Patents Assigned to National University Corporation Toyohashi University of Technology
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Patent number: 9335287Abstract: Contacting a pair of electrodes with soil, applying an alternate current input electric signal to one of the pair of electrodes, comparing a phase of an output electric signal from the other of the pair electrodes with a phase of the input electric signal; and determining the concentration of the ionic solute included in the solvent according to a difference of the phases. The difference of the phases is not dependent on the water content. An electrical conductivity is proportional to a water content and ion concentration, thereby, the water content of soil is available according to the measured electrical conductivity, while determining the ion concentration.Type: GrantFiled: June 14, 2011Date of Patent: May 10, 2016Assignee: National University Corporation Toyohashi University of TechnologyInventors: Masato Futagawa, Kazuaki Sawada
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Publication number: 20160096222Abstract: [Problem to be solved] To provide a pouring control method, for a ladle-tilting automatic pouring device, where the operation for identification of the parameters, which normally takes much time to complete, can take less time and the device can pour with a high degree of precision by sequentially updating pouring model parameters according to the pouring situation.Type: ApplicationFiled: March 27, 2014Publication date: April 7, 2016Applicants: NATIONAL UNIVERSITY CORPORATON UNIVERSITY OF YAMANASHI, SINTOKOGIO, LTD., NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIVERSITY OF TECHNOLOGYInventors: Yoshiyuki NODA, Takaaki TSUJI, Makio SUZUKI, Kazuhiko TERASHIMA
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Patent number: 9248498Abstract: A method for controlling the respective input voltages transmitted to a servomotor that tilts the ladle such that the molten metal that flows from the ladle drops accurately into the pouring gate in the mold, a servomotor that moves the ladle back and forth, and a servomotor that moves the ladle up and down, by using a computer. In the method, a mathematical model of the area on which the molten metal that flows from the ladle will drop is produced, and then the inverse problem of the produced mathematical model is solved. In view of the effect of a contracted flow, the position on which molten metal drops is estimated by the estimating device for estimating the pouring rate and the estimating device for estimating the position on which molten metal will drop.Type: GrantFiled: January 26, 2011Date of Patent: February 2, 2016Assignees: SINTOKOGIO, LTD., NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIVERSITY OF TECHNOLOGYInventors: Yoshiyuki Noda, Kazuhiko Terashima, Ryusuke Fukushima, Makio Suzuki, Kazuhiro Ota, Hiroyasu Makino
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Publication number: 20150355127Abstract: The purpose of the present invention is to measure pH of a sample with high accuracy in a pH sensor array, without the use of a glass reference electrode. Each time that a sample is measured, the potential Vrm of the sample is identified, and the identified potential Vrm is used to calculate the pH. The outputs Voi1 and Voi2 of a first element and a second element located near one another in a sensor array are represented as follows. Voi1=Si1×pHi1+Gi1×Vrm+Ci1, Voi2=Si2×pHi2+Gi2×Vrm+Ci2. Voi is the output of the element, Si and Gi are sensitivity coefficients, and Ci is a constant, these values having been derived in advance. Here, where the potential Vrm is constant, and the elements located near one another are presumed to be at equal pH (pHi1=pHi2), the potential Vrm is identified by solving a linear equation with two unknowns.Type: ApplicationFiled: January 7, 2014Publication date: December 10, 2015Applicant: National University Corporation Toyohashi University of TechnologyInventors: Fumihiro Dasai, Kazuaki Sawada, Masato Futagawa
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Patent number: 9154052Abstract: 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: GrantFiled: March 28, 2013Date of Patent: October 6, 2015Assignees: Sumitomo Electric Industries, Ltd., National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGYInventors: Kazuhiro Fujikawa, Satoshi Hatsukawa, Nobuo Shiga, Takashi Ohira
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Patent number: 9115251Abstract: 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: GrantFiled: May 24, 2012Date of Patent: August 25, 2015Assignee: NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIVERSITY OF TECHNOLOGYInventors: Atsunori Matsuda, Song-Yul Oh, Toshihiro Yoshida, Go Kawamura, Junichi Hamagami, Mototsugu Sakai
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Patent number: 9097693Abstract: 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: GrantFiled: March 14, 2006Date of Patent: August 4, 2015Assignees: SHINWA CHEMICAL INDUSTRIES, LTD., NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIVERSITY OF TECHNOLOGY, NIPPON MEDICAL SCHOOL FOUNDATIONInventors: Hiroo Wada, Kiyokatsu Jinno, Yoshihiro Saito, Youkichi Ohno, Makiko Hayashida
