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).
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Patent number: 9093338Abstract: A semiconductor device includes: a first semiconductor chip held on a substrate and including an expanded portion expanding outward from a side surface of a body of the first semiconductor chip; a first wire connecting the expanded portion of the first semiconductor chip to the substrate; and a second wire connecting the body of the first semiconductor chip to the substrate.Type: GrantFiled: December 18, 2013Date of Patent: July 28, 2015Assignee: Panasonic CorporationInventors: Kenji Yokoyama, Takeshi Kawabata
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Publication number: 20150148226Abstract: Aimed at readily and exactly separate 8-hydroxy-2?-deoxyguanosine (8-OHdG) contained in a sample, a column packing material used for separating 8-OHdG, which contains a packing material composed of a material having a straight-chain hydrocarbon group having 6 or more and 30 or less carbon atoms as a functional group, and having a carbon content over the surface of carrier of 18% or less by element ratio, wherein the packing material contains 1 cumulative percent or more and 20 cumulative percent or less, on the particle-count basis, of particles having a circle-equivalent diameter, measured using a flow-type particle image analyzer, of 0.5 ?m or larger and 10 ?m or smaller, is used.Type: ApplicationFiled: January 30, 2015Publication date: May 28, 2015Inventors: Narushi Ito, Jun Kimura, Masayuki Mizushina, Yohei Inaba, Kenji Yokoyama
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Patent number: 8986277Abstract: 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: GrantFiled: July 12, 2013Date of Patent: March 24, 2015Assignee: Terumo Kabushiki KaishaInventor: Kenji Yokoyama
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Patent number: 8968567Abstract: Aimed at readily and exactly separate 8-hydroxy-2?-deoxyguanosine (8-OHdG) contained in a sample, a column packing material used for separating 8-OHdG, which contains a packing material composed of a material having a straight-chain hydrocarbon group having 6 or more and 30 or less carbon atoms as a functional group, and having a carbon content over the surface of carrier of 18% or less by element ratio, wherein the packing material contains 1 cumulative percent or more and 20 cumulative percent or less, on the particle-count basis, of particles having a circle-equivalent diameter, measured using a flow-type particle image analyzer, of 0.5 ?m or larger and 10 ?m or smaller, is used.Type: GrantFiled: February 18, 2009Date of Patent: March 3, 2015Assignees: Tanita Corporation, National Institute of Advanced Industrial Science and TechnologyInventors: Narushi Ito, Jun Kimura, Masayuki Mizushina, Yohei Inaba, Kenji Yokoyama
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Publication number: 20150027886Abstract: Provided is a technique capable of suppressing reduction of a mediator in a stored state. A reagent layer (an enzyme layer 106b, a mediator layer 106c) stacked separately on a hydrophilic layer 106a containing a hydrophilic polymer having a double bond of oxygen atoms contains an enzyme, a mediator, and a hydrophilic polymer having no double bond of oxygen atoms. Accordingly, since the mediator is surrounded by the hydrophilic polymer having no double bond of oxygen atoms, the mediator contained in mediator layer 106c can be prevented from coming into contact with CMC as the hydrophilic polymer in hydrophilic layer 106a, and reduction of the mediator by the hydrophilic polymer having a double bond of oxygen atoms in hydrophilic layer 106a can be suppressed, in the stored state.Type: ApplicationFiled: September 11, 2014Publication date: January 29, 2015Inventors: Jun Takagi, Hideaki Ooe, Kenji Yokoyama, Atsunori Hiratsuka, Noriko Sasaki
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Publication number: 20150005698Abstract: An applicator is insertable into a living body to apply mixed solution to a region in the living body. The applicator includes a nozzle including an elongated nozzle main body to which gas and a plurality of kinds of liquids are supplied and a nozzle head at a distal end of the nozzle main body to jet mixed solution of the gas and the plurality of kinds of liquids supplied to the nozzle main body. The nozzle main body is positioned in a sheath for relative axial movement. A gap exists between the nozzle main body and the sheath to exhaust gas in the living body to the outside of the body when the pressure in the living body rises. The sheath has a plurality of side holes, each of which communicates with the gap.Type: ApplicationFiled: September 15, 2014Publication date: January 1, 2015Applicant: TERUMO KABUSHIKI KAISHAInventor: Kenji YOKOYAMA
