Patents by Inventor Hitoshi Ishikawa

Hitoshi 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).

  • Publication number: 20130230779
    Abstract: An object of the present invention is to provide a gel electrolyte for a lithium ion secondary battery having flame retardancy over a long period and a good capacity maintenance rate. The gel electrolyte for a lithium ion secondary battery according to the exemplary embodiment contains a lithium salt, a copolymer of at least one first monomer selected from compounds represented by chemical formulae (1) and (2) and a second monomer represented by chemical formula (4), at least one oxo-acid ester derivative of phosphorus selected from compounds represented by chemical formulae (5) to (7), and at least one disulfonate ester selected from a cyclic-chain type disulfonate ester represented by chemical formula (8) and a linear-chain type disulfonate ester represented by chemical formula (9).
    Type: Application
    Filed: December 22, 2011
    Publication date: September 5, 2013
    Applicant: NEC ENERGY DEVICES, LTD.
    Inventors: Shinako Kaneko, Yasutaka Kono, Hitoshi Ishikawa
  • Patent number: 8455142
    Abstract: A non-aqueous electrolyte can suppress decomposition of a solvent, improve the cycle life of a secondary battery, suppress the rise of resistance of a secondary battery and improve the capacity maintenance ratio of a secondary battery.
    Type: Grant
    Filed: April 7, 2009
    Date of Patent: June 4, 2013
    Assignee: NEC Energy Devices, Ltd.
    Inventors: Hitoshi Ishikawa, Yasutaka Kono, Koji Utsugi, Yoko Hashizume, Shinako Kaneko, Hiroshi Kobayashi
  • Patent number: 8377596
    Abstract: There are provided a nonaqueous-type electrolyte solution having high flame retardancy and a good capacity retention rate, and a device comprising the nonaqueous-type electrolyte solution. The nonaqueous-type electrolyte solution is used in a device comprising a positive electrode, a negative electrode and the nonaqueous-type electrolyte solution, and contains a lithium salt and a compound having a phosphazene structure, and further contains 0.05% by mass or more and 12.0% by mass or less of at least one disulfonate ester selected from a cyclic disulfonate ester and a chain disulfonate ester based on the total of the nonaqueous-type electrolyte solution.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: February 19, 2013
    Assignee: NEC Energy Devices, Ltd.
    Inventors: Shinako Kaneko, Hitoshi Ishikawa, Yasutaka Kono, Yoko Hashizume
  • Publication number: 20130029218
    Abstract: A nonaqueous electrolyte secondary battery comprising positive and negative electrodes capable of absorbing and desorbing lithium ions; a nonaqueous electrolytic solution; and a separator provided between the positive electrode and the negative electrode. The negative electrode comprises a negative electrode active material layer containing at least a styrene polymer as a binder in a content of 0.3 to 8.0 mass % based on the total mass of the negative electrode active material layer. The nonaqueous electrolytic solution contains at least a cyclic sulfonic acid ester including at least two sulfonyl groups in a content of 0.002 to 5.0 mass % based on the total mass of the nonaqueous electrolytic solution.
    Type: Application
    Filed: February 8, 2011
    Publication date: January 31, 2013
    Applicant: NEC ENERGY DEVICES, LTD.
    Inventors: Ippei Waki, Hideaki Sasaki, Takehiro Noguchi, Yasutaka Kono, Hitoshi Ishikawa
  • Publication number: 20130027414
    Abstract: An image generating device includes: a gravity parameter changing section for changing a parameter relating to gravity of each of a plurality of rigid bodies which are constrained to one another and included in a first object based on a positional relationship between each of the plurality of rigid bodies and a second object; a physical calculation section for physically calculating a motion of each of the plurality of rigid bodies included in the first object based on the changed parameter; and an image rendering section for rendering an image representing a surface of the first object based on the motions of the plurality of rigid bodies included in the first object.
    Type: Application
    Filed: July 16, 2012
    Publication date: January 31, 2013
    Applicant: SONY COMPUTER ENTERTAINMENT INC.
