Patents by Inventor Takeo Yamaguchi

Takeo Yamaguchi 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: 10233110
    Abstract: A material set for manufacturing a glass object includes a powder material including glass and a first water soluble resin; and a liquid material including water and a second water soluble resin having a mass average molecular weight of less than 50,000.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: March 19, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Takeo Yamaguchi, Hitoshi Iwatsuki, Kazumi Ohtaki, Takuya Saito, Teruki Kusahara
  • Patent number: 10226918
    Abstract: Provided is a three-dimensional object formation powder material used for three-dimensional object formation of forming a three-dimensional object by stacking up a plurality of powder material layers each bound by a resin and having a predetermined shape. The three-dimensional object formation powder material contains particles in which a plurality of cores are fixed by a water-soluble resin.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: March 12, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshihiro Norikane, Yasutada Shitara, Teruki Kusahara, Takuya Saito, Takeo Yamaguchi
  • Publication number: 20180330903
    Abstract: A passive thermal switch device, for regulating a temperature of a thermal component configured to generate heat, includes a first plate and a second plate. The first plate is provided on the thermal component. The first plate includes a thermal switch material that switches from an antiferromagnetic state to a ferromagnetic state upon exceeding a state transition temperature. The second plate includes a permanent magnet. The second plate is moveable between a thermal insulator position and a thermal conductor position based on a temperature of the thermal switch material. In the thermal insulator position, the second plate is spaced apart from the first plate. In the thermal conductor position, the second plate is in contact with the first plate.
    Type: Application
    Filed: May 10, 2017
    Publication date: November 15, 2018
    Inventors: Takeo Yamaguchi, Gaohua Zhu
  • Patent number: 9799894
    Abstract: Provided is a catalyst layer for gas diffusion electrode that can be used without using carbon supports, a method for manufacturing the same, a membrane electrode assembly, and a fuel cell. The catalyst layer for gas diffusion electrode according to the present invention includes a network-like metallic catalyst formed of a sintered body, the network-like metallic catalyst including nanoparticles linked with each other to have electron conductivity; and an ion conductor, at least a part of the ion conductor contacting the network-like metallic catalyst. Further, the membrane electrode assembly according to the present invention includes a polymer electrolyte membrane provided between an anode catalyst layer and a cathode catalyst layer, and the catalyst layer for gas diffusion electrode stated above is used in at least one of the anode catalyst layer and the cathode catalyst layer.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: October 24, 2017
    Assignee: Kanagawa Institute of Industrial Science and Technology
    Inventors: Takeo Yamaguchi, Shun Ogura, Takanori Tamaki, Teruaki Fuchigami, Yoshitaka Kitamoto, Hidenori Kuroki
  • Publication number: 20170292470
    Abstract: An internal combustion engine comprising: a combustion chamber surrounded by at least an inner wall of a cylinder bore, a cylinder head, a valve and a piston, and a coating layer arranged on at least part of the inner wall of the combustion chamber, wherein the thermal conductivity of the coating layer is, at room temperature, lower than the thermal conductivities of the cylinder block, the cylinder head, the valve and the piston, the thermal conductivity of the coating layer is reversibly increased along with a rise in the temperature of the coating layer, and wherein the heat capacity per unit area of the coating layer is more than 0 kJ/(m2·K) and 4.2 kJ/(m2·K) or less.
    Type: Application
    Filed: February 9, 2017
    Publication date: October 12, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Taizo YOSHINAGA, Takeo YAMAGUCHI, Hideo YAMASHITA
  • Publication number: 20170209927
    Abstract: A solid freeform fabrication powder material includes a metal particle, and a water-soluble organic material particle. The water-soluble organic material particle accounts for 2-18 percent by volume of the solid freeform fabrication powder material and the water-soluble organic material particle has a volume average particle diameter of 3-15 ?m.
    Type: Application
    Filed: January 12, 2017
    Publication date: July 27, 2017
    Inventors: Yasuyuki YAMASHITA, Yasuo SUZUKI, Hitoshi IWATSUKI, Teruki KUSAHARA, Takeo YAMAGUCHI, Takuya SAITO, Nozomu TAMOTO
  • Publication number: 20170175232
    Abstract: A thermal insulation material containing an Al—Cu—Fe-based alloy, wherein at least part of the Al—Cu—Fe-based alloy comprises a quasicrystalline phase, wherein the Al—Cu—Fe-based alloy contains one or more transition elements selected from the group of Ru, Rh, Pd, Ag, Os, Jr, Pt, and Au, and wherein the total of the transition elements is from 0.25 to 0.75 atom % when the whole of the Al—Cu—Fe-based alloy is 100 atom %.
