Patents by Inventor Motoyuki Miyata

Motoyuki Miyata 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).

  • Publication number: 20220363595
    Abstract: A metallic laminate shaped flow path member has both a surface roughness of a flow path inner surface and corrosion resistance at such a level as to be utilizable as a flow path member for use in a supply line for a corrosive fluid in a semiconductor device manufacturing apparatus. A metallic substrate constituting the metallic laminate shaped flow path member has surface irregularities, the inner surface of the flow path of the metallic laminate shaped flow path member is formed with a glass coating layer in such a manner as to fill at least recessed regions of the surface irregularities of the metallic substrate, and the glass coating layer includes at least one of a layer of a P2O5—ZnO—Al2O3 based glass, a layer of a Bi2O3—ZnO—B2O3 based glass, and a layer of an SiO2—B2O3—Na2O based glass.
    Type: Application
    Filed: November 12, 2020
    Publication date: November 17, 2022
    Inventors: Motoyuki MIYATA, Takuya AOYAGI, Yuzo DAIGO, Tatsuya MIYAKE, Takashi NAITO
  • Patent number: 10546671
    Abstract: A voltage nonlinear resistor according to the present invention includes a sintered body consisting essentially of zinc oxide and containing bismuth, antimony, and boron as accessory components. The accessory components are bismuth oxide of 1.5 to 2.5 mol %, antimony oxide of 1 to 2 mol %, and boron oxide of 0.3 mol % or less in terms of oxides.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: January 28, 2020
    Assignee: HITACHI, LTD.
    Inventors: Motoyuki Miyata, Junichiro Miyake, Koichi Tsuda
  • Patent number: 10522638
    Abstract: A semiconductor chip includes a semiconductor substrate made of SiC, a front surface electrode formed in a principal surface of the semiconductor substrate, and a rear surface electrode (drain electrode) formed in a rear surface of the semiconductor substrate. The front surface electrode is bonded to a wire, and includes an Al alloy film containing a high melting-point metal. The Al alloy film contains a columnar Al crystal which extends along a thickness direction of the Al alloy film, and an intermetallic compound is precipitated therein.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: December 31, 2019
    Assignee: HITACHI POWER SEMICONDUCTOR DEVICE, LTD.
    Inventors: Masakazu Sagawa, Takahiro Morikawa, Motoyuki Miyata, Kan Yasui, Toshiaki Morita
  • Publication number: 20190157412
    Abstract: A semiconductor chip includes a semiconductor substrate made of SiC, a front surface electrode formed in a principal surface of the semiconductor substrate, and a rear surface electrode (drain electrode) formed in a rear surface of the semiconductor substrate. The front surface electrode is bonded to a wire, and includes an Al alloy film containing a high melting-point metal. The Al alloy film contains a columnar Al crystal which extends along a thickness direction of the Al alloy film, and an intermetallic compound is precipitated therein.
    Type: Application
    Filed: October 5, 2018
    Publication date: May 23, 2019
    Inventors: Masakazu SAGAWA, Takahiro MORIKAWA, Motoyuki MIYATA, Kan YASUI, Toshiaki MORITA
  • Publication number: 20170207009
    Abstract: A voltage nonlinear resistor according to the present invention includes a sintered body consisting essentially of zinc oxide and containing bismuth, antimony, and boron as accessory components. The accessory components are bismuth oxide of 1.5 to 2.5 mol %, antimony oxide of 1 to 2 mol %, and boron oxide of 0.3 mol % or less in terms of oxides.
    Type: Application
    Filed: January 19, 2017
    Publication date: July 20, 2017
    Applicant: HITACHI, LTD.
    Inventors: Motoyuki MIYATA, Junichiro MIYAKE, Koichi TSUDA
  • Patent number: 9435009
    Abstract: An objective of the invention is to provide a method and system for separating a particular rare earth element from a rare earth magnet at a high separation ratio and by a simple process. There is provided a rare earth separation method for separating a first and a second groups of rare earth elements contained in a magnet, the method including: a starting powder preparation step from the magnet; a magnet component oxidation heat treatment step; a rare earth oxide separation step from the magnet components oxide powder; a powder size optimization step; a chlorinating agent mixing step; a chlorination/oxychlorination heat treatment step of forming a “first group rare earth chlorides”/“second group rare earth oxychlorides” mixture; a selective dissolution step of selectively dissolving the first group rare earth chlorides in the solvent and leaving the second group rare earth oxychlorides undissolved in solid phase form; and a solid-liquid separation step.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: September 6, 2016
    Assignee: Hitachi Metals, Ltd.
