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).

  • Publication number: 20210288341
    Abstract: A substrate for a composite membrane includes a microporous polyolefin membrane for carrying a hydrophilic resin compound within the pores of the microporous membrane wherein: the average pore diameter is 1 nm to 50 nm; the porosity is 50% to 78%; the membrane thickness is 1 ?m to 12 ?m; and, when a mixed solution of ethanol and water (volume ratio ½) is dripped onto a surface of the microporous polyolefin membrane which has not undergone hydrophilization treatment, the contact angle ?1 between the droplet and the surface is 0 to 90 degrees 1 second after the dripping, and the contact angle ?2 between the droplet and the surface is 0 to 70 degrees 10 minutes after the dripping, and the rate of change of the contact angle ((?1??2)/?1×100) is 10 to 50%.
    Type: Application
    Filed: May 31, 2017
    Publication date: September 16, 2021
    Applicant: TEIJIN LIMITED
    Inventors: Takeo YAMAGUCHI, Yuhei OSHIBA, Hidenori OHASHI, Jin TOMATSU, Koji FURUYA, Takao OHNO, Mami NANBU
  • Publication number: 20210098801
    Abstract: A passive thermal management system is provided for a fuel cell stack, along with methods for maintaining a uniform temperature across a fuel cell stack during cold weather conditions. The system includes a plurality of fuel cells arranged as a fuel cell stack. The fuel cell stack includes a main body portion defining an exterior surface and having first and second opposing end walls. The system includes a first end frame component having a first phase change material in thermal communication with the first end wall. A second end frame component is provided having a second phase change material in thermal communication with the second end wall. An insulation layer is wrapped around the exterior surface of the main body portion and is provided in thermal communication with the plurality of fuel cells.
    Type: Application
    Filed: September 27, 2019
    Publication date: April 1, 2021
    Inventors: Tenghua Shieh, Takeo Yamaguchi, Gaohua Zhu, Debasish Banerjee, Swetha Minupuri
  • Patent number: 10767071
    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: Grant
    Filed: February 11, 2016
    Date of Patent: September 8, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Keiko Osaka, Takeo Yamaguchi
  • Publication number: 20200266509
    Abstract: It is an object of the disclosure to provide a novel air secondary battery, air secondary battery system, and vehicle with the mounted air secondary battery system. The air secondary battery of the disclosure comprises, as the negative electrode active material, an oxide that is capable of topotactic insertion and dissociation of oxygen atoms. The air secondary battery system of the disclosure has an air secondary battery and a heat source that supplies heat to the air secondary battery. The vehicle of the disclosure has the air secondary battery system described above mounted in it and uses the electric power provided by the air secondary battery as at least part of its drive power.
    Type: Application
    Filed: January 22, 2020
    Publication date: August 20, 2020
    Inventors: Takeo YAMAGUCHI, Hiroshi Suyama, Yutaka Hirose
  • Patent number: 10563623
    Abstract: An EGR cooler in the disclosure includes: a gas path configured to allow an EGR gas to flow; a refrigerant path configured to perform heat exchange between the EGR gas circulating along the gas path and a refrigerant; an exothermic body containing portion configured such that an exothermic body to generate heat by adsorbing a predetermined working gas is contained within the EGR cooler and at least a part of the exothermic body contacts with a wall surface of the gas path; a working gas tank in which the working gas is stored; and a gas moving apparatus configured to move the working gas stored in the working gas tank, from the working gas tank to the exothermic body containing portion.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: February 18, 2020
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tomohiro Shinagawa, Takashi Hotta, Takeo Yamaguchi, Yoshio Ohashi, Taizo Yoshinaga, Yuji Miyoshi
  • Patent number: 10550282
    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: Grant
    Filed: January 11, 2016
    Date of Patent: February 4, 2020
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, KANSAI PAINT CO., LTD.
    Inventors: Takeo Yamaguchi, Motohide Mori, Masahiro Nakamura, Hiroshi Hosono, Minoru Hanatani, Shigetaka Setodoi
  • Patent number: 10464241
    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: Grant
    Filed: December 15, 2015
    Date of Patent: November 5, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Takafumi Sasaki, Takeo Yamaguchi
  • Patent number: 10442141
    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: Grant
    Filed: January 14, 2016
    Date of Patent: October 15, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Takafumi Sasaki, Takeo Yamaguchi
  • Publication number: 20190267655
    Abstract: To provide an electrolyte membrane that exhibits high proton conductivity even at low humidity, the electrolyte membrane includes a composite membrane including: a microporous polyolefin membrane that has an average pore diameter of 1 to 1000 nm and a porosity of 50 to 90% and that can be impregnated with a solvent having a surface free energy of 28 mJ/m2 or more, and an electrolyte containing a perfluorosulfonic acid polymer having an EW of 250 to 850 loaded into the pores of the microporous polyolefin membrane, wherein the membrane thickness of the composite membrane is 1 to 20 ?m.
    Type: Application
    Filed: May 31, 2017
    Publication date: August 29, 2019
    Applicants: TOKYO INSTITUTE OF TECHNOLOGY, TEIJIN LIMITED, KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Takeo YAMAGUCHI, Yuhei OSHIBA, Hidenori OHASHI, Jin TOMATSU, Koji FURUYA, Takao OHNO, Mami NANBU
  • Patent number: 10354785
    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: Grant
    Filed: May 10, 2017
    Date of Patent: July 16, 2019
    Assignees: Toyota Jidosha Kabushiki Kaisha, Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Takeo Yamaguchi, Gaohua Zhu
  • Publication number: 20190186430
    Abstract: An EGR cooler in the disclosure includes: a gas path configured to allow an EGR gas to flow; a refrigerant path configured to perform heat exchange between the EGR gas circulating along the gas path and a refrigerant; an exothermic body containing portion configured such that an exothermic body to generate heat by adsorbing a predetermined working gas is contained within the EGR cooler and at least a part of the exothermic body contacts with a wall surface of the gas path; a working gas tank in which the working gas is stored; and a gas moving apparatus configured to move the working gas stored in the working gas tank, from the working gas tank to the exothermic body containing portion.
    Type: Application
    Filed: October 15, 2018
    Publication date: June 20, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tomohiro SHINAGAWA, Takashi HOTTA, Takeo YAMAGUCHI, Yoshio OHASHI, Taizo YOSHINAGA, Yuji MIYOSHI
  • 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