Patents by Inventor Naoto Nakayama
Naoto Nakayama 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: 11852575Abstract: A state determination apparatus includes: electrodes configured to apply AC signal to a mixture; a measurement unit configured to measure an impedance of the mixture for every frequency of the AC signal based on a response signal flowing through the mixture when the AC signal is applied; a setting unit configured to set an equivalent circuit including one or a plurality of parallel circuit(s) based on element(s) corresponding to electrical component(s) of a solid matter; a calculating unit configured to calculate a parameter of the parallel circuit by executing an equivalent circuit analysis for approximating impedance of the equivalent circuit to the impedance of the mixture; and a derivation unit configured to derive an index for specifying a state of the mixture based on the parameter of the parallel circuit.Type: GrantFiled: August 4, 2021Date of Patent: December 26, 2023Assignee: HIOKI E.E. CORPORATIONInventors: Yuki Kawamuro, Akihiro Shioiri, Naoto Nakayama
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Patent number: 11796439Abstract: A uniformity output device for outputting a uniformity of particles in a slurry, in which an insoluble solid matter is mixed in liquid, includes: a pair of electrodes configured to apply AC voltage to the slurry; a measurement unit configured to measure impedance of the slurry on the basis of the response current flowing through the slurry when AC voltage with changing frequency is applied to the slurry; and a processing unit configured to determine the uniformity by executing a particle equivalent circuit analysis with a parallel circuit formed of a resistor and a capacitor as an element on the basis of the impedance measured by the measurement unit in accordance with the frequency.Type: GrantFiled: January 22, 2021Date of Patent: October 24, 2023Assignees: HIOKI E.E. CORPORATION, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Akihiro Shioiri, Naoto Nakayama, Yuki Kawamuro, Masahiro Horibe
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Patent number: 11525794Abstract: A uniformity property acquisition apparatus is the uniformity property acquisition apparatus configured to acquires a uniformity property of a mixture in which an insoluble solid matter is mixed in liquid, and the uniformity property acquisition apparatus includes: a pair of electrodes configured to apply the AC signal to the mixture; measurement unit configured to measure impedance of the mixture on the basis of a response signal flowing through the mixture when the AC signal is applied to the mixture; and processing unit configured to acquire the uniformity property of the mixture on the basis of the impedance measured by the measurement unit.Type: GrantFiled: January 22, 2021Date of Patent: December 13, 2022Assignee: HIOKI E.E. CorporationInventors: Naoto Nakayama, Akihiro Shioiri, Yuki Kawamuro
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Publication number: 20220042897Abstract: A state determination apparatus includes: electrodes configured to apply AC signal to a mixture; a measurement unit configured to measure an impedance of the mixture for every frequency of the AC signal based on a response signal flowing through the mixture when the AC signal is applied; a setting unit configured to set an equivalent circuit including one or a plurality of parallel circuit(s) based on element(s) corresponding to electrical component(s) of a solid matter; a calculating unit configured to calculate a parameter of the parallel circuit by executing an equivalent circuit analysis for approximating impedance of the equivalent circuit to the impedance of the mixture; and a derivation unit configured to derive an index for specifying a state of the mixture based on the parameter of the parallel circuit.Type: ApplicationFiled: August 4, 2021Publication date: February 10, 2022Inventors: Yuki KAWAMURO, Akihiro SHIOIRI, Naoto NAKAYAMA
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Publication number: 20210231549Abstract: A uniformity output device for outputting a uniformity of particles in a slurry, in which an insoluble solid matter is mixed in liquid, includes: a pair of electrodes configured to apply AC voltage to the slurry; a measurement unit configured to measure impedance of the slurry on the basis of the response current flowing through the slurry when AC voltage with changing frequency is applied to the slurry; and a processing unit configured to determine the uniformity by executing a particle equivalent circuit analysis with a parallel circuit formed of a resistor and a capacitor as an element on the basis of the impedance measured by the measurement unit in accordance with the frequency.Type: ApplicationFiled: January 22, 2021Publication date: July 29, 2021Inventors: Akihiro SHIOIRI, Naoto NAKAYAMA, Yuki KAWAMURO, Masahiro HORIBE
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Publication number: 20210231594Abstract: A uniformity property acquisition apparatus is the uniformity property acquisition apparatus configured to acquires a uniformity property of a mixture in which an insoluble solid matter is mixed in liquid, and the uniformity property acquisition apparatus includes: a pair of electrodes configured to apply the AC signal to the mixture; measurement unit configured to measure impedance of the mixture on the basis of a response signal flowing through the mixture when the AC signal is applied to the mixture; and processing unit configured to acquire the uniformity property of the mixture on the basis of the impedance measured by the measurement unit.Type: ApplicationFiled: January 22, 2021Publication date: July 29, 2021Inventors: Naoto NAKAYAMA, Akihiro SHIOIRI, Yuki KAWAMURO