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Publication number: 20150190840Abstract: 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: ApplicationFiled: March 29, 2012Publication date: July 9, 2015Applicant: National University Corporation Toyohashi University of TechnologyInventors: Hiroyuki Muto, Norio Hakiri, Atsunori Matsuda, Go Kawamura
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Patent number: 9058439Abstract: 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: GrantFiled: May 1, 2009Date of Patent: June 16, 2015Assignees: Dunlop Sports Co. Ltd., National University Corporation Toyohashi University of TechnologyInventors: Hyoungchol Kim, Masahide Onuki, Kaname Yamada, Shozo Kawamura
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Patent number: 9007738Abstract: 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: GrantFiled: October 31, 2012Date of Patent: April 14, 2015Assignees: Sumitomo Electric Industries, Ltd., National University Corporation Toyohashi University of TechnologyInventors: Kazuhiro Fujikawa, Nobuo Shiga, Takashi Ohira, Kazuyuki Wada, Tuya Wuren
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Publication number: 20150000860Abstract: [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: ApplicationFiled: February 22, 2013Publication date: January 1, 2015Applicants: Sintokogio, Ltd., National University Corporation Toyohashi University of TechnologyInventors: Makio Suzuki, Kazuhiko Terashima, Atsushi Ito, Yoshiyuki Noda
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Patent number: 8917142Abstract: 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: GrantFiled: October 26, 2012Date of Patent: December 23, 2014Assignees: Sumitomo Electric Industries, Ltd., National University Corporation Toyohashi University of TechnologyInventors: Satoshi Hatsukawa, Kazuhiro Fujikawa, Takashi Tsuno, Nobuo Shiga, Takashi Ohira, Kazuyuki Wada, Tuya Wuren, Kotaro Tanimura
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Patent number: 8878604Abstract: 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: GrantFiled: March 28, 2011Date of Patent: November 4, 2014Assignees: Sumitomo Electric Industries, Ltd., National University Corporation Toyohashi University of TechnologyInventors: Takashi Ohira, Kazuyuki Wada, Mitsutoshi Nakata, Kazushi Sawada, Satoshi Hatsukawa, Nobuo Shiga, Kazuhiro Fujikawa
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Patent number: 8875960Abstract: 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: GrantFiled: March 31, 2010Date of Patent: November 4, 2014Assignees: Sintokogio, Ltd., National University Corporation Toyohashi University of TechnologyInventors: Kazuhiko Terashima, Yoshiyuki Noda, Makio Suzuki, Hiroyasu Makino, Kazuhiro Ota
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Publication number: 20140315046Abstract: 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: ApplicationFiled: September 18, 2012Publication date: October 23, 2014Applicant: National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGYInventors: Naoko Yoshida, Akira Hiraishi, Adarsh Sandhu, Seiji Iwasa, Hiroshi Okada, Ryugo Tero, Yuji Nagao
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Publication number: 20140307064Abstract: 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: ApplicationFiled: September 13, 2012Publication date: October 16, 2014Applicants: National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGY, HOLYMINE CORPORATIONInventors: Hideyoshi Horimai, Mitsuteru Inoue, Pang Boey Lim
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Publication number: 20140253986Abstract: 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: ApplicationFiled: May 31, 2012Publication date: September 11, 2014Applicant: NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIVERSITY OF TECHNOLOGYInventors: Mitsuteru Inoue, Hiroyuki Takagi
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Publication number: 20140200842Abstract: 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: ApplicationFiled: August 9, 2012Publication date: July 17, 2014Applicant: National University Corporation Toyohashi University of TechnologyInventors: Fumihiro Dasai, Kazuaki Sawada, Hirokazu Nakazawa
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Patent number: 8766699Abstract: 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: GrantFiled: June 6, 2012Date of Patent: July 1, 2014Assignees: Sumitomo Electric Industries, Ltd., National University Corporation Toyohashi University of TechnologyInventors: Kazuhiro Fujikawa, Nobuo Shiga, Takashi Ohira, Kazuyuki Wada, Hiroshi Ishioka
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Patent number: 8760223Abstract: 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: GrantFiled: June 6, 2012Date of Patent: June 24, 2014Assignees: Sumitomo Electric Industries, Ltd., National University Corporation Toyohashi University of TechnologyInventors: Kazuhiro Fujikawa, Nobuo Shiga, Takashi Ohira, Kazuyuki Wada, Hiroshi Ishioka