Patents by Inventor Takayuki Ishikawa

Takayuki 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: 7784367
    Abstract: Gas resistance of an image is evaluated by placing the image in a mixed gas atmosphere containing at least ozone and nitrogen dioxide. The mixed gas atmosphere is controlled such that the concentrations of ozone and nitrogen dioxide are not less than 75 ppb and not less than 150 ppb, respectively, and the mixed gas is continuously supplied to the surface of a sample bearing the image at a flow rate not less than 0.2 m/s and not more than 3.0 m/s.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: August 31, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yojiro Kojima, Hiroyuki Ogino, Takayuki Ishikawa, Takao Yamamoto
  • Patent number: 7775268
    Abstract: A vehicle cooling system comprises a vehicle unit, a heat exchanger, a cooling fan, a coolant pump, a three-way valve, and a control unit. The heat exchanger is arranged in the coolant route to selectively receive a coolant from the coolant outlet of the vehicle unit. The cooling fan is arranged to blow cooling air to the heat exchanger. The coolant pump is arranged to circulate the coolant through the coolant route. The three-way valve is arranged to switch the coolant route between a heat exchanger route that passes through the heat exchanger and a bypass route that bypasses the heat exchanger. The control unit is configured to control operation of at least one of the cooling fan, the three-way valve and the coolant pump based on a temperature of the coolant at the heat exchanger and a temperature of the coolant at the coolant outlet of the vehicle unit.
    Type: Grant
    Filed: January 24, 2006
    Date of Patent: August 17, 2010
    Assignees: Nissan Motor Co., Ltd., Calsonic Kansei Corporation
    Inventors: Yousuke Sato, Takayuki Ishikawa, Mitsuru Iwasaki
  • Patent number: 7737084
    Abstract: The invention provides an image fading preventing agent capable of preventing the discoloration/fading of an image formed and stably retaining its image quality over a long period of time, as well as an image forming element, a recording medium, an image forming method and an image using the agent. The image fading preventing agent is used in a region in which an image is formed by a coloring material, and has a functional group to cause intramolecular proton transfer in its molecule. An image is formed by the image forming element, recording medium or image forming method using the agent.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: June 15, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Ishikawa, Takashi Sawada
  • Patent number: 7707688
    Abstract: A sliding member held by a movable case is interposed between the movable case and a stopper plate. During opening and closing operations, the movable case does not wear because the stopper plate and the sliding member slidably contact.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: May 4, 2010
    Assignee: Panasonic Corporation
    Inventors: Takayuki Ishikawa, Takehiko Konja
  • Patent number: 7652079
    Abstract: The present invention provides a polybutylene terephthalate resin composition which has an excellent vibration welding performance, an excellent resistance to heat shock, and is useful for a case, housing and the like of electric/electronic parts. Specifically, it provides a polybutylene terephthalate resin composition for vibration welding comprising (A) 100 parts by weight of a polybutylene terephthalate resin; (B) 20 to 100 parts by weight of a modified polyester copolymer containing 5 to 30% by mole of a comonomer; (C) 5 to 30 parts by weight of an elastomer selected from an acrylic-based copolymer having a glycidyl group and/or an ?-olefin.?,?-unsaturated carboxylic acid (ester).?,?-unsaturated carboxylic acid glycidylester-based ternary polymer; and (D) 60 to 150 parts by weight of a glass fiber.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: January 26, 2010
    Assignee: Wintech Polymer Ltd.
    Inventors: Katsunori Takayama, Takayuki Ishikawa
  • Patent number: 7615630
    Abstract: Provided is a solubility-controallable compound being soluble in a solvent due to a solvent-philic group thereof, of which solubility in the solvent is irreversibly lowered when the group is removed by retro-Diels-Alder reaction.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: November 10, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Ishikawa, Teigo Sakakibara, Daisuke Miura, Hidemitsu Uno, Noboru Ono
  • Publication number: 20090236223
    Abstract: A gas sensor control system for a gas sensor having a first, a second, and a third cell. The second cell produces a second cell electric current indicating the concentration of oxygen in gas in which the amount of oxygen has already been controlled by the first cell. The third cell produces a third cell electric current indicating the concentration of a preselected component of the gas in which the amount of oxygen has already been controlled by the first cell. A second cell circuit converts the second cell electric current into a voltage as a second cell current-measured value. A current adjuster produces a flow of an adjustment current as a function of the second cell current-measured value so that a third cell circuit converts the third cell electric current minus the adjustment current into a voltage as representing the concentration of the preselected component of the gas.
