Patents by Inventor Nobuo Takeda
Nobuo Takeda 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).
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Publication number: 20230236191Abstract: The virus test device encompasses a pseudo-receptor film having pseudo-receptors mimicking a structure of a host-cell receptor, which binds specifically to a target virus, a virus introducing-tube for sucking down an air-under-test (AUT) containing the target viruses, to compress the AUT into a high-speed air-flow of aerosols-under-test, concentrating the target viruses contained in the AUT, and to eject the high-speed air-flow to the pseudo-receptor film, a signal conditioner for converting physical signals, which represent alterations of physical states of the pseudo-receptor film ascribable to specific bindings of the pseudo-receptors with the target viruses, to electric signals.Type: ApplicationFiled: February 9, 2023Publication date: July 27, 2023Inventors: Kazushi YAMANAKA, Nobuo TAKEDA, Shingo AKAO, Yusuke TSUKAHARA, Toru OIZUMI, Takamitsu IWAYA
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Patent number: 11333631Abstract: System and method for measuring a gas concentration are provided. A ball sensor generates a collimated beam of a surface acoustic wave including fundamental wave of first frequency and harmonic wave of second frequency, which propagates through a orbital path on piezoelectric ball while passing through sensitive film to adsorb a target gas. Temperature control unit controls ball temperature of the ball sensor. Signal processing unit transmits a burst signal to sensor electrode of the ball sensor to excite the collimated beam, receives burst signals after the collimated beam has propagated a predetermined number of turns around the piezoelectric ball, and calculates the gas concentration and the ball temperature by first and second relative changes in delay times of the first and second frequencies, respectively, using waveform data of the burst signals.Type: GrantFiled: November 6, 2017Date of Patent: May 17, 2022Assignee: BALL WAVE INC.Inventors: Kazushi Yamanaka, Shingo Akao, Nobuo Takeda, Toshihiro Tsuji, Toru Oizumi, Yusuke Tsukahara
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Patent number: 11313836Abstract: A collimated beam (23) of a surface acoustic wave propagates on a piezoelectric substrate (22) while passing through sensitive film (25) to adsorb a sensing gas. Signal processing unit (40) transmits an exciting burst signal to sensor electrode (24) to excite the collimated beam (23), receives first and second returned burst signals after the collimated beam (23) has propagated, and calculates a target gas parameter by a target leakage factor of the background gas and a relation between reference gas parameters and reference leakage factors of reference gases, the leakage factor is provided by first and second attenuations of the first and second returned burst signals, respectively, using waveform data of the first and second returned burst signals.Type: GrantFiled: January 30, 2019Date of Patent: April 26, 2022Assignee: BALL WAVE INCInventors: Kazushi Yamanaka, Nobuo Takeda, Shingo Akao, Toshihiro Tsuji, Toru Oizumi, Hideyuki Fukushi, Tatsuhiro Okano, Nagisa Sato, Yusuke Tsukahara
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Patent number: 11307176Abstract: A standard-moisture generator includes a flow controller configured to control a flow of a gas, a dryer connected to the flow controller, configured to absorb water molecules in the gas and to generate a dry gas having a background moisture, a moisture cell connected to the dryer, configured to add an object moisture to the dry gas, and a delay member connected to the moisture cell, configured to pass the dry gas with a delay time depending on a concentration of the background moisture in the dry gas.Type: GrantFiled: February 12, 2019Date of Patent: April 19, 2022Assignee: Ball Wave Inc.Inventors: Yusuke Tsukahara, Osamu Hirayama, Nobuo Takeda, Toshihiro Tsuji, Kazushi Yamanaka, Toru Oizumi, Hideyuki Fukushi, Nagisa Sato, Shingo Akao, Tatsuhiro Okano
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Publication number: 20210372978Abstract: A system for calibrating a moisture sensor encompasses a processing unit (341). The processing unit (341) includes a reference data obtaining LCKT (345), a subject data obtaining LCKT (346) and a relationship calculating LCKT (347). The reference data obtaining LCKT (345) obtains reference data, after injecting water-vapor with known concentrations into an analyzer. The subject data obtaining LCKT (346) measures subject data indicating temporal variation of output-responses of a subject sensor element of the analyzer under test. The relationship calculating LCKT (347) compares the subject data with the reference data, and calculates relationships between the output-responses of the subject sensor element and the known concentrations.Type: ApplicationFiled: August 9, 2021Publication date: December 2, 2021Inventors: Takamitsu IWAYA, Shingo AKAO, Tatsuhiro OKANO, Nobuo TAKEDA, Toshihiro TSUJI, Toru OIZUMI, Hideyuki FUKUSHI, Maki SUGAWARA, Yusuke TSUKAHARA, Kazushi YAMANAKA
