Patents Assigned to Kyoto Institute of Technology
  • Patent number: 9500932
    Abstract: The present invention provides a fast-response photorefractive polymer element (1) including two insulating substrates (2, 2) arranged substantially in parallel with each other, ITO electrodes (3, 3) provided on inner surfaces (2a, 2a) of two insulating substrates (2, 2), dark current control layers (4, 4) provided on inner surfaces (3a, 3a) of ITO electrodes (3, 3), and a photorefractive composite material (5) provided between two insulating substrates (2, 2) with ITO electrodes (3, 3) and dark current control layers (4, 4). The photorefractive composite material (5) contains polytriarylamine (PTAA) which is a photorefractive polymer, and a dark current control layer (4) is a single-layered monomolecular film or multi-layered monomolecular films. With these configurations, a fast-response photorefractive polymer element achieves significantly improved responsiveness.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: November 22, 2016
    Assignee: National University Corporation Kyoto Institute of Technology
    Inventors: Naoto Tsutsumi, Kenji Kinashi, Hironori Shinkai
  • Publication number: 20160093448
    Abstract: A photocatalyst material and a photocatalyst device capable of generating hydrogen from water by radiation of sunlight at high efficiency. The photocatalyst material according to the present invention includes a nitride-based compound semiconductor obtained by replacement of part of Ga and/or Al by a 3d-transition metal. The nitride-based compound semiconductor has one or more impurity bands. A light absorption coefficient of the nitride-based compound semiconductor is 1,000 cm?1 or more in an entire wavelength region of 1,500 nm or less and 300 nm or more. Further, the photocatalyst material satisfies the following conditions: the energy level of the bottom of the conduction band is more negative than the redox potential of H+/H2; the energy level of the top of the valence band is more positive than the redox potential of O2/H2O; and there is no or little degradation of a material even when the material is irradiated with light underwater.
    Type: Application
    Filed: August 12, 2015
    Publication date: March 31, 2016
    Applicants: SAKAI CHEMICAL INDUSTRY CO., LTD., NATIONAL UNIVERSITY CORPORATION KYOTO INSTITUTE OF TECHNOLOGY
    Inventors: Saki Sonoda, Osamu Kawasaki, Junichi Kato, Mutsuo Takenaga
  • Patent number: 9201397
    Abstract: A digital holography device (1) which is capable of measuring a subject with high accuracy by correcting intensity unevenness by accurately removing zeroth-order diffracted light, includes: a hologram generating section (26) for generating a first hologram and a second hologram each obtained by extracting components identical in phase shift amount from a polarizer array hologram which is recorded in an image capturing device (7) mounted with a polarizer array (6); a dividing section (3) for dividing the first hologram into a plurality of first regions, and dividing the second hologram into a plurality of second regions; a comparing section (4) for comparing a first average value of an intensity in a first region of the first hologram and a second average value of an intensity in a second region of the second hologram which region corresponds to the first region; and a correcting section (5) for, in a case where the first average value and the second average value differ, correcting at least one of the first a
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: December 1, 2015
    Assignee: National University Corporation Kyoto Institute of Technology
    Inventors: Yasuhiro Awatsuji, Peng Xia, Tatsuki Tahara
  • Publication number: 20150219574
    Abstract: There is provided a calorimeter. Heat flows in and out of the sample via a thermoelectric module. The thermoelectric module is so constituted that a pair of a P-type thermoelectric element and an N-type thermoelectric element is disposed between substrates, and the pair of the thermoelectric elements are connected in n pairs so that the P-type thermoelectric elements and the N-type thermoelectric element are arranged alternately in ?-shape; a calorimetric sensitivity of the thermoelectric module of a thermal conductance surrounding thermoelectric module and a thermal conductance between substrates of the thermoelectric modules and a noise based on an electric resistance of the thermoelectric module depend on an L/A ratio of the thermoelectric element constituting the thermoelectric module and the number n of the pairs of the thermoelectric elements, where the L/A ratio is 6 mm?1 or more, and the number n of the pairs is 4 or more.
