Patents Assigned to National University Corporation Toyohashi University of Technology
  • Patent number: 9115251
    Abstract: A composite membrane that can be used as an electrolyte membrane of a fuel cell is produced from a resin material that contains at least polybenzimidazole and from a composite material that is produced from of hydrogen sulfate and heteropoly acid. The composite membrane has a basic structure of an aromatic hydrocarbon that does not contain fluorine and has good efficiency, even at a low doping level, so it can be used for the electrolyte membrane of a medium temperature dry fuel cell. Phosphoric acid is doped into the composite membrane. Characteristics of the relationship between output current density and output voltage for an electrolyte membrane that is made from the created composite membrane (a specimen 4) are better than for a specimen 8, in which the amount of phosphoric acid doping is equivalent.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: August 25, 2015
    Assignee: NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIVERSITY OF TECHNOLOGY
    Inventors: Atsunori Matsuda, Song-Yul Oh, Toshihiro Yoshida, Go Kawamura, Junichi Hamagami, Mototsugu Sakai
  • Patent number: 9097693
    Abstract: The invention provides a method for simple, rapid and inexpensive analysis of drugs such as nicotine and other drugs which are accumulated in biological samples of addictive drugger of tobacco, stimulant drug and the like. The method comprises the steps of introducing the biological sample into an injection needle, inserting the needle into an injector of a chromatograph and injecting a carrier into the needle to conduct chromatography treatment.
    Type: Grant
    Filed: March 14, 2006
    Date of Patent: August 4, 2015
    Assignees: SHINWA CHEMICAL INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIVERSITY OF TECHNOLOGY, NIPPON MEDICAL SCHOOL FOUNDATION
    Inventors: Hiroo Wada, Kiyokatsu Jinno, Yoshihiro Saito, Youkichi Ohno, Makiko Hayashida
  • Publication number: 20150190840
    Abstract: A device and process for producing composite particles capable of adding a control agent for controlling a surface charge of particles such as a polymer electrolyte without being in excess or short. The production device includes a reservoir tank holding liquid containing either a first group or a second group of particles; a dispersion state measuring mechanism measuring a dispersion state of the particles in the liquid held in the reservoir tank; a dispersion state storage storing the dispersion state measured by the dispersion state measuring mechanism when a control agent for controlling a surface charge of the particles contained in the liquid in the reservoir tank is added into the reservoir tank; and an information output outputting information indicating that the dispersion state of the particles in the liquid in the reservoir tank is a desired state, based on the dispersion state stored in the dispersion state storage.
    Type: Application
    Filed: March 29, 2012
    Publication date: July 9, 2015
    Applicant: National University Corporation Toyohashi University of Technology
    Inventors: Hiroyuki Muto, Norio Hakiri, Atsunori Matsuda, Go Kawamura
  • Patent number: 9058439
    Abstract: A golf ball 2 has numerous craters 8 on its surface. The craters 8 are arranged randomly. Of the surface of the golf ball 2, a part other than the craters 8 is a land 10. By the craters 8 and the land 10, a rugged pattern is formed on the golf ball 2. A process for designing the rugged pattern includes the steps of: (1) assuming a plurality of states; (2) assuming a large number of cells on a spherical surface; (3) deciding an initial state of each cell; (4) determining whether or not to change a state of the each cell based on states of a plurality of cells located adjacent to the each cell; (5) updating the state of the each cell based on the determination; and (6) assigning a land 10 or a recess to the each cell according to the state of the each cell.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: June 16, 2015
    Assignees: Dunlop Sports Co. Ltd., National University Corporation Toyohashi University of Technology
    Inventors: Hyoungchol Kim, Masahide Onuki, Kaname Yamada, Shozo Kawamura
  • Patent number: 9007738
    Abstract: Provided is a transistor protection circuit capable of appropriately protecting a transistor even when a switching frequency is high. A transistor protection circuit according to an embodiment of the present invention is a transistor protection circuit for protecting a voltage-driven transistor that is switch-controlled by the application of a high-potential-side voltage or low-potential-side voltage of a power supply to a gate terminal of the transistor by a drive circuit. The transistor protection circuit has a power supply controller that gradually lowers the high-potential-side voltage of the power supply upon receiving a protection command for executing protection of the transistor.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: April 14, 2015
    Assignees: Sumitomo Electric Industries, Ltd., National University Corporation Toyohashi University of Technology
    Inventors: Kazuhiro Fujikawa, Nobuo Shiga, Takashi Ohira, Kazuyuki Wada, Tuya Wuren
  • Publication number: 20150000860
    Abstract: [Problem to Be Solved] A pouring control method for controlling an automatic pouring device with a tilting-type ladle is provided. By the method, a lip of a pouring ladle approaches a sprue of a mold without striking any object located within the range of its movement. Also, by the method, the molten metal that runs out of the ladle can accurately fill the mold.
