Patents by Inventor Takuya Hamada

Takuya Hamada 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: 20180280902
    Abstract: A multi-shaft kneading machine includes a channel and two screws rotatable around first axes of rotation. A pair of gate rods sandwich the two screws and are rotatable around second axes of rotation. Each of the pair of gate rods has two recess parts that form respective spaces through which the two screws penetrate. Each of the pair of gate rods has a first contact surface, which comes into surface contact with a screw when a gate rod is rotated to a minimum degree-of-opening position. Large diameter parts are fitted into the groove of the cylinder, and a small diameter part have a radius of curvature equal to half a distance between two second axes of rotation and smaller than a radius of curvature of the large diameter parts. The small diameter parts of the pair of gate rods are in contact with each other.
    Type: Application
    Filed: March 1, 2016
    Publication date: October 4, 2018
    Inventors: Takuya Hamada, Manabu Ikeya, Makoto Ishikawa, Kazuhiro Kodate, Takayuki Yamazawa, Seiji Takamoto
  • Patent number: 9457576
    Abstract: An inkjet printing apparatus according to the present invention includes a first printing head that performs a first printing operation by discharging ink onto the printing medium, a second printing head positioned downstream from the first printing head in a transport direction and performing a second printing operation by discharging ink onto the printing medium, and a preliminary discharge controller that causes the second printing head to perform a preliminary discharging operation that does not contribute to the second printing operation, wherein the preliminary discharge controller causes an ink discharge amount of the preliminary discharging operation of the second printing head to be smaller when an ink discharge amount of the first printing operation is greater than or equal to a predetermined value than when the ink discharge amount of the first printing operation is less than the predetermined value.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: October 4, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Nobutaka Ukeji, Minoru Teshigawara, Yoshiaki Murayama, Shinichi Yukiura, Takuya Hamada
  • Publication number: 20150314594
    Abstract: An inkjet printing apparatus according to the present invention includes a first printing head that performs a first printing operation by discharging ink onto the printing medium, a second printing head positioned downstream from the first printing head in a transport direction and performing a second printing operation by discharging ink onto the printing medium, and a preliminary discharge controller that causes the second printing head to perform a preliminary discharging operation that does not contribute to the second printing operation, wherein the preliminary discharge controller causes an ink discharge amount of the preliminary discharging operation of the second printing head to be smaller when an ink discharge amount of the first printing operation is greater than or equal to a predetermined value than when the ink discharge amount of the first printing operation is less than the predetermined value.
    Type: Application
    Filed: April 28, 2015
    Publication date: November 5, 2015
    Inventors: Nobutaka Ukeji, Minoru Teshigawara, Yoshiaki Murayama, Shinichi Yukiura, Takuya Hamada
  • Patent number: 9112244
    Abstract: In a battery pack (1),a current loop between the positive and negative electrode plates of an electrode assembly passes points P1, P2, P3, P4, P5, P6, P7, P8, P9, P10, P11, P12, P13 and P14 in this order. A line that connects P2 to P3 intersects a line that connects P11 to P12 in the part where the loop passes a sealing plate (12), which is arranged on the top of a battery unit (10). The loop can be divided into loop parts B1 and B2. The part B1 is formed on the exterior side of the battery unit, and extends from the intersection A through a circuit board (20) back to the intersection A. The part B2 is formed on the interior side of the battery unit relative to the intersection A. The current flows counterclockwise and clockwise in the parts B1 and B2, respectively.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: August 18, 2015
    Assignee: SANYO ELECTRIC CO., LTD.
    Inventors: Daisuke Nishida, Masatsugu Naka, Takuya Hamada, Kazuyuki Kawakami, Hiroki Teraoka, Junpei Ito, Yasuhiro Kaizaki
  • Patent number: 9057264
    Abstract: A screw shaft structure for a twin screw extruder includes a tapered section (20) provided between a ground section (6) and a screw piece inserting section (8), and a tapered ring (21) fitted onto the tapered section (20). The tapered ring (21) serves as a flange section. An object is to reduce the weight of raw material to be used for manufacturing a screw shaft by combining a tapered section and a tapered ring as a structure of a flange section.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: June 16, 2015
    Assignee: THE JAPAN STEEL WORKS, LTD.
