Patents by Inventor Masahiro Iizuka

Masahiro Iizuka 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).

  • Patent number: 12235770
    Abstract: According to one embodiment, the failure analysis system of the semiconductor device includes a memory, a failure information management table, and an analyzing unit. The memory stores normal/failure information collected in a block unit and a column unit in a chip, in a plurality of inspection processes of the semiconductor memory. The failure information management table stores the normal/failure information in the block unit and the column unit stored in the memory, with an addition of product information, fabricating information including a lot number, a wafer number, and a chip address, process information, and test information, which are common information ranging over the inspection processes. The analyzing unit analyzes the normal/failure information in the block unit and the column unit ranging over the plurality of inspection processes, on the basis of the information stored in the failure information management table.
    Type: Grant
    Filed: February 22, 2021
    Date of Patent: February 25, 2025
    Assignee: Kioxia Corporation
    Inventors: Mami Kodama, Yoshikazu Iizuka, Masahiro Noguchi, Yumiko Watanabe
  • Patent number: 12203804
    Abstract: [Object] To provide an electronic balance configured to uses a non-contact sensor to perform a predetermined operation, in which a greater number of operations than the number of non-contact sensors can be performed. [Means for solving problem] An electronic balance (1) includes: a non-contact sensor (31; 32) configured to detect an object; a state identifier (306) configured to identify a time pattern of a detection signal of the non-contact sensor (31; 32) as one of a plurality of previously defined time patterns; and an operation controller (30; 303; 304; 305) configured to control an operation of a predetermined section of the electronic balance (1) related to the time pattern identified by the state identifier.
    Type: Grant
    Filed: May 16, 2022
    Date of Patent: January 21, 2025
    Assignee: SHIMADZU CORPORATION
    Inventors: Masahiro Katoh, Atsushi Iizuka, Hiroshi Hamamoto
  • Patent number: 12073978
    Abstract: In a coil-embedded dust core constituting an inductance element, a winding body of a coil disposed inside a coil-embedded dust core and a dust core have a relationship that the inner core volume ratio RV defined below is 3 or more and 5 or less: RV=(V1/V2)/(1?V/Vp), where V1 represents a volume of a region in the dust core located on an inner side of the winding body of the coil when the coil-embedded dust core is viewed in a first direction, which is a direction along a winding axis of the coil, V2 represents a volume of a region in the dust core located on an outer side of the winding body of the coil when the coil-embedded dust core is viewed in the first direction, V represents a volume of the dust core, and Vp represents a volume of the coil-embedded dust core.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: August 27, 2024
    Assignee: Alps Alpine Co., Ltd.
    Inventors: Ryo Nakabayashi, Akinori Kojima, Akira Sato, Keiichiro Sato, Masahiro Iizuka
  • Publication number: 20210074464
    Abstract: In a coil-embedded dust core constituting an inductance element, a winding body of a coil disposed inside a coil-embedded dust core and a dust core have a relationship that the inner core volume ratio RV defined below is 3 or more and 5 or less: RV=(V1/V2)/(1?V/Vp), where V1 represents a volume of a region in the dust core located on an inner side of the winding body of the coil when the coil-embedded dust core is viewed in a first direction, which is a direction along a winding axis of the coil, V2 represents a volume of a region in the dust core located on an outer side of the winding body of the coil when the coil-embedded dust core is viewed in the first direction, V represents a volume of the dust core, and Vp represents a volume of the coil-embedded dust core.
    Type: Application
    Filed: October 27, 2020
    Publication date: March 11, 2021
    Inventors: Ryo NAKABAYASHI, Akinori KOJIMA, Akira SATO, Keiichiro SATO, Masahiro IIZUKA
  • Publication number: 20180303270
    Abstract: The present invention provides a device and a coffee production method which are capable of extracting coffee from which an unfavorable taste is removed as much as possible. There is provided a coffee extraction device including an extractor that has a hollow portion which has an internal space for containing a liquid, a bottom portion which is disposed below the hollow portion, and a tube portion which ascends from the bottom portion and descends again so as to discharge the liquid to a lower portion of the bottom portion, and a filter portion that is capable of filtering ground coffee beans, and that has an engagement portion for engaging with the extractor in order to be placed at a predetermined position from the bottom portion of the extractor. The filter portion is placed in the hollow portion of the extractor so that the tube portion achieves a siphon effect.