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Publication number: 20200400619Abstract: A standard-moisture generator includes a flow controller configured to control a flow of a gas, a dryer connected to the flow controller, configured to absorb water molecules in the gas and to generate a dry gas having a background moisture, a moisture cell connected to the dryer, configured to add an object moisture to the dry gas, and a delay member connected to the moisture cell, configured to pass the dry gas with a delay time depending on a concentration of the background moisture in the dry gas.Type: ApplicationFiled: February 12, 2019Publication date: December 24, 2020Applicant: Ball Wave Inc.Inventors: Yusuke TSUKAHARA, Osamu HIRAYAMA, Nobuo TAKEDA, Toshihiro TSUJI, Kazushi YAMANAKA, Toru OIZUMI, Hideyuki FUKUSHI, Nagisa SATO, Shingo AKAO, Tatsuhiro OKANO
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Publication number: 20200225190Abstract: A collimated beam (23) of a surface acoustic wave propagates on a piezoelectric substrate (22) while passing through sensitive film (25) to adsorb a sensing gas. Signal processing unit (40) transmits an exciting burst signal to sensor electrode (24) to excite the collimated beam (23), receives first and second returned burst signals after the collimated beam (23) has propagated, and calculates a target gas parameter by a target leakage factor of the background gas and a relation between reference gas parameters and reference leakage factors of reference gases, the leakage factor is provided by first and second attenuations of the first and second returned burst signals, respectively, using waveform data of the first and second returned burst signals.Type: ApplicationFiled: January 30, 2019Publication date: July 16, 2020Applicant: Ball Wave Inc.Inventors: Kazushi YAMANAKA, Nobuo TAKEDA, Shingo AKAO, Toshihiro TSUJI, Toru OIZUMI, Hideyuki FUKUSHI, Tatsuhiro OKANO, Nagisa SATO, Yusuke TSUKAHARA
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Patent number: 10518484Abstract: A bonded structure includes a first fiber part (12) and a second fiber part (14) arranged between a first member (10) and a second member (20). The first fiber part (12) and the second fiber part (14) are bonded so as to connect the first member (10) and the second member (20) to each other. The first fiber part (12) and the second fiber part (14) are arranged so that the fibers constituting the first fiber part (12) and the second fiber part (14) are oriented in a direction from the first member (10) toward the second member (20).Type: GrantFiled: February 9, 2016Date of Patent: December 31, 2019Assignee: The University of TokyoInventors: Shu Minakuchi, Nobuo Takeda
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Publication number: 20190360966Abstract: System and method for measuring a gas concentration are provided. A ball sensor generates a collimated beam of a surface acoustic wave including fundamental wave of first frequency and harmonic wave of second frequency, which propagates through a orbital path on piezoelectric ball while passing through sensitive film to adsorb a target gas. Temperature control unit controls ball temperature of the ball sensor. Signal processing unit transmits a burst signal to sensor electrode of the ball sensor to excite the collimated beam, receives burst signals after the collimated beam has propagated a predetermined number of turns around the piezoelectric ball, and calculates the gas concentration and the ball temperature by first and second relative changes in delay times of the first and second frequencies, respectively, using waveform data of the burst signals.Type: ApplicationFiled: November 6, 2017Publication date: November 28, 2019Applicant: Ball Wave Inc.Inventors: Kazushi YAMANAKA, Shingo AKAO, Nobuo TAKEDA, Toshihiro TSUJI, Toru OIZUMI, Yusuke TSUKAHARA
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Patent number: 10345515Abstract: The purpose of the present invention is to provide a bonded structure, a method for manufacturing the same, and a bonding state detection method which are capable of determining whether or not members are bonded together appropriately. A bonded structure 10 includes a laminated sheet 12A, a laminated sheet 12B, an adhesive 14 that bonds the laminated sheet 12A and the laminated sheet 12B together, and a distributed optical fiber 16 sandwiched between the laminated sheet 12A and the laminated sheet 12B. The cross-sectional shape of the distributed optical fiber 16 is deformed in accordance with the bonding state.Type: GrantFiled: January 6, 2016Date of Patent: July 9, 2019Assignees: MITSUBISHI HEAVY INDUSTRIES, LTD., THE UNIVERSITY OF TOKYOInventors: Nozomi Saito, Takayuki Shimizu, Toshio Abe, Shu Minakuchi, Nobuo Takeda, Yutaka Terada
