Patents by Inventor Kotaro Nakamura
Kotaro Nakamura 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: 10707809Abstract: The disclosure is provided to improve the accuracy of a ground fault position detected from a power conditioning system. A ground fault position calculation part (41) calculates a ground fault position (Pg) by using a power supply voltage of a solar cell string (11), a ground fault current (Ig), and a ground potential of an input terminal (N) measured by a power conditioning system (12). The ground fault position calculation part (41) sets a lower limit value of the power supply voltage to be used.Type: GrantFiled: September 17, 2018Date of Patent: July 7, 2020Assignee: OMRON CorporationInventors: Akihiko Sano, Kotaro Nakamura, Kenji Kobayashi, Kohei Nakagawa, Makoto Ide
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Publication number: 20200189396Abstract: A collector shoe is provided. The collector shoe in one aspect of the present disclosure includes a shoe body, a sliding plate disposed on a top surface of the shoe body, and an electrically conductive member disposed on a front and/or rear side surface of the shoe body.Type: ApplicationFiled: August 2, 2016Publication date: June 18, 2020Applicant: Central Japan Railway CompanyInventors: Kei SAKANOUE, Isao NARUSE, Kotaro NAKAMURA, Kazuki TANAKA
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Publication number: 20200141985Abstract: Provided is a collected current monitoring device enabling an analysis of collected current in each current collector while allowing a reduced equipment cost. The collected current monitoring device of the present disclosure is installed in a railroad vehicle including current collectors, main transformers, and main converters.Type: ApplicationFiled: October 28, 2019Publication date: May 7, 2020Applicant: Central Japan Railway CompanyInventors: Yuichi Ahiko, Kotaro Nakamura, Hiroki Shimoyama
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Patent number: 10603096Abstract: A treatment-energy applying structure includes a flexible substrate having a wiring pattern having a heat-generation region and a connection region. A heat transfer plate faces a surface of the flexible substrate, and transfers heat to a body tissue. An adhesive sheet, having heat conductivity, is disposed between the flexible substrate and the heat transfer plate to cover the entirety of the heat-generation region and the heat transfer plate. A region of the adhesive sheet protrudes from the heat transfer plate to cover a region of the connection region. A pair of lead wires connects to the connection region outside of the covered region. The adhesive sheet is longer than the heat transfer plate and shorter than the flexible substrate. A gap between an end of the heat transfer plate and the lead wires is longer than a diameter of the lead wires or a thickness of the heat transfer plate.Type: GrantFiled: August 10, 2017Date of Patent: March 31, 2020Assignee: Olympus CorporationInventors: Kotaro Nakamura, Shinji Yasunaga
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Publication number: 20200049752Abstract: Provided is an inspection device for contact strip that enables proper quality control of a collector head using a split-type contact strip. Disclosed is an inspection device for a collector head having an overhead contact line contact assembly that includes a contact strip, including electrically-conductive strip pieces aligned in a series and in a longitudinal direction, and springs elastically supporting the contact strip. The inspection device for a collector head includes a measurer of rigidity of the overhead contact line contact assembly in a thickness direction of the contact strip at multiple points on an axis parallel to the juxtaposition direction of the strip pieces; and a determiner of an abnormality in the collector head by comparison of measurement data of rigidity distribution at the multiple points based on measurement results from the measurer with reference data of rigidity distribution prepared beforehand.Type: ApplicationFiled: August 7, 2019Publication date: February 13, 2020Inventors: Yuichi Ahiko, Kotaro Nakamura, Kenichi Kitazawa, Hiroaki Shintani
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Publication number: 20200047621Abstract: The present disclosure provides a collected current monitoring device installed on a railroad vehicle comprising a first current collector and a second current collector. The collected current monitoring device comprises a detector that detects a first current flowing to the first current collector and a second current flowing to the second current collector, and a determiner that determines whether it is necessary to control collected current of the railroad vehicle based on the first current and the second current detected by the detector. The determiner determines that it is necessary to control the collected current when a sum of a first non-energized time during which the first current is not flowing and a second non-energized time during which the second current is not flowing in a specified counting time exceeds a threshold value.Type: ApplicationFiled: August 7, 2019Publication date: February 13, 2020Inventors: Kotaro Nakamura, Hiroki Shimoyama, Shota Mizuno, Yoshitsugu Morita, Ryota Shinmura
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Patent number: 10520967Abstract: A power converter capable of minimizing the amount of fluctuation in the input power value to the boost circuit when changing the number of operating circuits and the switching frequency; when reducing the number of boost chopper circuits operating and the switching frequency the controller reduces the duty cycle of the PWM signal to a circuit to be halted while said circuit scheduled for halt operates, whereafter the controller halts operation of said circuit scheduled for halt and changes the switching frequency to a frequency corresponding to the state determination value.Type: GrantFiled: September 29, 2017Date of Patent: December 31, 2019Assignee: OMRON CorporationInventors: Kosuke Nomura, Kenji Kobayashi, Kotaro Nakamura