    Type: Application
    Filed: October 16, 2015
    Publication date: October 25, 2018
    Inventor: Masahiro IIZUKA
  • Patent number: 9831790
    Abstract: A DC-to-DC converter includes a voltage converter having: a capacitance; at least one inductor configured to store energy and exchange stored energy with the capacitance; and a switching element configured to switch on and off a current flowing through the inductor and change direction of the current at each switching. The inductor includes a variable inductor whose inductance decreases with increase in the current.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: November 28, 2017
    Assignee: ALPS ELECTRIC CO., LTD.
    Inventors: Takao Mizushima, Masahiro Iizuka, Yutaka Naito, Kinshiro Takadate, Kazuki Iwaya, Eiichi Takahashi
  • Patent number: 9435831
    Abstract: A current sensor includes a magnetic sensor module including a plurality of magnetic sensor units connected in series. The magnetic sensor units each include a first magnetic sensor element and a second magnetic sensor element which have sensitivity axes oriented in opposite directions. A first terminal of the first magnetic sensor unit is connected to a first potential source. A third terminal of the first magnetic sensor unit is connected to a second potential source. A second terminal and a fourth terminal of the last magnetic sensor unit are connected to constitute a sensor output terminal. The first terminal of each of the magnetic sensor units excluding the first magnetic sensor unit is connected to the second terminal of the next magnetic sensor unit and the third terminal thereof is connected to the fourth terminal of the next magnetic sensor unit.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: September 6, 2016
    Assignee: ALPS GREEN DEVICES CO., LTD.
    Inventors: Mitsuo Aratono, Masahiro Iizuka, Masamichi Saito, Akira Takahashi, Shigenobu Miyajima, Kenji Ichinohe, Yoshihiro Nishiyama, Yosuke Ide, Shinji Mitsuya
  • Patent number: 9207264
    Abstract: A current sensor includes a substrate, a conductive body being provided above the substrate and extending in one direction, and magnetoresistance effect elements being provided between the substrate and the conductive body and outputting output signals owing to an induction magnetic field from a current to be measured being conducted through the conductive body, wherein each of the magnetoresistance effect elements has a laminated structure including a ferromagnetic fixed layer whose magnetization direction is fixed, a non-magnetic intermediate layer, and a free magnetic layer whose magnetization direction fluctuates with respect to an external magnetic field, the ferromagnetic fixed layer is a self-pinned type formed by antiferromagnetically coupling a first ferromagnetic film and a second ferromagnetic film through an antiparallel coupling film, the Curie temperatures of the first ferromagnetic film and the second ferromagnetic film are approximately equal, and a difference between the magnetization amounts
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: December 8, 2015
    Assignee: ALPS GREEN DEVICES CO., LTD.
    Inventors: Yosuke Ide, Masamichi Saito, Akira Takahashi, Masahiro Iizuka, Kenji Ichinohe, Yoshihiro Nishiyama, Mitsuo Aratono
  • Patent number: 9146260
    Abstract: A magnetic balance type current sensor includes a magnetic balance type current sensor including a magnetoresistance effect element whose characteristic changes owing to an induction magnetic field from a current to be measured flowing through a conductor, a feedback coil configured to be disposed in the vicinity of the magnetoresistance effect element and generate a cancelling magnetic field cancelling out the induction magnetic field, a magnetic shield configured to attenuate the induction magnetic field and enhance the cancelling magnetic field, and a hard bias layer configured to be provided on or above the magnetic shield.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: September 29, 2015
    Assignee: ALPS GREEN DEVICES CO., LTD.
