Patents by Inventor Kazumi Tanaka
Kazumi Tanaka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8519341Abstract: This invention has one object to provide radiation tomography apparatus that allows suppression of arithmetic load of detection data with a wider detector ring. In order to achieve this purpose, the radiation tomography apparatus according to this invention performs coincidence only when two scintillation counter crystals that detect gamma rays coincidentally (A) belong to the same ring unit, or (B) belong to each of the ring units adjacent to each other. Accordingly, a distance in the central axis direction between the radiation detecting elements is limited to be equal to or less than a thickness of the ring unit in the central axis direction. Accordingly, radiation tomography apparatus may be provided that allows generation of the sectional image suitable for diagnosis while arithmetic load is suppressed.Type: GrantFiled: January 30, 2009Date of Patent: August 27, 2013Assignee: Shimadzu CorporationInventors: Atsushi Ohtani, Masaharu Amano, Yoshihiro Inoue, Kazumi Tanaka, Tetsuro Mizuta
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Patent number: 8500871Abstract: A water vapor permeable membrane is provided comprising a dense layer and a support layer that are adjacent to each other, wherein the dense layer contains voids with a void length of 0.1 ?m or less and the dense layer has a thickness of 0.1 ?m or more and 2 ?m or less while in the support layer, void (a), i.e. the void with the largest length in the 2 ?m thick region measured from the boundary between the dense layer and the support layer into the support layer, has a length of 0.3 ?m or more and void (b), i.e. the void with the largest length in the region ranging between 2 ?m and 4 ?m measured from the boundary into the support layer, has a length of 0.5 ?m or more, the length of the void (b) being larger than that of the void (a). A water vapor permeable membrane having both a high water vapor permeability and a low air leakage is provided.Type: GrantFiled: August 21, 2009Date of Patent: August 6, 2013Assignee: Toray Industries, Inc.Inventors: Masahiro Osabe, Kazumi Tanaka, Hiroyuki Sugaya
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Patent number: 8461518Abstract: This invention has one object to provide a method of collecting calibration data in radiation tomography apparatus that allows reliable collection of calibration data with a wide detector ring. In order to achieve this purpose, in the method of collecting calibration data in radiation tomography apparatus according to this invention, the number of coincidence events is obtained while the phantom that emits annihilation gamma-ray pairs moves as to pass through an inner hole of the detector ring. Such configuration dose not need the phantom having a width equal or larger than the detector ring, and may realize reliable collection of calibration data. Moreover, it may be considered that annihilation gamma-ray pairs have been emitted in uniform property without depending on positions of the detector ring. As a result, calibration data that is more suitable for removal of a image artifact may be obtained.Type: GrantFiled: January 23, 2009Date of Patent: June 11, 2013Assignee: Shimadzu CorporationInventors: Tetsuro Mizuta, Yoshihiro Inoue, Masaharu Amano, Kazumi Tanaka, Atsushi Ohtani
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Patent number: 8395128Abstract: One purpose of this invention is to provide radiation tomography apparatus with easier maintenance. A specific approach for this purpose is as follows. That is, a detector ring in the radiation tomography apparatus includes two or more rings. Moreover, a ring moves as to approach a next ring, whereby both the rings are connected. If radiation tomography is conducted while a clearance is provided between the rings, detection sensitivity of the detector ring decreases due to the clearance. On the other hand, according to this invention, the ring moves as to approach the next ring, which results in a narrower clearance. Accordingly, radiation that is not observed may be reduced as much as possible.Type: GrantFiled: February 16, 2009Date of Patent: March 12, 2013Assignee: Shimadzu CorporationInventors: Kazumi Tanaka, Yoshihiro Inoue, Masaharu Amano, Tetsuro Mizuta, Atsushi Ohtani
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Publication number: 20120174790Abstract: A water vapor permeable membrane is provided comprising a dense layer and a support layer that are adjacent to each other, wherein the dense layer contains voids with a void length of 0.1 ?m or less and the dense layer has a thickness of 0.1 ?m or more and 2 ?m or less while in the support layer, void (a), i.e. the void with the largest length in the 2 ?m thick region measured from the boundary between the dense layer and the support layer into the support layer, has a length of 0.3 ?m or more and void (b), i.e. the void with the largest length in the region ranging between 2 ?m and 4 ?m measured from the boundary into the support layer, has a length of 0.5 ?m or more, the length of the void (b) being larger than that of the void (a). A water vapor permeable membrane having both a high water vapor permeability and a low air leakage is provided.Type: ApplicationFiled: August 21, 2009Publication date: July 12, 2012Applicant: Toray Industries, Inc.Inventors: Masahiro Osabe, Kazumi Tanaka, Hiroyuki Sugaya
