Patents by Inventor Jun Yoshikawa

Jun Yoshikawa 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: 20180209090
    Abstract: A novel composition for decolorizing a dye is provided. A composition for decolorizing a dye contains a multicopper oxidase and an iodide ion.
    Type: Application
    Filed: July 28, 2015
    Publication date: July 26, 2018
    Applicants: NATIONAL UNIVERSITY CORPORATION CHIBA UNIVERSITY, GODO SHUSEI CO., LTD.
    Inventors: Seigo AMACHI, Jun YOSHIKAWA, Hirofumi HORIGUCHI
  • Publication number: 20180139977
    Abstract: [Object] The purpose is to produce fermented milk containing lactic acid bacteria and bifidobacteria while increasing and maintaining the number of live bifidobacteria by a simple method. [Solving Means] A method for producing fermented milk in which a first step for mixing raw material milk, lactic acid bacteria, and bifidobacteria and a second step for fermenting the raw material milk are carried out in order, wherein a step for adding lactase to the raw material milk (lactase addition step) is carried out before the completion of the second step and the lactase addition step is carried out at one or more time point selected from before the first step, almost simultaneously with the first step, or after the first step.
    Type: Application
    Filed: May 18, 2016
    Publication date: May 24, 2018
    Applicant: Godo Shusei Co., Ltd.
    Inventors: Kyoko Morie, Atsuko Shinada, Hirofumi Horiguchi, Jun Yoshikawa
  • Patent number: 9970109
    Abstract: Disclosed is a substrate processing method including: placing a plurality of substrates on a rotary table in a processing container; and performing a processing on the substrates while rotating the rotary table. A dummy workpiece is disposed in a gap between the substrates placed on the rotary table.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: May 15, 2018
    Assignee: Tokyo Electron Limited
    Inventors: Jun Yoshikawa, Motoshi Fukudome
  • Patent number: 9934968
    Abstract: There is provided a production method which enables stable formation of a p-type zinc oxide film and also is suitable for enlarging the area of the film. The method for producing a p-type zinc oxide film according to the present invention comprises the steps of: placing a target containing a zinc source and a substrate in a gas atmosphere containing a nitrogen source and an oxygen source and having a gas pressure of 0.1 Pa to 100 Pa, and exposing the target to arc discharge, thereby forming a precursor film containing zinc and oxygen on the substrate; and annealing the precursor film in an oxidizing atmosphere, thereby forming a p-type zinc oxide film.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: April 3, 2018
    Assignees: Nagoya Institute of Technology, NGK Insulators, Ltd.
    Inventors: Masaki Tanemura, Morimichi Watanabe, Jun Yoshikawa, Tsutomu Nanataki
  • Patent number: 9919931
    Abstract: Provided is a zinc oxide-based sputtering target capable of improving the film formation rate while suppressing arcing in the formation of a zinc oxide-based transparent conductive film by sputtering. This zinc oxide-based sputtering target includes a zinc oxide-based sintered body mainly including zinc oxide crystal grains, and has a degree of (002) orientation of 50% or greater at a sputtering surface and a density of 5.30 g/cm3 or greater.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: March 20, 2018
    Assignee: NGK Insulators, Ltd.
    Inventors: Jun Yoshikawa, Katsuhiro Imai, Koichi Kondo, Koki Kanno
  • Patent number: 9893234
    Abstract: Provided is a light emitting device composite substrate suitable for manufacturing large-area light emitting devices at low cost. The light emitting device composite substrate comprises a substrate composed of an oriented polycrystalline alumina sintered body, and a light emitting functional layer formed on the substrate and having two or more layers composed of semiconductor single crystal grains, wherein each of the two or more layers has a single crystal structure in a direction approximately normal to the substrate.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: February 13, 2018
    Assignee: NGK Insulators, Ltd.
    Inventors: Morimichi Watanabe, Jun Yoshikawa, Tsutomu Nanataki, Katsuhiro Imai, Tomohiko Sugiyama, Takashi Yoshino, Yukihisa Takeuchi, Kei Sato
  • Publication number: 20180019103
    Abstract: A microwave control method is used in a microwave plasma processing apparatus including a microwave generation unit, a waveguide for guiding a microwave generated by the microwave generation unit, a tuner for controlling a position of a movable short-circuiting plate, and a stub provided between the tuner and an antenna in the waveguide and insertable into an inner space of the waveguide. The method incudes detecting the position of the movable short-circuiting plate controlled by the tuner for the microwave outputted by the microwave generation unit, determining whether or not a difference between a reference position and the detected position of the movable short-circuiting plate is within a tolerable range, and controlling an insertion length of the stub into the inner space of the waveguide when it is determined that the difference between the position of the movable short-circuiting plate and the reference position is not within the tolerable range.
    Type: Application
    Filed: July 11, 2017
    Publication date: January 18, 2018
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Jun YOSHIKAWA, Naoki MATSUMOTO, Kazushi KANEKO
  • Publication number: 20170367357
    Abstract: [Problem] To provide a lactase solution having excellent thermal stability. [Solution] A lactase solution in which the ratio of a lactase fraction having a molecular weight of about 120 kDa measured by SDS polyacrylamide gel electrophoresis is 20% or more.
