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51. 发明申请

US20060077027A1 Magnetic field-producing device 审中-公开
标题翻译：磁场产生装置
公开(公告)号：US20060077027A1
公开(公告)日：2006-04-13
申请号：US10544711
申请日：2004-02-09
申请人： Masaaki Aoki
发明人： Masaaki Aoki
IPC分类号： H01F7/02
CPC分类号： G01R33/383 , H01F7/0278
摘要： A magnetic field generator (10) which generates a high uniformity magnetic field at a plurality of locations is provided. The magnetic field generator (10) includes a pair of plate yokes (12a),(12b) which are faced to each other with a gap (G) in between. A pair of mutually opposed magnetic poles (14a),(14b), and another pair of mutually opposed magnetic poles (16a),(16b) are provided between the plate yokes (12a),(12b). The magnetic poles (14a),(14b) respectively include permanent magnet groups (18a),(18b) which are disposed on mutually opposed surfaces of the plate yokes (12a),(12b). Pole pieces (20a),(20b) are fixed to mutually opposed surfaces respectively of the permanent magnet groups (18a),(18b). The magnetic poles (16a),(16b) respectively include permanent magnet groups (22a),(22b) which are disposed on mutually opposed surfaces of the plate yokes (12a),(12b). Pole pieces (24a),(24b) are fixed to mutually opposed surfaces respectively of the permanent magnet groups (22a),(22b). Magnetic field uniformity spaces (F1),(F2) are formed between the pole pieces (20a),(20b) and between the pole pieces (24a),(24b) respectively.
摘要翻译：提供了一种在多个位置产生高均匀性磁场的磁场发生器（10）。磁场发生器（10）包括一对彼此面对并具有间隙（G）的板状轭铁（12a），（12b）。在板状轭铁（12a），（12b）之间设有一对相互相对的磁极（14a），（14b）和另一对相互相对的磁极（16a），（16b）。磁极（14a），（14b）分别包括布置在板状磁轭（12a），（12b）的彼此相对的表面上的永磁体组（18a），（18b）。杆件（20A），（20b）分别固定在永久磁铁组（18a），（18b）的相互相对的表面上。磁极（16a），（16b）分别包括设置在板状磁轭（12a），（12b）的相互相对的表面上的永磁体组（22a），（22b）。杆件（24a），（24b）分别固定在永久磁铁组（22a），（22b）的相互相对的表面上。磁极均匀性空间（F 1），（F 2）分别形成在极靴（20A），（20b）之间以及极片（24a），（24b）之间。

52. 发明申请

US20050151539A1 Magnetic field generating device and mri equipment using the device 有权
标题翻译：磁场发生装置和使用该装置的mri设备
公开(公告)号：US20050151539A1
公开(公告)日：2005-07-14
申请号：US10513793
申请日：2003-05-19
申请人： Masaaki Aoki , Tsuyoshi Tsuzaki
发明人： Masaaki Aoki , Tsuyoshi Tsuzaki
IPC分类号： G01R33/38 , G01R33/383 , G01V3/00
CPC分类号： G01R33/3806 , G01R33/383
摘要： A magnetic field generator (10) capable of generating a more intense magnetic field, and an MRI apparatus (200) using it are provided. Permanent magnets (12a), (12b), (14a), (14b), (16a), (16b), (18a), (18b), (20a), (20b), (22) and (24) are disposed annularly for formation of a magnetic field generation space (30). Ferromagnetic materials (26a) and (26b) are provided near the magnetic field generation space (30), at places passed by a magnetic flux. Each of the permanent magnets (12a), (14a), (16a), (18a) and (20a) surrounding the ferromagnetic material (26a) is magnetized so as to make an S pole on the side of the ferromagnetic material (26a). Each of the permanent magnets (12b), (14b), (16b), (18b) and (20b) surrounding the ferromagnetic material (26b) is magnetized so as to make an N pole on the side of the ferromagnetic material (26b). An MRI apparatus (200) is obtained by using the magnetic field generator (10).
摘要翻译：提供能够产生更强磁场的磁场发生器（10）和使用它的MRI装置（200）。永磁体（12a），（12b），（14a），（14b），（16a），（16b），（18a），（18b），（20a）），（22）和（24）环形地设置以形成磁场产生空间（30）。铁磁材料（26a）和（26b）设置在磁场产生空间（30）附近，在通过磁通的地方。围绕铁磁材料（26a）的永磁体（12a），（14a），（16a），（18a）和（20a）中的每一个被磁化以使S极在铁磁材料（26a）。围绕铁磁材料（26b）的每个永磁体（12b），（14b），（16b），（18b）和（20b）被磁化，以便在铁磁材料（26b）。通过使用磁场发生器（10）获得MRI装置（200）。

