Patents by Inventor Yohei Miura
Yohei Miura 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: 20230057533Abstract: Provided is a fuel cell stack that includes a plurality of fuel cells, the fuel cells stacking an anode electrode layer, a cathode electrode layer, and a solid electrolyte layer sandwiched between the anode electrode layer and the cathode electrode layer, the plurality of fuel cells being stacked having a separator disposed therebetween. The fuel cell stack includes a fuel channel through which fuel passes, the fuel channel formed between adjacent two of the fuel cells by the separator; and a U-turn channel configured to connect the fuel channel to the anode electrode layer. The fuel channel is formed extending in a stacking surface direction of the fuel cells, and the fuel channel includes heat balance adjusting means configured to adjust heat balance of the fuel cells. The U-turn channel is formed to bend from one end of the fuel channel to the anode electrode layer.Type: ApplicationFiled: May 15, 2020Publication date: February 23, 2023Applicant: NISSAN MOTOR CO., LTD.Inventor: Yohei MIURA
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Publication number: 20210184640Abstract: A decision feedback equalizer circuit includes first and second equalizers implemented in parallel. Each equalizer includes: an adder; and a comparator configured to alternatingly perform refreshing and sampling for a differential signal output from the adder. The comparator includes: a differential amplifier configured to output a differential signal having same values in a refresh period, and output a differential signal corresponding to the differential signal output from the adder in a sampling period; and a latch circuit configured to perform a decision operation based on a comparison between two signals that form the differential signal output from the differential amplifier, and to latch a decision result. The adder in the first equalizer controls the differential signal based on the decision in the second equalizer, and the adder in the second equalizer controls the differential signal based on the decision in the first equalizer.Type: ApplicationFiled: November 30, 2020Publication date: June 17, 2021Applicant: FUJITSU LIMITEDInventor: Yohei Miura
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Patent number: 10591853Abstract: A moving device, which is included in an image forming apparatus, includes a cam, a moving body, a biasing body, a drive source and a drive transmission device. The moving body is configured to be moved by the cam. The biasing body is configured to apply a biasing force to bias the moving body toward the cam. The drive source is configured to apply a driving force to the cam. The drive transmission device is configured to transmit the driving force to the cam and includes a load applying body configured to apply a load to a rotation of the cam.Type: GrantFiled: January 24, 2018Date of Patent: March 17, 2020Assignee: Ricoh Company, Ltd.Inventors: Kenji Tomita, Kimihiro Tanaka, Yohei Miura, Hiroaki Nieda
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Patent number: 10268143Abstract: A drive device, which is included in an image forming apparatus, includes a drive source, a drive switching device configured to switch between a transmission state and a halting state, a first rotary body having a rotary shaft, a first drive transmission passage through which a driving force is transmitted to the first rotary body, a second rotary body, a second drive transmission passage through which the driving force is transmitted to the second rotary body, a drive transmission body rotatably mounted on the rotary shaft of the first rotary body, and an input drive transmission body mounted on the rotary shaft of the first rotary body and configured to input the driving force to the rotary shaft of the first rotary body, the input drive transmission body configured to rotate together with the drive transmission body as a single unit.Type: GrantFiled: December 20, 2017Date of Patent: April 23, 2019Assignee: RICOH COMPANY, LTD.Inventors: Kimihiro Tanaka, Kenji Tomita, Yohei Miura, Kentaro Uji
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Publication number: 20190115721Abstract: A laser diode control circuit includes, a control signal supply circuit that supplies a control signal including a direct current component and an alternating current component to a laser diode, an optical output signal acquisition circuit that acquires an optical output signal indicating an optical output of the laser diode according to the control signal, a phase determination circuit that determines whether a phase of the alternating current component included in the optical output signal is the same as the phase of the alternating current component included in the control signal, and a control signal determination circuit that determines to decrease the direct current component of the control signal when it is determined that the phase of the alternating current component included in the optical output signal is not the same as the phase of the alternating current component included in the control signal.Type: ApplicationFiled: October 11, 2018Publication date: April 18, 2019Applicant: FUJITSU LIMITEDInventors: Hirotomo Izumi, Shigeki Kawaai, Daisuke USUI, Yohei Miura