    Type: Application
    Filed: August 7, 2013
    Publication date: August 6, 2015
    Applicant: NATIONAL UNIVERSITY CORPORATION KYOTO INSTITUTE OF TECHNOLOGY
    Inventor: Haruhiko Yao
  • Publication number: 20150205260
    Abstract: A digital holography device of an embodiment of the present invention includes: an image sensing device which records, in an image sensor and on the basis of an object, a plurality of holograms that correspond to respective different photographic exposure values; and a computer which (i) generates a high dynamic range hologram, which includes pieces of information ranging from low luminance information to high luminance information, by synthesizing the plurality of holograms recorded and (ii) generates a reconstructed image of the object by performing arithmetic processing of phase-shift interferometry, diffraction calculation, and/or the like on the basis of the high dynamic range hologram.
    Type: Application
    Filed: August 28, 2013
    Publication date: July 23, 2015
    Applicant: National University Corporation Kyoto Institute of Technology
    Inventors: Yasuhiro Awatsuji, Ryosuke Yonesaka, Tatsuki Tahara
  • Patent number: 9054406
    Abstract: A nonreciprocal transmission line apparatus is provided with a cascade connection of unit cells between ports. Each unit cell includes a transmission line part for a microwave signal, and shunt branch circuits equivalently including inductive elements. Each unit cells has spontaneous magnetization or is magnetized by an external magnetic field so as to have gyrotropy by being magnetized in a magnetization direction different from a propagation direction of the transmission line part. In each of the unit cells, the shunt branch circuits includes a first stub conductor formed on one side with respect to a plane composed of the propagation direction and the magnetization direction, and a second stub conductor formed on the other side with respect to the plane, and the stub conductors have different electric length from each other.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: June 9, 2015
    Assignee: NATIONAL UNIVERSITY CORPORATION KYOTO INSTITUTE OF TECHNOLOGY
    Inventors: Tetsuya Ueda, Hiroyuki Kishimoto
  • Patent number: 8945453
    Abstract: The present invention provides a method for producing a PTFE fiber that makes it possible, unlike the emulsion spinning process, to obtain a polytetrafluoroethylene (PTFE) fiber, particularly a long PTFE fiber, without using a matrix material, is more productive than conventional production methods such as a slit yarn process, and is capable of enhancing mechanical properties and the degree of freedom in diameter of the obtained fiber. The method for producing the PTFE fiber of the present invention includes the step of reducing a diameter of a string-shape PTFE-containing solid material (a first solid material) by drawing the first solid material at a temperature equal to or higher than a melting point of PTFE. The first solid material can be obtained from a PTFE-containing solid material (a second solid material) containing water and a surfactant, by reducing an amount of the water contained in the second solid material.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: February 3, 2015
    Assignees: Nitto Denko Corporation, National University Corporation Kyoto Institute of Technology
    Inventors: Daisuke Kitagawa, Takashi Wano, Hideki Yamane, Yoshihito Takagi
  • Patent number: 8947317
    Abstract: A reflective impedance element is connected to a port of a composite right/left-handed transmission line, and operates at a predetermined operating frequency so that an impedance when the reflective impedance element is seen from the port becomes a pure imaginary number jB. A reflective impedance component is connected to a port of the composite right/left-handed transmission line, and operates at the predetermined operating frequency so that an impedance when the reflective impedance element is seen from the port becomes ?jB.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: February 3, 2015
    Assignee: National University Corporation Kyoto Institute of Technology
    Inventors: Tetsuya Ueda, Gouki Haida, Shintaro Yamamoto
  • Patent number: 8883985
    Abstract: The present invention provides an antibody-immobilized carrier that can be used in antibody screening, a method of producing the antibody-immobilized carrier, and use of the antibody-immobilized carrier. Efficient antibody screening can be carried out particularly by an antibody-immobilized carrier including two or more antibody immobilized regions onto each of which a heavy-chain low-molecular-weight antibody and a light-chain low-molecular-weight antibody are separately immobilized, the two or more antibody immobilized regions each being included in an independent manner, the heavy-chain low-molecular-weight antibody including a heavy-chain variable region, the light-chain low-molecular-weight antibody including a light-chain variable region, the heavy-chain low-molecular-weight antibody and the light-chain low-molecular-weight antibody each being derived from an antibody recognizing a different antigen.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: November 11, 2014
    Assignees: National University Corporation Kyoto Institute of Technology, Denka Seiken Co., Ltd.