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Publication number: 20190391189Abstract: A collected current monitoring device is provided which includes a current-value obtaining unit that obtains a current value I1 and a current value I2, a first RMS-calculation unit that calculates a root mean square RMS1, a second RMS-calculation unit that calculates a root mean square RMS2, an Iu calculation unit that calculates an imbalance current Iu, a change calculation unit that calculates an amount of change ?Iu, an average calculation unit that calculates a time average value ave?Iu, a determining unit that determines whether the time average value ave?Iu is larger than a threshold value, and a signal output unit that outputs an abnormality signal when the time average value ave?Iu is larger than the threshold value.Type: ApplicationFiled: June 20, 2019Publication date: December 26, 2019Inventors: Hironobu Sunami, Kazuki Tanaka, Yoshitsugu Morita, Isamu Makara, Yuichi Ahiko, Kotaro Nakamura, Hiroki Shimoyama
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Patent number: 10459317Abstract: A structure includes a sheet metal antenna as a first member, a rear-surface-side housing as a second member including a through hole, and a sealing portion which seals the through hole while the sealing portion fixes relative positional relation between the first and second members. The second member includes a space. The sheet metal antenna includes a second portion along a second surface and an intermediate portion which passes through the through hole and the like. The space includes a first region covered with the second portion and the like, a second region located opposite to the first region with the intermediate portion being interposed, and a third region which lies from one main surface of the intermediate portion to the other main surface thereof while it is in contact with both of the first region and the second region. The second portion includes an injection hole.Type: GrantFiled: July 26, 2017Date of Patent: October 29, 2019Assignee: KYOCERA CORPORATIONInventors: Yasuhito Kanemaki, Akito Iwai, Kotaro Nakamura, Shuhei Hisano
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Patent number: 10377240Abstract: A collected-current monitoring device includes a current-value obtaining unit for obtaining current values I1 and I2; a first RMS-calculation unit for calculating a root mean square (RMS) 1 of the current value I1 at a window width W; a second RMS-calculation unit for calculating a root mean square (RMS) 2 of the current value I2 at the window width W; a determining unit for determining whether a combination of the RMS 1 and the RMS 2 satisfies an abnormality condition; an abnormality-signal output unit for outputting an abnormality signal when the abnormality condition is satisfied; an information-obtaining unit for obtaining railway vehicle information; and a setting unit for setting a set-parameter that includes at least one of the window width W or the abnormality condition depending on the railway vehicle information.Type: GrantFiled: November 1, 2016Date of Patent: August 13, 2019Assignee: CENTRAL JAPAN RAILWAY COMPANYInventors: Yuichi Ahiko, Kotaro Nakamura, Hiroki Shimoyama
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Patent number: 10356502Abstract: An electronic device includes a housing, an elastic member positioned by the housing, and an acoustic component held by the elastic member. The elastic member includes a main body portion surrounding the acoustic component and a membrane portion which is continuous to the main body portion and faces the acoustic component. The housing includes a passage which communicates the membrane portion and an external space with each other.Type: GrantFiled: February 17, 2017Date of Patent: July 16, 2019Assignee: KYOCERA CORPORATIONInventors: Kotaro Nakamura, Kouta Iyoda
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Patent number: 10343526Abstract: A collected-current monitoring device includes a current-value obtaining unit for obtaining current values I1 and I2; a first RMS-calculation unit for calculating a root mean square (RMS) 1 of the current value I1 at a window width W; a second RMS-calculation unit for calculating a root mean square (RMS) 2 of the current value I2 at the window width W; a determining unit for determining whether a combination of the RMS 1 and the RMS 2 satisfies an abnormality condition; an abnormality-signal output unit for outputting an abnormality signal when the abnormality condition is satisfied; an information-obtaining unit for obtaining railway vehicle information; and a setting unit for setting a set-parameter that includes at least one of the window width W or the abnormality condition depending on the railway vehicle information.Type: GrantFiled: November 1, 2016Date of Patent: July 9, 2019Assignee: CENTRAL JAPAN RAILWAY COMPANYInventors: Yuichi Ahiko, Kotaro Nakamura, Hiroki Shimoyama
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Patent number: 10341474Abstract: A mobile device is disclosed. A mobile device comprises a display, a battery disposed on the back side of the display, and a film speaker disposed on the back side of the battery.Type: GrantFiled: May 23, 2016Date of Patent: July 2, 2019Assignee: KYOCERA CorporationInventors: Mizuho Hidaka, Norikazu Morioka, Kotaro Nakamura, Tomoki Tsuchiya, Keiichi Nagoshi, Tetsuya Shimoda
