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).
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Publication number: 20180280902Abstract: 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: ApplicationFiled: March 1, 2016Publication date: October 4, 2018Inventors: Takuya Hamada, Manabu Ikeya, Makoto Ishikawa, Kazuhiro Kodate, Takayuki Yamazawa, Seiji Takamoto
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Patent number: 9457576Abstract: 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: GrantFiled: April 28, 2015Date of Patent: October 4, 2016Assignee: Canon Kabushiki KaishaInventors: Nobutaka Ukeji, Minoru Teshigawara, Yoshiaki Murayama, Shinichi Yukiura, Takuya Hamada
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Publication number: 20150314594Abstract: 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: ApplicationFiled: April 28, 2015Publication date: November 5, 2015Inventors: Nobutaka Ukeji, Minoru Teshigawara, Yoshiaki Murayama, Shinichi Yukiura, Takuya Hamada
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Patent number: 9112244Abstract: 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: GrantFiled: January 17, 2012Date of Patent: August 18, 2015Assignee: SANYO ELECTRIC CO., LTD.Inventors: Daisuke Nishida, Masatsugu Naka, Takuya Hamada, Kazuyuki Kawakami, Hiroki Teraoka, Junpei Ito, Yasuhiro Kaizaki
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Patent number: 9057264Abstract: 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: GrantFiled: March 30, 2012Date of Patent: June 16, 2015Assignee: THE JAPAN STEEL WORKS, LTD.Inventors: Takuya Hamada, Satoru Watada
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Publication number: 20140251252Abstract: 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: ApplicationFiled: January 9, 2014Publication date: September 11, 2014Applicant: Mazda Motor CorporationInventors: Mitsunori Wasada, Naoyuki Yamagata, Tomokuni Kusunoki, Takuya Hamada
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Patent number: 8766732Abstract: 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: GrantFiled: March 10, 2010Date of Patent: July 1, 2014Assignee: Japan Science and Technology AgencyInventors: Yoshihiko Horio, Takuya Hamada, Kenya Jinno, Kazuyuki Aihara
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Patent number: 8648584Abstract: 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: GrantFiled: February 1, 2010Date of Patent: February 11, 2014Assignee: Japan Science and Technology AgencyInventors: Yoshihiko Horio, Takuya Hamada, Kenya Jinno, Kazuyuki Aihara
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Publication number: 20140004390Abstract: 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: ApplicationFiled: January 17, 2012Publication date: January 2, 2014Inventors: Daisuke Nishida, Masatsugu Naka, Takuya Hamada, Kazuyuki Kawakami, Hiroki Teraoka, Junpei Ito, Yasuhiro Kaizaki
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Publication number: 20130251582Abstract: 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: ApplicationFiled: March 30, 2012Publication date: September 26, 2013Inventors: Takuya Hamada, Satoru Watada
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Publication number: 20120019330Abstract: 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: ApplicationFiled: March 10, 2010Publication date: January 26, 2012Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCYInventors: Yoshihiko Horio, Takuya Hamada, Kenya Jinno, Kazuyuki Aihara
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Publication number: 20110285376Abstract: 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: ApplicationFiled: February 1, 2010Publication date: November 24, 2011Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCYInventors: Yoshihiko Horio, Takuya Hamada, Kenya Jinno, Kazuyuki Aihara
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Patent number: 7446465Abstract: 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: GrantFiled: June 3, 2005Date of Patent: November 4, 2008Assignee: Futaba CorporationInventors: Hitoshi Toki, Takuya Hamada, Tomohiro Yamada, Masahiro Kato
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Patent number: 7205711Abstract: 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: GrantFiled: September 29, 2003Date of Patent: April 17, 2007Assignee: Futaba CorporationInventors: Takuya Hamada, Masahiro Kato, Tomohiro Yamada, Kazunori Kitagawa, Hitoshi Toki
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Publication number: 20060006789Abstract: 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: ApplicationFiled: July 8, 2004Publication date: January 12, 2006Inventors: Shigeo Itoh, Hitoshi Toki, Hirokazu Takanashi, Hisamitsu Takahashi, Yoshitaka Sato, Kazuhiko Itakura, Takuya Hamada, Takao Shiraga, Kiyoshi Tamura, Tatsuo Yamaura
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Publication number: 20050269938Abstract: 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: ApplicationFiled: June 3, 2005Publication date: December 8, 2005Applicant: Futaba CorporationInventors: Hitoshi Toki, Takuya Hamada, Tomohiro Yamada, Masahiro Kato
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Patent number: 6761836Abstract: 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: GrantFiled: September 18, 2001Date of Patent: July 13, 2004Assignee: Futaba Denshi Kogyo Kabushiki KaishaInventors: Takuya Hamada, Kazunori Kitagawa, Hitoshi Toki
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Publication number: 20040113131Abstract: 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: ApplicationFiled: December 1, 2003Publication date: June 17, 2004Applicant: Futabu CorporationInventors: Takuya Hamada, Kazuhiko Itakura, Takao Shiraga, Kazunori Kitagawa, Hirokazu Takanashi, Hitoshi Toki
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Publication number: 20040100181Abstract: 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: ApplicationFiled: September 29, 2003Publication date: May 27, 2004Applicant: Futaba CorporationInventors: Takuya Hamada, Masahiro Kato, Tomohiro Yamada, Kazunori Kitagawa, Hitoshi Toki
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Patent number: 6690119Abstract: 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: GrantFiled: August 28, 2002Date of Patent: February 10, 2004Assignee: Futaba CorporationInventors: Takuya Hamada, Kazunori Kitagawa, Hitoshi Toki