53. 发明授权

US06897751B2 Pole-piece unit, method for assembling the same, and magnetic field generator 有权
标题翻译：杆件单元，其组装方法和磁场发生器
公开(公告)号：US06897751B2
公开(公告)日：2005-05-24
申请号：US10887481
申请日：2004-07-09
申请人： Masaaki Aoki , Tsuyoshi Tsuzaki
发明人： Masaaki Aoki , Tsuyoshi Tsuzaki
IPC分类号： G01R33/383 , H01F7/00
CPC分类号： G01R33/3806 , G01R33/383 , H01F7/0278
摘要： A magnetic field generator comprises a pair of pole-piece units. The pair of pole-piece units respectively include plate yokes. Each of the plate yokes includes a surface facing the other's and provided with a permanent magnet group and a pole piece. The pole piece includes an annular projection having a plurality of annular-projection pieces and a permanent magnet for reduction of magnetic flux leakage installed on an outside surface of each annular-projection piece. The permanent magnet for reduction of magnetic flux leakage may be disposed with a magnetizing direction thereof being slanted with respect to a main surface of the permanent magnet group.
摘要翻译：磁场发生器包括一对极片单元。一对极靴单元分别包括板轭。每个板状轭铁包括面对另一方的表面，并设置有永磁体组和极片。极片包括具有多个环形突起片的环形突起和用于减少安装在每个环形突起片的外表面上的磁通泄漏的永磁体。用于减小磁通泄漏的永磁体可以相对于永磁体组的主表面倾斜地设置在磁化方向上。

54. 发明授权

US06781495B2 Magnetic field generator and assembling method thereof 有权
标题翻译：磁场发生器及其组装方法
公开(公告)号：US06781495B2
公开(公告)日：2004-08-24
申请号：US10233539
申请日：2002-09-04
申请人： Masaaki Aoki , Tsuyoshi Tsuzaki
发明人： Masaaki Aoki , Tsuyoshi Tsuzaki
IPC分类号： H01F700
CPC分类号： G01R33/3806 , G01R33/383 , G01R33/421
摘要： A magnetic field generator comprises a pair of plate yokes opposed to each other with a space in between. Each plate yoke has a main surface on which a permanent magnet is disposed. A shielding magnet is provided each at a forward portion on an open side and at a rearward portion, of another main surface in the plate yoke. A magnetic spacer is placed between the plate yoke and the shielding magnet. When assembling, a shielding magnet is mounted on a main surface of the spacer, and then another main surface of the spacer is placed on the main surface of the plate yoke. The shielding magnet is covered by a nonmagnetic cover member. A distance not smaller than 2 mm is provided between an outer surface of the cover member and a surface of the shielding magnet. The plate yoke is provided with nonmagnetic legs.
摘要翻译：磁场发生器包括彼此相对的一对板状轭铁之间的空间。每个板状轭铁具有设置永久磁铁的主表面。屏蔽磁体分别设置在板状磁轭中的另一个主表面的开口侧和后方的前部。磁性间隔件放置在板状磁轭和屏蔽磁铁之间。当组装时，屏蔽磁体安装在间隔件的主表面上，然后间隔件的另一个主表面放置在板轭的主表面上。屏蔽磁体由非磁性盖构件覆盖。在盖构件的外表面和屏蔽磁体的表面之间设置不小于2mm的距离。板轭设有非磁性腿。

55. 发明授权

US06650214B2 Magnetic field generator for MRI, method for assembling the same, and method for assembling a magnet unit for the same 有权
公开(公告)号：US06650214B2
公开(公告)日：2003-11-18
申请号：US09815008
申请日：2001-03-23
申请人： Masaaki Aoki , Shigeo Hashimoto
发明人： Masaaki Aoki , Shigeo Hashimoto
IPC分类号： H01F500
CPC分类号： G01R33/3806 , G01R33/3802 , G01R33/383 , Y10T29/49002 , Y10T29/4902 , Y10T29/49073 , Y10T29/49075 , Y10T29/49901 , Y10T29/49902 , Y10T156/1089
摘要： A plate yoke has an upper surface formed with a projection and a guiding rail. A new magnet block is transported by sliding on the upper surface of the plate yoke, and is bonded side by side with the projection or a magnet block which is already fixed. During the above operation, a magnetic member is held above the plate yoke. Preferably, the new magnet block is transported toward a corner portion, with side surfaces of the magnet block held parallel to a side surface of the projection and a side surface of the guiding rail respectively. When the magnet unit and the column yoke is connected, the column yoke or the magnet unit is lowered so that a guiding rod attached to an end face of the column yoke is inserted into a hole formed in the magnetic unit. Further, the column yoke is guided by a guiding member disposed between a permanent magnet on the plate yoke and a position where the column yoke is to be connected on the plate yoke.

