Patents by Inventor Kenji Yokoyama

Kenji Yokoyama 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: 8520234
    Abstract: Disclosed herein is a communication system for enabling a first communication apparatus and second communication apparatuses to communicate with one another over a network. The first communication apparatus includes: a detection device; a display control device; a transmission device. The second communication apparatuses includes: a reception device; a notification device; an instruction device; and a registration device.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: August 27, 2013
    Assignee: Sony Corporation
    Inventors: Yomei Otani, Yoshihiro Toyama, Kenji Yokoyama, Zhongyao Sheng, Hiroshi Oryoji, Masashige Hagimori, Ikuya Sano
  • Patent number: 8512308
    Abstract: A connector is configured to be connected to a syringe assembly provided with at least one syringe having an outer cylinder with a protruding tube-shaped port, and a holder which holds the syringe. The connector includes a connector main body mountable on a container containing a medical solution; a tube-shaped fitting section protruding from the upper section of the connector main body for receiving the syringe to connect the inside of the syringe and the inside of the container when the syringe port is fitted in the fitting section; and fixing means having a lock mechanism that fixes the syringe assembly to the connector main body when the syringe port is fitted in the fitting section, an operating section to release the fixed state provided by the lock mechanism, and a push-out section that pushes out the syringe assembly when the fixing releasing operation is performed.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: August 20, 2013
    Assignee: Terumo Kabushiki Kaisha
    Inventor: Kenji Yokoyama
  • Patent number: 8500981
    Abstract: An electrophoresis apparatus includes a sample separating section for containing a sample separating medium for separating a sample in a horizontal direction, the sample separating section containing the sample separating medium in such a manner that the sample separating medium has an exposed portion at least one end of a surface of the sample separating medium, the surface being in parallel with the horizontal direction; and medium connecting means for connecting a sample containing medium to the sample separating medium at a connecting region, the sample containing medium containing a sample, and the connecting region satisfying a particular equation. By this, an electrophoresis technique with better accuracy than conventional arts can be provided.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: August 6, 2013
    Assignees: Toppan Printing Co., Ltd., Sharp Kabushiki Kaisha
    Inventors: Koji Sakairi, Satonari Akutsu, Yuji Maruo, Takateru Matsunaga, Yutaka Unuma, Atsunori Hiratsuka, Hideki Kinoshita, Nao Sakaguchi, Kenji Yokoyama
  • Patent number: 8456025
    Abstract: A semiconductor integrated circuit device includes a semiconductor chip including input/output cells, pads formed on a surface of the semiconductor chip, and interconnects formed on the surface of the semiconductor chip to electrically connect at least some of the plurality of input/output cells and at least some of the plurality of pads. A first plurality of the pads located in a center portion of the semiconductor chip are arranged in a rectangular dot grid pattern, and a second plurality of the pads located in at least one of four corner portions of the semiconductor chip are arranged in a staggered dot pattern.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: June 4, 2013
    Assignee: Panasonic Corporation
    Inventor: Kenji Yokoyama
  • Patent number: 8449748
    Abstract: A sample separation/adsorption appliance (100) according to one embodiment of the present invention includes: a first buffer solution tank (103) equipped with a first electrode (101) and used for holding a first buffer solution; a second buffer solution tank (104) equipped with a second electrode (102) and used for holding a second buffer solution; a sample separation section (110) that holds a sample separation medium (131) for separating a sample; and a conductive section (120) that holds a conductive medium (133), wherein: the sample separation medium (131) and the conductive medium (133) are in contact with the sample adsorption member (132), respectively, on the opposite sides thereof; an end of the sample separation medium (131) opposite to an end being in contact with the sample adsorption member (132) is connected to an inside of the first buffer solution tank (103); and an end of the conductive medium (133) opposite to an end being in contact with the sample adsorption member (132) is connected to an
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: May 28, 2013
    Assignees: Sharp Kabushiki Kaisha, National Institute of Advanced Industrial Science and Technology
    Inventors: Uichi Midorikawa, Takateru Matsunaga, Yuji Maruo, Yutaka Unuma, Atsunori Hiratsuka, Hideki Kinoshita, Kenji Yokoyama
  • Publication number: 20130105935
    Abstract: The layout of an LSI is previously designed so that cells below pads which will be affected by stress are arranged so that the occurrence of a malfunction of the LSI which will be caused by the influence of stress is reduced or prevented. In addition to or instead of the cell arrangement, the arrangement of pads, bumps or the like may be adjusted.
