Patents by Inventor Makoto Nagura
Makoto Nagura 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: 20220404256Abstract: A particle size distribution measuring apparatus includes a light source that emits measurement light to a sample accommodated in a cell including a pair of light transmission plates separated from each other, one or a plurality of detectors that detects the measurement light scattered in the sample, and a particle size distribution calculator that calculates a particle size distribution of a particle group included in the sample based on output signals of the detectors. The particle size distribution measuring apparatus further includes a force applying mechanism that moves at least one of the light transmission plates to apply pressure or a shearing force to the sample in the cell, in which the particle size distribution calculator is configured to calculate the particle size distribution at the time when the pressure or the shearing force applied to the sample has changed from a first state to a second state.Type: ApplicationFiled: November 9, 2020Publication date: December 22, 2022Inventors: Tetsuji YAMAGUCHI, Tetsuya MORI, Makoto NAGURA
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Patent number: 11486800Abstract: A sample dispersing device contains a container inside of which a dispersal chamber where a power sample is dispersed is formed, and an introducing mechanism that introduces a gas containing the powder sample from the outside of the container into the dispersal chamber based on a pressure difference between the inside and the outside of the container. The introducing mechanism contains an introduction pipe where the gas containing the powder sample flows, and several restrictors arranged in the introduction pipe.Type: GrantFiled: September 10, 2018Date of Patent: November 1, 2022Assignee: HORIBA, LTD.Inventors: Makoto Nagura, Kazuma Aoyagi, Akihiro Minami, Hiroshi Tateno, Tomoya Shimizu, Kusuo Ueno
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Patent number: 11448579Abstract: A particle size distribution measuring device includes an actual spectrum obtaining unit obtaining an actual spectrum which is a light intensity spectrum; a non-target spectrum calculating unit that receives non-target particle size distribution data indicating a particle size distribution of a non-target particle group which is not a measurement target and which is accommodated in the cell and that calculates, on the basis of the non-target particle size distribution data, a non-target spectrum which is a light intensity spectrum to be obtained by irradiating the non-target particle group with light; a non-target spectrum removing unit that calculates a target spectrum which is a light intensity spectrum obtained by subtracting an influence of the non-target spectrum from the actual spectrum; and a target particle size distribution calculating unit that calculates the particle size distribution of the particle group which is the measurement target on the basis of the target spectrum.Type: GrantFiled: May 27, 2019Date of Patent: September 20, 2022Assignee: HORIBA, LTD.Inventors: Tetsuya Mori, Hisashi Akiyama, Makoto Nagura
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Publication number: 20220026330Abstract: A complex particle measurement apparatus comprising a first light source that irradiates a first storage cell; a photodetector that detects intensity of light; a second light source that irradiates a second storage cell; an imaging unit that images a particle group; an image data output unit that outputs image data; a supporter that supports the first storage cell and the second storage cell; and a communication pipe that connects the first storage cell and the second storage cell to pass a sample solution, wherein the first storage cell and the second storage cell have bottom surfaces located at positions different from each other, and the communication pipe is laid such that a channel from the first storage cell to the second storage cell has an incline of not less than 0 or not more than 0.Type: ApplicationFiled: October 15, 2019Publication date: January 27, 2022Inventors: Hisashi AKIYAMA, Yasuhiro TATEWAKI, Yohei OKA, Takeshi AKAMATSU, Makoto NAGURA, Takashi KIMBA
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Publication number: 20210310926Abstract: A particle size distribution measuring device includes an actual spectrum obtaining unit obtaining an actual spectrum which is a light intensity spectrum; a non-target spectrum calculating unit that receives non-target particle size distribution data indicating a particle size distribution of a non-target particle group which is not a measurement target and which is accommodated in the cell and that calculates, on the basis of the non-target particle size distribution data, a non-target spectrum which is a light intensity spectrum to be obtained by irradiating the non-target particle group with light; a non-target spectrum removing unit 23 that calculates a target spectrum which is a light intensity spectrum obtained by subtracting an influence of the non-target spectrum from the actual spectrum; and a target particle size distribution calculating unit that calculates the particle size distribution of the particle group which is the measurement target on the basis of the target spectrum.Type: ApplicationFiled: May 27, 2019Publication date: October 7, 2021Inventors: Tetsuya MORI, Hisashi AKIYAMA, Makoto NAGURA
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Publication number: 20210088423Abstract: A sample dispersing device contains a container inside of which a dispersal chamber where a power sample is dispersed is formed, and an introducing mechanism that introduces a gas containing the powder sample from the outside of the container into the dispersal chamber based on a pressure difference between the inside and the outside of the container. The introducing mechanism contains an introduction pipe where the gas containing the powder sample flows, and several restrictors arranged in the introduction pipe.Type: ApplicationFiled: September 10, 2018Publication date: March 25, 2021Inventors: Makoto NAGURA, Kazuma AOYAGI, Akihiro MINAMI, Hiroshi TATENO, Tomoya SHIMIZU, Kusuo UENO
