Patents by Inventor Yoshihiro Nishiyama

Yoshihiro Nishiyama 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: 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
  • 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
  • Publication number: 20120195167
    Abstract: An underwater detection device for detecting underwater by transmission and reception of an ultrasonic signal is provided. The device includes a transmission module for transmitting the ultrasonic signal underwater, a reception module for receiving an echo signal of the transmitted ultrasonic signal, a bottom detection module for detecting a bottom based on the echo signal from the bottom, a bottom-sediment determination module for calculating probabilities of the bottom sediment on how much the bottom sediment contains each of predetermined bottom sediment types based on the echo signal and a bottom-sediment display module for displaying a texture representing each of the bottom sediment types below the bottom being displayed based on the probabilities.
    Type: Application
    Filed: April 4, 2012
    Publication date: August 2, 2012
    Applicant: Furuno Electric Company Limited
    Inventors: Osamu Kubota, Yoshihiro Nishiyama, Yuumiko Furukawa
  • Patent number: 8222769
    Abstract: A magnetic coupling type isolator includes: a magnetic field generator for generating an external magnetic field by an input signal; a magnetoresistive element for detecting the external magnetic field and converting the detected magnetic field into an electric signal, the magnetoresistive element being electrically insulated from the magnetic field generator and positioned in a location capable of being magnetically coupled so as to be overlapped with the magnetic field generator as seen in a top plan view; first and second shield films overlapped with the magnetic field generator and the magnetoresistive element as seen in a top plan view; and a third shield film disposed to surround the magnetoresistive element.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: July 17, 2012
    Assignee: Alps Green Devices Co., Ltd.
    Inventors: Yosuke Ide, Masamichi Saito, Akira Takahashi, Tsuyoshi Nojima, Yoshihiro Nishiyama, Hidekazu Kobayashi, Kenji Ichinohe, Naoki Sakatsume
  • Patent number: 8207864
    Abstract: An underwater detection device for detecting underwater by transmission and reception of an ultrasonic signal is provided. The device includes a transmission module for transmitting the ultrasonic signal underwater, a reception module for receiving an echo signal of the transmitted ultrasonic signal, a bottom detection module for detecting a bottom based on the echo signal from the bottom, a bottom-sediment determination module for calculating probabilities of the bottom sediment on how much the bottom sediment contains each of predetermined bottom sediment types based on the echo signal and a bottom-sediment display module for displaying a texture representing each of the bottom sediment types below the bottom being displayed based on the probabilities.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: June 26, 2012
    Assignee: Furuno Electric Company Limited
    Inventors: Osamu Kubota, Yoshihiro Nishiyama, Yumiko Furukawa
  • Patent number: 8208231
    Abstract: A tunneling magnetic sensing element includes a laminate in which a pinned magnetic layer having a magnetization direction pinned, an insulating barrier layer, and a free magnetic layer having a magnetization direction variable with an external magnetic field are laminated in order from below. The insulating barrier layer is made of Mg—O. The free magnetic layer has a soft magnetic layer and an enhanced layer disposed between the soft magnetic layer and the insulating barrier layer to have a spin polarization ratio higher than the soft magnetic layer. An insertion magnetic layer made of one selected from Co—Fe—B, Co—B, Fe—B, and Co—Fe is inserted into the soft magnetic layer in a direction parallel to the interface of each layer constituting the laminate, and the soft magnetic layer is divided into multiple layers in a thickness direction through the insertion magnetic layer.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: June 26, 2012
    Assignee: Alps Electric Co., Ltd.
    Inventors: Kazumasa Nishimura, Hidekazu Kobayashi, Masamichi Saito, Yosuke Ide, Ryo Nakabayashi, Yoshihiro Nishiyama, Akio Hanada, Naoya Hasegawa
  • 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
  • Patent number: 8130476
    Abstract: A tunneling magnetic sensing element includes: a pinned magnetic layer whose direction of magnetization is pinned in one direction; an insulating barrier layer; and a free magnetic layer whose direction of magnetization changes in response to an external magnetic field. The pinned magnetic layer, the insulating barrier layer and the free magnetic layer are deposited in the named order. A first protective layer composed of a platinum-group element is disposed on the free magnetic layer, and a second protective layer composed of Ti is disposed on the first protective layer.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: March 6, 2012
    Assignee: TDK Corporation
    Inventors: Kazumasa Nishimura, Masamichi Saito, Yoshihiro Nishiyama, Hidekazu Kobayashi, Naoya Hasegawa
  • Patent number: 8124253
    Abstract: A tunneling magnetic sensing element includes a laminate in which an underlayer, a seed layer, an antiferromagnetic layer, a pinned magnetic layer, an insulating barrier layer, and a free magnetic layer are laminated in order from below. The insulating barrier layer is made of Mg—O. The underlayer is made of Ti, and the seed layer is made of one selected from a group consisting of Ni—Fe—Cr and Ru.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: February 28, 2012
    Assignee: ALPS Electric Co., Ltd.
    Inventors: Kazumasa Nishimura, Masamichi Saito, Yosuke Ide, Ryo Nakabayashi, Yoshihiro Nishiyama, Hidekazu Kobayashi, Naoya Hasegawa
  • Patent number: 8045300
    Abstract: A free magnetic layer has a laminated structure in which a first magnetic sublayer composed of Co—Fe or Fe and a second magnetic sublayer composed of Co—Fe—B or Fe—B are formed, in that order, on an insulating barrier layer composed of Mg—O. This effectively improves the rate of change in resistance (?R/R) compared with the related art.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: October 25, 2011
    Assignee: TDK Corporation
    Inventors: Kazumasa Nishimura, Yosuke Ide, Naoya Hasegawa, Masamichi Saito, Yoshihiro Nishiyama, Ryo Nakabayashi, Hidekazu Kobayashi
  • Publication number: 20110221435
    Abstract: A magnetic sensor includes a magnetoresistance effect element and a hard bias layer. The magnetoresistance effect element is configured to have a striped form which has a sensitivity axis in a predetermined direction, and configured to have a structure in which a free magnetic layer, in which magnetization varies with respect to an external magnetic field, a non-magnetic layer, and a fixed magnetic layer, in which the magnetization is fixed, are laminated. The hard bias layer is disposed in a longitudinal direction of the striped form, disposed outside of the magnetoresistance effect element to be separated from the magnetoresistance effect element.