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Patent number: 10145786Abstract: A bonded structure includes a first member, a second member, an adhesive that bonds the first member and the second member together, and an optical fiber sandwiched between the first member and the second member. When pressure is applied to the optical fiber only from a predetermined direction, the sectional shape of the optical fiber changes to an elliptical shape, so that birefringence occurs, whereby the shape of the light spectrum changes so as to have multiple peaks. The optical fiber is used as a sensor for detecting the bonding condition between the first member and the second member based on the birefringence.Type: GrantFiled: February 27, 2014Date of Patent: December 4, 2018Assignees: MISTUBISHI HEAVY INDUSTRIES, LTD., THE UNIVERSITY OF TOKYOInventors: Nozomi Saito, Takayuki Shimizu, Toshio Abe, Nobuo Takeda, Shu Minakuchi, Keigo Uhira
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Publication number: 20180036962Abstract: A bonded structure includes a first fiber part (12) and a second fiber part (14) arranged between a first member (10) and a second member (20). The first fiber part (12) and the second fiber part (14) are bonded so as to connect the first member (10) and the second member (20) to each other. The first fiber part (12) and the second fiber part (14) are arranged so that the fibers constituting the first fiber part (12) and the second fiber part (14) are oriented in a direction from the first member (10) toward the second member (20).Type: ApplicationFiled: February 9, 2016Publication date: February 8, 2018Inventors: Shu Minakuchi, Nobuo Takeda
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Publication number: 20170341340Abstract: The purpose of the present invention is to provide a bonded structure, a method for manufacturing the same, and a bonding state detection method which are capable of determining whether or not members are bonded together appropriately. A bonded structure 10 includes a laminated sheet 12A, a laminated sheet 12B, an adhesive 14 that bonds the laminated sheet 12A and the laminated sheet 12B together, and a distributed optical fiber 16 sandwiched between the laminated sheet 12A and the laminated sheet 12B. The cross-sectional shape of the distributed optical fiber 16 is deformed in accordance with the bonding state.Type: ApplicationFiled: January 6, 2016Publication date: November 30, 2017Inventors: Nozomi SAITO, Takayuki SHIMIZU, Toshio ABE, Shu MINAKUCHI, Nobuo TAKEDA, Yutaka TERADA
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Publication number: 20160069793Abstract: A bonded structure (10) includes a laminate (12A), a laminate (12B), an adhesive (14) that bonds together the laminate (12A) and the laminate (12B), and an optical fiber (16) sandwiched between the laminate (12A) and the laminate (12B). When a pressure is applied to the optical fiber (16) only from a predetermined direction, the sectional shape of the optical fiber (16) changes to an elliptical shape, so that birefringence occurs, whereby the shape of the light spectrum changes so as to have multiple (e.g., two) peaks. The optical fiber (16) is used as a sensor for detecting the bonding condition between the laminate (12A) and the laminate (12B) based on this birefringence. Thus, with the bonded structure 10, it is possible to determine whether members are bonded together appropriately.Type: ApplicationFiled: February 27, 2014Publication date: March 10, 2016Inventors: Nozomi SAITO, Takayuki SHIMIZU, Toshio ABE, Nobuo TAKEDA, Shu MINAKUCHI, Keigo UHIRA
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Patent number: 8746991Abstract: A method of repairing an embedded optical fiber of a composite material structure including an embedded optical fiber embedded in a composite material, includes removing a portion of the composite material including a damaged portion of the embedded optical fiber to form an opening portion; polishing an end surface of the embedded optical fiber exposed in the opening portion and an end surface of the composite material exposed in the opening portion; and performing position adjustment such that a core of the polished embedded optical fiber and a core of a replacement optical fiber are aligned with each other, butting the end surface of the embedded optical fiber and an end surface of the replacement optical fiber with each other, and connecting the end surface of the embedded optical fiber and the end surface of the replacement optical fiber together.Type: GrantFiled: June 1, 2012Date of Patent: June 10, 2014Assignees: The University of Tokyo, Kawasaki Jukogyo Kabushiki KaishaInventors: Nobuo Takeda, Shu Minakuchi, Tadahito Mizutani, Junichi Kimoto, Noriyoshi Hirano, Hiroaki Tsutsui