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Publication number: 20120001077Abstract: This invention has one object is to provide radiation tomography apparatus that allows production with low price through suppression in number of radiation detectors to be mounted. One of the detector rings in this invention is a first detector ring having a sufficient internal diameter to introduce shoulders of the subject M, and the other is a second detector ring having a smaller internal diameter than the first detector ring. In so doing, the radiation detectors forming the detector ring may be suppressed in number, which may provide radiation tomography apparatus of low price. Moreover, a smaller diameter of the detector ring may result in improved spatial resolution and detection sensitivity of radiation.Type: ApplicationFiled: March 25, 2009Publication date: January 5, 2012Inventors: Yoshihiro Inoue, Masaharu Amano, Kazumi Tanaka, Tetsuro Mizuta, Atsushi Ohtani
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Publication number: 20110297840Abstract: One purpose of this invention is to provide radiation tomography apparatus with easier maintenance. A specific approach for this purpose is as follows. That is, a detector ring in the radiation tomography apparatus includes two or more rings. Moreover, a ring moves as to approach a next ring, whereby both the rings are connected. If radiation tomography is conducted while a clearance is provided between the rings, detection sensitivity of the detector ring decreases due to the clearance. On the other hand, according to this invention, the ring moves as to approach the next ring, which results in a narrower clearance. Accordingly, radiation that is not observed may be reduced as much as possible.Type: ApplicationFiled: February 16, 2009Publication date: December 8, 2011Inventors: Kazumi Tanaka, Yoshihiro Inoue, Masaharu Amano, Tetsuro Mizuta, Atsushi Ohtani
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Publication number: 20110288397Abstract: Provided is a medical image diagnosis apparatus which requires a small area for installation, has a short length in an axial direction of the apparatus, can reduce a problem of the strength of a top plate, and can simultaneously carry out dynamic PET-imaging of the entire body. A top plate (61) on which an examinee lies is moved through a tunnel of a CT gantry (2) and a PET gantry (3) to execute CT imaging and PET imaging. A PET unit consisting of a plurality (e.g. seven) of PET units (32) has a length of 2 m in the axis direction, the visual field thereof covers the whole body and the whole body can be simultaneously subjected to dynamic PET-imaging. For the maintenance of the PET gantry (3), the diagnosis apparatus is separated at an arbitrary PET unit (32) to be maintained, the apparatus slides on a rail (31) in the axis direction and is separated for maintenance operation. Accordingly, a large space for maintenance is not required and the area for installation is small.Type: ApplicationFiled: February 3, 2009Publication date: November 24, 2011Applicant: SHIMADZU CORPORATIONInventors: Yoshihiro Inoue, Masaharu Amano, Kazumi Tanaka, Tetsuro Mizuta, Atsushi Ohtani
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Publication number: 20110278443Abstract: This invention has one object to provide a method of collecting calibration data in radiation tomography apparatus that allows reliable collection of calibration data with a wide detector ring. In order to achieve this purpose, in the method of collecting calibration data in radiation tomography apparatus according to this invention, the number of coincidence events is obtained while the phantom that emits annihilation gamma-ray pairs moves as to pass through an inner hole of the detector ring. Such configuration dose not need the phantom having a width equal or larger than the detector ring, and may realize reliable collection of calibration data. Moreover, it may be considered that annihilation gamma-ray pairs have been emitted in uniform property without depending on positions of the detector ring. As a result, calibration data that is more suitable for removal of a image artifact may be obtained.Type: ApplicationFiled: January 23, 2009Publication date: November 17, 2011Inventors: Tetsuro Mizuta, Yoshihiro Inoue, Masaharu Amano, Kazumi Tanaka, Atsushi Ohtani