    Type: Application
    Filed: September 14, 2012
    Publication date: May 2, 2013
    Inventor: Kenji YOKOYAMA
  • Patent number: 8419916
    Abstract: A biological molecule separation apparatus for separating a biological molecule of one embodiment of the present invention has a buffer solution chamber receiving a buffer solution, a separation electrode arranged in the buffer solution chamber, a biological molecule separation medium for separating a biological molecule, a biological molecule adsorption film for adsorbing a biological molecule, a pair of transfer electrodes having a plurality of line shaped conductors extending in a direction perpendicular to a first direction, the conductors being arranged in the direction perpendicular to the first direction, and a separation part which holds the transfer electrode, the biological molecule adsorption film, the medium and the transfer electrode, wherein the transfer electrode, the biological molecule adsorption film, the medium and the transfer electrode are stacked in this order.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: April 16, 2013
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Koji Sakairi, Satonari Akutsu, Atsunori Hiratsuka, Kenji Yokoyama, Yuji Maruo, Hiroshi Ohki
  • Patent number: 8409712
    Abstract: An alloy to be surface-coated, which can keep excellent hardness of 58HRC or above even when the amount of an alloying element added is reduced or even when the alloy is heated to a temperature of as high as 400 to 500° C.; and sliding members produced by forming a hard film on the surface of the alloy. An alloy to be surface-coated, the surface of which is to be covered with a hard film, which alloy contains by mass C: 0.5 to 1.2%, Si: 2.0% or below, Mn: 1.0% or below, Cr: 5.0 to 14.0%, Mo+1/2 W: 0.5 to 5.0%, and N: more than 0.015 to 0.1% with the balance being Fe and impurities, preferably such an alloy which contains by mass C: 0.6 to 0.85%, Si: 0.1 to 1.5%, Mn: 0.2 to 0.8%, Cr: 7.0 to 11.0%, Mo+1/2 W: 1.0 to 4.0%, and N: 0.04 to 0.08%.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: April 2, 2013
    Assignee: Hitachi Metals Ltd.
    Inventors: Kenji Yokoyama, Kunichika Kubota, Toshihiro Uehara, Takehiro Ohno, Katsuhiko Ohishi
  • Publication number: 20130015069
    Abstract: A device for electrophoresis applies a voltage to a medium in contact with a plurality of electric conductors so that a potential of adjacent conductors is within a certain range. This allows preventing decline in electrophoresis speed. A device for electrophoresis and transfer includes an electrode having a plurality of electrode regions being insulated one another and arranged in a specific direction. This allows providing a practical and easy-to-use device for electrophoresis and transfer. A device for transfer alters an applied voltage or applied voltage duration to a certain position to another position. This allows improving transfer efficiency.
    Type: Application
    Filed: September 10, 2012
    Publication date: January 17, 2013
    Applicant: Sharp Kabushiki Kaisha and Toppan Printing Co., Ltd.
    Inventors: Yuji MARUO, Yutaka Unuma, Atsunori Hiratsuka, Hideki Kinoshita, Kenji Yokoyama, Koji Sakairi, Satonari Akutsu
  • Publication number: 20120306879
    Abstract: An apparatus includes a display control unit configured to control a display unit to display content including a plurality of images and an adjustment bar having a slider that controls a current image of the content displayed on the display unit. The slider is moved by a first operation and a second operation. The second operation changes a position of the slider with a finer adjustment than the first operation.
    Type: Application
    Filed: May 24, 2012
    Publication date: December 6, 2012
    Applicant: SONY CORPORATION
    Inventor: Kenji YOKOYAMA
  • Patent number: 8325440
    Abstract: A magnetic head incorporates: a medium facing surface; a coil; a pole layer; first and second shields disposed to sandwich the pole layer therebetween; a first gap layer disposed between the first shield and the pole layer; a second gap layer disposed between the second shield and the pole layer; and a substrate. The first shield is located closer to the substrate than the second shield. The magnetic head further incorporates an antireflection film disposed between the first shield and the first gap layer or between the first gap layer and the pole layer. The pole layer is formed by frame plating.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: December 4, 2012
    Assignees: TDK Corporation, Sae Magnetics (H.K.) Ltd.