    Type: Application
    Filed: March 20, 2009
    Publication date: September 24, 2009
    Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.
    Inventors: Satoshi HADA, Takayuki ISHIKAWA, Katsuhide AKIMOTO
  • Publication number: 20090168603
    Abstract: An ultrasonic sensor includes a transmitting device, receiving devices arranged in an array, and a circuit device. One receiving device is configured as a reference receiving device. The circuit device includes a reference signal generator and first and second synchronous detectors. The reference signal generator generates a reference signal by using a received signal of the reference receiving device. The first synchronous detector performs synchronous detection of a received signal of one of the receiving devices based on the reference signal to detect a distance to an object. The second synchronous detector performs synchronous detection of received signals of the receiving devices except the reference receiving device based on the reference signal to detect a direction of the object.
    Type: Application
    Filed: December 23, 2008
    Publication date: July 2, 2009
    Applicants: DENSO CORPORATION, NIPPON SOKEN, INC.
    Inventors: Yasuyuki Okuda, Kiyonari Kojima, Teruo Oda, Akitoshi Yamanaka, Takaaki Kawai, Makiko Sugiura, Takayuki Ishikawa
  • Patent number: 7543357
    Abstract: A folding device is constructed with a holding member mounted rotatably on an end portion of a movable case, which is formed on its periphery with a convex wall portion or a concave groove portion, and which houses a fixed member and a movable member. A holding member provided in the folding device is rotated to fix the movable case in a movable housing of, for example, an electronic apparatus after the movable case is inserted in the movable housing.
    Type: Grant
    Filed: October 18, 2004
    Date of Patent: June 9, 2009
    Assignee: Panasonic Corporation
    Inventors: Takayuki Ishikawa, Koji Sakai, Masaki Nakase
  • Publication number: 20090087708
    Abstract: A fuel cell system according to this invention comprises: a pressurizing valve (2a) provided on a cooling water circulation path; a reservoir tank (5) into which the cooling water flows through a pipe (4) when the pressurizing valve (2a) is open; an air supply pipe (13) that is connected to the reservoir tank (5) to supply air for diluting a fuel gas when the fuel gas accumulates in the reservoir tank (5); and a diluted gas exhaust pipe (15) for discharging the diluted fuel gas from the reservoir tank (5).
    Type: Application
    Filed: April 20, 2007
    Publication date: April 2, 2009
    Inventors: Toshihiro Yamashita, Takayuki Ishikawa, Michiko Morita, Kenichi Goto, Ikuhiro Taniguchi, Kenji Yonekura, Hayato Chikugo
  • Publication number: 20080307843
    Abstract: A nitrification inhibitor and a soil improver and a fertilizer containing the same are offered which can be utilized in a wide area from a tropical to a temperate zone, and can be easily obtained from natural origin materials. It is a nitrification inhibitor to inhibit soil nitrification, containing juglone as a main component. By incorporating this nitrification inhibitor into a soil improver or a fertilizer, nitrification of soil can be effectively inhibited. The nitrification inhibitor is preferably contained in a soil improver or a fertilizer in the range of 20 to 50% weight %.
    Type: Application
    Filed: September 10, 2007
    Publication date: December 18, 2008
    Applicant: JAPAN INTERNATIONAL RESEARCH CENTER FOR AGRICULTURAL SCIENCES
    Inventors: Guntur V. Subbarao, Kazuhiko Nakahara, Takayuki Ishikawa
  • Patent number: 7438168
    Abstract: A cushion plate is provided, for example, between a piston of a hydraulic servo and an adjacent friction plate in a frictional engagement element of an automatic transmission. The cushion plate is deflected by a pressing force of the piston to absorb an engagement shock. The cushion plate includes a main body portion formed into a belleville-spring shape, and a plurality of pawls that extend from the outer periphery of the main body for spline engagement with a member that is splined to, for example, the friction plate. A side wall of each pawl is formed with a curved recess extending circumferentially of the cushion plate and located adjacent the juncture (base) of the pawl at the outer periphery of the main body.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: October 21, 2008
    Assignees: Aisin AW Co., Ltd., Toyota Jidosha Kabushiki Kaisha, NHK Spring Co., Ltd.