    Type: Application
    Filed: December 1, 2016
    Publication date: June 22, 2017
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota School Foundation
    Inventors: Taizo YOSHINAGA, Ryosuke MAEKAWA, Yohei KINOSHITA, Takeo YAMAGUCHI, Hideo YAMASHITA, Tsunehiro TAKEUCHI
  • Patent number: 9605378
    Abstract: A textile printing method that includes printing to a textile with a material including a dye expressed by the following general formula 1. In general formula 1, R1 to R16 is H, CH3, OH, NHC2H5, COOH, SO3H, SO3Na, NO2, or NH2.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: March 28, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Tsuyoshi Asami, Tsuneo Kurotori, Takeo Yamaguchi, Noriaki Okada
  • Publication number: 20160368806
    Abstract: A material set for manufacturing a glass object includes a powder material including glass and a first water soluble resin; and a liquid material including water and a second water soluble resin having a mass average molecular weight of less than 50
    Type: Application
    Filed: June 9, 2016
    Publication date: December 22, 2016
    Inventors: Takeo YAMAGUCHI, Hitoshi IWATSUKI, Kazumi OHTAKI, Takuya SAITO, Teruki KUSAHARA
  • Publication number: 20160271695
    Abstract: Provided is a liquid material for forming a three-dimensional object used for forming a three-dimensional object made of a powder material for forming a three-dimensional object containing an organic material and a base material, wherein the liquid material contains a solvent and a cross-linking agent cross-linkable with the organic material, and wherein a rate of viscosity change of the liquid material between before and after the liquid material is left to stand still at 50° C. for three days is lower than 20%.
    Type: Application
    Filed: February 9, 2016
    Publication date: September 22, 2016
    Inventors: Keiko OSAKA, Takeo YAMAGUCHI
  • Publication number: 20160272844
    Abstract: Provided is a liquid material for forming a three-dimensional object used for forming a three-dimensional object made of a powder material for forming a three-dimensional object containing an organic material and a base material, wherein the liquid material contains a cross-linking agent cross-linkable with the organic material and a water-soluble resin having a weight average molecular weight of greater than or equal to 50,000.
    Type: Application
    Filed: February 11, 2016
    Publication date: September 22, 2016
    Inventors: Keiko OSAKA, Takeo Yamaguchi
  • Publication number: 20160243765
    Abstract: A stereoscopic modeling apparatus is provided. The stereoscopic modeling apparatus includes a modeling tank, a liquid discharger, and a powder supplier. In the modeling tank, a powder layer including a powder is formed and a modeling layer in which the powder in the powder layer is bonded into a required shape is laminated. The liquid discharger discharges a modeling liquid to the powder in the modeling tank. The powder supplier supplies the powder to the modeling tank. The powder supplier supplies the powder to the powder layer while at least a part of the modeling liquid discharged from the liquid discharger and adhered to a surface of the powder layer remains existing on an outermost surface of the powder layer.
    Type: Application
    Filed: January 14, 2016
    Publication date: August 25, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Takafumi Sasaki, Takeo Yamaguchi
  • Publication number: 20160214320
    Abstract: A stereoscopic modeling apparatus including a modeling part, a modeling unit, and a controller is provided. The modeling part forms a powder layer with a powder. The modeling unit discharges droplets of a modeling liquid on the powder layer to form a modeling layer in which particles of the powder are bonded. The controller causes the modeling part and the modeling unit to repeat forming the powder layer and the modeling layer, respectively, to sequentially laminate the modeling layer to form a stereoscopic modeled product. The droplets include a preceding droplet and a succeeding droplet sequentially discharged to adjacent positions on the powder layer, and the succeeding droplet is discharged after the preceding droplet is discharged and within a time period in which a contact angle between the preceding droplet impacted on the powder layer and the powder in the powder layer remains greater than 90 degrees.
    Type: Application
    Filed: December 15, 2015
    Publication date: July 28, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Takafumi SASAKI, Takeo YAMAGUCHI
  • Publication number: 20160208133
    Abstract: An object of the present invention is to find a cationic electrodeposition coating composition excellent in throwing power, anti-GA gas pinhole properties, and anti-corrosion properties, and to provide a coated article excellent in these coating film properties. The present invention provides a cationic electrodeposition coating composition containing an amino-containing epoxy resin (A), a blocked polyisocyanate curing agent (B), and a pigment (C), the amino-containing epoxy resin (A) being obtained by reacting an epoxy resin (A1), a polyphenol compound (A2), a dimer acid diglycidyl ester (A3), and an amine compound (A4).
    Type: Application
    Filed: January 11, 2016
    Publication date: July 21, 2016
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KANSAI PAINT CO., LTD.