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Patent number: 10927316Abstract: A char discharge unit is for discharging char discharged from a filtration unit into a char storage unit in which a pressure is at least temporarily higher pressure than that in the filtration unit. The char discharge unit includes a char discharge line connected to a lower side of the filtration unit in a vertical direction and connected to the char storage unit; a lock hopper installed at an intermediary point of the char discharge line to temporarily store the char; an admission valve installed in the char discharge line between the lock hopper and the filtration unit; a control valve installed in the char discharge line between the lock hopper and the char storage unit; and a control device configured to close the control valve when the admission valve is open, and to close the admission valve when the control valve is open.Type: GrantFiled: December 12, 2016Date of Patent: February 23, 2021Assignee: MITSUBISHI POWER, LTDInventors: Haruto Shinoda, Koji Nishimura, Naoto Nakayama, Yasunari Shibata
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Publication number: 20200263101Abstract: A char discharge unit is for discharging char discharged from a filtration unit into a char storage unit in which a pressure is at least temporarily higher pressure than that in the filtration unit. The char discharge unit includes a char discharge line connected to a lower side of the filtration unit in a vertical direction and connected to the char storage unit; a lock hopper installed at an intermediary point of the char discharge line to temporarily store the char; an admission valve installed in the char discharge line between the lock hopper and the filtration unit; a control valve installed in the char discharge line between the lock hopper and the char storage unit; and a control device configured to close the control valve when the admission valve is open, and to close the admission valve when the control valve is open.Type: ApplicationFiled: December 12, 2016Publication date: August 20, 2020Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Haruto Shinoda, Koji Nishimura, Naoto Nakayama, Yasunari Shibata
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Patent number: 10717594Abstract: Provided is a pressurizing system which includes: a pressurizing nozzle configured to supply a pressurizing gas into a hopper (3) where pulverized coal is accumulated; a filter configured to face a space in the hopper (3) where the pulverized coal is accumulated, and to allow the pressurizing gas to pass through the filter, the filter being provided at an end of the pressurizing nozzle; buffer tanks (5a), (5b) in which a pressurizing gas to be supplied to the hopper (3) is collected at a first predetermined pressure; and a pressure control means configured to start, at a time of starting pressurization of the hopper (3), supply of a pressurizing gas at a second predetermined pressure which is lower than the first predetermined pressure of the pressurizing gas collected in the buffer tanks (5a), (5b).Type: GrantFiled: February 6, 2017Date of Patent: July 21, 2020Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Yuichiro Urakata, Koji Nishimura, Naoto Nakayama, Yoshinori Koyama, Tatsuya Kameyama
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Patent number: 10233401Abstract: Provided are a char feeding hopper that makes it possible to accurately measure char, a char recovery system, and a coal gasification combined power generation system. The char feeding hopper comprises: a char feeding hopper body that feeds separated char to a coal gasifier side; at least two casing tubes (121, 122) that are inserted from a side wall of the char feeding hopper body and that are provided so as to be aligned with one another in the vertical axis direction; a radiation source section (101) that is provided within the casing tube (121) and that emits ?-rays within the char feeding hopper body; and a ?-ray detector that is provided within the casing tube (122) and that detects emitted ?-rays. The cross-section of each casing tube (121, 122) has a shape that is provided with a tapered section (200) having an apex angle on the upper edge thereof.Type: GrantFiled: September 12, 2014Date of Patent: March 19, 2019Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Yasuyuki Miyata, Yoshinori Koyama, Yasuo Soda, Junichiro Yamamoto, Koji Nishimura, Naoto Nakayama
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Publication number: 20190031430Abstract: Provided is a pressurizing system which includes: a pressurizing nozzle configured to supply a pressurizing gas into a hopper (3) where pulverized coal is accumulated; a filter configured to face a space in the hopper (3) where the pulverized coal is accumulated, and to allow the pressurizing gas to pass through the filter, the filter being provided at an end of the pressurizing nozzle; buffer tanks (5a), (5b) in which a pressurizing gas to be supplied to the hopper (3) is collected at a first predetermined pressure; and a pressure control means configured to start, at a time of starting pressurization of the hopper (3), supply of a pressurizing gas at a second predetermined pressure which is lower than the first predetermined pressure of the pressurizing gas collected in the buffer tanks (5a), (5b).Type: ApplicationFiled: February 6, 2017Publication date: January 31, 2019Applicant: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Yuichiro Urakata, Koji Nishimura, Naoto Nakayama, Yoshinori Koyama, Tatsuya Kameyama
