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: 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: 10286666
    Abstract: An ink discharge device is provided including an ink, an ink discharge head, and a circulator. The ink discharge head includes a nozzle, an individual liquid chamber communicated with the nozzle, a flow-in channel, and a flow-out channel. The circulator circulates the ink by letting the ink flow into the individual liquid chamber via the flow-in channel and flow out from the individual liquid chamber via the flow-out channel. A flow rate of the circulated ink is 0.10 to 1.50 times a maximum dischargeable rate of the ink discharge head. A dynamic surface tension A of the ink at 25° C. is 34.0 mN/m or less when measured by a maximum bubble pressure method at a surface lifetime of 15 msec, and the dynamic surface tension A and a static surface tension B of the ink at 25° C. satisfy the following relation: 10.0(%)?[(A?B)/(A+B)]×100?19.0(%).
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: May 14, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Masahiko Ishikawa, Hiroshi Gotou, Takahiro Yoshida, Yukio Otome
  • 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: 20180219387
    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: Application
    Filed: October 30, 2017
    Publication date: August 2, 2018
    Applicant: 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
  • Publication number: 20180212443
    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: Application
    Filed: October 30, 2017
    Publication date: July 26, 2018
    Applicant: FUJITSU TEN LIMITED
    Inventor: Yukio ISHIKAWA
  • Publication number: 20180017625
    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: Application
    Filed: May 25, 2017
    Publication date: January 18, 2018
    Applicant: FUJITSU TEN LIMITED
    Inventors: Yukio ISHIKAWA, Kensuke MATSUDA, Masahiko KUSAKI
  • Publication number: 20170283995
    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: Application
    Filed: April 3, 2017
    Publication date: October 5, 2017
    Applicant: Ishikawa Wire Netting Co., Ltd.
    Inventor: Yukio Ishikawa
  • Publication number: 20170219659
    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: Application
    Filed: December 27, 2016
    Publication date: August 3, 2017
    Applicant: FUJITSU TEN LIMITED
    Inventor: Yukio ISHIKAWA
  • Publication number: 20170198422
    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: Application
    Filed: July 27, 2015
    Publication date: July 13, 2017
    Applicant: Ishikawa Wire Netting Co., Ltd.
    Inventor: Yukio Ishikawa
  • Patent number: 9018260
    Abstract: Novel indansulfamide derivatives or a pharmaceutically acceptable salt thereof such as N-[(1S)-2,2,5,7-tetrafluoro-2,3-dihydro-1H-inden-1-yl]sulfamide, N-[(1S)-2,2,4,7-tetrafluoro-2,3-dihydro-1H-inden-1-yl]sulfamide, (+)-N-(2,2,4,6,7-pentafluoro-2,3-dihydro-1H-inden-1-yl)sulfamide, have an action of improving Seizure Severity Index (Score) in mice kindling model. Thus the compounds or the salt thereof are expected as a drug for treating epilepsy.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: April 28, 2015
    Assignee: Eisai R&D Management Co., Ltd.
    Inventors: Yuji Kazuta, Toru Watanabe, Keiichi Sorimachi, Minako Saito, Yoichi Kita, Toshiaki Tanaka, Hiroyuki Higashiyama, Takahisa Hanada, Tetsuyuki Teramoto, Takashi Kosasa, Yukio Ishikawa
  • Patent number: 8996966
    Abstract: According to one embodiment, an error correction device includes a syndrome processing unit, a generation unit, and a search processing unit. The syndrome processing unit generates a syndrome value based on received data. The generation unit generates t (t is a maximum number of correctable bits) coefficient values of an error position polynomial based on the syndrome value. The search processing unit calculates a root of the error position polynomial, with a concurrency of computation being equal to or greater than “2”, by using the coefficient values of the error position polynomial, when a number of error bits is not more than a predetermined value s (1<=s<t). The search processing unit calculates the root of the error position polynomial, with a concurrency of computation being “1”, when the number of error bits exceeds the predetermined value s.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: March 31, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Teruyuki Matsuoka, Yukio Ishikawa, Tsuyoshi Ukyou, Fuying Yang, Toshihiko Kitazume
  • Publication number: 20150039975
    Abstract: According to one embodiment, an error correction device includes a syndrome processing unit, a generation unit, and a search processing unit. The syndrome processing unit generates a syndrome value based on received data. The generation unit generates t (t is a maximum number of correctable bits) coefficient values of an error position polynomial based on the syndrome value. The search processing unit calculates a root of the error position polynomial, with a concurrency of computation being equal to or greater than “2”, by using the coefficient values of the error position polynomial, when a number of error bits is not more than a predetermined value s (1<=s<t). The search processing unit calculates the root of the error position polynomial, with a concurrency of computation being “1”, when the number of error bits exceeds the predetermined value s.
    Type: Application
    Filed: August 2, 2013
    Publication date: February 5, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Teruyuki MATSUOKA, Yukio Ishikawa, Tsuyoshi Ukyou, Fuying Yang, Toshihiko Kitazume
  • Patent number: 8924825
    Abstract: According to one embodiment, an error detecting device includes a syndrome processor, an error locator polynomial generator, and a search processor. The syndrome processor is configured to generate syndrome values based on received data. The error locator polynomial generator is configured to generate coefficients for an error locator polynomial based on the syndrome values. The search processor configured to detect an error location by calculating a root of the error locator polynomial. The search processor has a clock controller, a buffer, a polynomial generator, and a first judging module. The clock controller is configured to output or stop a clock signal according to at least one of the coefficients. The buffer is configured to drive the clock signal outputted form the clock controller. The polynomial generator is configured to calculate a part of the error locator polynomial in synchronization with the clock signal driven by the buffer.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: December 30, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Teruyuki Matsuoka, Yukio Ishikawa, Tsuyoshi Ukyo, Fuying Yang, Toshihiko Kitazume
  • Publication number: 20140371319
    Abstract: Novel indansulfamide derivatives or a pharmaceutically acceptable salt thereof such as N-[(1S)-2,2,5,7-tetrafluoro-2,3-dihydro-1H-inden-1-yl]sulfamide, N-[(1S)-2,2,4,7-tetrafluoro-2,3-dihydro-1H-inden-1-yl]sulfamide, (+)-N-(2,2,4,6,7-pentafluoro-2,3-dihydro-1H-inden-1-yl)sulfamide, have an action of improving Seizure Severity Index (Score) in mice kindling model. Thus the compounds or the salt thereof are expected as a drug for treating epilepsy.
    Type: Application
    Filed: June 17, 2013
    Publication date: December 18, 2014
    Applicant: Eisai R&D Management Co., Ltd.
    Inventors: Yuji Kazuta, Toru Watanabe, Keiichi Sorimachi, Minako Saito, Yoichi Kita, Toshiaki Tanaka, Hiroyuki Higashiyama, Takahisa Hanada, Tetsuyuki Teramoto, Takashi Kosasa, Yukio Ishikawa