    Inventors: Akihiko Kita, Shigeo Tsuzuki, Hiroyuki Nozaki, Yukitoshi Ogawa, Takayuki Ishikawa, Hironobu Imaizumi
  • Publication number: 20080156070
    Abstract: Gas resistance of an image is evaluated by placing the image in a mixed gas atmosphere containing at least ozone and nitrogen dioxide. The mixed gas atmosphere is controlled such that the concentrations of ozone and nitrogen dioxide are not less than 75 ppb and not less than 150 ppb, respectively, and the mixed gas is continuously supplied to the surface of a sample bearing the image at a flow rate not less than 0.2 m/s and not more than 3.0 m/s.
    Type: Application
    Filed: May 31, 2005
    Publication date: July 3, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yojiro Kojima, Hiroyuki Ogino, Takayuki Ishikawa, Takao Yamamoto
  • Publication number: 20080116029
    Abstract: A cushion plate is provided, for example, between a piston of a hydraulic servo and an adjacent friction plate in a frictional engagement element of an automatic transmission. The cushion plate is deflected by a pressing force of the piston to absorb an engagement shock. The cushion plate includes a main body portion formed into a belleville-spring shape, and a plurality of pawls that extend from the outer periphery of the main body for spline engagement with a member that is splined to, for example, the friction plate. A side wall of each pawl is formed with a curved recess extending circumferentially of the cushion plate and located adjacent the juncture (base) of the pawl at the outer periphery of the main body.
    Type: Application
    Filed: January 15, 2008
    Publication date: May 22, 2008
    Applicants: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA, NHK SPRING CO., LTD.
    Inventors: Akihiko Kita, Shigeo Tsuzuki, Hiroyuki Nozaki, Yukitoshi Ogawa, Takayuki Ishikawa
  • Patent number: 7364770
    Abstract: An object of the present invention is to provide coated fine particles with a uniform particle size, having stable crystals on the surface, and to provide colored fine particles which exhibit good color development. A recorded image formed by a dispersion and an ink, using the coated fine particles, is provided with good color development and fastness. The present invention provides coated fine particles comprising fine particles as cores, the fine particles having a crystal layer on the surface, respectively.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: April 29, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akira Nagashima, Minako Kawabe, Takayuki Ishikawa, Sadayuki Sugama
  • Publication number: 20080032442
    Abstract: Provided is a solubility-controllable compound being soluble in a solvent due to a solvent-philic group thereof, of which solubility in the solvent is irreversibly lowered when the group is removed by retro-Diels-Alder reaction.
    Type: Application
    Filed: October 5, 2007
    Publication date: February 7, 2008
    Applicant: Canon Kabushiki Kaisha
    Inventors: Takayuki Ishikawa, Teigo Sakakibara, Daisuke Miura, Hidemitsu Uno, Noboru Ono
  • Patent number: 7315043
    Abstract: A method for forming an organic semiconductor film, comprising applying to a base material a bicyclo compound and inducing a retro-Diels-Alder reaction in the bicyclo compound.
    Type: Grant
    Filed: August 9, 2006
    Date of Patent: January 1, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Ishikawa, Teigo Sakakibara, Daisuke Miura, Hidemitsu Uno, Noboru Ono
  • Publication number: 20070271734
    Abstract: A sliding member held by a movable case is interposed between the movable case and a stopper plate. During opening and closing operations, the movable case does not wear because the stopper plate and the sliding member slidably contact.
    Type: Application
    Filed: February 26, 2007
    Publication date: November 29, 2007
    Inventors: Takayuki Ishikawa, Takehiko Konja
  • Patent number: D578905
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: October 21, 2008
    Assignee: Nihon Dempa Kogyo Co., Ltd.
    Inventors: Shunichi Wakamatsu, Takayuki Ishikawa
  • Patent number: D588477
    Type: Grant
    Filed: December 31, 2007
    Date of Patent: March 17, 2009
    Assignee: Nihon Dempa Kogyo Co., Ltd.
    Inventors: Shunichi Wakamatsu, Shigenori Watanabe, Takayuki Ishikawa