Patents Assigned to Nagaoka University of Technology
-
Patent number: 8201421Abstract: To obtain an optical component having excellent secondary optical nonlinear properties by irradiating a surface and/or inside of glass having at least one member selected from Ni, Fe, V, Cu, Cr and Mn as a heat source material for absorbing and converting a laser beam to heat, incorporated to a glass matrix comprising at least one glass-forming oxide-selected from SiO2, GeO2, B2O3, P2O5, TeO2, Ga2O3, V2O5, MoO3 and WO3 and at least one member selected from alkali metals, alkaline earth metals, rare earth elements and transition elements, with a laser beam with a wavelength to be absorbed by the heat source material, to convert the irradiated portion to a single crystal or a group of crystal grains comprising components contained in the glass matrix and not containing the heat source material, thereby to form a pattern.Type: GrantFiled: August 11, 2008Date of Patent: June 19, 2012Assignees: Asahi Glass Company, Limited, Nagaoka University of TechnologyInventors: Takayuki Komatsu, Tsuyoshi Honma, Takumi Fujiwara, Yasuhiko Benino
-
Publication number: 20110319784Abstract: An emotional state determining apparatus capable of determining an emotional state of a subject without reducing determination accuracy even if the number of brain wave signals to be used is reduced. A multifractal dimension computing section 3 computes multifractal dimensions based on brain wave signals or brain wave difference signals. An emotional state determining section 4 receives input data on the multifractal dimensions, and determines an emotional state of the subject based on determination criteria which are determined in advance by using as reference data the brain wave signals obtained from a reference person. Generalized latent dimensions (vector) respectively obtained by substituting a plurality of different values determined in advance for a Hurst exponent characteristic q in a generalized latent dimension Dq=1/Hq, which is a reciprocal number of a generalized Hurst exponent Hq obtained from the brain wave signals or the brain wave difference signals, are used as the multifractal dimensions.Type: ApplicationFiled: February 12, 2010Publication date: December 29, 2011Applicant: NAGAOKA UNIVERSITY OF TECHNOLOGYInventor: Masahiro Nakagawa
-
Patent number: 8040101Abstract: A current source rectifier is provided at an output of an alternating current generator, an alternating current motor is connected to an output of the rectifier via a voltage source inverter, furthermore, two arms having switching elements connected in inverse parallel to diodes are connected to the output of the rectifier, and one terminal of a direct current power source capable of a power supply and absorption is connected to a midpoint between the arms, while the other terminal thereof is connected to a neutral point of motor coils or generator coils, thereby eliminating a need for a large volumetric reactor in a direct current chopper, achieving a downsizing of the circuit.Type: GrantFiled: January 12, 2009Date of Patent: October 18, 2011Assignees: National University Corporation Nagaoka University of Technology, Fuji Electric Co., Ltd.Inventors: Jun-ichi Itoh, Michio Iwahori, Masakazu Gekinozu
-
Publication number: 20110247560Abstract: A disclosed substrate processing apparatus comprises a reaction chamber; a substrate supporting portion that is provided in the reaction chamber and configured to support a substrate; and plural catalyst reaction portions that are arranged in the reaction chamber in order to oppose the substrate supporting portion, and configured to produce a reaction gas by allowing a source gas introduced from a gas introduction portion to contact a catalyst and to eject the reaction gas to an inner space of the reaction chamber, thereby processing the substrate supported by the substrate supporting portion with the ejected reaction gas.Type: ApplicationFiled: November 19, 2009Publication date: October 13, 2011Applicants: TOKYO ELECTRON LIMITED, NATIONAL UNIVERSITY CORPORATION NAGAOKA UNIVERSITY OF TECHNOLOGYInventors: Kanji Yasui, Hiroshi Nishiyama, Yasunobu Inoue, Mitsuru Ushijima, Katsuhiko Iwabuchi
-
Publication number: 20110236269Abstract: A microreactor having a reaction mixture inlet, a reaction mixture channel, and a reaction mixture outlet is provided, in which a piezoelectric material that generates surface acoustic waves and has, formed on the surface thereof, a thin film having catalytic activity is disposed in the reaction mixture channel so that the inner surface of the reaction mixture channel is configured from the thin film. The thin film having catalytic activity can be constituted of a material selected from a group consisting of metals, metal oxides, and complexes of organic compounds. The microreactor attains remarkable improvements in the effect of stirring a reaction mixture and catalysis, whereby a chemical reaction can be evenly and efficiently accelerated. The microreactor is free from channel clogging and pressure loss and hence renders a stable and precise chemical reaction possible.Type: ApplicationFiled: September 14, 2009Publication date: September 29, 2011Applicant: National University Corporation Nagaoka University of TechnologyInventors: Yasunobu Inoue, Hiroshi Nishiyama, Ryuusuke Asari