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Patent number: 10320327Abstract: A power storage power conditioner includes an input part, a voltage-transforming part, a first input-output part, a converting part and a second input-output part. The voltage-transforming part transforms the voltage of DC power from the input part and the converting part into a second predetermined voltage. The first input-output part outputs the DC power of the voltage-transforming part to a battery unit, and inputs DC power from the battery unit. The voltage-transforming part transforms a voltage of the DC power from the first input-output part into a third predetermined voltage. The converting part converts the DC power from the input part and the voltage-transforming part into AC power. The second input-output part outputs the AC power to a power system or a load, and inputs AC power from the power system. The converting part converts the AC power from the second input-output part into DC power.Type: GrantFiled: September 13, 2018Date of Patent: June 11, 2019Assignee: OMRON CorporationInventors: Kunio Aono, Kazumi Tsuchimichi, Kotaro Nakamura, Atsuo Minato
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Patent number: 10314636Abstract: A treatment apparatus for treating a body tissue, the treatment apparatus having a drive circuit, an electric resistance pattern, a heat transfer plate, a temperature acquisition circuit, and a controller. The controller controlling the drive circuit to supply power to the electric resistance pattern based on a target temperature of the heat transfer plate and a temperature of the electric resistance pattern acquired by the temperature acquisition circuit.Type: GrantFiled: July 31, 2015Date of Patent: June 11, 2019Assignee: OLYMPUS CORPORATIONInventor: Kotaro Nakamura
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Publication number: 20190165726Abstract: A power storage power conditioner includes an input part, a voltage-transforming part, a first input-output part, a converting part and a second input-output part. The voltage-transforming part transforms the voltage of DC power from the input part and the converting part into a second predetermined voltage. The first input-output part outputs the DC power of the voltage-transforming part to a battery unit, and inputs DC power from the battery unit. The voltage-transforming part transforms a voltage of the DC power from the first input-output part into a third predetermined voltage. The converting part converts the DC power from the input part and the voltage-transforming part into AC power. The second input-output part outputs the AC power to a power system or a load, and inputs AC power from the power system. The converting part converts the AC power from the second input-output part into DC power.Type: ApplicationFiled: September 13, 2018Publication date: May 30, 2019Applicant: OMRON CorporationInventors: Kunio AONO, Kazumi TSUCHIMICHI, Kotaro NAKAMURA, Atsuo MINATO
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Publication number: 20190160951Abstract: A current collector monitoring system in one aspect of the present disclosure is provided with: a collected current measurement unit; a collected current state determination unit; an image acquisition unit; an event recognition unit; an event determination unit; and a determination result output unit. When a state of collected current corresponds to an abnormal state, the image acquisition unit acquires an image including, within an angle of view, a collector shoe provided to a current collector.Type: ApplicationFiled: August 2, 2016Publication date: May 30, 2019Applicant: CENTRAL JAPAN RAILWAY COMPANYInventors: Kei Sakanoue, Isao Naruse, Kotaro Nakamura, Masayuki Ueno, Noriyuki Taniyama, Shigekazu Okada
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Publication number: 20190131925Abstract: The disclosure is provided to improve the accuracy of a ground fault position detected from a power conditioning system. A ground fault position calculation part (41) calculates a ground fault position (Pg) by using a power supply voltage of a solar cell string (11), a ground fault current (Ig), and a ground potential of an input terminal (N) measured by a power conditioning system (12). The ground fault position calculation part (41) sets a lower limit value of the power supply voltage to be used.Type: ApplicationFiled: September 17, 2018Publication date: May 2, 2019Applicant: OMRON CorporationInventors: Akihiko SANO, Kotaro NAKAMURA, Kenji KOBAYASHI, Kohei NAKAGAWA, Makoto IDE
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Publication number: 20190092172Abstract: Provided is a collected current monitoring device. A transformer current acquisition unit acquires a current value Ip of a current flowing through a part of a plurality of transformers. A total collected current calculation unit calculates a current value Iall of a collected current supplied by a plurality of current collectors from the current value Ip by using a following Equation (1): Iall=IpĂ—(Mall/Mp). A collected current acquisition unit acquires a current value IX of a collected current supplied by the current collector(s) other than one current collector. The collected current calculation unit calculates a current value IY of a collected current supplied by the one current collector by subtracting the current value IX from the current value Iall.Type: ApplicationFiled: March 1, 2017Publication date: March 28, 2019Inventors: Yuichi AHIKO, Kotaro NAKAMURA, Hiroki SHIMOYAMA
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Publication number: 20190092029Abstract: A liquid ejection apparatus includes a liquid tank, a liquid ejection head, and a tank holder. The liquid tank includes a displacement unit and a tank body part. The displacement unit has a liquid injection port. The tank body part has a liquid containing portion containing liquid introduced from the liquid injection port, and having a supply port supplying the liquid. The liquid ejection head ejects the liquid supplied from the supply port. The tank holder holds the liquid tank. The displacement unit is movable so as to displace the liquid injection port relative to the tank body part and the tank holder so that the liquid injection port is exposed to an exterior of the tank holder to inject the liquid into the liquid tank, while the tank body part is held in the tank holder and is not displaced relative to the tank holder.Type: ApplicationFiled: November 28, 2018Publication date: March 28, 2019Inventors: Kotaro NAKAMURA, Shun OYA