Patents by Inventor Yukio Ishikawa

Yukio Ishikawa 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: 12338546
    Abstract: A gallium arsenide single crystal including a straight body portion having a cylindrical shape, wherein a residual strain in a tangential direction in an outer circumferential portion is a compressive strain, the outer circumferential portion extending between an inner circumferential surface located 10 mm inward from an outer circumferential surface of the straight body portion toward a central axis and a location located 5 mm inward from the outer circumferential surface. There is a gallium arsenide single crystal substrate, wherein a residual strain in a tangential direction in an outer circumferential portion is a compressive strain, the outer circumferential portion extending between an inner circumference located 10 mm inward from an outer circumference toward a center and a location located 5 mm inward from the outer circumference.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: June 24, 2025
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hidetoshi Takayama, Yukio Ishikawa
  • Publication number: 20250031783
    Abstract: Provided is a face mask with metal mesh insert (1) that includes a face mask body (2) structured to cover a human mouth and around; a mask cord (3) provided to each of both lateral sides of the face mask body (2); and an antibacterial metal mesh component (4) attachable to the face mask body. The face mask body (2) has a pocket (5) into which the metal mesh component (4) is enclosed. The pocket (5) has a side-opened opening (5b), through which the metal mesh component (4) can be inserted or taken out. The side-opened opening (5b) is likely to close when the face mask with metal mesh insert (1) is worn by a human.
    Type: Application
    Filed: November 14, 2022
    Publication date: January 30, 2025
    Applicant: Ishikawa Wire Netting Co., Ltd.
    Inventor: Yukio Ishikawa
  • Publication number: 20240197006
    Abstract: Provided is an attachment for a mask (attachment (3)) structured to attach an outer face mask (copper mesh (2)), to the outside of an inner face mask (face mask 4) having a pair of ear-loop cords (4a), the attachment (3) having a cord insertion part (slit (3d)) through which each cord (4a) is allowed to pass for attachment to the face mask (4), and a mounting part (mesh mounting part (3a)) onto which the copper mesh (2) is mounted.
    Type: Application
    Filed: June 1, 2022
    Publication date: June 20, 2024
    Applicant: Ishikawa Wire Netting Co., Ltd.
    Inventor: Yukio Ishikawa
  • Patent number: 11311530
    Abstract: Provided is a therapeutic agent for Lewy body disease comprising (S)-7-(2-methoxy-3,5-dimethylpyridin-4-yl)-1-(tetrahydrofuran-3-yl)-1H-pyrazolo[4,3-c]quinolin-4(5H)-one represented by formula (I) or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: April 26, 2022
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Mai Miyamoto, Yukio Ishikawa
  • Patent number: 11024705
    Abstract: A semi-insulating gallium arsenide crystal substrate has a main surface with a plane orientation of (100) and a diameter of 2R mm, the main surface having a specific resistance with an average value of 5×107 ?·cm or more and with a standard deviation divided by the average value of the specific resistance, or with a coefficient of variation, of 0.50 or less in each of three measurement areas having their centers at distances of 0 mm, 0.5R mm, and (R-17) mm, respectively, from the center of the main surface in the [010] direction.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: June 1, 2021
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Shinya Kawamoto, Makoto Kiyama, Yukio Ishikawa, Katsushi Hashio
  • Publication number: 20210079556
    Abstract: A gallium arsenide single crystal including a straight body portion having a cylindrical shape, wherein a residual strain in a tangential direction in an outer circumferential portion is a compressive strain, the outer circumferential portion extending between an inner circumferential surface located 10 mm inward from an outer circumferential surface of the straight body portion toward a central axis and a location located 5 mm inward from the outer circumferential surface. There is a gallium arsenide single crystal substrate, wherein a residual strain in a tangential direction in an outer circumferential portion is a compressive strain, the outer circumferential portion extending between an inner circumference located 10 mm inward from an outer circumference toward a center and a location located 5 mm inward from the outer circumference.
    Type: Application
    Filed: August 7, 2018
    Publication date: March 18, 2021
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Hidetoshi TAKAYAMA, Yukio ISHIKAWA
  • Publication number: 20200381509
    Abstract: A semi-insulating gallium arsenide crystal substrate has a main surface with a plane orientation of (100) and a diameter of 2R mm, the main surface having a specific resistance with an average value of 5×107 ?·cm or more and with a standard deviation divided by the average value of the specific resistance, or with a coefficient of variation, of 0.50 or less in each of three measurement areas having their centers at distances of 0 mm, 0.5R mm, and (R-17) mm, respectively, from the center of the main surface in the [010] direction.