    Type: Application
    Filed: February 22, 2013
    Publication date: January 1, 2015
    Applicants: Sintokogio, Ltd., National University Corporation Toyohashi University of Technology
    Inventors: Makio Suzuki, Kazuhiko Terashima, Atsushi Ito, Yoshiyuki Noda
  • Patent number: 8917142
    Abstract: A switching circuit 33 comprises a connection circuit cascade-connecting control terminals for controlling switching of n number of transistors M1-Mn via n?1 number of coils L1 respectively (n is an integer equal to or more than 2; and coils L3 respectively connected between one end of each of the transistors M1-Mn and other end of a coil L2, one end of the coil L2 being electrically connected to a DC power source. The transistors M1-Mn is sequentially switched with PWM signals inputted to an input terminal of the connection circuit. The switching circuit 33 further comprises a transistor M0 inserted at the one end or the other end of the coil L2 in cascade-connection.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: December 23, 2014
    Assignees: Sumitomo Electric Industries, Ltd., National University Corporation Toyohashi University of Technology
    Inventors: Satoshi Hatsukawa, Kazuhiro Fujikawa, Takashi Tsuno, Nobuo Shiga, Takashi Ohira, Kazuyuki Wada, Tuya Wuren, Kotaro Tanimura
  • Patent number: 8875960
    Abstract: A method of automatically pouring molten metal from a ladle into a mold by tilting the ladle. In the method, the height of molten metal located above a molten metal outlet and the weight of molten metal flowing out of the ladle are estimated using an expanded Kalman filter on the basis of: the weight of the molten metal flowing out of the ladle, said weight being measured using a load cell; the voltage inputted to a servo motor; the angle of tilt of the ladle measured by a rotary encoder; and the position of the ladle in the lifting and lowering direction thereof. The sum of the weight of the molten metal flowing out of the ladle when the ladle is tilted rearward, said weight being estimated from the angle of tilt of the ladle and the height of the molten metal located above the molten metal outlet estimated by the expanded Kalman filter, and the weight of the molten metal flowing out of the ladle estimated by the expanded Kalman filter are estimated as the final weight of outflowing molten metal.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: November 4, 2014
    Assignees: Sintokogio, Ltd., National University Corporation Toyohashi University of Technology
    Inventors: Kazuhiko Terashima, Yoshiyuki Noda, Makio Suzuki, Hiroyasu Makino, Kazuhiro Ota
  • Patent number: 8878604
    Abstract: A switching circuit according to one embodiment has: N switching elements; a connection circuit including N?1 first inductance elements that are connected in series; a second inductance element; and N third inductance elements. Control terminals of the N switching elements are connected to ends of the connection circuit and connection contacts, respectively. One end of the second inductance element is connected to a power supply. The N third inductance elements electrically connects one ends of the N switching elements and the other end of the second inductance element with each other, respectively.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: November 4, 2014
    Assignees: Sumitomo Electric Industries, Ltd., National University Corporation Toyohashi University of Technology
    Inventors: Takashi Ohira, Kazuyuki Wada, Mitsutoshi Nakata, Kazushi Sawada, Satoshi Hatsukawa, Nobuo Shiga, Kazuhiro Fujikawa
  • Publication number: 20140315046
    Abstract: Provided are a microbial power generation device, an electrode for the microbial power generation device, preparing methods of the same, an electric power producing method using microbes and a selective culture method of the microbes used for the electric power producing method capable of improving electric power production capacity and of suppressing power generation cost. In a microbial power generation device (1), microbes (reducing microbes) that reduce graphene oxide are enriched among microbes inhabiting wastewater, slurry, activated sludge and the like. Therefore, the graphene oxide is reduced by the reducing microbes, so the graphene is produced. Electrons produced by the microbes can be transmitted to a negative electrode (14) via the produced graphene. As a result, the electric power production capacity can be improved and the power generation can be performed at a low cost.