    Inventors: Takuya Hamada, Satoru Watada
  • Publication number: 20140251252
    Abstract: A compression self-ignition engine is provided. The engine includes an engine body and an intake passage, and CI combustion is performable in a part of an engine operating range. The intake passage includes a high-temperature passage provided with a heater for heating intake air, a low-temperature passage provided with a cooler for cooling the intake air, a manifold section where the high-temperature and low-temperature passages merge together, and a downstream passage connecting the manifold section with the engine body. A throttle valve for adjusting a flow rate of the intake air is provided in each of the high-temperature and low-temperature passages. At least in an engine operating range where the CI combustion is performed, openings of the throttle valves are controlled to bring a temperature of the intake air within the manifold section into a predetermined temperature range, based on temperature conditions of the heater and the cooler, respectively.
    Type: Application
    Filed: January 9, 2014
    Publication date: September 11, 2014
    Applicant: Mazda Motor Corporation
    Inventors: Mitsunori Wasada, Naoyuki Yamagata, Tomokuni Kusunoki, Takuya Hamada
  • Patent number: 8766732
    Abstract: There is provided a multi-screw chaotic oscillator circuit with simple configuration, that can use various multi-hysteresis VCCS characteristics and generate a variety of multi-screw attractors. The multi-screw chaotic oscillator circuit comprises: a linear two-port VCCS circuit 1 consisting of a set of linear VCCS circuits G1 and G2; a multi-hysteresis two-port VCCS circuit 2 consisting of a set of multi-hysteresis VCCS circuits MH1 and MH2 having multi-hysteresis characteristic; and capacitors C1 and C2 connected to each end of a circuit configured by parallel-connecting the linear two-port VCCS circuit 1 and the multi-hysteresis two-port VCCS circuit 2.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: July 1, 2014
    Assignee: Japan Science and Technology Agency
    Inventors: Yoshihiko Horio, Takuya Hamada, Kenya Jinno, Kazuyuki Aihara
  • Patent number: 8648584
    Abstract: A multi-hysteresis voltage controlled current source system having a variety of multi-hysteresis characteristics is provided. In the multi-hysteresis voltage controlled current source system, single-hysteresis voltage controlled current source circuits 21, 22, . . . 2N as fundamental components are connected in parallel, and a differential input voltage vid is applied to the single-hysteresis voltage controlled current source circuits 21, 22, . . . 2N, so that a plurality of discrete values of current can be output based on the single-hysteresis voltage controlled current source circuits 21, 22, . . . 2N.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: February 11, 2014
    Assignee: Japan Science and Technology Agency
    Inventors: Yoshihiko Horio, Takuya Hamada, Kenya Jinno, Kazuyuki Aihara
  • Publication number: 20140004390
    Abstract: In a battery pack (1), a current loop between the positive and negative electrode plates of an electrode assembly passes points P1, P2, P3, P4, P5, P6, P7, P8, P9, P10, P11, P12, P13 and P14 in this order. A line that connects P2 to P3 intersects a line that connects P11 to P12 in the part where the loop passes a sealing plate (12), which is arranged on the top of a battery unit (10). The loop can be divided into loop parts B1 and B2. The part B1 is formed on the exterior side of the battery unit, and extends from the intersection A through a circuit board (20) back to the intersection A. The part B2 is formed on the interior side of the battery unit relative to the intersection A. The current flows counterclockwise and clockwise in the parts B1 and B2, respectively.
    Type: Application
    Filed: January 17, 2012
    Publication date: January 2, 2014
    Inventors: Daisuke Nishida, Masatsugu Naka, Takuya Hamada, Kazuyuki Kawakami, Hiroki Teraoka, Junpei Ito, Yasuhiro Kaizaki
  • Publication number: 20130251582
    Abstract: An object is to reduce a weight of a raw material to be used for manufacturing a screw shaft by combining a tapered section and a tapered ring as a structure of a flange section. A screw shaft structure for a twin screw extruder includes a tapered section (20) provided between a ground section (6) and a screw piece inserting section (8), and a tapered ring (21) fitted onto the tapered section (20), the tapered ring (21) serving as a flange section.