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Patent number: 9964518Abstract: An electroplating solution analyzing apparatus measures a first current that flows between a counter electrode and a working electrode placed in electroplating solution while depositing metal on the working electrode by applying a set first voltage between a reference electrode and the working electrode and then measures a second current that flows between the counter electrode and the working electrode with a cycle set in advance while dissolving the metal deposited on the working electrode into the electroplating solution by applying a second voltage, which changes at a rate set in advance, between the reference electrode and the working electrode. During measurement, the first voltage is changed in a range set to produce a current density within a current density range set in advance. An analysis process then analyzes the state of the electroplating solution based on the values acquired by measurement.Type: GrantFiled: November 12, 2015Date of Patent: May 8, 2018Assignee: HIOKI DENKI KABUSHIKI KAISHAInventor: Naoto Nakayama
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Publication number: 20160237358Abstract: Provided are a char feeding hopper that makes it possible to accurately measure char, a char recovery system, and a coal gasification combined power generation system. The char feeding hopper comprises: a char feeding hopper body that feeds separated char to a coal gasifier side; at least two casing tubes (121, 122) that are inserted from a side wall of the char feeding hopper body and that are provided so as to be aligned with one another in the vertical axis direction; a radiation source section (101) that is provided within the casing tube (121) and that emits ?-rays within the char feeding hopper body; and a ?-ray detector that is provided within the casing tube (122) and that detects emitted ?-rays. The cross-section of each casing tube (121, 122) has a shape that is provided with a tapered section (200) having an apex angle on the upper edge thereof.Type: ApplicationFiled: September 12, 2014Publication date: August 18, 2016Inventors: Yasuyuki MIYATA, Yoshinori KOYAMA, Yasuo SODA, Junichiro YAMAMOTO, Koji NISHIMURA, Naoto NAKAYAMA
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Patent number: 9388349Abstract: The present invention includes: a char feeding hopper body that feeds separated char toward a coal gasifier; a char communicating tube that communicates with a bottom portion of the char feeding hopper body and extends in a vertical axis direction; fluid gas feeding means that is provided at a bottom portion side of the char feeding hopper body and feeds fluid gas to an inside thereof; a radiation source section that emits ?-rays toward an inside of the char communicating tube in which a level of the char reaches a level H2 which is the same level as a level H1 of the char in the char feeding hopper as a result of feeding of the fluid gas; and a ?-ray detector that is provided along a vertical axis direction of the char communicating tube and detects the emitted ?-rays.Type: GrantFiled: August 10, 2012Date of Patent: July 12, 2016Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yoshinori Koyama, Yasunari Shibata, Osamu Shinada, Katsuhiko Yokohama, Taketoshi Sakae, Koji Nishimura, Naoto Nakayama
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Publication number: 20160146757Abstract: An electroplating solution analyzing apparatus measures a first current that flows between a counter electrode and a working electrode placed in electroplating solution while depositing metal on the working electrode by applying a set first voltage between a reference electrode and the working electrode and then measures a second current that flows between the counter electrode and the working electrode with a cycle set in advance while dissolving the metal deposited on the working electrode into the electroplating solution by applying a second voltage, which changes at a rate set in advance, between the reference electrode and the working electrode. During measurement, the first voltage is changed in a range set to produce a current density within a current density range set in advance. An analysis process then analyzes the state of the electroplating solution based on the values acquired by measurement.Type: ApplicationFiled: November 12, 2015Publication date: May 26, 2016Applicant: HIOKI DENKI KABUSHIKI KAISHAInventor: Naoto NAKAYAMA
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Publication number: 20140250786Abstract: The present invention includes: a char feeding hopper body that feeds separated char toward a coal gasifier; a char communicating tube that communicates with a bottom portion of the char feeding hopper body and extends in a vertical axis direction; fluid gas feeding means that is provided at a bottom portion side of the char feeding hopper body and feeds fluid gas to an inside thereof; a radiation source section that emits ?-rays toward an inside of the char communicating tube in which a level of the char reaches a level H2 which is the same level as a level H1 of the char in the char feeding hopper as a result of feeding of the fluid gas; and a ?-ray detector that is provided along a vertical axis direction of the char communicating tube and detects the emitted ?-rays.Type: ApplicationFiled: August 10, 2012Publication date: September 11, 2014Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yoshinori Koyama, Yasunari Shibata, Osamu Shinada, Katsuhiko Yokohama, Taketoshi Sakae, Koji Nishimura, Naoto Nakayama
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Patent number: 4408181Abstract: A document data filing system used with an index data list bearing the index data associated with the document data on a plurality of documents, comprises read means for reading the document data on the document and the associated index data on the index data list, a first buffer memory for temporarily storing the document data read out by the read means, a second buffer memory means for temporarily storing the index data read by the read means, and a memory control means for applying the document data stored in the first buffer memory, together with the corresponding index data stored in the second buffer memory.Type: GrantFiled: April 9, 1980Date of Patent: October 4, 1983Assignee: Tokyo Shibaura Denki Kabushiki KaishaInventor: Naoto Nakayama