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).
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Patent number: 12338546Abstract: 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: GrantFiled: August 7, 2018Date of Patent: June 24, 2025Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Hidetoshi Takayama, Yukio Ishikawa
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Publication number: 20250031783Abstract: 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: ApplicationFiled: November 14, 2022Publication date: January 30, 2025Applicant: Ishikawa Wire Netting Co., Ltd.Inventor: Yukio Ishikawa
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Publication number: 20240197006Abstract: 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: ApplicationFiled: June 1, 2022Publication date: June 20, 2024Applicant: Ishikawa Wire Netting Co., Ltd.Inventor: Yukio Ishikawa
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Patent number: 11311530Abstract: 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: GrantFiled: May 30, 2018Date of Patent: April 26, 2022Assignee: Eisai R&D Management Co., Ltd.Inventors: Mai Miyamoto, Yukio Ishikawa
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Patent number: 11024705Abstract: 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: GrantFiled: September 21, 2017Date of Patent: June 1, 2021Assignee: Sumitomo Electric Industries, Ltd.Inventors: Shinya Kawamoto, Makoto Kiyama, Yukio Ishikawa, Katsushi Hashio
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Publication number: 20210079556Abstract: 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: ApplicationFiled: August 7, 2018Publication date: March 18, 2021Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Hidetoshi TAKAYAMA, Yukio ISHIKAWA
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Publication number: 20200381509Abstract: 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: ApplicationFiled: September 21, 2017Publication date: December 3, 2020Applicant: Sumitomo Electric Industries, Ltd.Inventors: Shinya KAWAMOTO, Makoto KIYAMA, Yukio ISHIKAWA, Katsushi HASHIO
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Patent number: 10822722Abstract: 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: GrantFiled: July 4, 2017Date of Patent: November 3, 2020Assignee: Sumitomo Electric Industries, Ltd.Inventors: Hiroshi Fukunaga, Katsushi Akita, Yukio Ishikawa
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Patent number: 10815586Abstract: 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: GrantFiled: September 14, 2017Date of Patent: October 27, 2020Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yukio Ishikawa, Hidetoshi Takayama, Hirokazu Oota, Shuuichi Kaneko
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Patent number: 10669652Abstract: 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: GrantFiled: April 3, 2017Date of Patent: June 2, 2020Assignee: ISHIKAWA WIRE NETTING CO., LTD.Inventor: Yukio Ishikawa
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Publication number: 20200155541Abstract: 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: ApplicationFiled: May 30, 2018Publication date: May 21, 2020Applicant: Eisai R&D Management Co., Ltd.Inventors: Mai Miyamoto, Yukio Ishikawa
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Patent number: 10634726Abstract: 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: GrantFiled: May 25, 2017Date of Patent: April 28, 2020Assignee: FUJITSU TEN LimitedInventors: Yukio Ishikawa, Kensuke Matsuda, Masahiko Kusaki
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Patent number: 10584431Abstract: 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: GrantFiled: July 27, 2015Date of Patent: March 10, 2020Assignee: ISHIKAWA WIRE NETTING CO., LTD.Inventor: Yukio Ishikawa
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Patent number: 10530164Abstract: 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: GrantFiled: October 30, 2017Date of Patent: January 7, 2020Assignee: FUJITSU TEN LimitedInventor: Yukio Ishikawa
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Patent number: 10523020Abstract: 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: GrantFiled: October 30, 2017Date of Patent: December 31, 2019Assignee: FUJITSU TEN LimitedInventor: Yukio Ishikawa
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Publication number: 20190352800Abstract: 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: ApplicationFiled: September 14, 2017Publication date: November 21, 2019Applicant: Sumitomo Electric Industries, Ltd.Inventors: Yukio ISHIKAWA, Hidetoshi TAKAYAMA, Hirokazu OOTA, Shuuichi KANEKO
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Publication number: 20190264348Abstract: 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: ApplicationFiled: July 4, 2017Publication date: August 29, 2019Applicant: Sumitomo Electric Industries, Ltd.Inventors: Hiroshi FUKUNAGA, Katsushi AKITA, Yukio ISHIKAWA
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Patent number: 10320204Abstract: 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: GrantFiled: October 30, 2017Date of Patent: June 11, 2019Assignee: FUJITSU TEN LIMITEDInventor: Yukio Ishikawa
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Patent number: 10048324Abstract: 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: GrantFiled: December 27, 2016Date of Patent: August 14, 2018Assignee: FUJITSU TEN LIMITEDInventor: Yukio Ishikawa
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Publication number: 20180219391Abstract: 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: ApplicationFiled: October 30, 2017Publication date: August 2, 2018Applicant: FUJITSU TEN LIMITEDInventor: Yukio ISHIKAWA