    Inventors: Fumito Ueda, Hitoshi Ishikawa, Rui Guerreiro, Atsuhiko Terada, Chihiro Kanno, Toshihiro Kamei
  • Patent number: 8349472
    Abstract: An organic EL device including at least an anode, a cathode and an organic light-emitting zone with high brightness is provided. A mixture containing at least two compounds is used for a light-emitting zone and the spectrum of the luminescence from light-emitting zone includes at least one peak at a wavelength which is different from neither of fluorescent peak positions of the compounds included in light-emitting zone.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: January 8, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yukiko Morioka, Atsushi Oda, Hitoshi Ishikawa, Satoru Toguchi, Hiroshi Tada
  • Publication number: 20120322522
    Abstract: An object control device includes an action control unit configured to control an action of a first object, an action of a second object, and an action of an item, in a virtual space. The object control device also includes an item/object storing unit configured to store first object identification information and item identification information in association with each other, when the action control unit controls the first object to possess the item. The object control device also includes a collision determining unit configured to determine whether the item and the second object have collided. When the collision determining unit determines that the item and the second object have collided, the action control unit acquires the first object identification information stored in association with the item identification information and controls the second object to perform a first action based on the first object identification information.
    Type: Application
    Filed: June 8, 2012
    Publication date: December 20, 2012
    Applicant: SONY COMPUTER ENTERTAINMENT INC.
    Inventors: Hitoshi Ishikawa, Masashi Kudo, Fumito Ueda
  • Publication number: 20120315546
    Abstract: To provide high energy density, good cycle properties and rate characteristics and long-term safety of a lithium ion battery containing at least an ionic liquid and a lithium salt. The above problems are solved by suppressing reduction and decomposition of the ionic liquid on an anode by using a graphite coated with an amorphous carbon or onto which an amorphous carbon is deposited as an anode active material.
    Type: Application
    Filed: August 13, 2012
    Publication date: December 13, 2012
    Applicant: NEC TOKIN CORPORATION
    Inventors: Shinako Kaneko, Hitoshi Ishikawa, Yasutaka Kono, Yoko Hashizume, Hiroshi Kobayashi
  • Publication number: 20120313931
    Abstract: Provided is an image generating device for generating an image of an object including a plurality of elements connected to one another. The image generating device includes: a calculating section for iteratively calculating a motion of each element of the plurality of elements based on a physical constraint condition of the each element with respect to another connected element; a parent-child information acquiring section for acquiring parent-child information corresponding to a connection between the each element and the another element based on information indicating an element having a predetermined relationship with another object; a correcting section for correcting a position of a child element with respect to a parent element based on the parent-child information and the motion of the each element; and an image generating section for generating information on the image of the object based on the corrected position of the each element.
    Type: Application
    Filed: June 6, 2012
    Publication date: December 13, 2012
    Applicant: SONY COMPUTER ENTERTAINMENT INC.
    Inventors: Hiroshi MATSUIKE, Junichi HOSONO, Tomohito ITO, Hitoshi ISHIKAWA
  • Publication number: 20120301795
    Abstract: The exemplary embodiment has an object to provide a nonaqueous electrolyte solution having a flame retardancy over a long period and having a good capacity maintenance rate. The exemplary embodiment is a nonaqueous electrolyte solution containing a lithium salt, at least one oxo-acid ester derivative of phosphorus selected from compounds represented by a predetermined formula, and at least one disulfonate ester selected from a cyclic disulfonate ester and a linear disulfonate ester represented by the predetermined formulae.
    Type: Application
    Filed: February 10, 2011
    Publication date: November 29, 2012
    Applicant: NEC ENERGY DEVICES, LTD.
    Inventors: Shinako Kaneko, Hitoshi Ishikawa, Yoko Hashizume, Eiji Suzuki
  • Publication number: 20120303343
    Abstract: An object placement managing unit (44) controls whether or not to change the position or direction of a first object according to a positional relationship between a passive area determined based on the position of the first object, and a judging area determined based on the position of a second object. The object placement managing unit (44) controls whether or not to change the position or direction of the second object according to a positional relationship between an active area determined based on the position of the first object and differing from the passive area, and the judging area.
