Patents by Inventor Seiji Kamba
Seiji Kamba 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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Patent number: 8514403Abstract: A sample analysis method is provided for analyzing a sample having a permeability to terahertz radiation and accurately measure the composition, physical properties, mass and dimensions of a very small sample or a minute amount of sample by irradiating the sample with terahertz radiation. In the method, a reflective member is provided adjoining a first principal surface of the sample, an entrance member is provided adjoining a second principal surface of the sample, terahertz radiation is delivered from outside of entrance member towards the sample, and the sample is analyzed using an interference wave generated from a first-surface reflected wave at the interface between the first principal surface of the sample and the reflective member and a second-surface reflected wave at the interface between the second principal surface of the sample and the entrance member.Type: GrantFiled: April 14, 2011Date of Patent: August 20, 2013Assignees: Tohoku University, Murata Manufacturing Co., Ltd.Inventors: Yuichi Ogawa, Shinichiro Hayashi, Seiji Kamba, Takashi Kondo
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Publication number: 20130011935Abstract: A method of measuring characteristics of a specimen, the measuring method including the steps of bonding the specimen to a host molecule on a sensing device, emitting an electromagnetic wave of a particular frequency to the sensing device to which the specimen is bonded, measuring a frequency characteristic of the transmitted or reflected light, and measuring the characteristics of the specimen based on a change of the frequency characteristic, wherein an absorbance of the host molecule per unit quantity at the particular frequency is smaller than that of the specimen.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: Murata Manufacturing Co., Ltd.Inventors: Koji Tanaka, Seiji Kamba, Takashi Kondo, Kazuhiro Takigawa, Yoshiko Miura
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Patent number: 8304732Abstract: A measuring method that includes holding a specimen to be measured on a flat-plate periodic structure, applying a linearly-polarized electromagnetic wave to the flat-plate periodic structure, detecting the electromagnetic wave scattered forward or backward by the flat-plate periodic structure, and measuring characteristics of the specimen on the basis of a phenomenon that a dip waveform appearing in a frequency characteristic of the forward-scattered electromagnetic wave or a peak waveform appearing in a frequency characteristic of the backward-scattered electromagnetic wave is changed with the presence of the specimen.Type: GrantFiled: February 27, 2012Date of Patent: November 6, 2012Assignee: Murata Manufacturing Co., Ltd.Inventors: Seiji Kamba, Kazuhiro Takigawa, Takashi Kondo, Koji Tanaka
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Publication number: 20120262190Abstract: A measuring method for measuring characteristics of an object to be measured, the measuring method including holding the object on a void-arranged structure having at least two void portions that pass therethrough in a direction perpendicular to a principal surface thereof, and applying electromagnetic waves to the void-arranged structure on which the object is held to detect frequency characteristics of the electromagnetic waves transmitted through the void-arranged structure. The void-arranged structure has a grid structure in which the void portions are periodically arranged in at least one direction on the principal surface of the void-arranged structure. The characteristics of the object are measured on the basis of a relationship between a first frequency characteristic and a second frequency characteristic.Type: ApplicationFiled: June 22, 2012Publication date: October 18, 2012Applicant: MURATA MANUFACTURING CO., LTD.Inventors: Takashi Kondo, Kazuhiro Takigawa, Seiji Kamba, Ryoichi Fukazawa, Tomofumi Ikari
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Patent number: 8269967Abstract: A method of attaching an object to be measured to a structure causing a diffraction phenomenon; irradiating the structure to which the object to be measured is attached and which causes the diffraction phenomenon with an electromagnetic wave; detecting the electromagnetic wave scattered by the structure causing the diffraction phenomenon; and measuring a characteristic of the object to be measured from the frequency characteristic of the detected electromagnetic wave. The object to be measured is attached directly to the surface of the structure causing the diffraction phenomenon. Thus, the method for measuring the characteristic of an object to be measured exhibits an improved measurement sensitivity and high reproducibility. A structure causing a diffraction phenomenon and used for the method, and a measuring device are provided.Type: GrantFiled: September 22, 2011Date of Patent: September 18, 2012Assignees: Murata Manufacturing Co., Ltd., National University Corporation Tohoku UniversityInventors: Seiji Kamba, Takashi Kondo, Koji Tanaka, Kazuhiro Takigawa, Yuichi Ogawa