    Inventors: Yoshihiro Nishiyama, Masamichi Saito, Akira Takahashi, Masahiro Iizuka
  • Patent number: 8754642
    Abstract: A magnetic balance type current sensor includes a magnetoresistance effect element whose resistance value changes owing to the application of an induction magnetic field from a current to be measured; a feedback coil disposed in the vicinity of the magnetoresistance effect element and generating a cancelling magnetic field cancelling out the induction magnetic field; a magnetic field detection bridge circuit including two outputs causing a voltage difference corresponding to the induction magnetic field to occur; and a magnetic shield attenuating the induction magnetic field and enhancing the cancelling magnetic field, wherein, on the basis of the current flowing through the feedback coil at the time of an equilibrium state in which the induction magnetic field and the cancelling magnetic field are cancelled out, the current to be measured is measured, wherein the feedback coil, the magnetic shield, and the magnetic field detection bridge circuit are formed on a same substrate.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: June 17, 2014
    Assignee: Alps Green Devices., Ltd.
    Inventors: Yosuke Ide, Masahiro Iizuka, Masamichi Saito, Akira Takahashi, Hideharu Matsuo, Tsuyoshi Nojima, Shigenobu Miyajima, Naoki Sakatsume, Kenji Ichinohe, Yoshihiro Nishiyama, Tatsuya Kogure, Hidekazu Kobayashi
  • Publication number: 20130265040
    Abstract: A current sensor includes a substrate, a conductive body being provided above the substrate and extending in one direction, and magnetoresistance effect elements being provided between the substrate and the conductive body and outputting output signals owing to an induction magnetic field from a current to be measured being conducted through the conductive body, wherein each of the magnetoresistance effect elements has a laminated structure including a ferromagnetic fixed layer whose magnetization direction is fixed, a non-magnetic intermediate layer, and a free magnetic layer whose magnetization direction fluctuates with respect to an external magnetic field, the ferromagnetic fixed layer is a self-pinned type formed by antiferromagnetically coupling a first ferromagnetic film and a second ferromagnetic film through an antiparallel coupling film, the Curie temperatures of the first ferromagnetic film and the second ferromagnetic film are approximately equal, and a difference between the magnetization amounts
    Type: Application
    Filed: June 4, 2013
    Publication date: October 10, 2013
    Inventors: Yosuke IDE, Masamichi SAITO, Akira TAKAHASHI, Masahiro IIZUKA, Kenji ICHINOHE, Yoshihiro NISHIYAMA, Mitsuo ARATONO
  • Publication number: 20130249531
    Abstract: A current sensor includes a magnetic sensor module including a plurality of magnetic sensor units connected in series. The magnetic sensor units each include a first magnetic sensor element and a second magnetic sensor element which have sensitivity axes oriented in opposite directions. A first terminal of the first magnetic sensor unit is connected to a first potential source. A third terminal of the first magnetic sensor unit is connected to a second potential source. A second terminal and a fourth terminal of the last magnetic sensor unit are connected to constitute a sensor output terminal. The first terminal of each of the magnetic sensor units excluding the first magnetic sensor unit is connected to the second terminal of the next magnetic sensor unit and the third terminal thereof is connected to the fourth terminal of the next magnetic sensor unit.
    Type: Application
    Filed: May 29, 2013
    Publication date: September 26, 2013
    Applicant: ALPS GREEN DEVICES CO., LTD.
    Inventors: Mitsuo ARATONO, Masahiro IIZUKA, Masamichi SAITO, Akira TAKAHASHI, Shigenobu MIYAJIMA, Kenji ICHINOHE, Yoshihiro NISHIYAMA, Yosuke IDE, Shinji MITSUYA
  • Patent number: 8519704
    Abstract: A magnetic-balance-system current sensor includes: a magnetoresistive element, a resistance value of the magnetoresistive element being changed by applying an induction magnetic field generated by a measurement target current; magnetic cores disposed near the magnetoresistive element; a feedback coil disposed near the magnetoresistive element and configured to generate a cancelling magnetic field that cancels out the induction magnetic field; and a magnetic-field detecting bridge circuit having two outputs. The measurement target current is measured on the basis of a current flowing through the feedback coil when the induction magnetic field and the induction magnetic field and the cancelling magnetic field cancel each other out. The feedback coil, the magnetic cores, and the magnetic-field detecting bridge circuit are formed on a same substrate. The feedback coil is of a spiral type, and the magnetic cores are provided above and below the feedback coil.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: August 27, 2013
    Assignee: Alps Green Devices Co., Ltd.