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Publication number: 20140373347Abstract: Provided is a technique capable of easily manufacturing a biosensor in which each of an enzyme layer and a mediator layer contains a hydrophilic polymer having no double bond of oxygen atoms and thereby which can be stored for a long period. Since an enzyme layer and a mediator layer are formed together as a reaction layer, there is no need to individually form enzyme layer and mediator layer on a cover layer and an electrode layer, respectively, as in a conventional biosensor, and reaction layer can be easily formed. Since each of enzyme layer and mediator layer contains the hydrophilic polymer having no double bond of oxygen atoms, a reaction between an enzyme and a mediator can be suppressed, and reduction of the mediator in mediator layer can be suppressed, in a stored state. Therefore, a biosensor which can be stored for a long period can be easily manufactured.Type: ApplicationFiled: September 11, 2014Publication date: December 25, 2014Inventors: Jun Takagi, Hideaki Ooe, Kenji Yokoyama, Atsunori Hiratsuka, Noriko Sasaki
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Patent number: 8890335Abstract: A semiconductor device includes: on an upper surface of a second semiconductor chip on a circuit board, a ring dam section formed at an outer circumference of a mounting region above which a first semiconductor chip is mounted; and an interconnect extending from the dam section to a center section of the first semiconductor chip or the second semiconductor chip in a region in which the first semiconductor chip faces the second semiconductor chip. The interconnect is electrically connected to a connection terminal on a circuit formation surface of the first or second semiconductor chip at the center section of the first or second semiconductor chip. The dam section and the interconnect are power supply interconnects or ground interconnects.Type: GrantFiled: December 18, 2013Date of Patent: November 18, 2014Assignee: Panasonic CorporationInventors: Kenji Yokoyama, Takeshi Kawabata
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Publication number: 20140246335Abstract: A technique and a sensor chip allowing determination of a hematocrit value of a blood sample in a short period of time with low cost are provided. A response current obtained by sweep of a voltage applied across a working electrode for determination and a counter electrode for determination included in a sensor chip is measured and a hematocrit value is derived based on followability of the response current to temporal change in swept applied voltage. Therefore, it is not necessary to stand by until oxidation reduction reaction of an oxidation reducing substance is stabilized for determining a hematocrit value as in a conventional method of determining a hematocrit value, and thus a hematocrit value of a blood sample can be determined in a short period of time. Since no oxidation reducing substance is necessary for determining a hematocrit value, a hematocrit value can be determined with low cost.Type: ApplicationFiled: May 15, 2014Publication date: September 4, 2014Applicant: Murata Manufacturing Co., Ltd.Inventors: Hideaki OOE, Jun TAKAGI, Kenji YOKOYAMA, Atsunori HIRATSUKA, Nobuyuki YOSHIDA, Noriko SASAKI
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Publication number: 20140246336Abstract: A technique allowing improved determination accuracy in quantifying a substance to be determined by lessening influence by a current component different from an oxidation current is provided. The oxidation current results from oxidation of a reducing substance generated through reaction between an enzyme and the substance to be determined. Current components are contained in a response current resulting from application of a determination potential, referenced to a counter electrode, to a working electrode. Since a conditioning potential higher than a determination potential is applied as a pulse to the working electrode, influence by a current component different from an oxidation current can be lessened. Thus, the response current can be measured in a stable manner and determination accuracy in quantification of a substance to be determined which is contained in a specimen can be improved.Type: ApplicationFiled: May 15, 2014Publication date: September 4, 2014Applicant: Murata Manufacturing Co., Ltd.Inventors: Hideaki OOE, Jun TAKAGI, Kenji YOKOYAMA, Atsunori HIRATSUKA, Nobuyuki YOSHIDA, Noriko SASAKI
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Patent number: 8759941Abstract: 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: GrantFiled: September 14, 2012Date of Patent: June 24, 2014Assignee: Panasonic CorporationInventor: Kenji Yokoyama
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Patent number: 8702950Abstract: 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: GrantFiled: September 10, 2012Date of Patent: April 22, 2014Assignees: Sharp Kabushiki Kaisha, Toppan Printing Co., Ltd.Inventors: Yuji Maruo, Yutaka Unuma, Atsunori Hiratsuka, Hideki Kinoshita, Kenji Yokoyama, Koji Sakairi, Satonari Akutsu