    Type: Application
    Filed: April 3, 2012
    Publication date: November 29, 2012
    Applicant: SONY COMPUTER ENTERTAINMENT INC.
    Inventors: Hajime SUGIYAMA, Hitoshi ISHIKAWA, Chihiro KANNO, Tomohisa KANO
  • Publication number: 20120288769
    Abstract: Disclosed is a highly safe lithium ion secondary battery which has good life characteristics. Also disclosed is a gel electrolyte for a lithium ion secondary battery, which contains a lithium salt, a copolymer of specific monomers, a specific compound that has a phosphazene structure, and at least one compound selected from among specific cyclic disulfonic acid esters, specific chain disulfonic acid esters and specific sultone compounds.
    Type: Application
    Filed: May 11, 2012
    Publication date: November 15, 2012
    Applicant: NEC ENERGY DEVICES, LTD.
    Inventors: Yasutaka KONO, Shinako KANEKO, Yoko HASIZUME, Hitoshi ISHIKAWA
  • Publication number: 20120219865
    Abstract: There are provided a nonaqueous-type electrolyte solution having high flame retardancy and a good capacity retention rate, and a device comprising the nonaqueous-type electrolyte solution. The nonaqueous-type electrolyte solution is used in a device comprising a positive electrode, a negative electrode and the nonaqueous-type electrolyte solution, and contains a lithium salt and a compound having a phosphazene structure, and further contains 0.05% by mass or more and 12.0% by mass or less of at least one disulfonate ester selected from a cyclic disulfonate ester and a chain disulfonate ester based on the total of the nonaqueous-type electrolyte solution.
    Type: Application
    Filed: October 19, 2010
    Publication date: August 30, 2012
    Applicant: NEC ENERGY DEVICES, LTD.
    Inventors: Shinako Kaneko, Hitoshi Ishikawa, Yasutaka Kono, Yoko Hashizume
  • Publication number: 20120115037
    Abstract: The present invention provides a polymer gel electrolyte capable of inhibiting the cell expansion of a polymer secondary battery and improving the cycle characteristics and high-temperature storage characteristics of a polymer secondary battery. The present invention relates to a polymer gel electrolyte comprising an aprotic solvent; a supporting salt; a cyclic sulfonic acid ester which includes at least two sulfonyl groups; and a crosslinked polymer obtained by crosslinking a methacrylic acid ester polymer represented by general formula (1) below. In the general formula (1), n meets 1800<n<3000 and m meets 350<m<600.
    Type: Application
    Filed: July 9, 2009
    Publication date: May 10, 2012
    Applicants: DAI-ICHI KOGYO SEIYAKU CO., LTD., NEC ENERGY DEVICES, LTD.
    Inventors: Yasutaka Kono, Koji Utsugi, Hiroshi Kobayashi, Hitoshi Ishikawa, Manabu Kikuta, Michiyuki Kono
  • Publication number: 20110274982
    Abstract: There is provided a lithium ion battery which maintains the flame retardancy of an electrolyte over a long period of time, has high energy density, and has improved charge/discharge cycle characteristics, high temperature storage characteristics, and rate characteristics. The lithium ion battery according to the present exemplary embodiment is a lithium ion battery comprising an electrolyte containing at least an ionic liquid and a lithium salt, a positive electrode, and a negative electrode, wherein the negative electrode includes a negative electrode active material which is a carbon material treated with a surface treatment agent.
    Type: Application
    Filed: July 20, 2011
    Publication date: November 10, 2011
    Inventors: Shinako KANEKO, Hitoshi ISHIKAWA, Yasutaka KONO, Yoko HASHIZUME
  • Patent number: 8016672
    Abstract: A game device includes a player's character controller operative to control the movement of a player's character on a map, a non-player character controller operative to cause, of those non-player characters located on the map, non-player characters located within a predetermined range from the position of the player's character to join a procession following the player's character, and to move the non-player characters belonging to the procession to the position previously occupied by the player's character to allow the non-player characters to follow the player's character, and a procession controller operative to increase, upon receipt of a predetermined control input, the speed at which the non-player characters belonging to the procession to move to the position previously occupied by the player's character and to gather the non-player characters near the player's character.