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Patent number: 10782225Abstract: The present invention is one that makes it possible to facilitate the assembly of an optical measurement cell, as well as shorten optical path length without taking account of handling of a spacer, and an optical measurement cell 2 including a pair of light transmitting plates 21 and 22 respectively having opposite surfaces 21a and 22a facing each other and containing test liquid X between the pair of opposite surfaces 21a and 22a of the pair of light transmitting plates 21 and 22. In addition, one 21a of the opposite surfaces 21a and 22a is formed with a spacer film 25 that contacts with the other opposite surface 22a to define the distance between the pair of opposite surfaces 21a and 22a.Type: GrantFiled: June 20, 2018Date of Patent: September 22, 2020Assignee: HORIBA, LTD.Inventors: Tetsuji Yamaguchi, Toshikazu Yurugi, Makoto Nagura, Takashi Kimba, Tetsuya Mori
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Publication number: 20180372614Abstract: The present invention is one that makes it possible to facilitate the assembly of an optical measurement cell, as well as shorten optical path length without taking account of handling of a spacer, and an optical measurement cell 2 including a pair of light transmitting plates 21 and 22 respectively having opposite surfaces 21a and 22a facing each other and containing test liquid X between the pair of opposite surfaces 21a and 22a of the pair of light transmitting plates 21 and 22. In addition, one 21a of the opposite surfaces 21a and 22a is formed with a spacer film 25 that contacts with the other opposite surface 22a to define the distance between the pair of opposite surfaces 21a and 22a.Type: ApplicationFiled: June 20, 2018Publication date: December 27, 2018Inventors: Tetsuji YAMAGUCHI, Toshikazu Yurugi, Makoto Nagura, Takashi Kimba, Tetsuya Mori
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Patent number: 9034164Abstract: The present invention is configured to be provided with: a bottom-equipped tubular cell main body that forms an internal space S1 that extends in a longer direction, and has one end part that is opened; a pair of applying electrodes that are arranged so as to face to each other in the internal space; and a fixing spacer that intervenes between the pair of applying electrodes to thereby define a distance between the applying electrodes, and fixes the pair of applying electrodes, wherein in a state where the fixing spacer is inserted into the cell main body, in a lower part of the internal space of the cell main body, a zeta potential measuring space in which the pair of applying electrodes are exposed is formed.Type: GrantFiled: August 30, 2011Date of Patent: May 19, 2015Assignee: HORIBA, LTD.Inventors: Tetsuji Yamaguchi, Makoto Nagura
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Publication number: 20120048737Abstract: The present invention is configured to be provided with: a bottom-equipped tubular cell main body that forms an internal space S1 that extends in a longer direction, and has one end part that is opened; a pair of applying electrodes that are arranged so as to face to each other in the internal space; and a fixing spacer that intervenes between the pair of applying electrodes to thereby define a distance between the applying electrodes, and fixes the pair of applying electrodes, wherein in a state where the fixing spacer is inserted into the cell main body, in a lower part of the internal space of the cell main body, a zeta potential measuring space in which the pair of applying electrodes are exposed is formed.Type: ApplicationFiled: August 30, 2011Publication date: March 1, 2012Applicant: HORIBA, LTD.Inventors: Tetsuji YAMAGUCHI, Makoto NAGURA
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Patent number: 7499809Abstract: In a measurement system, by suppressing the environmental changes of counter-flow of air, and temperature changes and the like, measurement can be accomplished with stable high precision and replication, and by providing a transparent cell 2 which stores a particles dispersed in a dispersion medium, and a light source which irradiates light onto the particles within the transparent cell 2, and multiple light detectors 5 scattered and arranged to detect the intensity of diffracted/scattered light produced by the irradiation of light, and a computer device 6 which calculates the particle size distribution of the particles based on the light intensity signal output from the light detectors 5, in addition to the establishment of cell storage space S which stores the transparent cell 2 and the equipment storage spaces S1 and S2 which store the light source 41a, the light detector 5, and the optical device 6, the equipment storage spaces S1 and S2 are given tight closed construction separate from the cell storage sType: GrantFiled: August 30, 2005Date of Patent: March 3, 2009Assignee: Horiba, Ltd.Inventors: Makoto Nagura, Yuki Ishii, Hideyuki Ikeda, Takuji Kurozumi, Yoshiaki Togawa
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Publication number: 20060052944Abstract: In a measurement system, by suppressing the environmental changes of counter-flow of air, and temperature changes and the like, measurement can be accomplished with stable high precision and replication, and by providing a transparent cell 2 which stores a particles dispersed in a dispersion medium, and a light source which irradiates light onto the particles within the transparent cell 2, and multiple light detectors 5 scattered and arranged to detect the intensity of diffracted/scattered light produced by the irradiation of light, and a computer device 6 which calculates the particle size distribution of the particles based on the light intensity signal output from the light detectors 5, in addition to the establishment of cell storage space S which stores the transparent cell 2 and the equipment storage spaces S1 and S2 which store the light source 41a, the light detector 5, and the optical device 6, the equipment storage spaces S1 and S2 are given tight closed construction separate from the cell storage sType: ApplicationFiled: August 30, 2005Publication date: March 9, 2006Inventors: Makoto Nagura, Yuki Ishii, Hideyuki Ikeda, Takuji Kurozumi, Yoshiaki Togawa
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Publication number: 20040032503Abstract: The invention aims at providing a cell phone equipped with a camera arranged so that the camera shutter may be automatically operated through control from another telephone set or cell phone. In order to attain the object, the invention provides a cell phone equipped with a camera arranged so that the camera shutter is automatically operated based on an incoming call signal corresponding to an incoming call or based on a specific signal received after a response to the incoming call signal while the cell phone is in the camera mode.Type: ApplicationFiled: March 21, 2003Publication date: February 19, 2004Inventors: Takao Monden, Junji Ishigaki, Makoto Nagura, Kiyoshi Nakanishi