    Inventors: Tatsuya Harada, Koichi Otani, Hidetaka Kawano, Kenji Yokoyama, Naoto Matono
  • Patent number: 8263791
    Abstract: A convenient, rapid, and highly sensitive protein detection method is provided. According to the present invention, an easily water-soluble compound of formula I is provided: [wherein, R1 and R2 are same or different, each of which is an aryl or heteroaryl group substituted with one or more anionic substituents].
    Type: Grant
    Filed: June 26, 2009
    Date of Patent: September 11, 2012
    Assignees: National Institute of Advanced Industrial Science and Technology, Kanto Kagaku Kabushiki Kaisha
    Inventors: Yoshio Suzuki, Kenji Yokoyama, Nobuyuki Takagi, Tomoyuki Chimuro, Atsushi Shinohara
  • Publication number: 20120220040
    Abstract: A method of quantitatively determining 8-isoprostane is provided that includes fluorescently labeling 8-isoprostane with a quinoxalinone derivative in an excess amount relative to 8-isoprostane, separating a fluorescently labeled 8-isoprostane from a unreacted quinoxalinone derivative by contacting a reaction mixture containing the fluorescently labeled 8-isoprostane and the unreacted quinoxalinone derivative with a cation exchange support having a sulfonic acid or a sulfonate immobilized thereon, and quantitatively determining the fluorescently labeled 8-isoprostane that has been separated from the unreacted quinoxalinone derivative.
    Type: Application
    Filed: February 2, 2012
    Publication date: August 30, 2012
    Applicants: National Institute of Advanced Industrial Science and Technology, Tanita Corporation
    Inventors: Satoshi KOIDE, Kenji YOKOYAMA, Yoshio SUZUKI
  • Publication number: 20120220050
    Abstract: A method of purifying 8-isoprostane is provided that includes a step of contacting a liquid sample containing 8-isoprostane with an ion exchange support having a quaternary ammonium salt immobilized thereon such that 8-isoprostane in the liquid sample is retained on the ion exchange support and a step of eluting 8-isoprostane from the ion exchange support using a first eluent containing a water-soluble organic solvent and water as main components.
    Type: Application
    Filed: February 2, 2012
    Publication date: August 30, 2012
    Applicants: National Institute of Advanced Industrial Science and Technology, Tanita Corporation
    Inventors: Satoshi Koide, Kenji Yokoyama, Yoshio Suzuki
  • Publication number: 20120199969
    Abstract: A semiconductor device has a semiconductor chip mounted on a circuit board. The semiconductor chip includes: a semiconductor substrate; a first pad formed on the semiconductor substrate; a second pad formed on the first pad via an interlayer insulating film; a via formed through the interlayer insulating film for connecting the first pad with the second pad; a protection film that is formed on the second pad and has an opening exposing a center portion of the second pad; and a barrier metal layer formed on the portion of the second pad exposed from the opening of the protection film and on a portion of the protection film surrounding the opening. The diameter of the via is smaller than the diameter of the opening of the protection film, and the center of the via corresponds with the center of the barrier metal layer.
    Type: Application
    Filed: January 24, 2012
    Publication date: August 9, 2012
    Inventor: Kenji Yokoyama
  • Publication number: 20120190321
    Abstract: A nonmagnetic stainless steel which has a higher electrical resistivity than existing nonmagnetic alloys, a production process for producing the stainless steel, and a radio wave receiver. The receiver has a main case and rear cover constituted of a nonmagnetic stainless steel having an electrical resistivity as high as more than 100 ??·cm and consisting of C: not more than 0.1%, Si: 4.0-7.5%, Mn: not more than 2.0%, Ni: 25.5-30.0%, Cr: 15.0-20.0%, Mo: 0.1-3.0%, Cu: 0-2.0%, in mass % and the balance Fe and impurities. Even if some variable magnetic flux generated by a coil of an antenna runs through the main case and the rear cover, the receiving efficiency of the antenna can be prevented from being reduced by eddy current loss and a sufficient radio receiving sensitivity can be obtained. This nonmagnetic stainless steel is produced by hot and/or cold plastic working and subsequent solution treating conducted at 1,000-1,180° C.