    Type: Application
    Filed: March 1, 2011
    Publication date: September 15, 2011
    Applicant: ALPS ELECTRIC CO., LTD.
    Inventors: Yosuke IDE, Masamichi SAITO, Akira TAKAHASHI, Kenji ICHINOHE, Yoshihiro NISHIYAMA
  • 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
  • Patent number: 8011841
    Abstract: A re-transfer printing machine 60 uses an ink film 33 having a sublimation-ink area of sublimation inks Y, M, C and an invisible-ink area of an invisible ink UVS and an intermediate-transfer film 11 having a protecting layer 11c and an ink receptor layer 11d enabling the sublimation inks and the invisible ink to be received. The machine includes an overlap detecting part 76-5 for detecting whether a print image contains an overlapping between a sublimation-ink image 18 and an invisible-ink image 20 and a controller 6 for controlling a transfer operation corresponding to detection by the overlap detecting part. If the overlap detecting part detects that the print image contains the overlapping, the controller allows the machine to transfer the sublimation-ink and invisible-ink images to different areas in the receptor layer. If not, the controller allows the machine to transfer the sublimation-ink and invisible-ink images to an identical area 212 in the receptor layer.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: September 6, 2011
    Assignee: Victor Company of Japan, Limited
    Inventors: Keiji Ihara, Yoshihiro Nishiyama, Toshinori Takahashi
  • Patent number: 8009391
    Abstract: An underlying layer is composed of Co—Fe—B that is an amorphous magnetic material. Thus, the upper surface of the underlying layer can be taken as a lower shield layer-side reference position for obtaining a gap length (GL) between upper and lower shields, resulting in a narrower gap than before. In addition, since the underlying layer has an amorphous structure, the underlying layer does not adversely affect the crystalline orientation of individual layers to be formed thereon, and the surface of the underlying layer has good planarizability. Accordingly, PW50 (half-amplitude pulse width) and SN ratio can be improved more than before without causing a decrease in rate of change in resistance (? R/R) or the like, thereby achieving a structure suitable for increasing recording density.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: August 30, 2011
    Assignee: TDK Corporation
    Inventors: Kenichi Tanaka, Eiji Umetsu, Kazuaki Ikarashi, Kota Asatsuma, Norimasa Okanishi, Yoshihiro Nishiyama, Masamichi Saito, Yosuke Ide, Kazumasa Nishimura, Ryo Nakabayashi, Hidekazu Kobayashi, Akio Hanada, Naoya Hasegawa
  • 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
  • Patent number: 7969690
    Abstract: In a tunneling magnetoresistive element, an insulating barrier layer is made of Mg—O, and a first pinned magnetic layer has a laminated structure in which a nonmagnetic metal sublayer made of Ta is interposed between a lower ferromagnetic sublayer and an upper ferromagnetic sublayer. The nonmagnetic metal sublayer has an average thickness of about 1 ? or more and about 5 ? or less.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: June 28, 2011
    Assignee: Alps Electric Co., Ltd.
    Inventors: Kazumasa Nishimura, Masamichi Saito, Yosuke Ide, Ryo Nakabayashi, Yoshihiro Nishiyama, Hidekazu Kobayashi, Naoya Hasegawa
  • Patent number: 7969693
    Abstract: A tunnel magnetoresistive sensor includes a pinned magnetic layer, an insulating barrier layer formed of Mg—O, and a free magnetic layer. A barrier-layer-side magnetic sublayer constituting at least part of the pinned magnetic layer and being in contact with the insulating barrier layer includes a first magnetic region formed of CoFeB or FeB and a second magnetic region formed of CoFe or Fe. The second magnetic region is disposed between the first magnetic region and the insulating barrier layer.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: June 28, 2011
    Assignee: Alps Electric Co., Ltd.
    Inventors: Kazuaki Ikarashi, Eiji Umetsu, Kenichi Tanaka, Kazumasa Nishimura, Masamichi Saito, Yosuke Ide, Ryo Nakabayashi, Yoshihiro Nishiyama, Hidekazu Kobayashi, Naoya Hasegawa
  • Publication number: 20110080165
    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: Application
    Filed: September 27, 2010
    Publication date: April 7, 2011
    Applicant: 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: 20100283628
    Abstract: An underwater detection device for detecting underwater by transmission and reception of an ultrasonic signal is provided. The device includes a transmission module for transmitting the ultrasonic signal underwater, a reception module for receiving an echo signal of the transmitted ultrasonic signal, a bottom detection module for detecting a bottom based on the echo signal from the bottom, a bottom-sediment determination module for calculating probabilities of the bottom sediment on how much the bottom sediment contains each of predetermined bottom sediment types based on the echo signal and a bottom-sediment display module for displaying a texture representing each of the bottom sediment types below the bottom being displayed based on the probabilities.
    Type: Application
    Filed: January 31, 2008
    Publication date: November 11, 2010
    Applicant: Furuno Electric Company Limited
    Inventors: Osamu Kubota, Yoshihiro Nishiyama, Yumiko Furukawa