    Type: Grant
    Filed: January 21, 2009
    Date of Patent: September 13, 2011
    Assignee: Sony Computer Entertainment Inc.
    Inventors: Takahisa Suzuki, Yusuke Iida, Hitoshi Ishikawa, Hiroyuki Goto
  • Publication number: 20110159379
    Abstract: An object of this invention is to provide a highly safe secondary battery employing a non-flammable electrolyte solution. The secondary battery has a positive pole comprising an oxide for storing and releasing lithium ions, a negative pole comprising a carbon material for storing and releasing lithium ions, and an electrolyte solution. The electrolyte solution comprises 1.5 mol/L or more of a lithium salt, or 1.0 mol/L or more of a lithium salt and 20% by volume or more of a phosphate ester derivative.
    Type: Application
    Filed: September 11, 2009
    Publication date: June 30, 2011
    Applicants: NEC CORPORATION, NEC ENERGY DEVICES, LTD.
    Inventors: Kazuaki Matsumoto, Kentaro Nakahara, Shigeyuki Iwasa, Kaichiro Nakano, Koji Utsugi, Hitoshi Ishikawa, Shinako Kaneko
  • Patent number: 7952446
    Abstract: A microcomputer includes: a CPU executing a predetermined calculation process; and a PWM timer generating a PWM pulse. The PWM timer includes a RAM for storing a duty value of the PWM pulse and a PWM controller for generating the PWM pulse. The PWM controller includes a PWM counter for counting up from a predetermined value as an initial value. The PWM pulse has an unit waveform, which is generated based on comparison between the duty value of the RAM and an output value of the PWM counter. The RAM outputs a new duty value at every comparison without functioning the CPU so that the duty value of the PWM pulse is changed in chronological order.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: May 31, 2011
    Assignee: Denso Corporation
    Inventors: Tomoharu Hayakawa, Hiroyuki Morita, Hitoshi Ishikawa, Tatsuya Aizawa, Yu Takeuchi
  • Publication number: 20110070504
    Abstract: This invention relates to a highly safe secondary battery. In the secondary battery of this invention, a positive electrode is formed of an oxide which adsorbs/desorbs lithium ions; a negative electrode is formed of a carbon material which adsorbs/desorbs lithium ions; and an electrolyte solution is formed of an ion liquid and a phosphoric acid ester derivative. Consequently, the secondary battery can be highly safe. Since a phosphate ester and an ion liquid are contained at the same time, high discharge capacity can be maintained even when the phosphate ester is used at a high concentration.
    Type: Application
    Filed: May 14, 2009
    Publication date: March 24, 2011
    Applicants: NEC CORPORATION, NEC ENERGY DEVICES, LTD.
    Inventors: Kazuaki Matsumoto, Kentaro Nakahara, Shigeyuki Iwasa, Hitoshi Ishikawa, Shinako Kaneko, Koji Utsugi
  • Patent number: 7830286
    Abstract: An AD converter includes an input circuit, an operation circuit and a bus interface. The input circuit is provided with a pull-down circuit, which is capable of pulling down an analog signal input side of a sample-hold circuit whether an analog signal is inputted or not. The operation circuit is provided with a reference voltage conversion result storing register, which is capable of storing a conversion result of an analog reference voltage inputted periodically separately from a conversion result of the analog signal inputted through the sample-hold circuit. The operation circuit is further provided with a check register, which is capable of writing in and reading out data for checking operation of a signal transfer system including a bus interface through the bus interface. Thus, it is made possible to confirm normality of an external part and an internal part of the AD converter.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: November 9, 2010
    Assignee: Denso Corporation
    Inventors: Hideki Kabune, Nobuhiko Makino, Tomoharu Hayakawa, Hitoshi Ishikawa, Tatsuya Aizawa, Shigeo Uno, Masamitsu Ozeki