-
Publication number: 20110229637Abstract: A disclosed substrate processing method includes steps of: arranging a substrate in a chamber; introducing H2 gas at a first flow rate and O2 gas at a second flow rate independently from the H2 gas into a catalyst reaction portion in which catalyst is accommodated, wherein H2O gas produced from the H2 gas and the O2 gas that contact the catalyst is ejected from the catalyst reaction portion toward the substrate; and reducing a flow rate of the O2 gas introduced to the catalyst reaction portion to a third flow rate that is lower than the second flow rate, wherein the steps of introducing the H2 gas and the O2 gas and reducing the flow rate of the O2 gas are repeated in this order at a predetermined repetition frequency, thereby processing the substrate.Type: ApplicationFiled: November 19, 2009Publication date: September 22, 2011Applicants: National University Corporation Nagaoka University Technology, TOKYO ELECTRON LIMITEDInventors: Kanji Yasui, Hiroshi Nishiyama, Yasunobu Inoue, Mitsuru Ushijma, Katsuhiko Iwabuchi
-
Publication number: 20110222651Abstract: There is provided an inverter circuit which allows a single drive circuit to carry out both the tracking control for tracking resonance frequency fluctuations caused by load fluctuations, and the power control, thereby reducing switching loss. An inverter drive circuit part obtains a phase difference between output current and output voltage directed to a load circuit which is connected to a midpoint of two arm circuits of the inverter circuit, and controls a phase of the driving signal directed to each of the semiconductor switches in such a manner that the phase difference becomes zero or a predetermined value. This allows an operating frequency of the inverter circuit part to track a resonance frequency of the load circuit. In addition, this enables a current phase to be delayed with respect to a voltage phase, thereby achieving ZCS.Type: ApplicationFiled: November 5, 2009Publication date: September 15, 2011Applicants: HITACHI MEDICAL CORPORATION, Institute of National Colleges of Technology, Japan, National University Corporation Nagaoka University of TechnologyInventors: Mina Ogawa, Itaru Ando, Kiyoshi Ohishi, Shoutaro Shindo
-
Patent number: 8017256Abstract: A dual-power-supply system uses both a fuel cell and a chargeable secondary battery. A differential voltage adding unit adds a differential voltage between the voltage of the fuel cell and a necessary target output voltage to the voltage of the fuel cell by using the secondary battery, thereby obtaining an output voltage of the dual-power-supply system. A control unit detects the output voltage, and controls the differential voltage adding unit such that the output voltage is equal to the target output voltage.Type: GrantFiled: May 12, 2010Date of Patent: September 13, 2011Assignees: Olympus Corporation, National University Corporation Nagaoka University of TechnologyInventors: Toshio Horiguchi, Junichi Itoh, Kouji Orikawa
-
Protective gas composition for magnesium/magnesium alloy production and combustion preventing method
Patent number: 7988762Abstract: There is provided a protective gas composition for preventing combustion of a molten magnesium/magnesium alloy, containing a compound selected from the group consisting of 1,1,1,3,3-pentafluoropropane (HFC-245fa), 1,3,3,3-tetrafluoropropene (OHFC-1234ze), methyl 1,1,2,2-tetrafluoroethyl ether (HFE-254pc), which are fluorine-containing organic compounds, and mixtures thereof; and a carrier gas.Type: GrantFiled: November 1, 2006Date of Patent: August 2, 2011Assignees: Central Glass Company, Limited, Nagaoka University of TechnologyInventors: Shigeharu Kamado, Hayato Okumura, Daisuke Yamagata, Yasuo Hibino, Fuyuhiko Sakyu -
Patent number: 7982426Abstract: An electric power system comprises an AC motor, a first DC voltage unit, an inverter as a power converter, being connected between the AC motor and first DC voltage unit, for exchanging power between these two components; and a controlled DC power supply which is connected between an arbitrary spot of a coil of the AC motor and a positive or negative electrode of the first DC voltage unit and which connects at least one semiconductor switching element and a battery as a second DC voltage unit in series.Type: GrantFiled: March 9, 2007Date of Patent: July 19, 2011Assignees: National University Corporation, Nagaoka University of Technology, Fuji Electric Holdings Co., Ltd.Inventors: Junichi Itoh, Akio Toba, Kouetsu Fujita
-