    Inventors: Hiroki Yamamoto, Katsuyoshi Furusawa, Hiroyuki Hoshi, Atsushi Kikugawa, Motoyuki Miyata, Hajime Murakami
  • Patent number: 9376736
    Abstract: A method for separating and recovering a plurality of rare-earth elements, the method including a step of introducing, into a liquid, a mixture containing a rare-earth oxychloride and a rare-earth chloride, the rare-earth oxychloride constituted from a rare-earth element different from a rare-earth element constituting the rare-earth chloride, thereby obtaining an insoluble matter containing the rare-earth oxychloride and a liquid in which the rare-earth chloride is dissolved, a step of recovering the rare-earth oxychloride from the insoluble matter, and a step of recovering the rare-earth chloride from the liquid in which the rare-earth chloride is dissolved.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: June 28, 2016
    Assignee: Hitachi Metals, Ltd.
    Inventors: Motoyuki Miyata, Hiroki Yamamoto, Hiroshi Sasaki, Toshio Yasuda, Katsuyoshi Furusawa
  • Publication number: 20150292059
    Abstract: An objective of the invention is to provide a method and system for separating a particular rare earth element from a rare earth magnet at a high separation ratio and by a simple process. There is provided a rare earth separation method for separating a first and a second groups of rare earth elements contained in a magnet, the method including: a starting powder preparation step from the magnet; a magnet component oxidation heat treatment step; a rare earth oxide separation step from the magnet components oxide powder; a powder size optimization step; a chlorinating agent mixing step; a chlorination/oxychlorination heat treatment step of forming a “first group rare earth chlorides”/“second group rare earth oxychlorides” mixture; a selective dissolution step of selectively dissolving the first group rare earth chlorides in the solvent and leaving the second group rare earth oxychlorides undissolved in solid phase form; and a solid-liquid separation step.
    Type: Application
    Filed: October 8, 2013
    Publication date: October 15, 2015
    Inventors: Hiroki Yamamoto, Katsuyoshi Furusawa, Hiroyuki Hoshi, Atsushi Kikugawa, Motoyuki Miyata, Hajime Murakami
  • Publication number: 20140356258
    Abstract: A method for separating and recovering a plurality of rare-earth elements, the method including a step of introducing, into a liquid, a mixture containing a rare-earth oxychloride and a rare-earth chloride, the rare-earth oxychloride constituted from a rare-earth element different from a rare-earth element constituting the rare-earth chloride, thereby obtaining an insoluble matter containing the rare-earth oxychloride and a liquid in which the rare-earth chloride is dissolved, a step of recovering the rare-earth oxychloride from the insoluble matter, and a step of recovering the rare-earth chloride from the liquid in which the rare-earth chloride is dissolved.
    Type: Application
    Filed: December 21, 2012
    Publication date: December 4, 2014
    Applicant: Hitachi Metals, Ltd.
    Inventors: Motoyuki Miyata, Hiroki Yamamoto, Hiroshi Sasaki, Toshio Yasuda, Katsuyoshi Furusawa
  • Publication number: 20130126864
    Abstract: In order to provide a semiconductor junction element consisted of an oxide semiconductor glass, which does not contain a toxic element and rare metal element, and various semiconductor devices using it, semiconductor glasses which contain vanadium oxide and have different polarities are connected each other in a semiconductor junction element of the present invention. Moreover, a semiconductor glass containing vanadium oxide is connected to an element semiconductor or a compound semiconductor which have different polarity from the semiconductor glass. Furthermore, a semiconductor glass containing vanadium oxide is connected to a metal.
    Type: Application
    Filed: September 2, 2011
    Publication date: May 23, 2013
    Applicant: HITACHI, LTD.