    Type: Application
    Filed: November 20, 2015
    Publication date: December 28, 2017
    Applicant: Godo Shusei Co., Ltd.
    Inventors: Tomoko Sato, Jun Yoshikawa, Hirofumi Horiguchi
  • Patent number: 9848614
    Abstract: A method for producing a lactase-containing composition which is purified by selectively removing protease contaminating the lactase using simple and easy means; a lactase-containing composition; and a dairy product containing the lactase-containing composition. A method for producing a lactase-containing composition having a reduced protease content includes: dissolving a composition containing lactase and protease in an aqueous salt solution having an electric conductivity of from 2 to 45 mS/cm; bringing the resultant solution into contact with an ion exchange resin; and collecting a fraction which is not adsorbed onto the ion exchange resin.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: December 26, 2017
    Assignee: GODO SHUSEI CO., LTD.
    Inventors: Jun Yoshikawa, Kazuma Shiota
  • Patent number: 9824869
    Abstract: Provided is a zinc oxide-based sputtering target that enables production of a zinc oxide-based sputtered film having higher transparency and electrical conductivity. The zinc oxide-based sputtering target of the present invention is composed of a zinc oxide-based sintered body including zinc oxide crystal grains as a main phase and spinel phases as a dopant-containing grain boundary phase, and the zinc oxide-based sputtering target has a degree of (002) orientation of ZnO of 80% or greater at a sputtering surface, a density of the zinc oxide-based sintered body of 5.50 g/cm3 or greater, the number of the spinel phases per area of 20 counts/100 ?m2 or greater, and a spinel phase distribution index of 0.40 or less.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: November 21, 2017
    Assignee: NGK Insulators, Ltd.
    Inventors: Jun Yoshikawa, Hirofumi Yamaguchi, Tsutomu Nanataki
  • Patent number: 9816198
    Abstract: The present invention provides a method capable of stably producing a zinc oxide single crystal in which a large amount of dopant forms a solid solution at a high level of productivity and reproducibility without using a harmful substance. The method of the present invention comprises providing a raw material powder that is mainly composed of zinc oxide, comprises at least one dopant element selected from B, Al, Ga, In, C, F, Cl, Br, I, H, Li, Na, K, N, P, As, Cu, and Ag in a total amount of 0.01 to 1 at %, and is substantially free of a crystal phase other than zinc oxide, and injecting the raw material powder to form a film mainly composed of zinc oxide on a seed substrate comprising a zinc oxide single crystal and also to crystallize the formed film in a solid phase state.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: November 14, 2017
    Assignee: NGK Insulators, Ltd.
    Inventors: Jun Yoshikawa, Katsuhiro Imai
  • Patent number: 9768352
    Abstract: Provided is a self-supporting polycrystalline GaN substrate composed of GaN-based single crystal grains having a specific crystal orientation in a direction approximately normal to the substrate. The crystal orientations of individual GaN-based single crystal grains as determined from inverse pole figure mapping by EBSD analysis on the substrate surface are distributed with tilt angles from the specific crystal orientation, the average tilt angle being 1 to 10°. There is also provided a light emitting device including the self-supporting substrate and a light emitting functional layer, which has at least one layer composed of semiconductor single crystal grains, the at least one layer having a single crystal structure in the direction approximately normal to the substrate. The present invention makes it possible to provide a self-supporting polycrystalline GaN substrate having a reduced defect density at the substrate surface, and to provide a light emitting device having a high luminous efficiency.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: September 19, 2017
    Assignee: NGK Insulators, Ltd.
    Inventors: Morimichi Watanabe, Jun Yoshikawa, Yoshitaka Kuraoka, Tsutomu Nanataki
  • Patent number: 9728417
    Abstract: An exemplary embodiment provides a method which etches a second layer in a base body to be processed having a first layer containing Ni and Si and a second layer containing Si and N which are exposed to a surface thereof. The method according to the exemplary embodiment includes (a) preparing a base body to be processed in a processing chamber, and (b) supplying a first processing gas which contains carbon and fluorine but does not contain oxygen into the processing chamber and generating plasma in the processing chamber.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: August 8, 2017
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Masaki Inoue, Toshihisa Ozu, Takehiro Tanikawa, Jun Yoshikawa
  • Patent number: 9663871
    Abstract: A crystal production method according to the present invention includes a film formation and crystallization step of spraying a raw material powder containing a raw material component to form a film containing the raw material component on a seed substrate containing a single crystal at a predetermined single crystallization temperature at which single crystallization of the raw material component occurs, and crystallizing the film containing the raw material while maintaining the single crystallization temperature. In the film formation and crystallization step, preferably, the single crystallization temperature is 900° C. or higher. Furthermore, in the film formation and crystallization step, preferably, the raw material powder and the seed substrate are each a nitride or an oxide.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: May 30, 2017
    Assignee: NGK Insulators, Ltd.