Publication number: 20110166301Abstract: The invention provides biodegradable polyesters, polyurethanes, comprising 3-carboxymuconolactone as a structural unit, 3-carboxymuconolactone esters and a process for their production. Polyesters comprising a repeating unit represented by the following formula (I): [wherein R represents a hydrocarbon-based divalent residue which, in the structure, optionally contains a heteroatom without an active hydrogen], polyurethanes comprising the polyester structure; 3-carboxymuconolactone esters; and a process for their production.Type: ApplicationFiled: September 9, 2009Publication date: July 7, 2011Applicants: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, NAGAOKA UNIVERSITY OF TECHNOLOGY, FORESTRY AND FOREST PRODUCTS RESEARCH INSTITUTEInventors: Hiroaki Takashima, Yusuke Yamamoto, Kohei Mase, Toshihisa Shimo, Tomokuni Abe, Kiyotaka Shigehara, Yoshihiro Katayama, Eiji Masai, Masaya Nakamura, Yuichiro Otsuka, Seiji Ohara
-
Patent number: 7972743Abstract: A membrane-electrode assembly (MEA) 1 has a solid polymer electrolyte membrane 2. The membrane 2 has ion-conductive domains 3 and non-ion-conductive domains 4 and an electrode catalyst 5. The electrode catalyst 5 is present selectively on surface sites of the solid polymer electrolyte membrane 2 which corresponds to the ion-conductive domains 3 rather than surface sites of the membrane 2 which corresponds to the non-ion-conductive domains 4. A spray liquid containing the electrode catalyst and a solvent is applied onto a surface of the membrane 2 by electrostatic spray deposition to selectively adhere the electrode catalyst 5 on the surface sites of the membrane 2 which corresponds to the ion-conductive domains 3. The membrane 2 is preferably subjected to a hydrophilization treatment before being sprayed with the spray liquid.Type: GrantFiled: February 25, 2005Date of Patent: July 5, 2011Assignee: Nagaoka University of TechnologyInventors: Minoru Umeda, Akifumi Yamada, Isamu Uchida
-
Publication number: 20110160039Abstract: There is provided a zeolite membrane which is thinner than a conventional membrane and which has improved permeability and a method for manufacturing the zeolite membrane. The method includes a surface layer forming step for forming a surface layer by attaching a low polar polymer on a first surface of a porous substrate to cover the surface, a filling step for filling a masking polymer into pores in the porous substrate from a surface different from the first surface of the porous substrate up to the surface layer by impregnating the porous substrate with the masking polymer and solidifying the masking polymer, and a surface layer removing step for removing the surface layer. After the surface layer removing step, a zeolite membrane is formed on the first surface of the porous substrate.Type: ApplicationFiled: December 13, 2010Publication date: June 30, 2011Applicants: NGK Insulators, Ltd., Nagaoka University of TechnologyInventors: Shuji HIMENO, Teruaki Takeuchi, Shuichi Yoshida, Kiyoshi Araki, Toshihiro Tomita
-
Publication number: 20110130511Abstract: A modified natural rubber particle having carbon-carbon double bonds assigned to multifunctional vinyl monomers graft-copolymerized onto the surface of the modified natural rubber particle, which is prepared by graft-copolymerization of multifunctional vinyl monomers having two or more carbon-carbon double bonds onto natural rubber particles or deproteinized natural rubber particles. One of the methods for producing a modified natural rubber particle includes the steps of: forming inclusion complex of the multifunctional vinyl monomers having two or more carbon-carbon double bonds with a guest-protecting agent to protect at least one of the double bonds of the multifunctional vinyl monomers; graft-copolymerizing the resulting inclusion complex onto natural rubber particles or deproteinized natural rubber particles; and deprotecting the protected double bonds by removing the guest-protecting agent from the obtained graft-copolymer.Type: ApplicationFiled: July 9, 2009Publication date: June 2, 2011Applicants: TOKAI RUBBER INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION NAGAOKA UNIVERSITY OF TECHNOLOGYInventors: Osamu Wakisaka, Akihiro Shibahara, Seiichi Kawahara, Yoshimasa Yamamoto, Nanthaporn Pukkate
-
Publication number: 20110054638Abstract: Providing a remote control technique capable of realizing the achievement of constraints and the certain following of a target value even with a network in which delay, loss, distortion, or the like may occur. In a remote control system, an area setting unit of a client-side control unit sets at least two areas representative of a group of states of an target object, which changes over time by feedback control. A state-evaluation information sending unit sends, to the host-side control unit, state evaluation information obtained by evaluating the state of the target object based on the area set by the area setting unit. A target value setting unit of the host-side control unit sets a target value such that the state of the target object changes in the area set by the area setting units. Moreover, a target value updating unit updates the target value based on the state evaluation information received from the client-side control unit.Type: ApplicationFiled: May 30, 2007Publication date: March 3, 2011Applicants: National University Corporation Nara Institute of Science and Technology, National University Corporation Nagaoka University of TechnologyInventors: Kiminao Kogiso, Kenji Sugimoto, Kenji Hirata