    Inventors: Takeo YAMAGUCHI, Motohide MORI, Masahiro NAKAMURA, Hiroshi HOSONO, Minoru HANATANI, Shigetaka SETODOI
  • Publication number: 20160040025
    Abstract: Provided is a three-dimensional object formation powder material used for three-dimensional object formation of forming a three-dimensional object by stacking up a plurality of powder material layers each bound by a resin and having a predetermined shape. The three-dimensional object formation powder material contains particles in which a plurality of cores are fixed by a water-soluble resin.
    Type: Application
    Filed: August 3, 2015
    Publication date: February 11, 2016
    Inventors: Yoshihiro NORIKANE, Yasutada Shitara, Teruki Kusahara, Takuya Saito, Takeo Yamaguchi
  • Publication number: 20150152591
    Abstract: A textile printing method that includes printing to a textile with a material including a dye expressed by the following general formula 1. In general formula 1, R1 to R16 is H, CH3, OH, NHC2H5, COOH, SO3H, SO3Na, NO2, or NH2.
    Type: Application
    Filed: December 1, 2014
    Publication date: June 4, 2015
    Inventors: Tsuyoshi Asami, Tsuneo Kurotori, Takeo Yamaguchi, Noriaki Okada
  • Publication number: 20150099207
    Abstract: Provided is a catalyst layer for gas diffusion electrode that can be used without using carbon supports, a method for manufacturing the same, a membrane electrode assembly, and a fuel cell. The catalyst layer for gas diffusion electrode according to the present invention include a network-like metallic catalyst formed of a sintered body, the network-like metallic catalyst including nanoparticles linked with each other to have electron conductivity; and an ion conductor, at least a part of the ion conductor contacting the network-like metallic catalyst. Further, the membrane electrode assembly according to the present invention includes a polymer electrolyte membrane provided between an anode catalyst layer and cathode catalyst layer, and the catalyst layer for gas diffusion electrode stated above is used in at least one of the anode catalyst layer and the cathode catalyst layer.
    Type: Application
    Filed: October 3, 2014
    Publication date: April 9, 2015
    Inventors: Takeo YAMAGUCHI, Shun OGURA, Takanori TAMAKI, Teruaki FUCHIGAMI, Yoshitaka KITAMOTO, Hidenori KUROKI
  • Publication number: 20140097766
    Abstract: A load control device includes saturable devices, loads, a phase controller, a bypass unit, and a controller. Plural saturable devices are connected in series to each other. Plural loads are respectively connected to the saturable devices and are supplied with power via the saturable devices. The phase controller phase-controls an output voltage of an AC power supply so as to be supplied to the respective loads. The bypass unit can supply a reduced bypass current so as to bypass the phase controller from a zero cross point of each half cycle of an AC power supply voltage. The controller sets an output of the phase controller and controls the output thereof to a set output value, and stops the supply of the bypass current in a condition in which a firing angle (conduction phase) is equal to or more than the predetermined value.
    Type: Application
    Filed: August 30, 2013
    Publication date: April 10, 2014
    Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    Inventors: Koji Migita, Akinori Imahashi, Hiromi Matsumoto, Takeo Yamaguchi
  • Patent number: 8632701
    Abstract: This invention provides an organic-inorganic hybrid material, which can exhibit high proton conductivity in a wide temperature range of a low temperature to a high temperature, a proton conductive material, which has a small particle diameter, that is, has a particle diameter capable of reaching pores of primary particles of carbon powder or the like, and has controlled particle diameters, a catalyst layer containing these materials for a fuel cell and an electrolyte film containing these materials for a fuel cell, and a fuel cell. The proton conductive hybrid material comprises proton conductive inorganic nanoparticles and a proton conductive polymer, wherein the Stokes particle diameter of the proton conductive hybrid material by dynamic light scattering is not more than 20 nm.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: January 21, 2014
    Assignee: The University of Tokyo
    Inventors: Takeo Yamaguchi, Ju Myeung Lee, Gopinathan Madhavikutty Anilkumar
  • Publication number: 20120196206
    Abstract: The disclosed methods enable zirconium sulfophenyl phosphonate, zirconium sulfate, or zirconia sulfate, which has high performance as a proton conducting material and high catalytic activity, to be produced at low temperature by reaction by adding sulfophenyl phosphonic acid or sulfuric acid to zirconium nanoparticles, the zirconium nanoparticles being a precursor of strongly acidic zirconium particles obtained by reacting zirconium alkoxide with zirconium butoxide as a chelating agent and nitric acid as a catalyst in isopropyl alcohol as a solvent.
    Type: Application
    Filed: March 25, 2010
    Publication date: August 2, 2012
    Applicant: TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Takeo Yamaguchi, Yuma Kikuchi, Ju-Myeung Lee, Hidenori Ohashi, Takanori Tamaki