    Inventors: Nobuyuki Kobayashi, Kazuki Maeda, Koichi Kondo, Tsutomu Nanataki, Katsuhiro Imai, Jun Yoshikawa
  • Patent number: 9659754
    Abstract: The present disclosure provides a plasma processing apparatus, including: a processing chamber; an oscillator configured to output high-frequency power; a power supply unit configured to supply the high-frequency power from a specific plasma generating location into the processing chamber; a magnetic field forming unit provided outside the processing chamber and configured to forming a magnetic field at least at the specific plasma generating location; and a control unit configured to control the magnetic field formed by the magnetic field forming unit such that a relationship between an electron collision frequency fe of plasma generated in the processing chamber and a cyclotron frequency fc is fc>fe.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: May 23, 2017
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Jun Yoshikawa, Yoshio Susa, Naoki Matsumoto, Peter L. G. Ventzek
  • Publication number: 20170137326
    Abstract: There is provided a platy zinc oxide sintered compact containing 0.80 wt % or less at least one first dopant element selected from the group consisting of Al, Ga and In, the balance consisting essentially of ZnO and optionally at least one second dopant element selected from the group consisting of Br, Cl, F, Sn, Y, Pr, Ge, B, Sc, Si, Ti, Zr, Hf, Mn, Ta, W, Cu, Ni, Cr, La, Gd, Bi, Ce, Sr and Ba, the second dopant element being optional component, wherein the (002)-plane orientation in the plate surface is 60% or more. The zinc oxide sintered compact of the present invention has excellent properties such as high orientation in addition to transparency and conductivity.
    Type: Application
    Filed: January 30, 2017
    Publication date: May 18, 2017
    Applicant: NGK INSULATORS, LTD.
    Inventors: Sota OKOCHI, Jun YOSHIKAWA, Koichi KONDO
  • Publication number: 20170137325
    Abstract: There is provided a platy Mg-containing zinc oxide sintered compact containing 1 to 10 wt % Mg as a first dopant element and 0.005 wt % or more at least one second dopant element selected from the group consisting of Al, Ga and In, the balance consisting essentially of ZnO and optionally at least one third dopant element selected from the group consisting of Br, CI, F, Sn, Y, Pr, Ge, B, Sc, Si, Ti, Zr, Hf, Mn, Ta, W, Cu, Ni, Cr, La, Gd, Bi, Ce, Sr and Ba, wherein the (002)-plane or (100)-plane orientation in the plate surface is 60% or more. The Mg-containing zinc oxide sintered compact of the present invention has excellent properties such as high orientation despite solid dissolution of Mg.
    Type: Application
    Filed: January 30, 2017
    Publication date: May 18, 2017
    Applicant: NGK INSULATORS, LTD.
    Inventors: Sota OKOCHI, Jun YOSHIKAWA, Koichi KONDO
  • Patent number: 9640720
    Abstract: Provided is a surface light-emitting device comprising a substrate composed of an oriented polycrystalline zinc oxide sintered body in a plate shape, a light emitting functional layer provided on the substrate, and an electrode provided on the light emitting functional layer. According to the present invention, a surface light-emitting device having high luminous efficiency can be inexpensively provided.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: May 2, 2017
    Assignee: NGK Insulators, Ltd.
    Inventors: Morimichi Watanabe, Katsuhiro Imai, Jun Yoshikawa, Tsutomu Nanataki, Takashi Yoshino, Yukihisa Takeuchi
  • Patent number: 9627568
    Abstract: Disclosed is a photovoltaic device comprising a substrate composed of an oriented polycrystalline zinc oxide sintered body in a plate shape, a photovoltaic layer provided on the substrate, and an electrode provided on the photovoltaic layer. According to the present invention, a photovoltaic device having high photoelectric conversion efficiency can be inexpensively provided.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: April 18, 2017
    Assignee: NGK Insulators, Ltd.
    Inventors: Mikiya Ichimura, Jun Yoshikawa, Katsuhiro Imai
  • Publication number: 20170077349
    Abstract: Provided is a self-supporting polycrystalline GaN substrate composed of GaN-based single crystal grains having a specific crystal orientation in a direction approximately normal to the substrate. The crystal orientations of individual GaN-based single crystal grains as determined from inverse pole figure mapping by EBSD analysis on the substrate surface are distributed with tilt angles from the specific crystal orientation, the average tilt angle being 1 to 10°. There is also provided a light emitting device including the self-supporting substrate and a light emitting functional layer, which has at least one layer composed of semiconductor single crystal grains, the at least one layer having a single crystal structure in the direction approximately normal to the substrate. The present invention makes it possible to provide a self-supporting polycrystalline GaN substrate having a reduced defect density at the substrate surface, and to provide a light emitting device having a high luminous efficiency.
    Type: Application
    Filed: November 23, 2016
    Publication date: March 16, 2017
    Applicant: NGK INSULATORS, LTD.
    Inventors: Morimichi WATANABE, Jun YOSHIKAWA, Yoshitaka KURAOKA, Tsutomu NANATAKI