    Inventors: Yosuke Ide, Masamichi Saito, Akira Takahashi, Tsuyoshi Nojima, Shigenobu Miyajima, Naoki Sakatsume, Kenji Ichinohe, Yoshihiro Nishiyama, Tatsuya Kogure, Hidekazu Kobayashi, Masahiro Iizuka
  • Patent number: 8395383
    Abstract: A current sensor includes a magnetic detecting element, a bridge circuit including a plurality of resistance elements, and a feedback coil placed adjacent to the magnetic detecting element and generating a cancelling magnetic field for cancelling the induced magnetic field based on the output from the bridge circuit. The wiring patterns forming the bridge circuit are routed so as not to intersect with each other when seen in a plan view. Only the resistance elements constituting each series circuit of the bridge circuit are connected to each other by the wiring pattern in an enclosed area which encloses each resistance element constituting the bridge circuit, and the wiring pattern branched from the wiring pattern is connected to the terminal which is installed in a quantity of only one, outside the enclosed area.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: March 12, 2013
    Assignee: Alps Green Devices Co., Ltd.
    Inventors: Yoshihiro Nishiyama, Masamichi Saito, Akira Takahashi, Yosuke Ide, Hidekazu Kobayashi, Masahiro Iizuka
  • Patent number: 8270127
    Abstract: Magnetoresistive effect elements R1 to R4 are a TMR element or CPP-GMR element. A multilayer film forming the magnetoresistive effect elements is formed to have a width dimension T1 and a length dimension L1 perpendicular to the width dimension T1. The length dimension L1 is longer than the width dimension T1. The width dimension of magnetic field generators of the coil is T2. The multilayer film 31 is positioned within the width dimension T3 of 60% in total of 30% each to the width dimension T2 of the magnetic field generators 3 and 4 of the coil in the direction towards both sides from the center of the width dimension T2 when seen in a plan view.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: September 18, 2012
    Assignee: Alps Green Devices Co., Ltd.
    Inventors: Yosuke Ide, Masamichi Saito, Akira Takahashi, Masahiro Iizuka, Yoshihiro Nishiyama, Hidekazu Kobayashi
  • Patent number: 8269492
    Abstract: A magnetic balance type current sensor measures a measured current which flows in a feedback coil when electrical conduction is provided by a voltage difference according to an induction magnetic field from the measured current and an equilibrium state is reached in which the induction magnetic field and a cancel magnetic field cancel each other. Sensor elements in a pair are arranged at positions with magnetic field from the measured current. The magnetization direction of the pinned magnetic layer in the magnetoresistive effect element of one sensor element is aligned in a forward direction with respect to the magnetic field formed by the measured current. The magnetization direction of the pinned magnetic layer in the magnetoresistive effect element of the other sensor element is aligned in a reverse direction with respect to the magnetic field formed by the measured current.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: September 18, 2012
    Assignee: Alps Green Devices Co., Ltd.
    Inventors: Masamichi Saito, Akira Takahashi, Masahiro Iizuka, Tatsuya Kogure, Yosuke Ide, Yoshihiro Nishiyama, Kenji Ichinohe, Naoki Sakatsume, Tsuyoshi Nojima, Shigenobu Miyajima, Hidekazu Kobayashi
  • Publication number: 20120062215
    Abstract: A magnetic-balance-system current sensor includes: a magnetoresistive element, a resistance value of the magnetoresistive element being changed by applying an induction magnetic field generated by a measurement target current; magnetic cores disposed near the magnetoresistive element; a feedback coil disposed near the magnetoresistive element and configured to generate a cancelling magnetic field that cancels out the induction magnetic field; and a magnetic-field detecting bridge circuit having two outputs. The measurement target current is measured on the basis of a current flowing through the feedback coil when the induction magnetic field and the induction magnetic field and the cancelling magnetic field cancel each other out. The feedback coil, the magnetic cores, and the magnetic-field detecting bridge circuit are formed on a same substrate. The feedback coil is of a spiral type, and the magnetic cores are provided above and below the feedback coil.