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Publication number: 20140103544Abstract: A semiconductor device includes an extended semiconductor chip including a first semiconductor chip and an extension outwardly extending from a side surface of the first semiconductor chip; and a second semiconductor chip connected to the extended semiconductor chip through a plurality of bumps and electrically connected to the first semiconductor chip. The first semiconductor chip is smaller than the second semiconductor chip. At least one external terminal is provided on the extension.Type: ApplicationFiled: December 26, 2013Publication date: April 17, 2014Applicant: Panasonic CorporationInventors: KENJI YOKOYAMA, TAKESHI KAWABATA, KIYOMI HAGIHARA
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Publication number: 20140103502Abstract: A semiconductor device includes: a first semiconductor chip held on a substrate and including an expanded portion expanding outward from a side surface of a body of the first semiconductor chip; a first wire connecting the expanded portion of the first semiconductor chip to the substrate; and a second wire connecting the body of the first semiconductor chip to the substrate.Type: ApplicationFiled: December 18, 2013Publication date: April 17, 2014Applicant: Panasonic CorporationInventors: Kenji Yokoyama, Takeshi Kawabata
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Publication number: 20140103536Abstract: A semiconductor device includes: on an upper surface of a second semiconductor chip on a circuit board, a ring dam section formed at an outer circumference of a mounting region above which a first semiconductor chip is mounted; and an interconnect extending from the dam section to a center section of the first semiconductor chip or the second semiconductor chip in a region in which the first semiconductor chip faces the second semiconductor chip. The interconnect is electrically connected to a connection terminal on a circuit formation surface of the first or second semiconductor chip at the center section of the first or second semiconductor chip. The dam section and the interconnect are power supply interconnects or ground interconnects.Type: ApplicationFiled: December 18, 2013Publication date: April 17, 2014Applicant: Panasonic CorporationInventors: Kenji Yokoyama, Takeshi Kawabata
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Publication number: 20140103504Abstract: A first chip including electrodes is mounted above an expanded semiconductor chip formed by providing an expanded portion at an outer edge of a second chip including chips. The electrodes of the first chip are electrically connected to the electrodes of the second chip by conductive members. A re-distribution structure is formed from a top of the first chip outside a region for disposing the conductive members along a top of the expanded portion. Connection terminals are provided above the expanded portion, and electrically connected to ones of the electrodes of the first chip via the re-distribution structure.Type: ApplicationFiled: December 27, 2013Publication date: April 17, 2014Applicant: Panasonic CorporationInventors: HIROKI YAMASHITA, TAKASHI YUI, TAKESHI KAWABATA, KIYOMI HAGIHARA, KENJI YOKOYAMA
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Patent number: 8692047Abstract: 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: GrantFiled: February 2, 2012Date of Patent: April 8, 2014Assignees: Tanita Corporation, National Institute of Advanced Industrial Science and TechnologyInventors: Satoshi Koide, Kenji Yokoyama, Yoshio Suzuki
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Patent number: 8652850Abstract: 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: GrantFiled: February 2, 2012Date of Patent: February 18, 2014Assignees: Tanita Corporation, National Institute of Advanced Industrial Science and TechnologyInventors: Satoshi Koide, Kenji Yokoyama, Yoshio Suzuki
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Publication number: 20130331658Abstract: A sprayer includes: a sprayer body; a nozzle extending from the sprayer body; and an irradiation unit disposed on a leading end of the nozzle and emitting light that is oriented and diffuses in a leading end direction of the nozzle. The nozzle includes: an elongated nozzle body extending from the sprayer body and having a curved portion on a leading end side; and a nozzle head disposed on a leading end of the nozzle body. The irradiation unit is arranged inside a curve shape of the curved portion.Type: ApplicationFiled: August 14, 2013Publication date: December 12, 2013Applicant: TERUMO KABUSHIKI KAISHAInventors: Miho KAI, Kenji Yokoyama
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Publication number: 20130296822Abstract: 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: ApplicationFiled: July 12, 2013Publication date: November 7, 2013Applicant: TERUMO KABUSHIKI KAISHAInventor: Kenji Yokoyama