    Type: Application
    Filed: March 30, 2012
    Publication date: September 26, 2013
    Inventors: Takuya Hamada, Satoru Watada
  • Publication number: 20120019330
    Abstract: There is provided a multi-screw chaotic oscillator circuit with simple configuration, that can use various multi-hysteresis VCCS characteristics and generate a variety of multi-screw attractors. The multi-screw chaotic oscillator circuit comprises: a linear two-port VCCS circuit 1 consisting of a set of linear VCCS circuits G1 and G2; a multi-hysteresis two-port VCCS circuit 2 consisting of a set of multi-hysteresis VCCS circuits MH1 and MH2 having multi-hysteresis characteristic; and capacitors C1 and C2 connected to each end of a circuit configured by parallel-connecting the linear two-port VCCS circuit 1 and the multi-hysteresis two-port VCCS circuit 2.
    Type: Application
    Filed: March 10, 2010
    Publication date: January 26, 2012
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Yoshihiko Horio, Takuya Hamada, Kenya Jinno, Kazuyuki Aihara
  • Publication number: 20110285376
    Abstract: A multi-hysteresis voltage controlled current source system having a variety of multi-hysteresis characteristics is provided. In the multi-hysteresis voltage controlled current source system, single-hysteresis voltage controlled current source circuits 21, 22, . . . 2N as fundamental components are connected in parallel, and a differential input voltage vid is applied to the single-hysteresis voltage controlled current source circuits 21, 22, . . . 2N, so that a plurality of discrete values of current can be output based on the single-hysteresis voltage controlled current source circuits 21, 22, . . . 2N.
    Type: Application
    Filed: February 1, 2010
    Publication date: November 24, 2011
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Yoshihiko Horio, Takuya Hamada, Kenya Jinno, Kazuyuki Aihara
  • Patent number: 7446465
    Abstract: A multi-color luminous fluorescent display device includes therein a vacuum-sealed vessel having a glass substrate, an anode disposed on the glass substrate, a cathode installed in the vacuum-sealed vessel, a first phosphorescent layer containing a phosphor emitting yellow to red light, and a second phosphorescent layer containing a phosphor emitting blue to green light. The first phosphorescent layer contains a Ln2O2S:Eu phosphor (Ln is at least one selected from a group consisting of La, Gd, Lu and Y) which emits yellow to red light, and the second phosphorescent layer contains at least one phosphor selected from ZnO:Zn phosphor, ZnGa2O4 phosphor and ZnGa2O4:Mn phosphor which emit blue to green light.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: November 4, 2008
    Assignee: Futaba Corporation
    Inventors: Hitoshi Toki, Takuya Hamada, Tomohiro Yamada, Masahiro Kato
  • Patent number: 7205711
    Abstract: In a fluorescent display device wherein light is emitted by impinging a low speed electron beam on a phosphor layer formed on an anode, the phosphor layer comprises a compound containing W and/or a compound containing P, K and/or Na. The compound containing P, K and/or Na may be a compound selected from the group consisting of K3PO4, P2O5 and Na2SiO3, the compound being added in an amount of 0.01 to 10.00 wt % to the phosphor layer, to provide a higher luminance residual ratio and a higher high temperature exposure characteristic than those of a convention fluorescent display device.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: April 17, 2007
    Assignee: Futaba Corporation
    Inventors: Takuya Hamada, Masahiro Kato, Tomohiro Yamada, Kazunori Kitagawa, Hitoshi Toki
  • Publication number: 20060006789
    Abstract: A fluorescent display tube is provided, which employs a non-evaporation type getter, instead of the evaporation-type Ba getter, whereby the serviceable life of the fluorescent substance containing SrTiO3 as a base component is prolonged. At least one or more elements selected from the group consisting of Zr, V, Fe, Ti, Ma, Mn, and La are used for the getter for fluorescent display tubes, each which employs a fluorescent substance containing SrTiO3 as a base component. This feature allows carbon series residual gases remaining in the tube to be removed, so that the serviceable operation can be prolonged.