    Type: Application
    Filed: November 18, 2011
    Publication date: March 15, 2012
    Applicant: ALPS GREEN DEVICES CO., LTD.
    Inventors: Yosuke IDE, Masamichi SAITO, Akira TAKAHASHI, Tsuyoshi NOJIMA, Shigenobu MIYAJIMA, Naoki SAKATSUME, Kenji ICHINOHE, Yoshihiro NISHIYAMA, Tatsuya KOGURE, Hidekazu KOBAYASHI, Masahiro IIZUKA
  • Publication number: 20120062224
    Abstract: A magnetic balance type current sensor includes a magnetoresistance effect element whose resistance value changes owing to the application of an induction magnetic field from a current to be measured; a feedback coil disposed in the vicinity of the magnetoresistance effect element and generating a cancelling magnetic field cancelling out the induction magnetic field; a magnetic field detection bridge circuit including two outputs causing a voltage difference corresponding to the induction magnetic field to occur; and a magnetic shield attenuating the induction magnetic field and enhancing the cancelling magnetic field, wherein, on the basis of the current flowing through the feedback coil at the time of an equilibrium state in which the induction magnetic field and the cancelling magnetic field are cancelled out, the current to be measured is measured, wherein the feedback coil, the magnetic shield, and the magnetic field detection bridge circuit are formed on a same substrate.
    Type: Application
    Filed: November 18, 2011
    Publication date: March 15, 2012
    Applicant: ALPS GREEN DEVICES CO., LTD.
    Inventors: Yosuke IDE, Masahiro IIZUKA, Masamichi SAITO, Akira TAKAHASHI, Hideharu MATSUO, Tsuyoshi NOJIMA, Shigenobu MIYAJIMA, Naoki SAKATSUME, Kenji ICHINOHE, Yoshihiro NISHIYAMA, Tatsuya KOGURE, Hidekazu KOBAYASHI
  • Publication number: 20110221434
    Abstract: A current sensor includes a magnetic detecting element, a bridge circuit including a plurality of resistance elements, and a feedback coil placed adjacent to the magnetic detecting element and generating a cancelling magnetic field for cancelling the induced magnetic field based on the output from the bridge circuit. The wiring patterns forming the bridge circuit are routed so as not to intersect with each other when seen in a plan view. Only the resistance elements constituting each series circuit of the bridge circuit are connected to each other by the wiring pattern in an enclosed area which encloses each resistance element constituting the bridge circuit, and the wiring pattern branched from the wiring pattern is connected to the terminal which is installed in a quantity of only one, outside the enclosed area.
    Type: Application
    Filed: February 28, 2011
    Publication date: September 15, 2011
    Applicant: ALPS GREEN DEVICES CO., LTD.
    Inventors: Yoshihiro NISHIYAMA, Masamichi SAITO, Akira TAKAHASHI, Yosuke IDE, Hidekazu KOBAYASHI, Masahiro IIZUKA
  • Publication number: 20110156798
    Abstract: Magnetoresistive effect elements R1 to R4 are a TMR element or CPP-GMR element. A multilayer film forming the magnetoresistive effect elements is formed to have a width dimension T1 and a length dimension L1 perpendicular to the width dimension T1. The length dimension L1 is longer than the width dimension T1. The width dimension of magnetic field generators of the coil is T2. The multilayer film 31 is positioned within the width dimension T3 of 60% in total of 30% each to the width dimension T2 of the magnetic field generators 3 and 4 of the coil in the direction towards both sides from the center of the width dimension T2 when seen in a plan view.
    Type: Application
    Filed: March 9, 2011
    Publication date: June 30, 2011
    Applicant: ALPS GREEN DEVICES CO., LTD.
    Inventors: Yosuke IDE, Masamichi SAITO, Akira TAKAHASHI, Masahiro IIZUKA, Yoshihiro NISHIYAMA, Hidekazu KOBAYASHI