Patents by Inventor Atsushi Tada
Atsushi Tada 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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Publication number: 20220371142Abstract: A machine tool includes: an advancing/retracting drive device causing a main spindle to travel back and forth with respect to a milling shaft; a clamp device provided in the milling shaft and clamping the main spindle; a feeding control section controlling the advancing/retracting drive device and the clamp device; and a reaction force sensor detecting reaction force against the advancing/retracting drive device from the main spindle. The feeding control section performs: in an unclamped state where the main spindle is not clamped by the clamp device, advancing/retracting control by which the main spindle is moved to a designated feeding position by the advancing/retracting drive device; and in a clamped state where the main spindle is clamped by the clamp device, reaction force servo control by which the advancing/retracting drive device is operated in a direction in which the reaction force detected by the reaction force sensor becomes small.Type: ApplicationFiled: July 8, 2020Publication date: November 24, 2022Applicant: SHIBAUR MACHINE CO., LTD.Inventor: Atsushi TADA
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Patent number: 11482899Abstract: It has been confirmed that even though there is a difference in the dimension of a perpendicular reference surface of a permanent magnet, there is almost no change in surface magnetic flux density, and variations in the dimension of the perpendicular reference surface do not much affect the surface magnetic flux density. Therefore, even though variations occur in the dimension of the perpendicular reference surface, variations in the characteristics of an IPM motor are prevented.Type: GrantFiled: December 10, 2019Date of Patent: October 25, 2022Assignee: TDK CorporationInventors: Ko Yanagihara, Atsushi Tada, Shinji Yoshida
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Patent number: 11411449Abstract: It can be considered that a cross-sectional shape of a permanent magnet having a parallel reference surface is obtained by removing a portion from a cross-sectional shape of a permanent magnet which does not have the parallel reference. A cross-sectional area of the permanent magnet is further reduced than that of the permanent magnet which does not have the parallel reference surface. In addition, also a magnet volume of the permanent magnet is further reduced than that of the permanent magnet that does not have the parallel reference surface. The inventors have confirmed that a decrease in magnet volume induced by the parallel reference surface does not affect the characteristics of an IPM motor.Type: GrantFiled: December 10, 2019Date of Patent: August 9, 2022Assignee: TDK CorporationInventors: Atsushi Tada, Ko Yanagihara, Shinji Yoshida
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Patent number: 11256229Abstract: An industrial machinery includes: a drive mechanism driving a control target that moves work or a tool; a motor; a first sensor detecting a position of the control target; a second sensor detecting a position of the motor; a current controller controlling a supply current to the motor; a servo controller outputting a torque instruction to the current controller; and a numerical controller calculating a processing force of the control target to the work based on position information on the control target acquired from the first sensor, position information on the motor acquired from the second sensor, and the torque instruction, the numerical controller determining that the tool is in failure if an absolute value of a first component of the processing force becomes equal to or larger than a first threshold value while processing the work, the first component having a frequency lower than a predetermined frequency.Type: GrantFiled: January 17, 2020Date of Patent: February 22, 2022Assignee: Shibaura Machine Co., Ltd.Inventors: Takamichi Ito, Jun Fujita, Atsushi Tada, Hirohiko Matsuzaki
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Patent number: 10974361Abstract: A machine tool includes a mounting table, a tool, a shade detector, and a tool controller. A workpiece is placed on the mounting table. The tool includes a tip. The shade detector is fixed on the mounting table, provides an optical path of a laser light, and detects a shade state of the laser light. The tool controller is connected to the mounting table via a supporting structure and controls an orientation and a position of the tool. A reference point associated with the tool is provided to the tool controller. The tool controller corrects a position of the tip based on a difference between a position obtained by calculation of the reference point in the case where the tip is matched with a measurement position P of a laser light and a position of the reference point when the tip portion is actually matched with a measurement position while keeping the orientation of a tool.Type: GrantFiled: May 16, 2019Date of Patent: April 13, 2021Assignee: TOSHIBA KIKAI KABUSHIKI KAISHAInventors: Yusuke Ishii, Atsushi Tada