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Publication number: 20110274241Abstract: This invention has one object to provide radiation tomography apparatus that allows suppression of arithmetic load of detection data with a wider detector ring. In order to achieve this purpose, the radiation tomography apparatus according to this invention performs coincidence only when two scintillation counter crystals that detect gamma rays coincidentally (A) belong to the same ring unit, or (B) belong to each of the ring units adjacent to each other. Accordingly, a distance in the central axis direction between the radiation detecting elements is limited to be equal to or less than a thickness of the ring unit in the central axis direction. Accordingly, radiation tomography apparatus may be provided that allows generation of the sectional image suitable for diagnosis while arithmetic load is suppressed.Type: ApplicationFiled: January 30, 2009Publication date: November 10, 2011Inventors: Atsushi Ohtani, Masaharu Amano, Yoshihiro Inoue, Kazumi Tanaka, Tetsuro Mizuta
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Publication number: 20110203826Abstract: A power tool includes a motor, a housing that accommodates the motor, a switch that supplies power to the motor, a switch lever that is provided movable relative to the housing to selectively turn ON and OFF the switch, and an off-lock member that is provided movable relative to the switch lever. The off-lock member includes a first engaging part and a second engaging part that are engageable with the housing.Type: ApplicationFiled: February 11, 2011Publication date: August 25, 2011Applicant: Hitachi Koki Co., Ltd.Inventors: Nobuhito Hosokawa, Junichi Konishi, Kazumi Tanaka, Yuuki Takeda
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Publication number: 20110151757Abstract: A grinder includes a housing, a gear cover attached to the housing by a plurality of screws, a spindle case attached to the gear cover, a wheel guard rotatably mounted on the spindle case for covering approximately a half of a disc-shaped tool bit attached to a spindle, a stop piece that regulates the rotation of the wheel guard. The wheel guard is selectively fixed to and unfixed from the spindle case. The stop piece is fixed to the housing together with the gear cover by at least one of the plurality of screws. The stop piece has an abutting section at which the stop piece abuts the wheel guard to regulate the rotation of the wheel guard. The abutting section is located at a position deviated from an axial line of the at least one of the plurality of screws.Type: ApplicationFiled: December 17, 2010Publication date: June 23, 2011Applicant: Hitachi Koki Co., Ltd.Inventor: Kazumi Tanaka
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Publication number: 20110148332Abstract: According to an aspect of the present invention, there is provided a power tool including: a motor; a switching device that switches over, in response to a conduction angle thereof, an AC voltage to be applied to the motor; a rotation speed setting unit that sets a target rotation speed of the motor; a rotation speed detection unit that detects an actual rotation speed of the motor; and a controller that determines the conduction angle by comparing the actual rotation speed with the target rotation speed and that controls the switching device by use of the conduction angle based on a maximum conduction angle, the maximum conduction angle being set in accordance with the target rotation speed.Type: ApplicationFiled: January 19, 2010Publication date: June 23, 2011Applicant: Hitachi Koki Co., Ltd.Inventors: Yoshikazu KAWANO, Nobuhiro TAKANO, Eiji NAKAYAMA, Kenro ISHIMARU, Kazumi TANAKA, Masahiro ISONO
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Patent number: 7807742Abstract: A polyamide resin composition comprising a polyamide (X) having a diamine constituent unit which is mainly composed of a m-xylylenediamine unit and a dicarboxylic acid constituent unit which is mainly composed of an adipic acid unit; and specific amounts of a phosphorus acid antioxidant and alkaline component. The polyamide (X) is characterized by a specific range of terminal-group concentration balance and a specific amino-group reaction rate. This composition can simultaneously achieve inhabitation of yellow discoloration and reduction of number of gels or fish eyes.Type: GrantFiled: July 20, 2006Date of Patent: October 5, 2010Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Kazumi Tanaka, Minoru Kikuchi