    Inventors: Tadashi Fujieda, Takashi Naito, Takuya Aoyagi, Hiroki Yamamoto, Motoyuki Miyata
  • Patent number: 7755269
    Abstract: It is an object of the present invention to provide a spacer which has an adequate Young's modulus for a spacer used in an image display panel and allows free adjustment of an electric resistance value, and an image display panel using the spacer. The spacer SPC holds a gap between a back panel PNL1 including a signal line CL, a scanning line GL, and an electronic source ELS provided for the main surface of a back substrate SUB1, and a front panel PNL2 including a fluorescent material PH, a black matrix BM, and an anode AD provided for the main surface of a front substrate SUB2. The spacer comprises phosphate glass including the same transition metal element with different valences. For electrical conduction, the included same transition metal element with different valences allows the use of hopping conduction between transition metal atoms with different valences to perform adjustment of electric resistance relatively easily.
    Type: Grant
    Filed: January 5, 2007
    Date of Patent: July 13, 2010
    Assignee: Hitachi Displays, Ltd.
    Inventors: Yuichi Sawai, Osamu Shiono, Takashi Namekawa, Nobuhiko Hosotani, Hiroshi Ito, Keiichi Kanazawa, Takashi Naitou, Hiroyuki Akata, Mitsuo Hayashibara, Shigemi Hirasawa, Motoyuki Miyata, Hiroki Yamamoto
  • Publication number: 20090241654
    Abstract: A high-accuracy EGR sensor is provided. A recirculation system is provided which controls the flow rate of EGR by use of the sensor. A thermal gas flowmeter includes a heating resistor disposed in a flow of gas to be measured for detecting the flow rate of the gas, and an external circuit electrically connected to the heating resistor for outputting a signal according to the flow rate of the gas to be measured using the heating resistor. The heating resistor is controlled to be heated at a temperature equal to or higher than a vapor film forming temperature for forming a vapor film.
    Type: Application
    Filed: February 19, 2009
    Publication date: October 1, 2009
    Applicant: Hitachi, Ltd.
    Inventors: Motoyuki Miyata, Noboru Tokuyasu, Hiroaki Hoshika, Shiro Yamaoka
  • Patent number: 7526955
    Abstract: The objects of the present invention are to provide a high-accuracy EGR sensor, and EGR system which adopts the above sensor to measure EGR rate. The gas flow meter comprises a sensor section for measuring fluid flow rate and controller for controlling signals transmitted into and out of the sensor section, and is controlled at a working temperature of 350 to 700° C., wherein a protective coat formed on the sensor section has resistance to temperature at which deposition of a PM component in exhaust gases can be prevented.
    Type: Grant
    Filed: April 12, 2007
    Date of Patent: May 5, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Motoyuki Miyata, Noboru Tokuyasu, Katsuaki Fukatsu
  • Publication number: 20090009054
    Abstract: An MIM electron source is comprised of a lower electrode, an insulation film and an upper electrode. By depositing a coat film on the upper electrode through a sputter process using a sputter target of alkaline glass having a modifier component of an alkaline metal oxide or alkaline earth metal oxide, the work function of the upper electrode can be lowered. As a result, the electron emission efficiency can be increased stably.
    Type: Application
    Filed: April 4, 2008
    Publication date: January 8, 2009
    Inventors: Toshiaki Kusunoki, Motoyuki Miyata, Takashi Naito, Mitsuharu Ikeda, Yoshiro Mikami, Etsuko Nishimura
  • Publication number: 20080238316
    Abstract: The purpose of the present invention is to provide a plasma display panel containing black colored parts which have high resistant against degradation in blackness or peeling by high-temperature oxidation.
    Type: Application
    Filed: January 24, 2008
    Publication date: October 2, 2008
    Inventors: Mitsuo Hayashibara, Yuichi Sawai, Hiroki Yamamoto, Motoyuki Miyata, Fusao Hojo, Takashi Naito, Keiichi Kanazawa, Tatsuya Miyake, Hideto Momose
  • Publication number: 20080238292
    Abstract: A plasma display panel comprising a front substrate and a back substrate formed opposite each other and bonded to each other at the peripheries, electrodes formed on the front substrate, a dielectric layer formed on the electrodes, a protective layer formed on the dielectric layer, another electrode and another dielectric layer formed on the back substrate, barrier ribs to keep spaces between the front substrate and the back substrate, and fluorescent materials packed in the spaces formed by the barrier ribs, the front substrate, and the back substrate. The barrier ribs include glass at least containing oxide of tungsten, phosphorus, barium, and vanadium.