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Patent number: 10894790Abstract: Provided is a production method of a thiazole derivative represented by the formula (I), which has an adenosine A2A receptor antagonistic action and is useful as a therapeutic agent for, for example, Parkinson's disease, sleep disorder, analgesic resistance to opioid, migraine, movement disorder, depression, anxiety disorder and the like. Also provided is a production method of a compound represented by the formula (C), which contains (i) a step of reacting a compound represented by the formula (A) and a compound represented by the formula (B), and the like: (wherein R1 represents furyl, R4, R5 and R6 are the same or different and each represents lower alkyl or aryl, R2 represents pyridyl or tetrahydropyranyl, and X1 represents halogen).Type: GrantFiled: March 18, 2020Date of Patent: January 19, 2021Assignee: KYOWA KIRIN CO., LTDInventors: Takamasa Sugita, Arata Yanagisawa, Iwao Chujo, Masashi Taga, Akihiro Mimura, Atsushi Tada, Masashi Aoki
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Publication number: 20200216438Abstract: Provided is a production method of a thiazole derivative represented by the formula (I), which has an adenosine A2A receptor antagonistic action and is useful as a therapeutic agent for, for example, Parkinson's disease, sleep disorder, analgesic resistance to opioid, migraine, movement disorder, depression, anxiety disorder and the like. Also provided is a production method of a compound represented by the formula (C), which contains (i) a step of reacting a compound represented by the formula (A) and a compound represented by the formula (B), and the like: (wherein R1 represents furyl, R4, R5 and R6 are the same or different and each represents lower alkyl or aryl, R2 represents pyridyl or tetrahydropyranyl, and X1 represents halogen).Type: ApplicationFiled: March 18, 2020Publication date: July 9, 2020Inventors: Takamasa Sugita, Arata Yanagisawa, Iwao Chujo, Masashi Taga, Akihiro Mimura, Atsushi Tada, Masashi Aoki
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Publication number: 20200195069Abstract: It can be considered that a cross-sectional shape of a permanent magnet having a parallel reference surface is obtained by removing a portion from a cross-sectional shape of a permanent magnet which does not have the parallel reference. A cross-sectional area of the permanent magnet is further reduced than that of the permanent magnet which does not have the parallel reference surface. In addition, also a magnet volume of the permanent magnet is further reduced than that of the permanent magnet that does not have the parallel reference surface. The inventors have confirmed that a decrease in magnet volume induced by the parallel reference surface does not affect the characteristics of an IPM motor.Type: ApplicationFiled: December 10, 2019Publication date: June 18, 2020Applicant: TDK CorporationInventors: Atsushi TADA, Ko YANAGIHARA, Shinji YOSHIDA
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Publication number: 20200195072Abstract: It has been confirmed that even though there is a difference in the dimension of a perpendicular reference surface of a permanent magnet, there is almost no change in surface magnetic flux density, and variations in the dimension of the perpendicular reference surface do not much affect the surface magnetic flux density. Therefore, even though variations occur in the dimension of the perpendicular reference surface, variations in the characteristics of an IPM motor are prevented.Type: ApplicationFiled: December 10, 2019Publication date: June 18, 2020Applicant: TDK CorporationInventors: Ko YANAGIHARA, Atsushi TADA, Shinji YOSHIDA
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Publication number: 20200150617Abstract: An industrial machinery includes: a drive mechanism driving a control target that moves work or a tool; a motor; a first sensor detecting a position of the control target; a second sensor detecting a position of the motor; a current controller controlling a supply current to the motor; a servo controller outputting a torque instruction to the current controller; and a numerical controller calculating a processing force of the control target to the work based on position information on the control target acquired from the first sensor, position information on the motor acquired from the second sensor, and the torque instruction, the numerical controller determining that the tool is in failure if an absolute value of a first component of the processing force becomes equal to or larger than a first threshold value while processing the work, the first component having a frequency lower than a predetermined frequency.Type: ApplicationFiled: January 17, 2020Publication date: May 14, 2020Applicant: Toshiba Kikai Kabushiki KaishaInventors: Takamichi Ito, Jun Fujita, Atsushi Tada, Hirohiko Matsuzaki
