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: 20220157946
    Abstract: Provided is a ?-Ga2O3 based semiconductor film which is a semiconductor film in a circular shape having a crystal having a corundum-type crystal structure composed of ?-Ga2O3 or an ?-Ga2O3 solid solution as a main phase. The maximum value ?max and the minimum value ?min for off-angles at the center point X and four outer circumferential points A, B, C, and D of a surface of the semiconductor film satisfy the relationship of ?max-?min?0.30°. The off-angle is defined as an inclination angle ? of a crystal axis oriented in the substantially normal direction of the semiconductor film with respect to the film surface normal of the semiconductor film.
    Type: Application
    Filed: January 31, 2022
    Publication date: May 19, 2022
    Applicant: NGK INSULATORS, LTD.
    Inventors: Hiroshi FUKUI, Morimichi WATANABE, Jun YOSHIKAWA
  • Publication number: 20210404089
    Abstract: Provided is a base substrate including an orientation layer used for crystal growth of a nitride or oxide of a Group 13 element, in which a front surface on a side used for the crystal growth of the orientation layer is composed of a material having a corundum-type crystal structure having an a-axis length and/or c-axis length larger than that of sapphire, the orientation layer contains a material selected from the group consisting of ?-Cr2O3, ?-Fe2O3, ?-Ti2O3, ?-V2O3, and ?-Rh2O3, or a solid solution containing two or more selected from the group consisting of ?-Al2O3, ?-Cr2O3, ?-Fe2O3, ?-Ti2O3, ?-V2O3, and ?-Rh2O3, and a half width of an X-ray rocking curve of a (104) plane of the corundum-type crystal structure is 500 arcsec. or less.
    Type: Application
    Filed: September 7, 2021
    Publication date: December 30, 2021
    Applicant: NGK INSULATORS, LTD.
    Inventors: Morimichi WATANABE, Jun YOSHIKAWA
  • Publication number: 20210404090
    Abstract: Provided is a base substrate including an orientation layer used for crystal growth of a nitride or oxide of a Group 13 element. A front surface of the orientation layer on a side used for crystal growth is composed of a material having a corundum-type crystal structure having an a-axis length and/or c-axis length larger than that of sapphire. The orientation layer contains a solid solution containing two or more selected from the group consisting of ?-Al2O3, ?-Cr2O3, ?-Fe2O3, ?-Ti2O3, ?-V2O3, and ?-Rh2O3.
    Type: Application
    Filed: September 7, 2021
    Publication date: December 30, 2021
    Applicant: NGK INSULATORS, LTD.
    Inventors: Morimichi WATANABE, Jun YOSHIKAWA
  • Publication number: 20210384300
    Abstract: Provided is a SiC composite substrate including a biaxially-oriented SiC layer in which SiC is oriented in both a c-axis direction and an a-axis direction, and a SiC polycrystalline layer provided on one surface of the biaxially-oriented SiC layer. A joint interface of the biaxially-oriented SiC layer and the SiC polycrystalline layer has an uneven shape, which has an amount of unevenness of 1 to 200 ?m.
    Type: Application
    Filed: August 23, 2021
    Publication date: December 9, 2021
    Applicant: NGK INSULATORS, LTD.
    Inventors: Kiyoshi MATSUSHIMA, Jun YOSHIKAWA, Morimichi WATANABE, Risa MIYAKAZE
  • Publication number: 20210384145
    Abstract: Provided is a SiC composite substrate including a biaxially-oriented SiC layer in which SiC is oriented in both a c-axis direction and an a-axis direction, and a SiC polycrystalline layer provided on one surface of the biaxially-oriented SiC layer. Pores are present in the SiC composite substrate.
    Type: Application
    Filed: August 20, 2021
    Publication date: December 9, 2021
    Applicant: NGK INSULATORS, LTD.
    Inventors: Kiyoshi MATSUSHIMA, Jun YOSHIKAWA, Morimichi WATANABE, Risa MIYAKAZE
  • Publication number: 20210355602
    Abstract: Provided is a ground substrate includes an orientation layer used for crystal growth of a nitride or oxide of a Group 13 element. The front surface of the orientation layer on the side used for the crystal growth is composed of a material having a corundum-type crystal structure having an a-axis length and/or c-axis length larger than that of sapphire. A plurality of pores are present in the orientation layer.
    Type: Application
    Filed: July 28, 2021
    Publication date: November 18, 2021
    Applicant: NGK INSULATORS, LTD.
    Inventors: Hiroshi FUKUI, Morimichi WATANABE, Jun YOSHIKAWA
  • Patent number: 11136569
    Abstract: Provided are a novel isoamylase improved in optimum temperature, and more specifically, improved in heat resistance, and a process for producing the isoamylase. An isoamylase having at least one amino acid mutation selected from the group consisting of D268A, M277I, A549P, A554P and A580T in an isoamylase consisting of an amino acid sequence represented by SEQ ID No: 1 or an isoamylase consisting of the amino acid sequence represented by SEQ ID No: 1 and having deletion, substitution or insertion of one to several amino acid residues.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: October 5, 2021
    Assignee: GODO SHUSEI CO., LTD.