    Type: Application
    Filed: July 8, 2004
    Publication date: January 12, 2006
    Inventors: Shigeo Itoh, Hitoshi Toki, Hirokazu Takanashi, Hisamitsu Takahashi, Yoshitaka Sato, Kazuhiko Itakura, Takuya Hamada, Takao Shiraga, Kiyoshi Tamura, Tatsuo Yamaura
  • Publication number: 20050269938
    Abstract: A multi-color luminous fluorescent display device includes therein a vacuum-sealed vessel having a glass substrate, an anode disposed on the glass substrate, a cathode installed in the vacuum-sealed vessel, a first phosphorescent layer containing a phosphor emitting yellow to red light, and a second phosphorescent layer containing a phosphor emitting blue to green light. The first phosphorescent layer contains a Ln2O2S:Eu phosphor (Ln is at least one selected from a group consisting of La, Gd, Lu and Y) which emits yellow to red light, and the second phosphorescent layer contains at least one phosphor selected from ZnO:Zn phosphor, ZnGa2O4 phosphor and ZnGa2O4:Mn phosphor which emit blue to green light.
    Type: Application
    Filed: June 3, 2005
    Publication date: December 8, 2005
    Applicant: Futaba Corporation
    Inventors: Hitoshi Toki, Takuya Hamada, Tomohiro Yamada, Masahiro Kato
  • Patent number: 6761836
    Abstract: A yellow light emission phosphor usable in a fluorescent display device does not include cadmium and Eu concentration in the yellow light emission phosphor is reduced to a range of about 0.001 mol % to about 0.1 mol %. The phosphor on a fluorescent display driven at a low voltage generates a yellow light emission with an excellent chromaticity and has a good life span characteristic.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: July 13, 2004
    Assignee: Futaba Denshi Kogyo Kabushiki Kaisha
    Inventors: Takuya Hamada, Kazunori Kitagawa, Hitoshi Toki
  • Publication number: 20040113131
    Abstract: A mixture phosphor is provided by mixing a phosphor of a red luminous color devoid of Cd with a phosphor of a green family luminous color also devoid of Cd, wherein a luminous color of the mixture phosphor is a warm color ranging from yellow to orange. And, in the mixture phosphor, S component is removed or less than that of the conventional phosphor of the warm luminous color. Accordingly, a dark streak may not appear or a dark streak appearing time may be delayed, thereby providing a fluorescent display device having an improved display quality.
    Type: Application
    Filed: December 1, 2003
    Publication date: June 17, 2004
    Applicant: Futabu Corporation
    Inventors: Takuya Hamada, Kazuhiko Itakura, Takao Shiraga, Kazunori Kitagawa, Hirokazu Takanashi, Hitoshi Toki
  • Publication number: 20040100181
    Abstract: In a fluorescent display device wherein light is emitted by impinging a low speed electron beam on a phosphor layer formed on an anode, the phosphor layer comprises a compound containing W and/or a compound containing P, K and/or Na. The compound containing P, K and/or Na may be a compound selected from the group consisting of K3PO4, P2O5 and Na2SiO3, the compound being added in an amount of 0.01 to 10.00 wt % to the phosphor layer, to provide a higher luminance residual ratio and a higher high temperature exposure characteristic than those of a convention fluorescent display device.
    Type: Application
    Filed: September 29, 2003
    Publication date: May 27, 2004
    Applicant: Futaba Corporation
    Inventors: Takuya Hamada, Masahiro Kato, Tomohiro Yamada, Kazunori Kitagawa, Hitoshi Toki
  • Patent number: 6690119
    Abstract: A phosphor without using cadmium having excellent luminous characteristic which emits a light in the visible region. The phosphor is prepared by mixing 1% of B2O3 powder and 10% of In2O3 with CaS:Eu, Ce phosphor to prepare a mixture to which is added vehicle containing an organic binder to form paste. The vacuum fluorescent display using the phosphor exhibits lifetime performance and initial luminance superior to the fluorescent display in which a phosphor without using cadmium is applied.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: February 10, 2004
    Assignee: Futaba Corporation
    Inventors: Takuya Hamada, Kazunori Kitagawa, Hitoshi Toki