    Type: Application
    Filed: September 18, 2012
    Publication date: October 23, 2014
    Applicant: National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGY
    Inventors: Naoko Yoshida, Akira Hiraishi, Adarsh Sandhu, Seiji Iwasa, Hiroshi Okada, Ryugo Tero, Yuji Nagao
  • Publication number: 20140307064
    Abstract: A three-dimensional image projector includes: a conversion optical system including a plate-shaped first optical member that has an incidence surface is incident, and an emission surface and that converts a traveling direction of the image light so as to form a predetermined angle between the emission surface and an emission direction of the image light on the emission surface; a rotary driving unit that drives the conversion optical system so as to rotate along the emission surface with a predetermined point on the emission surface as the center of rotation; and an image projection unit that is erected along a rotation axis, converts the traveling direction of the image light emitted from the conversion optical system into a first direction along a surface crossing the rotation axis, and diffuses the image light emitted from the conversion optical system in a second direction along the rotation axis.
    Type: Application
    Filed: September 13, 2012
    Publication date: October 16, 2014
    Applicants: National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGY, HOLYMINE CORPORATION
    Inventors: Hideyoshi Horimai, Mitsuteru Inoue, Pang Boey Lim
  • Publication number: 20140253986
    Abstract: Submitted is an image photography play method which is suited to playing a stereoscopic video. The image photography method comprises: a step of forming a hologram pattern from a reference light and a subject light; a step of digitally processing the obtained hologram pattern; a step of writing the digitized hologram pattern as a magnetized vector pattern to a spatial lighting modulator which is formed from a magneto-optical material; and a step of inputting linearly polarized light into the spatial lighting modulator and playing an image according to the digitized hologram pattern.
    Type: Application
    Filed: May 31, 2012
    Publication date: September 11, 2014
    Applicant: NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIVERSITY OF TECHNOLOGY
    Inventors: Mitsuteru Inoue, Hiroyuki Takagi
  • Publication number: 20140200842
    Abstract: Provided is a device adapted for detecting chemical and physical phenomena and suitable for high integration, and a method for controlling the detection device. When a plurality of pH-detecting devices are used, a variation in sensitivity occurs in each of the sensing units. The variation in sensitivity can be calibrated using a simple method. The amount of charge (output signal) delivered by each of the sensing units to a standard solution is determined, and the difference between the delivered charge amount and a standard charge amount (standard output signal) delivered by a standard sensing unit is determined. The capacity of the potential well of the sensing unit is changed, or the potential of a TG unit when a charge is delivered is changed, so as to cancel out the difference.
    Type: Application
    Filed: August 9, 2012
    Publication date: July 17, 2014
    Applicant: National University Corporation Toyohashi University of Technology
    Inventors: Fumihiro Dasai, Kazuaki Sawada, Hirokazu Nakazawa
  • Patent number: 8766699
    Abstract: A switching circuit according to one embodiment includes first to fourth semiconductor switch elements. A pulse-like signal is applied to each input terminal of the switch elements such that when the first and fourth switch elements are in an ON (OFF) state, the remaining switch elements are in an OFF (ON) state. The switching circuit includes first and second capacitance elements. The first capacitance elements connected between an output terminal of the second semiconductor switch element and the second capacitance elements connected between an input terminal of the second semiconductor switch element and an output terminal of the fourth semiconductor switch element has a capacitance to reduce a parasitic capacitance between the input and output terminals of each of the fourth and second switch elements at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse-like signal.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: July 1, 2014
    Assignees: Sumitomo Electric Industries, Ltd., National University Corporation Toyohashi University of Technology
    Inventors: Kazuhiro Fujikawa, Nobuo Shiga, Takashi Ohira, Kazuyuki Wada, Hiroshi Ishioka
  • Patent number: 8760223
    Abstract: A switching circuit according to one embodiment is a switching circuit including at least one semiconductor switch element having an input, output, and a common terminals, a pulse-like signal being applied between the input and common terminals to switch a current between the output and common terminals. The switching circuit further includes a capacitance suppression element section connected at least one of between the input and output terminals, between the input terminal common terminals, and between the output and common terminals. The capacitance suppression element section reduces a parasitic capacitance between the terminals of the semiconductor switch element where the capacitance suppression element section is connected to less than that obtained when the capacitance suppression element section is not connected at a frequency N times (N is an integer of 1 or more) as high as a clock frequency of the pulse-like signal.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: June 24, 2014
    Assignees: Sumitomo Electric Industries, Ltd., National University Corporation Toyohashi University of Technology
    Inventors: Kazuhiro Fujikawa, Nobuo Shiga, Takashi Ohira, Kazuyuki Wada, Hiroshi Ishioka
  • Publication number: 20140139231
    Abstract: Provided are a device for detecting chemical and physical phenomenon suitable for high integration, and a method therefor. Rather than using a TG section signal to select pixels that require charge measurement, the on-off timing (the timing for moving the charge from a sensing section to an FD section) of the TG section is harmonized for all pixels, and the release or injection of the charge to the sensing section is separately controlled, whereby the charge is held only in sensing sections of pixels that require charge measurement, and the charge is emptied in sensing sections of pixels that do not require charge measurement. In this state, the TG section of all pixels can be opened at the same time, whereby the charge is transferred to the FD section from only the sensing sections holding a charge, and the charge level of the pixel is detected.