56. 发明授权

US06452472B1 Pole-piece unit, method for assembling the same, and magnetic field generator 有权
标题翻译：杆件单元，其组装方法和磁场发生器
公开(公告)号：US06452472B1
公开(公告)日：2002-09-17
申请号：US09712906
申请日：2000-11-16
申请人： Masaaki Aoki , Tsuyoshi Tsuzaki
发明人： Masaaki Aoki , Tsuyoshi Tsuzaki
IPC分类号： H01F700
CPC分类号： G01R33/3806 , G01R33/383 , H01F7/0278
摘要： A magnetic field generator comprises a pair of pole-piece units. The pair of pole-piece units respectively include plate yokes. Each of the plate yokes includes a surface facing the other's and provided with a permanent magnet group and a pole piece. The pole piece includes an annular projection having a plurality of annular-projection pieces and a permanent magnet for reduction of magnetic flux leakage installed on an outside surface of each annular-projection piece. When assembling the pole piece, first, the permanent magnet for reduction of magnetic flux leakage is fixed on the outside surface of each annular-projection piece. At this time, the permanent magnet is slid on the flat outside surface of the annular-projection piece, to a desired position on the annular-projection piece, and then fixed. Each of the annular-projection pieces mounted with the permanent magnet is fixed on a base plate. At this time, the annular-projection piece is lowered on a guide stake attached on the base plate, allowing the stake into a guide hole formed in the annular-projection piece, thereby guiding the annular-projection piece onto the base plate. The pair of pole-piece units are magnetically connected by a column yoke. The permanent magnet for reduction of magnetic flux leakage may be disposed with a magnetizing direction thereof being slanted with respect to a main surface of the permanent magnet group.
摘要翻译：磁场发生器包括一对极片单元。一对极靴单元分别包括板轭。每个板状轭铁包括面对另一方的表面，并设置有永磁体组和极片。极片包括具有多个环形突起片的环形突起和用于减少安装在每个环形突起片的外表面上的磁通泄漏的永磁体。在组装极靴时，首先，在每个环形突起片的外表面上固定用于减少磁通泄漏的永久磁铁。此时，将永磁体在环形突起片的平坦外表面上滑动到环形突起片上的期望位置，然后固定。安装有永磁体的每个环形突起片固定在基板上。此时，环形突起片在安装在基板上的引导片上降低，从而使得钉扎在形成在环形突片中的引导孔中，从而将环形突起件引导到底板上。一对极片单元通过柱轭磁连接。用于减小磁通泄漏的永磁体可以相对于永磁体组的主表面倾斜地设置在磁化方向上。

57. 发明授权

US06313632B1 Magnetic field generator for MRI, packing member for the same, and method for packing the same 有权
标题翻译：用于MRI的磁场发生器，用于包装的磁场发生器，以及用于包装的方法
公开(公告)号：US06313632B1
公开(公告)日：2001-11-06
申请号：US09302190
申请日：1999-04-30
申请人： Masaaki Aoki , Shigeo Hashimoto
发明人： Masaaki Aoki , Shigeo Hashimoto
IPC分类号： G01V300
CPC分类号： G01R33/383
摘要： A magnetic field generator for an MRI includes a generator main body. The generator main body includes a pair of plate yokes opposed to each other with space in between, a permanent magnet disposed in each of the opposed surfaces of the plate yokes, and a column yoke for magnetically connecting the plate yokes. As a packing member, a shielding member, and if necessary, a stud pin as well as a fixing member are prepared. When packing, the shielding member is attached to the generator main body for shielding an opening. The stud pin may be used for providing a gap between the generator main body and the shielding member. For an open-type generator, the fixing member should preferably be attached to bridge the pair of plate yokes at a middle portion of the opening.
摘要翻译：用于MRI的磁场发生器包括发生器主体。发电机主体包括一对彼此相对并具有空间的板状轭铁，设置在板状轭铁的每个相对表面中的永磁体和用于磁性地连接板状轭铁的柱状轭铁。作为包装部件，准备遮蔽部件，根据需要配置螺柱销以及固定部件。当包装时，屏蔽构件附接到发电机主体以屏蔽开口。螺柱销可以用于在发电机主体和屏蔽构件之间提供间隙。对于开放式发电机，固定构件应优选地安装成在开口的中间部分处桥接一对板状轭铁。