    Type: Application
    Filed: September 21, 2017
    Publication date: December 3, 2020
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Shinya KAWAMOTO, Makoto KIYAMA, Yukio ISHIKAWA, Katsushi HASHIO
  • Patent number: 10822722
    Abstract: In a gallium arsenide crystal body, an etching pit density of the gallium arsenide crystal body is more than or equal to 10 cm?2 and less than or equal to 10000 cm?2, and an oxygen concentration of the gallium arsenide crystal body is less than 7.0×1015 atoms·cm?3. In a gallium arsenide crystal substrate, an etching pit density of the gallium arsenide crystal substrate is more than or equal to 10 cm?2 and less than or equal to 10000 cm?2, and an oxygen concentration of the gallium arsenide crystal substrate is less than 7.0×1015 atoms·cm?3.
    Type: Grant
    Filed: July 4, 2017
    Date of Patent: November 3, 2020
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hiroshi Fukunaga, Katsushi Akita, Yukio Ishikawa
  • Patent number: 10815586
    Abstract: A GaAs-based compound semiconductor crystal includes a straight body portion having a cylindrical shape, wherein the straight body portion has a diameter of more than or equal to 110 mm and has a length of more than or equal to 100 mm and less than or equal to 400 mm, and the straight body portion has a first end surface and a second end surface having a higher specific resistance than a specific resistance of the first end surface, and a ratio R20/R10 of a specific resistance R20 at the second end surface side to a specific resistance R10 at the first end surface side is more than or equal to 1 and less than or equal to 2.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: October 27, 2020
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Yukio Ishikawa, Hidetoshi Takayama, Hirokazu Oota, Shuuichi Kaneko
  • Patent number: 10669652
    Abstract: A metal fabric (10) has a sheet form, using metal threads for warp (30) as the warp, and metal threads for weft (20) as the weft, wherein each of the metal threads for warp (30) and the metal threads for weft (20) has an average diameter of 0.03 mm or larger and 0.09 mm or smaller, the metal threads for warp (30) and the metal threads for weft (20) may be plain-woven, and the metal fabric (10) may be shaped in a square with a side of 100 mm or longer and 200 mm or shorter.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: June 2, 2020
    Assignee: ISHIKAWA WIRE NETTING CO., LTD.
    Inventor: Yukio Ishikawa
  • Publication number: 20200155541
    Abstract: Provided is a therapeutic agent for Lewy body disease comprising (S)-7-(2-methoxy-3,5-dimethylpyridin-4-yl)-1-(tetrahydrofuran-3-yl)-1H-pyrazolo[4,3-c]quinolin-4(5H)-one represented by formula (I) or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: May 30, 2018
    Publication date: May 21, 2020
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Mai Miyamoto, Yukio Ishikawa
  • Patent number: 10634726
    Abstract: A voltage detecting device according to an aspect of embodiments includes a detecting unit and a mode switching unit. The detecting unit detects voltages of battery cells of a battery stack in which the battery cells are connected to each other. The mode switching unit switches between an active mode in which the detecting unit detects the voltages and a standby mode in which a current flowing into the detecting unit is less than a predetermined value. Moreover, the detecting unit includes a voltage detecting unit that detects the voltages of the battery cells and/or a voltage of a power supply of the detecting unit in a predetermined interval. The mode switching unit switches between the active mode and the standby mode in accordance with a timing at which the voltage detecting unit detects the voltage (s).
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: April 28, 2020
    Assignee: FUJITSU TEN Limited
    Inventors: Yukio Ishikawa, Kensuke Matsuda, Masahiko Kusaki
  • Patent number: 10584431
    Abstract: A metal fabric (10) uses warp metal wires (40) as the warp, and weft metal wires (50) as the weft, where the warp metal wires (40) and the weft metal wires (50) are composed of different metal materials. A curtain (100) as an interior decoration uses the metal fabric (10). A partition member (200) is configured to have the metal fabric (10) and a frame (210) which supports the outer circumference of the metal fabric (10). A clothing is configured to contain the metal fabric (10), and an electromagnetic shielding member is configured to contain the metal fabric (10).
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: March 10, 2020
    Assignee: ISHIKAWA WIRE NETTING CO., LTD.