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Publication number: 20120153159Abstract: A measuring method that includes holding a specimen to be measured on a flat-plate periodic structure, applying a linearly-polarized electromagnetic wave to the flat-plate periodic structure, detecting the electromagnetic wave scattered forward or backward by the flat-plate periodic structure, and measuring characteristics of the specimen on the basis of a phenomenon that a dip waveform appearing in a frequency characteristic of the forward-scattered electromagnetic wave or a peak waveform appearing in a frequency characteristic of the backward-scattered electromagnetic wave is changed with the presence of the specimen.Type: ApplicationFiled: February 27, 2012Publication date: June 21, 2012Applicant: MURATA MANUFACTURING CO., LTD.Inventors: Seiji Kamba, Kazuhiro Takigawa, Takashi Kondo, Koji Tanaka
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Publication number: 20120137755Abstract: A measurement method that includes irradiating a void-arranged structure on which an analyte has been held with an electromagnetic wave, detecting an electromagnetic wave scattered on the void-arranged structure, and determining a property of the analyte on the basis of at least one parameter, the parameter including the amount of change in the ratio of the detected electromagnetic wave to the irradiated electromagnetic wave at a specific frequency between the presence and the absence of the analyte.Type: ApplicationFiled: February 16, 2012Publication date: June 7, 2012Inventors: Kazuhiro Takigawa, Takashi Kondo, Seiji Kamba, Yuichi Ogawa
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Publication number: 20120126123Abstract: A method of measuring specimen characteristics that includes holding a specimen on a gap array structure that includes gaps regularly arrayed in at least one array direction, applying a linearly-polarized electromagnetic wave to the gap array structure on which the specimen is held, detecting the electromagnetic wave scattered by the gap array structure, and measuring characteristics of the specimen based on a frequency characteristic of the detected scattered electromagnetic wave, wherein a polarizing direction of the linearly-polarized electromagnetic wave and a principal surface of the gap array structure are not parallel to each other.Type: ApplicationFiled: January 27, 2012Publication date: May 24, 2012Inventors: Takashi Kondo, Kazuhiro Takigawa, Seiji Kamba
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Publication number: 20120008142Abstract: A method of attaching an object to be measured to a structure causing a diffraction phenomenon; irradiating the structure to which the object to be measured is attached and which causes the diffraction phenomenon with an electromagnetic wave; detecting the electromagnetic wave scattered by the structure causing the diffraction phenomenon; and measuring a characteristic of the object to be measured from the frequency characteristic of the detected electromagnetic wave. The object to be measured is attached directly to the surface of the structure causing the diffraction phenomenon. Thus, the method for measuring the characteristic of an object to be measured exhibits an improved measurement sensitivity and high reproducibility. A structure causing a diffraction phenomenon and used for the method, and a measuring device are provided.Type: ApplicationFiled: September 22, 2011Publication date: January 12, 2012Applicants: National University Corporation Tohoku University, MURATA MANUFACTURING CO., LTD.Inventors: Seiji Kamba, Takashi Kondo, Koji Tanaka, Kazuhiro Takigawa, Yuichi Ogawa
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Publication number: 20110205528Abstract: A sample analysis method is provided for analyzing a sample having a permeability to terahertz radiation and accurately measure the composition, physical properties, mass and dimensions of a very small sample or a minute amount of sample by irradiating the sample with terahertz radiation. In the method, a reflective member is provided adjoining a first principal surface of the sample, an entrance member is provided adjoining a second principal surface of the sample, terahertz radiation is delivered from outside of entrance member towards the sample, and the sample is analyzed using an interference wave generated from a first-surface reflected wave at the interface between the first principal surface of the sample and the reflective member and a second-surface reflected wave at the interface between the second principal surface of the sample and the entrance member.Type: ApplicationFiled: April 14, 2011Publication date: August 25, 2011Applicants: TOHOKU UNIVERSITY, MURATA MANUFACTURING CO., LTD.Inventors: Yuichi Ogawa, Shinichiro Hayashi, Seiji Kamba, Takashi Kondo