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Patent number: 10618894Abstract: Provided is a production method of a thiazole derivative represented by the formula (I), which has an adenosine A2A receptor antagonistic action and is useful as a therapeutic agent for, for example, Parkinson's disease, sleep disorder, analgesic resistance to opioid, migraine, movement disorder, depression, anxiety disorder and the like. Also provided is a production method of a compound represented by the formula (C), which contains (i) a step of reacting a compound represented by the formula (A) and a compound represented by the formula (B), and the like: (wherein R1 represents furyl, R4, R5 and R6 are the same or different and each represents lower alkyl or aryl, R2 represents pyridyl or tetrahydropyranyl, and X1 represents halogen).Type: GrantFiled: January 14, 2019Date of Patent: April 14, 2020Assignee: KYOWA KIRIN CO., LTD.Inventors: Takamasa Sugita, Arata Yanagisawa, Iwao Chujo, Masashi Taga, Akihiro Mimura, Atsushi Tada, Masashi Aoki
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Patent number: 10610990Abstract: A control system of a machine tool includes a hydraulic pressure adjuster. The hydraulic pressure adjuster includes a sequence program controller that includes components for adding a function of adjusting a hydrostatic pressure of a static pressure oil supplied to a hydrostatic pressure guide mechanism, which are a pressure setting unit, a constant acceleration motion controller, a workpiece-weight calculator and a supply state adjuster.Type: GrantFiled: December 4, 2017Date of Patent: April 7, 2020Assignee: Toshiba Kikai Kabushiki KaishaInventors: Atsushi Tada, Takuma Miyamoto
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Patent number: 10571888Abstract: An industrial machinery includes: a drive mechanism driving a control target that moves work or a tool; a motor; a first sensor detecting a position of the control target; a second sensor detecting a position of the motor; a current controller controlling a supply current to the motor; a servo controller outputting a torque instruction to the current controller; and a numerical controller calculating a processing force of the control target to the work based on position information on the control target acquired from the first sensor, position information on the motor acquired from the second sensor, and the torque instruction, the numerical controller determining that the tool is in failure if an absolute value of a first component of the processing force becomes equal to or larger than a first threshold value while processing the work, the first component having a frequency lower than a predetermined frequency.Type: GrantFiled: November 14, 2017Date of Patent: February 25, 2020Assignee: Toshiba Kikai Kabushiki KaishaInventors: Takamichi Ito, Jun Fujita, Atsushi Tada, Hirohiko Matsuzaki
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Patent number: 10515565Abstract: A driving simulation test apparatus includes a movable body, a first translational drive portion that extends along a first direction, a first translational guide portion that extends along the first direction, and a plurality of first bases that extends along the first direction and is spaced from each other in a second direction. The first translational drive portion and the first translational guide portion are aligned in the second direction on each of the plurality of first bases, and the first translational drive portion includes a plurality of first translational drive portions arranged on each of the first bases.Type: GrantFiled: January 11, 2017Date of Patent: December 24, 2019Assignee: TOSHIBA KIKAI KABUSHIKI KAISHAInventors: Atsushi Tada, Masaaki Mitsuzono
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Publication number: 20190348219Abstract: A method for producing a rare earth magnet includes a molding step of forming a green compact by supplying a metal powder containing a rare earth element into a mold, an orientation step of orienting the metal powder included in the green compact by applying a magnetic field to the green compact held in the mold, a separation step of separating at least a part of the mold from the green compact after the orientation step, a heating step of heating the green compact after the separation step to adjust the temperature of the green compact to 200° C. or higher and 450° C. or lower, and a sintering step of sintering the green compact after the heating step.Type: ApplicationFiled: November 7, 2017Publication date: November 14, 2019Applicant: TDK CorporationInventors: Toshiya HOZUMI, Shuji HIGASHI, Atsushi TADA