    Inventors: Yoichi Kumada, Michimasa Kishimoto, Kyoko Hamasaki, Aya Nakagawa
  • Publication number: 20140329046
    Abstract: According to the present invention, a carbon-fiber preform for a carbon-fiber-reinforced plastic is formed from mutually intersecting warp and weft each of which including a carbon-fiber multifilament yarn. At least one of layer surfaces has fluff formed by cutting some of filaments of the carbon-fiber multifilament yarn, and a total fluff length of fluff formed on the warp and a total fluff length of fluff formed on the weft are not equal. The present invention provides a CFRP in which the delamination strength (interlaminar shear strength) is improved and that has a high strength.
    Type: Application
    Filed: October 1, 2012
    Publication date: November 6, 2014
    Applicants: KYOTO INSTITUTE OF TECHNOLOGY, TSUDAKOMA CORP.
    Inventors: Jun Hirai, Makoto Takashima, Norio Kuchida, Asami Nakai, Hiroyuki Hamada
  • Publication number: 20140220626
    Abstract: Provided is a peptide containing a variable region and improved in production efficiency. The peptide contains a variable region to which an antigen-binding site is to be formed and has an amino acid sequence expressing a specific adsorption function to a solid phase at a site closer to the C-terminal than a heavy-chain variable region or at a site closer to the C-terminal than a light-chain variable region.
    Type: Application
    Filed: November 22, 2013
    Publication date: August 7, 2014
    Applicants: National University Corporation Kyoto Institute of Technology, ENPLAS CORPORATION
    Inventors: Mitsuyasu Koike, Kyoko Hamasaki, Yuki Shiritani, Michimasa Kishimoto, Yoichi Kumada, Takuhito Ohse
  • Patent number: 8786755
    Abstract: A polarization imaging apparatus includes a laser light source and an image pickup element. Object light and reference light each include a first polarized-light component polarized in a first direction and a second polarized-light component polarized in a second direction that is different from the first direction. The image pickup element simultaneously captures an image of an interference pattern including (i) a first interference figure, (ii) a second interference figure, (iii) a third interference figure, and (iv) a fourth interference figure. The polarization imaging apparatus includes a reconstructing section generating respective reconstructed images of the object in regard to the first and second polarized-light components, from the first to fourth interference figures, and a polarized-light-image-calculating section obtaining polarized-light images from the reconstructed images.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: July 22, 2014
    Assignee: National University Corporation Kyoto Institute of Technology
    Inventors: Yasuhiro Awatsuji, Tatsuki Tahara
  • Publication number: 20140158202
    Abstract: There is provided a new light-absorbing material and a photoelectric conversion element using the same, which are capable of improving conversion efficiency of a solar cell. The light-absorbing material in the present invention is made up of a GaN-based compound semiconductor with part of Ga replaced by a 3d transition metal, and has one or more impurity bands, and whose light absorption coefficient over an overall wavelength region of not longer than 1500 nm and not shorter than 300 nm is not lower than 1000 cm?1.
    Type: Application
    Filed: December 6, 2013
    Publication date: June 12, 2014
    Applicant: National University Corporation Kyoto Institute of Technology
    Inventors: Saki SONODA, Masahiro Yoshimoto
  • Patent number: 8734574
    Abstract: A gas separation membrane is provided which has both excellent gas permeability and gas separation characteristics, particularly permeability of carbon dioxide (CO2) and separation characteristics of carbon dioxide and methane (CH4), at such a high level that has not hitherto been achieved. The gas separation membrane was obtained by heat treating a membrane composed of a hyperbranched polyimide-based material in a non-oxidizing atmosphere.