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Patent number: 8559018Abstract: A surface layer formed of a composite material is stacked on the surface of a core layer formed of a foam synthetic resin material, and an arrester portion is provided in an interface region between the surface layer and the core layer to prevent the progression of delamination between the surface layer and the core layer. Optical fibers with grating portions are embedded inside the arrester and along the surface layer, and the spectra of reflected light from the optical fibers are compared to detect the occurrence position of a crack between the surface layer and the core layer.Type: GrantFiled: August 25, 2008Date of Patent: October 15, 2013Assignees: The University of Tokyo, Kawasaki Jukogyo Kabushiki KaishaInventors: Nobuo Takeda, Yasuo Hirose
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Publication number: 20130094820Abstract: A method of repairing an embedded optical fiber of a composite material structure including an embedded optical fiber embedded in a composite material, includes removing a portion of the composite material including a damaged portion of the embedded optical fiber to form an opening portion; polishing an end surface of the embedded optical fiber exposed in the opening portion and an end surface of the composite material exposed in the opening portion; and performing position adjustment such that a core of the polished embedded optical fiber and a core of a replacement optical fiber are aligned with each other, butting the end surface of the embedded optical fiber and an end surface of the replacement optical fiber with each other, and connecting the end surface of the embedded optical fiber and the end surface of the replacement optical fiber together.Type: ApplicationFiled: June 1, 2012Publication date: April 18, 2013Applicants: KAWASAKI JUKOGYO KABUSHIKI KAISHA, THE UNIVERSITY OF TOKYOInventors: Nobuo TAKEDA, Shu MINAKUCHI, Tadahito MIZUTANI, Junichi KIMOTO, Noriyoshi HIRANO, Hiroaki TSUTSUI
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Publication number: 20110063626Abstract: A surface layer (4) formed of a composite material is stacked on the surface (3) of a core layer (2) formed of a foam synthetic resin material, and an arrester portion (5) is provided in an interface region between the surface layer (4) and the core layer (2) to prevent the progression of delamination between the surface layer (4) and the core layer (2). Optical fibers (6a, 6b) with grating portions are embedded inside the arrester (5) and along the surface layer (4), and the spectra (A, B) of reflected light from the optical fibers (6a, 6b) are compared to detect the occurrence position of a crack between the surface layer (4) and the core layer (2).Type: ApplicationFiled: August 25, 2008Publication date: March 17, 2011Applicants: The University of Tokyo, Kawasaki Jukogyo Kabushiki KaishaInventors: Nobuo Takeda, Yasuo Hirose
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Patent number: 7696471Abstract: Disclosed is an impact detection system including: an optical fiber including a plurality of sensor sections to reflect light, a wavelength band of the reflected light vibrates depending on an elastic wave propagating through a subject to be inspected; a light source to input light into the optical fiber; optical filters each connected to an output terminal of the optical fiber; and an arithmetic processing unit to detect the impact from output values of sensor sections, wherein the wavelength bands of the sensor sections in the optical fiber are distributed such that the vibration bands caused by the impact to be detected do not overlap with each other, and a pass band of the optical filter corresponding to one of the sensor sections is distributed in the vibration band caused by the detection object, and is distributed in both sides of a center of the wavelength band of the one sensor section.Type: GrantFiled: November 30, 2007Date of Patent: April 13, 2010Assignees: Fuji Jukogyo Kabushiki Kaisha, The University of TokyoInventors: Toshimichi Ogisu, Noritsugu Nakamura, Nobuo Takeda
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Patent number: 7633052Abstract: Disclosed an impact detection system including: three or more optical fiber sensors disposed respectively in different positions, the sensors not being in alignment with one another, in which the sensors each includes a core portion to have a grating portion formed therein, the grating portion has a plurality of gratings; light source; two or more optical filters having different pass bands to one another to an output light of one of the optical fiber sensors; and an arithmetic processing apparatus to perform arithmetic processing of output values of the three or more optical fiber sensors through the optical filters so as to specify a position on the subject where an impact is loaded, the output values being obtained when the impact is loaded on the subject.Type: GrantFiled: November 30, 2007Date of Patent: December 15, 2009Assignees: Fuji Jukogyo Kabushiki Kaisha, The University of TokyoInventors: Noritsugu Nakamura, Toshimichi Ogisu, Nobuo Takeda