    Inventor: Yukio Ishikawa
  • Patent number: 10530164
    Abstract: An electric storage apparatus according to one aspect of an embodiment includes a plurality of storage batteries, a virtual processing unit, and a connection controlling unit. The virtual processing unit virtually and sequentially connects in parallel two or more storage batteries, of the plurality of storage batteries, having a potential difference or potential differences within a predetermined range so as to equalize electric potentials of the two or more storage batteries. The connection controlling unit connects in parallel the two or more storage batteries in a connection order for maximizing the number of the two or more storage batteries to be connected in parallel when the virtual processing unit sequentially connects in parallel the two or more storage batteries in an order from highest electric potential to lowest one and in an order from lowest electric potential to highest one.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: January 7, 2020
    Assignee: FUJITSU TEN Limited
    Inventor: Yukio Ishikawa
  • Patent number: 10523020
    Abstract: An electric storage apparatus according to one aspect of an embodiment includes a battery unit, a determination unit, a virtual processing unit, and a connection controlling unit. The battery unit includes storage batteries to be connected in parallel. The determination unit determines, when the battery unit is started up, a startup type indicating a discharge start or a charge start. The virtual processing unit generates connection orders. Each of the connection orders is obtained by virtually and sequentially connecting in parallel storage batteries, of the storage batteries, having potential differences within a predetermined range so as to equalize electric potentials of the storage batteries. The connection controlling unit selects, among from the connection orders, a connection order in which the equalized electric potential is an electric potential according to the startup type determined by the determination unit, so as to connect in parallel the storage batteries.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: December 31, 2019
    Assignee: FUJITSU TEN Limited
    Inventor: Yukio Ishikawa
  • Publication number: 20190352800
    Abstract: A GaAs-based compound semiconductor crystal includes a straight body portion having a cylindrical shape, wherein the straight body portion has a diameter of more than or equal to 110 mm and has a length of more than or equal to 100 mm and less than or equal to 400 mm, and the straight body portion has a first end surface and a second end surface having a higher specific resistance than a specific resistance of the first end surface, and a ratio R20/R10 of a specific resistance R20 at the second end surface side to a specific resistance R10 at the first end surface side is more than or equal to 1 and less than or equal to 2.
    Type: Application
    Filed: September 14, 2017
    Publication date: November 21, 2019
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Yukio ISHIKAWA, Hidetoshi TAKAYAMA, Hirokazu OOTA, Shuuichi KANEKO
  • Publication number: 20190264348
    Abstract: In a gallium arsenide crystal body, an etching pit density of the gallium arsenide crystal body is more than or equal to 10 cm?2 and less than or equal to 10000 cm?2, and an oxygen concentration of the gallium arsenide crystal body is less than 7.0×1015 atoms·cm?3. In a gallium arsenide crystal substrate, an etching pit density of the gallium arsenide crystal substrate is more than or equal to 10 cm?2 and less than or equal to 10000 cm?2, and an oxygen concentration of the gallium arsenide crystal substrate is less than 7.0×1015 atoms·cm?3.
    Type: Application
    Filed: July 4, 2017
    Publication date: August 29, 2019
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Hiroshi FUKUNAGA, Katsushi AKITA, Yukio ISHIKAWA
  • Patent number: 10320204
    Abstract: An electric storage apparatus according to one exemplary aspect of an embodiment of the disclosure includes a battery unit, a determination unit, and a connection controlling unit. In the battery unit, a plurality of storage batteries is connected in parallel. Each of the storage batteries includes serially connected electric storage elements.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: June 11, 2019
    Assignee: FUJITSU TEN LIMITED
    Inventor: Yukio Ishikawa
  • Patent number: 10048324
    Abstract: There is provided a voltage detecting device. A plurality of detecting units are configured to detect voltages of a plurality of battery stacks of a battery pack having the plurality of battery stacks each having a plurality of battery cells connected, at intervals of a predetermined period, respectively. A mode switching unit is configured to perform switching between an active mode in which the detecting units detect the voltages and a standby mode in which the value of an electric current flowing in the detecting units is smaller than a predetermined value. A timing changing unit is configured to change start timings or/and finish timings of the active mode.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: August 14, 2018
    Assignee: FUJITSU TEN LIMITED
    Inventor: Yukio Ishikawa
  • Publication number: 20180219391
    Abstract: An electric storage apparatus according to one exemplary aspect of an embodiment of the disclosure includes a battery unit, a determination unit, and a connection controlling unit. In the battery unit, a plurality of storage batteries is connected in parallel. Each of the storage batteries includes serially connected electric storage elements.
    Type: Application
    Filed: October 30, 2017
    Publication date: August 2, 2018
    Applicant: FUJITSU TEN LIMITED
    Inventor: Yukio ISHIKAWA