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Publication number: 20100120961Abstract: A polyamide resin composition comprising a polyamide (X) having a diamine constituent unit which is mainly composed of a m-xylylenediamine unit and a dicarboxylic acid constituent unit which is mainly composed of an adipic acid unit; and specific amounts of a phosphorus acid antioxidant and alkaline component. The polyamide (X) is characterized by a specific range of terminal-group concentration balance and a specific amino-group reaction rate. This composition can simultaneously achieve inhabitation of yellow discoloration and reduction of number of gels or fish eyes.Type: ApplicationFiled: July 20, 2006Publication date: May 13, 2010Inventors: Kazumi Tanaka, Minoru Kikuchi
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Patent number: 7692312Abstract: A semiconductor package providing with a printed circuit board and a semiconductor device, including a semiconductor substrate having a surface provided with an external connection electrode and mounted on the printed circuit board, and, a surface opposite that with said external connection electrode, abrased with a mirror finish and reinforced with a back-surface reinforcement.Type: GrantFiled: June 30, 2006Date of Patent: April 6, 2010Assignee: Sharp Kabushiki KaishaInventors: Masato Sumikawa, Kazumi Tanaka
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Patent number: 7691990Abstract: Provided is a structure designed for adsorption, which is suitable for removing dioxin and dioxin-like substances from leachate and ground water from polluted soils or garbage, washing effluent from garbage incinerators and so on that contain DNA intercalators, particularly, dioxin and dioxin-like substances. The structure designed for adsorption is a structure designed for adsorption having an adsorbing layer containing, as a constituent, a DNA complex containing a DNA-binding protein, DNA including double strand DNA and a carrier, which can selectively remove DNA intercalators with high efficiency from water, gas and so on containing them.Type: GrantFiled: June 14, 2005Date of Patent: April 6, 2010Assignees: Canon Kabushiki Kaisha, Hitachi Plant Technologies, Ltd.Inventors: Zuyi Zhang, Toshiya Yuasa, Yoshinori Kotani, Kazumi Tanaka, Hajime Ikuta, Kunio Miyasaka
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Patent number: 7648307Abstract: An underground structure cover comprises a cover body (10) and a receiving frame (20) arranged so that the cover body is fitted in and supported by the receiving frame in the manner that an inclined surface (11) of the outer circumference of the body meets an inclined surface (21) of the inner circumference of the frame. The inclined surfaces (11, 21) each have an upper inclined surface (11a, 21a) and a lower inclined surface (11b, 21b), and the lower inclined surfaces (11b, 21b) are steeper than the upper inclined surfaces (11a, 21a). The body (10) is fitted in and supported by the part (20) at the upper inclined surfaces (11a, 21a) and the lower inclined surfaces (11b, 21b). By this, the body is prevented from being wedged into the frame too deeply and also from becoming inclined with respect to the frame or riding up.Type: GrantFiled: May 12, 2004Date of Patent: January 19, 2010Assignee: Hinode Inc.Inventors: Yukinori Gondou, Tomokazu Hasegawa, Masakazu Hidaka, Norio Shinohara, Kenichi Koga, Kazumi Tanaka
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Patent number: 7588721Abstract: A solid xylylenediamine solidified in a container is extremely excellent in storage stability as compared with a liquid xylylenediamine, and is less degraded by discoloration even when stored in an atmosphere containing oxygen. By charging a liquid xylylenediamine into a container, solidifying the liquid xylylenediamine into a solid xylylenediamine in the container under cooling without delay after the charging, and storing the solid xylylenediamine in the container while maintaining the xylylenediamine in a solid state, the xylylenediamine is stored for a long period of time without causing deterioration of quality such as discoloration.Type: GrantFiled: August 29, 2007Date of Patent: September 15, 2009Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Kazumi Tanaka, Kazuhiko Amakawa
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Publication number: 20080262193Abstract: In a repeated batch production of polyamide, a dicarboxylic acid component and a diamine component fed to a batch reactor are melt-polymerized in the absence of solvent. After adding the diamine component to the molten dicarboxylic acid component, the melt polymerization is further continued at a temperature equal to or higher than the melting point of polyamide being produced for at least 10 min while maintaining the pressure of the vapor phase in the batch reactor at higher than 0.1 MPaG by introducing water vapor. The polyamide thus produced is hardly affected by gels even when the melt polymerization is conducted in the presence of polyamide remaining after the previous batch production. Molded articles thereof contain little fisheyes.Type: ApplicationFiled: April 11, 2008Publication date: October 23, 2008Inventors: Hideyuki Kurose, Kazumi Tanaka, Katsumi Shinohara, Minoru Kikuchi