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Patent number: 6630875Abstract: A dual-mode band-pass filter having a greatly reduced size and a high design flexibility, includes a frame-shaped electrode pattern disposed on one surface or inside a dielectric substrate. A pair of input-output circuits are coupled to the frame-shaped electrode pattern. The plane shape and the line-width of the frame-shaped electrode pattern are configured so that two generated resonance modes are coupled to each other.Type: GrantFiled: September 27, 2002Date of Patent: October 7, 2003Assignee: Murata Manufacturing Co., Ltd.Inventors: Naoki Mizoguchi, Hisatake Okamura, Seiji Kamba
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Publication number: 20030076201Abstract: A dual-mode band-pass filter having a greatly reduced size and a high design flexibility, includes a frame-shaped electrode pattern disposed on one surface or inside a dielectric substrate. A pair of input-output circuits are coupled to the frame-shaped electrode pattern. The plane shape and the line-width of the frame-shaped electrode pattern are configured so that two generated resonance modes are coupled to each other.Type: ApplicationFiled: September 27, 2002Publication date: April 24, 2003Applicant: Murata Manufacturing Co., Ltd.Inventors: Naoki Mizoguchi, Hisatake Okamura, Seiji Kamba
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Patent number: 6545568Abstract: A dual-mode band-pass filter having a greatly reduced size and a high design flexibility, includes a frame-shaped electrode pattern disposed on one surface or inside a dielectric substrate. A pair of input-output circuits are coupled to the frame-shaped electrode pattern. The plane shape and the line-width of the frame-shaped electrode pattern are configured so that two generated resonance modes are coupled to each other.Type: GrantFiled: July 10, 2001Date of Patent: April 8, 2003Assignee: Murata Manufacturing Co., Ltd.Inventors: Naoki Mizoguchi, Hisatake Okamura, Seiji Kamba
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Patent number: 6507251Abstract: In a dual-mode bandpass filter, a metal film is partially formed on one surface of a dielectric substrate or at a certain vertical level within the dielectric substrate, first and second input/output coupling circuits are coupled to the metal film, at least one capacitor is loaded to the metal film so that when an input signal is applied from either input/output coupling circuit, two resonant modes generated in the metal film are coupled. The capacitor preferably includes via-hole electrodes opposing the metal film.Type: GrantFiled: September 18, 2001Date of Patent: January 14, 2003Assignee: Murata Manufacturing Co., Ltd.Inventors: Naoki Mizoguchi, Hisatake Okamura, Seiji Kamba
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Publication number: 20020033743Abstract: In a dual-mode bandpass filter, a metal film is partially formed on one surface of a dielectric substrate or at a certain vertical level within the dielectric substrate, first and second input/output coupling circuits are coupled to the metal film, at least one capacitor is loaded to the metal film so that when an input signal is applied from either input/output coupling circuit, two resonant modes generated in the metal film are coupled. The capacitor preferably includes via-hole electrodes opposing the metal film.Type: ApplicationFiled: September 18, 2001Publication date: March 21, 2002Applicant: Murata Manufacturing Co., Ltd.Inventors: Naoki Mizoguchi, Hisatake Okamura, Seiji Kamba
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Publication number: 20020005770Abstract: A dual-mode band-pass filter having a greatly reduced size and a high design flexibility, includes a frame-shaped electrode pattern disposed on one surface or inside a dielectric substrate. A pair of input-output circuits are coupled to the frame-shaped electrode pattern. The plane shape and the line-width of the frame-shaped electrode pattern are configured so that two generated resonance modes are coupled to each other.Type: ApplicationFiled: July 10, 2001Publication date: January 17, 2002Inventors: Naoki Mizoguchi, Hisatake Okamura, Seiji Kamba