    Type: Grant
    Filed: February 17, 2012
    Date of Patent: May 27, 2014
    Assignees: Ibiden Co., Ltd., National University Corporation Kyoto Institute of Technology
    Inventors: Tomoyuki Suzuki, Yasuharu Yamada
  • Patent number: 8725431
    Abstract: A tactile sensor unit is provided, which includes a substrate; a coat formed on the substrate; and a cantilever beam structure having one end fixed to the substrate and curved to rise in such a direction that the other end of the cantilever beam structure is farther from the substrate than the one end. The tactile sensor unit detects a load applied to the coat. The cantilever beam structure is capable of resonating at a first resonant frequency and a second resonant frequency which is different from the first resonant frequency. The tactile sensor unit further includes a computation section for calculating a directional component of the load based on a change ratio of the first resonant frequency obtained in accordance with a change in the load and a change ratio of the second resonant frequency obtained in accordance with the change in the load.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: May 13, 2014
    Assignee: National University Corporation Kyoto Institute of Technology
    Inventor: Kaoru Yamashita
  • Patent number: 8696901
    Abstract: The present invention relates to a polymeric porous material characterized in that: the porous material has a bimodal pore size distribution attributable to macropores having a pore size of at least 50 nm and mesopores having a pore size of from 2 nm to less than 50 nm, the proportion of the specific surface area of the macropores to the specific surface area of all pores of the porous material is at least 10%, and the porous material is produced by (1) polymerizing a monomer in the presence of a polymerization initiator using as a porogen a solution obtained by dissolving a polymer having a weight-average molecular weight of at least 100,000 and a molecular weight distribution Mw/Mn of not more than 1.5 in a good solvent for the monomer, and (2) removing the porogen from the resultant product.
    Type: Grant
    Filed: May 9, 2006
    Date of Patent: April 15, 2014
    Assignees: National University Corporation Kyoto Institute of Technology, Emaus Kyoto, Inc.
    Inventors: Ken Hosoya, Hiroshi Aoki, Norio Ishizuka, Katsuya Yamamoto
  • Patent number: 8665504
    Abstract: A digital holography device includes a light source that emits light, the light source being provided for supply of object light beams formed by radiation, transmission, scattering, reflection, or diffraction of the emitted light from a subject, an array device that splits the light emitted from the light source into two kinds of reference light beams having different phases in a plane perpendicular to a direction in which the light emitted from the light source travels, a CCD camera having an image-capturing plane on which two kinds of interference fringe patterns are recorded, the interference fringe patterns being formed by interferences between the two kinds of reference light beams, and the object light beams, and an image reconstruction device that generates a reconstructed image of the subject from the two kinds of interference fringe patterns recorded on the image-capturing plane.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: March 4, 2014
    Assignee: National University Corporation Kyoto Institute of Technology
    Inventors: Yasuhiro Awatsuji, Atsushi Kaneko, Takamasa Koyama, Tatsuki Tahara, Takeshi Wakamatsu
  • Patent number: 8654343
    Abstract: An embodiment of the present invention realizes an interference measurement apparatus which can obtain an interference image to be used for obtaining three-dimensional information of a subject which dynamically changes.
    Type: Grant
    Filed: January 13, 2010
    Date of Patent: February 18, 2014
    Assignee: National University Corporation Kyoto Institute of Technology
    Inventors: Yasuhiro Awatsuji, Tatsuki Tahara
  • Patent number: 8642694
    Abstract: There are provided: a bio-based coating composition which is a bio-based ingredient coating composition in consideration of environment and does not need any expensive ingredient and is also excellent in hydrolysis resistance; and an article coated with the coating composition. The bio-based coating composition is characterized by comprising the following film-forming ingredients: a lactic acid polymer (A) which contains a polyfunctional compound having a hydroxyl group and/or a carboxyl group in a functionality of not less than 3 and lactic acid as essential monomer ingredients and has a specific SP value; and a resin (B) which contains a hydroxyl group and/or a carboxyl group and has a specific SP value; wherein the difference (?SP) between the SP values of the lactic acid polymer (A) and the resin (B) is in the range of 0.2 to 4.0. The coated article is characterized by being obtained by being coated with the aforementioned coating composition.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: February 4, 2014
    Assignees: Nippon Bee Chemical Co., Ltd., National University Corporation Kyoto Institute of Technology, Toyota Jidosha Kabushiki Kaisha
    Inventors: Koji Morita, Hirofumi Yamashita, Hitomi Ohara, Shiro Kobayashi, Masahiko Ishii
  • Patent number: 8618247
    Abstract: Provided is a peptide containing a variable region and improved in production efficiency. The peptide contains a variable region to which an antigen-binding site is to be formed and has an amino acid sequence expressing a specific adsorption function to a solid phase at a site closer to the C-terminal than a heavy-chain variable region or at a site closer to the C-terminal than a light-chain variable region.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: December 31, 2013
    Assignees: Enplas Corporation, National University Corporation Kyoto Institute of Technology
    Inventors: Yoichi Kumada, Michimasa Kishimoto, Yuki Shiritani, Kyoko Hamasaki, Takuhito Ohse, Mitsuyasu Koike