    Inventors: Masahiro Baba, Ryoko Sano, Shun Ogawa, Hirofumi Horiguchi, Jun Yoshikawa
  • Publication number: 20210301422
    Abstract: A SiC composite substrate includes a SiC single crystal layer and at least one biaxially oriented SiC layer. The at least one biaxially oriented SiC layer is disposed on the SiC single crystal. In the biaxially oriented SiC layer, the SiC is oriented in both a c-axis direction and an a-axis direction. The biaxially oriented SiC layer has pores and has a density of defect reaching the surface of 1.0×101/cm2 or less.
    Type: Application
    Filed: June 11, 2021
    Publication date: September 30, 2021
    Applicant: NGK INSULATORS, LTD.
    Inventors: Risa MIYAKAZE, Kiyoshi MATSUSHIMA, Jun YOSHIKAWA, Morimichi WATANABE
  • Patent number: 11007411
    Abstract: Provided is a method for manufacturing an iron golf club head by forging a single round rod member with a pair of dies to form, as a single piece, a body and a neck into which a shaft is to be inserted. The method includes: a first step of heating the single round rod member into a heated material; a second step of placing the heated material in the pair of dies; and a third step of forging the heated material placed in the pair of dies. In the third step, the heated material is prevented from flowing out from parting surfaces of the respective dies at a sole side of the body in the pair of dies, and the heated material blocked at the sole side in the pair of dies flows toward each of a toe of the body and the neck in the pair of dies.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: May 18, 2021
    Assignees: Mizuno Corporation, Chuo Industries, Ltd.
    Inventors: Kazuhiro Doi, Tetsuya Kanayama, Jun Yoshikawa
  • Publication number: 20210013010
    Abstract: Examples of a plasma device includes a coaxial waveguide having an inner conductor and an outer conductor enclosing the inner conductor with a first gap provided between the outer conductor and the inner conductor, the coaxial waveguide having a shape of branching at a plurality of branch parts, a plurality of rods having a conductor and a dielectric enclosing the conductor with a second gap provided between the dielectric and the conductor, the plurality of rods connecting two end parts of the coaxial waveguide branched at the branch parts, so as to connect the first gap and the second gap, and a conductive stub provided at a branched portion, obtained by branching at the branch parts, of the coaxial waveguide, the conductive stub being insertable to and removable from the first gap.
    Type: Application
    Filed: July 6, 2020
    Publication date: January 14, 2021
    Inventors: Jun Yoshikawa, Toshihisa Nozawa
  • Publication number: 20200395209
    Abstract: Methods of and systems for reforming films comprising silicon nitride are disclosed. Exemplary methods include providing a substrate within a reaction chamber, forming activated species by irradiating a reforming gas with microwave radiation, and exposing substrate to the activated species. A pressure within the reaction chamber during the step of forming activated species can be less than 50. Pa.
    Type: Application
    Filed: June 9, 2020
    Publication date: December 17, 2020
    Inventors: Shinya Yoshimoto, Jun Yoshikawa, Toshihisa Nozawa
  • Patent number: 10832892
    Abstract: An antenna according to an aspect includes: a dielectric window having a first surface and a second surface, the second surface having an annular recessed surface and a flat surface surrounded by the recessed surface; a slot plate; a dielectric plate; a heat transfer member made of metal and having an upper surface and a lower surface opposing each other; a cooling jacket; and a heater, in which the upper surface includes a plurality of first regions and a second region, the cooling jacket is mounted on the plurality of first regions, the second region is recessed further toward the lower surface side than the plurality of first regions, the heater is mounted on the second region, and each of the plurality of first regions is provided at a position at least partially overlapping with the flat surface when viewed in a direction parallel to a central axis.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: November 10, 2020
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Kazuki Takahashi, Yuki Kawada, Naoki Matsumoto, Takahiro Senda, Koji Koyama, Shohei Fukano, Jun Yoshikawa, Hiroyuki Kondo, Takashi Minakawa
  • Publication number: 20200291371
    Abstract: Provided are a novel isoamylase improved in optimum temperature, and more specifically, improved in heat resistance, and a process for producing the isoamylase. An isoamylase having at least one amino acid mutation selected from the group consisting of D268A, M277I, A549P, A554P and A580T in an isoamylase consisting of an amino acid sequence represented by SEQ ID No: 1 or an isoamylase consisting of the amino acid sequence represented by SEQ ID No: 1 and having deletion, substitution or insertion of one to several amino acid residues.
    Type: Application
    Filed: May 26, 2017
    Publication date: September 17, 2020
    Applicant: GODO SHUSEI CO., LTD.