    Type: Application
    Filed: January 28, 2008
    Publication date: October 2, 2008
    Inventors: Hiroki Yamamoto, Takashi Naito, Yuichi Sawai, Motoyuki Miyata, Fusao Hojo, Keiichi Kanazawa, Takashi Fujimura, Mitsuo Hayashibara
  • Publication number: 20080238821
    Abstract: To prevent sucking of a sealing material in steps of sealing and exhaust of a plasma display panel. The plasma display panel includes a front substrate and a rear substrate, in which the peripheries thereof are sealed by a glass sealing material. A sealing portion formed by the glass sealing material is formed of a multi-layered structure including at least two types of glass with different softening points. The entirety or part of the sealing portion on an inner side of the panel is formed of glass with the highest softening point. Since the high-temperature softened glass serves as a barrier for preventing sucking of the low-temperature softened glass into the panel, it is possible to prevent sucking of the sealing material into the panel. This can improve image display characteristics.
    Type: Application
    Filed: January 25, 2008
    Publication date: October 2, 2008
    Inventors: Motoyuki MIYATA, Yuichi SAWAI, Hiroki YAMAMOTO, Takashi NAITO, Keiichi KANAZAWA, Mitsuo HAYASHIBARA, Fusao HOJO
  • Publication number: 20080238315
    Abstract: To prevent occurrence of abnormal discharge which would reduce the quality of images in a PDP. At least one of an address electrode, a bus electrode, a bus main electrode, and a black electrode of a display electrode formed on a substrate is formed of metal particles and high-resistance glass to dissipate charge accumulated on a dielectric through the high-resistance glass and to prevent charging in a glass component itself, thereby reducing abnormal discharge. The high-resistance glass is preferably realized by vanadium phosphate glass containing vanadium, phosphorus, antimony, and barium. The metal particles desirably contain flaky particles.
    Type: Application
    Filed: January 18, 2008
    Publication date: October 2, 2008
    Inventors: Fusao Hojo, Takashi Naito, Hiroki Yamamoto, Yuichi Sawai, Motoyuki Miyata, Mitsuo Hayashibara, Keiichi Kanazawa, Hideto Momose
  • Publication number: 20080203894
    Abstract: The purpose of the invention is to improve the mass productivity of display devices by using a glass substrate that prevents the degradation of an electrode caused by glass of the display device. The present invention provides a flat panel display device containing at least two substrates and a light emitting part provided between the two substrates, wherein at least one substrate of the two substrates contains SiO2 as a main component and contains 1% to 10% by weight of at least one type selected from the group consisting of La, Y, Gd, Yb, and Lu in terms of oxides, 5% to 25% by weight of R2O (R denotes one or more types selected from a group consisting of Li, K, Cs, and Rb), and 8% to 20% by weight of Al2O3, and wherein the surface electric resistance at 350° C. of the glass material is higher than 1×108 (?/square).
    Type: Application
    Filed: January 23, 2008
    Publication date: August 28, 2008
    Inventors: Motoyuki Miyata, Osamu Shiono, Yuichi Sawai, Hiroki Yamamoto, Takashi Naito, Keiichi Kanazawa, Nobuhiko Hosotani, Hiroshi Ito, Akira Hatori
  • Publication number: 20080174234
    Abstract: The purpose of the present invention is to provide a spacer having a small absolute value of the temperature coefficient of resistance, the spacer being excellent in suppressing a thermal runaway, the spacer being excellent in voltage endurance so as not to cause an abnormal discharge even if a high voltage of over 10 kV is applied, the spacer being unlikely to cause deflection of an electron beam, and a flat panel display device provided with this spacer. The spacer of the flat panel display device includes, on the surface of a glass substrate, a thin film that comprises substances exhibiting metal-like electrical conductivity dispersed in an oxide matrix exhibiting semiconductor-like electrical conductivity.
    Type: Application
    Filed: January 22, 2008
    Publication date: July 24, 2008
    Inventors: Hiroki Yamamoto, Takashi Naito, Yuichi Sawai, Osamu Shiono, Motoyuki Miyata, Hiroshi Ito, Akira Hatori, Nobuhiko Hosotani, Kyoto Honbo, Fusao Hojo