    Type: Application
    Filed: July 13, 2012
    Publication date: May 22, 2014
    Applicant: National University Corporation Toyohashi University of Technology
    Inventors: Fumihiro Dasai, Kazuaki Sawada
  • Patent number: 8626508
    Abstract: Provided are a speech search device, the search speed of which is very fast, the search performance of which is also excellent, and which performs fuzzy search, and a speech search method. Not only the fuzzy search is performed, but also the distance between phoneme discrimination features included in speech data is calculated to determine the similarity with respect to the speech using both a suffix array and dynamic programming, and an object to be searched for is narrowed by means of search keyword division based on a phoneme and search thresholds relative to a plurality of the divided search keywords, the object to be searched for is repeatedly searched for while increasing the search thresholds in order, and whether or not there is the keyword division is determined according to the length of the search keywords, thereby implementing speech search, the search speed of which is very fast and the search performance of which is also excellent.
    Type: Grant
    Filed: February 10, 2010
    Date of Patent: January 7, 2014
    Assignee: National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGY
    Inventors: Koichi Katsurada, Tsuneo Nitta, Shigeki Teshima
  • Patent number: 8590664
    Abstract: A drive mechanism includes a rotatable steering unit, a wheel supported by the steering unit, a drive member rotating about an axis extending along a center axis of the steering unit, an output shaft located at an offset position from the center axis of the steering unit and transmitting rotational force of the drive member to the wheel. The drive member includes a first drive unit driven in a forward rotation direction and a second drive unit driven in a reverse rotation direction and located coaxially with the first drive unit. The output shaft includes a first output unit to which driving force is transmitted from the first drive unit, and a second output unit to which driving force is transmitted from a conversion unit for converting rotation of the second drive unit, is restricted by both the output units, and transmits rotational force obtained from the output units to the wheel.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: November 26, 2013
    Assignee: National University Corporation Toyohashi University of Technology
    Inventors: Kazuhiko Terashima, Takashi Ono, Yuuki Ueno
  • Publication number: 20130279229
    Abstract: A power inverter circuit 1 is a bridge power inverter circuit comprising first and second switching elements 11, 12 sequentially connected in series between input terminals on higher and lower voltage sides and third and fourth switching elements 13, 14 sequentially connected in series between the input terminals on the higher and lower voltage sides and alternately turning on a set of the first and fourth switching elements 11, 14 and a set of the second and third switching elements 12, 14 so as to convert a DC power fed between the input terminals on the higher and lower voltage sides into an AC power. One of the sets of the first and third switching elements 11, 13 and the second and fourth switching elements 12, 14 is subjected to switching control at a frequency higher than that of the other.
    Type: Application
    Filed: March 28, 2013
    Publication date: October 24, 2013
    Applicants: National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGY, Sumitomo Electric Industries, Ltd.
    Inventors: Kazuhiro Fujikawa, Satoshi Hatsukawa, Nobuo Shiga, Takashi Ohira
  • Patent number: 8548542
    Abstract: There is provided a directly-coupled high-temperature superconductor SQUID magnetic sensor in a single thin film structure, which suppresses flux trapping or jumping generated in the sensor in a magnetic field, prevents the degradation in performance of the SQUID sensor, and operates stably with high sensitivity even in the magnetic field. The SQUID magnetic sensor including a bi-crystal substrate 1 having a bi-crystal grain boundary, pickup loops 7a-7d formed from a first high-temperature superconducting thin film on the bi-crystal substrate 1, and a SQUID ring 3 formed from the first high-temperature superconducting thin film on the bi-crystal grain boundary, directly connected with the pickup loops 7a-7d, wherein a plurality of pickup loops 7a-7d are disposed equally spaced from a bi-crystal grain boundary line 2 so as not to overlap with the bi-crystal grain boundary.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: October 1, 2013
    Assignee: National University Corporation, Toyohashi University of Technology
    Inventors: Yoshimi Hatsukade, Saburo Tanaka, Sho Kanai