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Publication number: 20190321929Abstract: A machine tool includes a mounting table, a tool, a shade detector, and a tool controller. A workpiece is placed on the mounting table. The tool includes a tip. The shade detector is fixed on the mounting table, provides an optical path of a laser light, and detects a shade state of the laser light. The tool controller is connected to the mounting table via a supporting structure and controls an orientation and a position of the tool. A reference point associated with the tool is provided to the tool controller. The tool controller corrects a position of the tip based on a difference between a position obtained by calculation of the reference point in the case where the tip is matched with a measurement position P of a laser light and a position of the reference point when the tip portion is actually matched with a measurement position while keeping the orientation of a tool.Type: ApplicationFiled: May 16, 2019Publication date: October 24, 2019Applicant: TOSHIBA KIKAI KABUSHIKI KAISHAInventors: YUSUKE ISHII, ATSUSHI TADA
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Patent number: 10388440Abstract: An R-T-B based sintered magnet includes R2T14B crystal grains. A grain boundary formed by the two or more adjacent R2T14B crystal grains includes an R—N—O—C concentrated part having higher concentrations of “R”, N, O, and C than those in the R2T14B crystal grains. “R” of the R—N—O—C concentrated part includes Y. A ratio of Y atom to “R” atom in the R—N—O—C concentrated part is 0.65 or more and 1.00 or less. A ratio of O atom to “R” atom in the R—N—O—C concentrated part is more than 0 and 0.20 or less. A ratio of N atom to “R” atom in the R—N—O—C concentrated part is 0.03 or more and 0.15 or less.Type: GrantFiled: November 4, 2016Date of Patent: August 20, 2019Assignee: TDK CORPORATIONInventor: Atsushi Tada
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Publication number: 20190144438Abstract: Provided is a production method of a thiazole derivative represented by the formula (I), which has an adenosine A2A receptor antagonistic action and is useful as a therapeutic agent for, for example, Parkinson's disease, sleep disorder, analgesic resistance to opioid, migraine, movement disorder, depression, anxiety disorder and the like. Also provided is a production method of a compound represented by the formula (C), which contains (i) a step of reacting a compound represented by the formula (A) and a compound represented by the formula (B), and the like: (wherein R1 represents furyl, R4, R5 and R6 are the same or different and each represents lower alkyl or aryl, R2 represents pyridyl or tetrahydropyranyl, and X1 represents halogen).Type: ApplicationFiled: January 14, 2019Publication date: May 16, 2019Inventors: Takamasa Sugita, Arata Yanagisawa, Iwao Chujo, Masashi Taga, Akihiro Mimura, Atsushi Tada, Masashi Aoki
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Patent number: 10186357Abstract: An R-T-B based sintered magnet including a main phase composed of an R2T14B (wherein, R is at least one selected from the group consisting of Y, Ce, La, Pr, Nd, Sm, Eu and Gd; and T is one or more transition metal elements with Fe as necessity) structure, wherein the R-T-B based sintered magnet has a grain boundary phase containing Ce, Fe and Co, and the cross-section area ratio of the grain boundary phase containing Ce, Fe and Co in a unit cross-section area is 1.0% or more and 5.0% or less.Type: GrantFiled: April 15, 2016Date of Patent: January 22, 2019Assignee: TDK CORPORATIONInventor: Atsushi Tada
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Patent number: 10099314Abstract: A tool holder of a machine tool, in which the machine tool includes a spindle head and a spindle supported by the spindle head, includes: a shank portion attached to the spindle; a rotary portion integrally provided to the shank portion and to which a welding tool (processing tool) used for friction stir welding is attachable; a bearing mechanism (bearing) supporting the rotary portion so that the rotary portion is rotatable; and a bearing holder holding the bearing mechanism, in which the bearing holder is disposed facing the spindle head and is capable of transmitting a load applied to the bearing mechanism to the spindle head.Type: GrantFiled: March 10, 2017Date of Patent: October 16, 2018Assignee: Toshiba Kikai Kabushiki KaishaInventors: Kouichi Katoh, Masami Aihara, Atsushi Tada, Makoto Sawazaki