58. 发明授权

US06297634B1 MRI magnetic field generator 有权
标题翻译： MRI磁场发生器
公开(公告)号：US06297634B1
公开(公告)日：2001-10-02
申请号：US09486873
申请日：2000-02-14
申请人： Masaaki Aoki
发明人： Masaaki Aoki
IPC分类号： G01V300
CPC分类号： G01R33/383 , G01R33/389
摘要： An MRI-use magnetic field generator structured such that there is no loss of magnetic field uniformity, temperature fluctuation is reduced and thermal efficiency enhanced, and the temperature of the permanent magnets can be controlled to high precision. With this invention, temperature control heaters are embedded in the base yokes of magnetic path formation members, and as a result of this structure, when the temperature control heaters are heated by a temperature regulator according to the temperature detected by a temperature sensor, the permanent magnets disposed in the vicinity of the base yokes are heated efficiently, so control follow-up is excellent. Furthermore, because the temperature control heaters are embedded inside the base yokes, and the heat generated by the heaters is conducted through the base yokes and reaches the permanent magnets directly, the heat is not diffused to the outside and lost, affording extremely efficient thermal control.
摘要翻译：一种MRI使用的磁场发生器，其结构使得不会损失磁场均匀性，降低温度波动并提高热效率，并且可以将永磁体的温度控制到高精度。利用本发明，温度控制加热器嵌入到磁路形成部件的基架中，结果，当温度控制加热器根据温度传感器检测到的温度由温度调节器加热时，永久设置在基架附近的磁体被有效地加热，因此控制跟踪是优异的。此外，由于温度控制加热器嵌入在基座轭内部，并且由加热器产生的热量直接通过基座磁轭传播并直接到达永久磁铁，所以热量不会扩散到外部而损失，从而提供非常有效的热控制。

59. 外观设计

USD439668S1 Magnetic field generating device for use in MRI 失效
标题翻译：用于MRI的磁场产生装置
公开(公告)号：USD439668S1
公开(公告)日：2001-03-27
申请号：US29127982
申请日：2000-08-16
申请人： Masaaki Aoki , Tsuyoshi Tsuzaki
设计人： Masaaki Aoki , Tsuyoshi Tsuzaki

60. 发明授权

US06207794B1 Polyoxyalkylene polyols, derivatives thereof, and process for producing the polyoxyalkylene polyols 有权
标题翻译：聚氧化烯多元醇，其衍生物，以及聚氧化烯多元醇的制造方法
公开(公告)号：US06207794B1
公开(公告)日：2001-03-27
申请号：US09202559
申请日：1998-12-17
申请人： Satoshi Yamasaki , Yasunori Hara , Satoshi Tamura , Fumio Yamazaki , Hitoshi Watanabe , Mikio Matsufuji , Shinsuke Matsumoto , Ariko Nishikawa , Tsukuru Izukawa , Masaaki Aoki , Tadahito Nobori , Usaji Takaki
发明人： Satoshi Yamasaki , Yasunori Hara , Satoshi Tamura , Fumio Yamazaki , Hitoshi Watanabe , Mikio Matsufuji , Shinsuke Matsumoto , Ariko Nishikawa , Tsukuru Izukawa , Masaaki Aoki , Tadahito Nobori , Usaji Takaki
IPC分类号： C08J300
CPC分类号： C08G65/30 , C08G18/10 , C08G18/4866 , C08G18/5024 , C08G18/632 , C08G65/2675 , C08G18/6685
摘要： The present invention is a polyoxyalkylene polyol, its manufacture method, and derivatives, wherein: it is obtained using a phosphazenium compound as a catalyst; the hydroxyl value is 2˜200 mgKOH/g; total degree of unsaturation is 0.0001˜0.07 meq./g; the head-to-tail bond selectivity of the polyoxyalkylene polyol is 95 mole %; and when the maximum height of the peak of GPC elution curve is set to be 100%, W20 is defined as the peak width at the 20% peak height, and W80 is defined as the peak width at 80% peak height, the ratio of W20/W80 is 1.5 or greater, and less than 3.
摘要翻译：本发明是聚氧化烯多元醇，其制造方法和衍生物，其中：使用磷氮杂鎓化合物作为催化剂获得; 羟值为2〜200 mgKOH / g; 总不饱和度为0.0001〜0.07meq./g; 聚氧化烯多元醇的头 - 尾键选择性为95摩尔％。并且当GPC洗脱曲线的峰的最大高度设定为100％时，将W20定义为20％峰高处的峰宽，W80定义为峰高80％时的峰宽， W20 / W80为1.5以上，小于3。

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