-
Planar elongational viscosity measuring method and planar elongational viscosity measuring apparatus
Patent number: 7890275Abstract: A planar elongational viscosity measuring method and apparatus which can advance analysis of planar elongational viscosities for high-viscosity and low-viscosity fluids. As a bomb-shell like bob 2 is pushed into a container 6, a non-Newtonian fluid 9 reaches a planar elongation state in a side space G, counterforce F applied to the bomb-shell like bob 2 at this time is measured, planar elongation stress ? is calculated using the counterforce F and conditions input by a user based on push-up force, the counterforce F, and the horizontal cross-sectional area of the side space G, and the planar elongation stress is divided by a planar elongation speed ??, thereby acquiring a planar elongational viscosity ?PE.Type: GrantFiled: December 27, 2006Date of Patent: February 15, 2011Assignee: Nagaoka University of TechnologyInventors: Tsutomu Takahashi, Masataka Shirakashi, Toshihiro Kawano -
Publication number: 20100323108Abstract: A disclosed deposition apparatus includes a catalyst reaction apparatus including an introduction part that introduces a first source gas, a catalyst container that contains a catalyst that produces reactive gas from the first source gas introduced from the introduction part, and a reactive gas ejection part that ejects the reactive gas from the catalyst container; a reactive gas separator that allows the reactive gas ejected from the reactive gas ejection part to go therethrough; a substrate supporting part that supports a substrate; and a supplying part that supplies a second source gas that reacts with the reactive gas that passes through the reactive gas separator, thereby depositing a film on the substrate.Type: ApplicationFiled: November 21, 2008Publication date: December 23, 2010Applicants: NATIONAL UNIVERSITY CORPORATION NAGAOKA UNIVERSITY OF TECHNOLOGY, TOKYO ELECTRON LIMITEDInventors: Kanji Yasui, Hiroshi Nishiyama, Yasunobu Inoue, Hitoshi Miura
-
Patent number: 7833924Abstract: There is provided an yttrium oxide-containing material with excellent mechanical characteristics. The yttrium oxide-containing material becomes strong by adding silicon carbide (SiC) and yttrium fluoride (YF3) to yttrium oxide (Y2O3). Accordingly, the yield, handling and reliability can be improved when this strengthened yttrium oxide-containing material is applied to and used for components of semiconductor manufacturing equipment.Type: GrantFiled: March 7, 2008Date of Patent: November 16, 2010Assignees: NGK Insulators, Ltd., Nagaoka University of TechnologyInventors: Yoshimasa Kobayashi, Yuji Katsuda, Hiroaki Sakai, Koichi Niihara, Tadachika Nakayama
-
Publication number: 20100274504Abstract: There is provided a fluid analysis method and its device which are capable of easily analyzing a normal stress difference of a low-viscosity fluid in addition to that of a high-viscosity fluid. A shearing fluidity is applied to a non-Newtonian fluid within a lateral-side gap by pushing a cylindrical bob into a container. At that time, reactive force applied to the cylindrical bob is measured. Then, by practicing an arithmetic process in a given form using the reactive force and each of conditions input by a user, the normal stress difference of the low-viscosity non-Newtonian fluid which is hard to form in a solid state can be certainly determined. Thus, with respect to the low-viscosity non-Newtonian fluid in addition to the high-viscosity non-Newtonian fluid, the normal stress difference can be easily analyzed.Type: ApplicationFiled: December 27, 2006Publication date: October 28, 2010Applicant: NAGAOKA UNIVERSITY OF TECHNOLOGYInventors: Tsutomu Takahashi, Masataka Shirakashi, Toshihiro Kawano
-
Protective Gas Composition For Magnesium/Magnesium Alloy Production And Combustion Preventing Method
Publication number: 20100257976Abstract: There is provided a protective gas composition for preventing combustion of a molten magnesium/magnesium alloy, containing a compound selected from the group consisting of 1,1,1,3,3-pentafluoropropane (HFC-245fa), 1,3,3,3-tetrafluoropropene (OHFC-1234ze), methyl 1,1,2,2-tetrafluoroethyl ether (HFE-254pc), which are fluorine-containing organic compounds, and mixtures thereof; and a carrier gas.Type: ApplicationFiled: November 1, 2006Publication date: October 14, 2010Applicant: NAGAOKA UNIVERSITY OF TECHNOLOGYInventors: Shigeharu Kamado, Hayato Okumura, Daisuke Yamagata, Yasuo Hibino, Fuyuhiko Sakyu