冷剂气体（由轴承气体和驱动气体构成）吹送到试样转子上，使样品转子旋转并同时使其冷却。 从空气轴承型旋转机构排出的制冷剂气体填充在内部容器的内部空间（例如样品室和检测电路室）中。 在外容器和内容器之间形成上密封室。 在底部单元内的密封隔板的下方形成下密封室。 上部和下部气密室处于真空状态，从而用作内部容器的内部空间的真空绝热空间。
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公开(公告)号：US20190324099A1
公开(公告)日：2019-10-24
申请号：US16364793
申请日：2019-03-26
Applicant: Osaka University , JEOL Ltd.
Inventor： Toshimichi Fujiwara , Yoh Matsuki , Yuki Endo , Takahiro Nemoto , Shinji Nakamura
IPC: G01R33/30
Abstract: A rotor contains a sample. A turbine cap is fitted into an opening of one end of the rotor, and a bottom cap is fitted into an opening of the other end of the rotor. A recess portion is formed in the turbine cap, and a recess portion is formed in the bottom cap. Insert members having a negative linear expansion coefficient are disposed in the recess portions.
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公开(公告)号：US10254357B2
公开(公告)日：2019-04-09
申请号：US15008767
申请日：2016-01-28
Applicant: Osaka University , JEOL Ltd.
Inventor： Toshimichi Fujiwara , Yoh Matsuki , Shinji Nakamura
Abstract: A sample rotor is placed in a sample chamber inside an inner container. An air bearing type rotation mechanism blows a refrigerant gas (composed of a bearing gas and a driving gas) onto the sample rotor, to rotate the sample rotor and simultaneously cool the same. The refrigerant gas discharged from the air bearing type rotation mechanism is filled in an internal space (such as the sample chamber and a detection circuit chamber) of the inner container. An upper airtight chamber is formed between an outer container and the inner container. A lower airtight chamber is formed below a sealing bulkhead within a bottom unit. The upper and lower airtight chambers are in vacuum states to thereby function as vacuum insulation spaces for the internal space of the inner container.
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公开(公告)号：US10114089B2
公开(公告)日：2018-10-30
申请号：US15403474
申请日：2017-01-11
Applicant: JEOL Ltd.
Inventor： Katsuyuki Toshima , Shinji Nakamura , Shigenori Tsuji
Abstract: A sample tube is arranged in a sample temperature adjusting pipe, and a temperature adjustment gas is supplied. A vacuum vessel is formed with the sample temperature adjusting pipe and an outer wall body, and a detection coil and the like to be placed in a cooling state are arranged in the vacuum vessel. A sealed section between the sample temperature adjusting pipe and the outer wall body is sealed by a sealing structure. The sealing structure includes a high-vacuum O-ring and a low-temperature O-ring. The high-vacuum O-ring has characteristics for sealing the sealed section in a regular temperature region. The regular temperature region is a temperature region excluding a low temperature region, and the low temperature region is a temperature region including a lower limit in a possible temperature adjustment range of the temperature adjustment gas. The low-temperature O-ring has characteristics for sealing the sealed section in the low temperature region.
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公开(公告)号：US20170205479A1
公开(公告)日：2017-07-20
申请号：US15403474
申请日：2017-01-11
Applicant: JEOL Ltd.
Inventor： Katsuyuki Toshima , Shinji Nakamura , Shigenori Tsuji
IPC: G01R33/34
CPC classification number: G01R33/3403 , G01R33/30 , G01R33/34092
Abstract: A sample tube is arranged in a sample temperature adjusting pipe, and a temperature adjustment gas is supplied. A vacuum vessel is formed with the sample temperature adjusting pipe and an outer wall body, and a detection coil and the like to be placed in a cooling state are arranged in the vacuum vessel. A sealed section between the sample temperature adjusting pipe and the outer wall body is sealed by a sealing structure. The sealing structure includes a high-vacuum O-ring and a low-temperature O-ring. The high-vacuum O-ring has characteristics for sealing the sealed section in a regular temperature region. The regular temperature region is a temperature region excluding a low temperature region, and the low temperature region is a temperature region including a lower limit in a possible temperature adjustment range of the temperature adjustment gas. The low-temperature O-ring has characteristics for sealing the sealed section in the low temperature region.
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