    Type: Application
    Filed: July 29, 2010
    Publication date: July 26, 2012
    Applicants: HITACHI METALS, LTD., CASIO COMPUTER CO., LTD.
    Inventors: Junichi Sato, Toshihiro Uehara, Kenji Yokoyama
  • Publication number: 20120172830
    Abstract: A mixing apparatus for mixing a first component and a second component comprises: a first vessel which has a negative internal pressure and houses the first component; a second vessel which houses the second component; and a double-ended needle which allows communication between the first vessel and the second vessel when a first stopper element and a second stopper element have been pierced through by the needle. Penetration-resistance increasing parts which have a greater penetration resistance with respect to the first stopper element and the second stopper element than tip end tubes are respectively provided on a first puncture needle and a second puncture needle of the double-ended needle at positions further towards the base end than the tip end tubes. The axial heights of the edge faces of the tip end tubes are both less than the thicknesses of the first stopper element and of the second stopper element.
    Type: Application
    Filed: September 8, 2010
    Publication date: July 5, 2012
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventors: Kenji Yokoyama, Akira Sawada
  • Publication number: 20120114964
    Abstract: Provided is a coated-surface sliding part having excellent adhesion of a hard coating, and a method for producing the same part. The coated-surface sliding part is a sliding part wherein a hard coating is formed by physical deposition on the surface of a base material formed from, by mass percent, C 0.5 to 0.8%, Si 0.1 to 1.5%, Mn 0.2 to 1.0%, Cr 8.0 to 13.5%, Mo and/or W 0.5 to 4.0% in terms of (Mo+ 1/2 W), and N 0.01 to 0.1%, with the remainder being Fe and impurities. The physically deposited coating is a titanium metal coating further covered by a diamond-like carbon coating. The method for producing a coated-surface part involves sputtering in order to apply the physically deposited coating, which consists of the titanium metal coating and then the diamond-like carbon coating which forms the surface layer, to the surface of the base material having the aforementioned composition. The base material is preferably subjected to argon gas bombardment prior to application of the physically deposited coating.
    Type: Application
    Filed: July 13, 2010
    Publication date: May 10, 2012
    Applicants: HITACHI METALS, LTD., HITACHI TOOL ENGINEERING, LTD.
    Inventors: Fumiaki Honda, Kenji Yokoyama, Kenichi Inoue, Kunichika Kubota, Toshihiro Uehara, Takehiro Ohno, Katsuhiko Ohishi
  • Publication number: 20110309515
    Abstract: A semiconductor integrated circuit device includes a semiconductor chip including input/output cells, pads formed on a surface of the semiconductor chip, and interconnects formed on the surface of the semiconductor chip to electrically connect at least some of the plurality of input/output cells and at least some of the plurality of pads. A first plurality of the pads located in a center portion of the semiconductor chip are arranged in a rectangular dot grid pattern, and a second plurality of the pads located in at least one of four corner portions of the semiconductor chip are arranged in a staggered dot pattern.
    Type: Application
    Filed: August 30, 2011
    Publication date: December 22, 2011
    Applicant: PANASONIC CORPORATION
    Inventor: KENJI YOKOYAMA
  • Patent number: 8080167
    Abstract: The present invention relates to a shaping method of a thin film layer and a manufacturing method of a perpendicular recording magnetic head using the same. In the thin film layer shaping method according to the present invention, since a second thin film of a lower etching rate is etched by a preliminary etching amount allowing for a difference between the etching rate of the second thin film and an etching rate of a first thin film in side-by-side relationship with each other, both the first and second thin films can be etched by the same etching amount through a subsequent etching step, so that the thin film layer can be shaped into a given shape. Thus, the surface of the thin film layer can be planarized.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: December 20, 2011
    Assignee: TDK Corporation
    Inventors: Hisayoshi Watanabe, Toshiomi Yokoyama, Nobuyuki Mori, Akihiro Kaneko, Michitaka Nishiyama, Kenji Yokoyama