    Inventors: Masahiro BABA, Ryoko SANO, Shun OGAWA, Hirofumi HORIGUCHI, Jun YOSHIKAWA
  • Publication number: 20200254314
    Abstract: Provided is a method for manufacturing an iron golf club head by forging a single round rod member with a pair of dies to form, as a single piece, a body and a neck into which a shaft is to be inserted. The method includes: a first step of heating the single round rod member into a heated material; a second step of placing the heated material in the pair of dies; and a third step of forging the heated material placed in the pair of dies. In the third step, the heated material is prevented from flowing out from parting surfaces of the respective dies at a sole side of the body in the pair of dies, and the heated material blocked at the sole side in the pair of dies flows toward each of a toe of the body and the neck in the pair of dies.
    Type: Application
    Filed: April 30, 2020
    Publication date: August 13, 2020
    Inventors: Kazuhiro DOI, Tetsuya KANAYAMA, Jun YOSHIKAWA
  • Patent number: 10716314
    Abstract: Provided is a method for manufacturing a fermented milk product, including sequentially performing a first step of mixing raw material milk and lactic acid bacteria to obtain a mixed liquid, and a second step of fermenting the mixed liquid, characterized by performing a step of adding a Paenibacillus-derived protease to the raw material milk and/or the mixed liquid (protease addition step) before the second step is completed. According to this manufacturing method, the hardness of the fermented milk product can be adjusted to a desired value while original smoothness of the fermented milk product is maintained.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: July 21, 2020
    Assignee: GODO SHUSEI CO., LTD.
    Inventors: Tomoko Sato, Jun Yoshikawa
  • Patent number: 10717679
    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: Grant
    Filed: January 30, 2017
    Date of Patent: July 21, 2020
    Assignee: NGK Insulators, Ltd.
    Inventors: Sota Okochi, Jun Yoshikawa, Koichi Kondo
  • Publication number: 20200216364
    Abstract: An oriented ceramic sintered body production method includes (a) a step of preparing a ceramic compact before firing into an oriented ceramic sintered body; and (b) a step of obtaining an oriented ceramic sintered body by sandwiching the ceramic compact between a pair of releasing sheets, placing the ceramic compact and the releasing sheets in a hot press firing furnace, and hot press firing the ceramic compact while applying a pressure by a pair of punches through the pair of releasing sheets, wherein each of the releasing sheets is a releasing sheet such that, after the releasing sheet is sandwiched between PET films, is then placed and vacuum-packed on a stainless steel sheet, and is isostatically pressed at 200 kg/cm2, a surface of the releasing sheet on the side opposite from the stainless steel sheet has a profile curve with a maximum profile height Pt of 0.8 ?m or less.
    Type: Application
    Filed: March 13, 2020
    Publication date: July 9, 2020
    Applicant: NGK INSULATORS, LTD.
    Inventors: Morimichi WATANABE, Kei SATO, Kiyoshi MATSUSHIMA, Takahiro MAEDA, Jun YOSHIKAWA, Tsutomu NANATAKI
  • Patent number: 10688354
    Abstract: Provided is a method for manufacturing an iron golf club head by forging a single round rod member with a pair of dies to form, as a single piece, a body and a neck into which a shaft is to be inserted. The method includes: a first step of heating the single round rod member into a heated material; a second step of placing the heated material in the pair of dies; and a third step of forging the heated material placed in the pair of dies. In the third step, the heated material is prevented from flowing out from parting surfaces of the respective dies at a sole side of the body in the pair of dies, and the heated material blocked at the sole side in the pair of dies flows toward each of a toe of the body and the neck in the pair of dies.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: June 23, 2020
    Assignees: Mizuno Corporation, Chuo Industries, Ltd.
    Inventors: Kazuhiro Doi, Tetsuya Kanayama, Jun Yoshikawa
  • Patent number: 10679826
    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 includes 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: Grant
    Filed: July 11, 2017
    Date of Patent: June 9, 2020
    Assignee: Tokyo Electron Limited
    Inventors: Jun Yoshikawa, Naoki Matsumoto, Kazushi Kaneko
  • Publication number: 20200161090
    Abstract: A plasma processing apparatus includes a processing container that defines a processing space, a gas supply unit provided on a sidewall of the processing container and configured to supply gas to the processing space, a dielectric member having a facing surface that faces the processing space, and an antenna provided on a surface opposite to the facing surface of the dielectric member and configured to radiate microwaves that turn the gas into plasma to the processing space through the dielectric member. The gas supply unit includes a transport hole transporting the gas to a position where the gas does not reach the processing space in the inside of the sidewall of the processing container and an injection hole communicated to the transport hole and configured to inject the gas transported to the position into the processing space. The injection hole has a diameter larger than that of the transport hole.
    Type: Application
    Filed: January 24, 2020
    Publication date: May 21, 2020
    Applicant: TOKYO ELECTRON LIMITED
    Inventor: Jun YOSHIKAWA