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Publication number: 20190074534Abstract: A fuel cell stack includes a fuel manifold and a fuel cell. The fuel cell extends from the fuel manifold. The fuel cell includes a support substrate and a plurality of electricity generating elements. The support substrate includes a gas flow pathway extending along a lengthwise direction. The plurality of electricity generating elements are disposed on the support substrate, while being disposed away from each other at intervals along the lengthwise direction. A base end-side electricity generating element disposed as gas supply-side endmost one of the plurality of electricity generating elements has an area greater than an average area of the plurality of electricity generating elements except for the base end-side electricity generating element.Type: ApplicationFiled: November 2, 2018Publication date: March 7, 2019Inventors: Yohei MIURA, Noriyuki OGASAWARA, Makoto OHMORI
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Patent number: 10054884Abstract: A fixing device, which is included in an image forming apparatus, includes a heater, a heating target body, a biasing body, a pressure body, a moving body, a drive source, and a drive transmitter. The heating target body is configured to be heated by the heater. The biasing body is configured to apply a biasing force. The pressure body is configured to be pressed by the biasing body toward the heating target body. The moving body is configured to move the pressure body away from the heating target body against the biasing force applied by the biasing body. The drive source is configured to apply a driving force. The drive transmitter is configured to transmit the driving force of the drive source to the moving body and includes a planetary gear device and a worm gear.Type: GrantFiled: May 24, 2017Date of Patent: August 21, 2018Assignee: Ricoh Company, Ltd.Inventors: Kenji Tomita, Kimihiro Tanaka, Yohei Miura
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Publication number: 20180224779Abstract: A moving device, which is included in an image forming apparatus, includes a cam, a moving body, a biasing body, a drive source and a drive transmission device. The moving body is configured to be moved by the cam. The biasing body is configured to apply a biasing force to bias the moving body toward the cam. The drive source is configured to apply a driving force to the cam. The drive transmission device is configured to transmit the driving force to the cam and includes a load applying body configured to apply a load to a rotation of the cam.Type: ApplicationFiled: January 24, 2018Publication date: August 9, 2018Applicant: Ricoh Company, Ltd.Inventors: Kenji TOMITA, Kimihiro TANAKA, Yohei MIURA, Hiroaki NIEDA
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Publication number: 20180181030Abstract: A drive device, which is included in an image forming apparatus, includes a drive source, a drive switching device configured to switch between a transmission state and a halting state, a first rotary body having a rotary shaft, a first drive transmission passage through which a driving force is transmitted to the first rotary body, a second rotary body, a second drive transmission passage through which the driving force is transmitted to the second rotary body, a drive transmission body rotatably mounted on the rotary shaft of the first rotary body, and an input drive transmission body mounted on the rotary shaft of the first rotary body and configured to input the driving force to the rotary shaft of the first rotary body, the input drive transmission body configured to rotate together with the drive transmission body as a single unit.Type: ApplicationFiled: December 20, 2017Publication date: June 28, 2018Applicant: Ricoh Company, Ltd.Inventors: Kimihiro TANAKA, Kenji TOMITA, Yohei MIURA, Kentaro UJI
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Patent number: 9847271Abstract: A semiconductor device includes: a processor having a heat sink mounted thereon; and an optical module having a heat transfer interposer, wherein the heat sink and the optical module are coupled to each other via the heat transfer interposer. And a semiconductor device includes: a semiconductor chip mounted on a substrate; a lead that covers the semiconductor chip; a heat sink installed on the lead; and an optical module coupled to the heat sink via a heat transfer interposer.Type: GrantFiled: October 27, 2016Date of Patent: December 19, 2017Assignee: FUJITSU LIMITEDInventors: Yohei Miura, Yasushi Masuda, Satoshi Ohsawa, Yoshihiro Morita
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Publication number: 20170343937Abstract: A fixing device, which is included in an image forming apparatus, includes a heater, a heating target body, a biasing body, a pressure body, a moving body, a drive source, and a drive transmitter. The heating target body is configured to be heated by the heater. The biasing body is configured to apply a biasing force. The pressure body is configured to be pressed by the biasing body toward the heating target body. The moving body is configured to move the pressure body away from the heating target body against the biasing force applied by the biasing body. The drive source is configured to apply a driving force. The drive transmitter is configured to transmit the driving force of the drive source to the moving body and includes a planetary gear device and a worm gear.Type: ApplicationFiled: May 24, 2017Publication date: November 30, 2017Applicant: Ricoh Company, Ltd.Inventors: Kenji TOMITA, Kimihiro TANAKA, Yohei MIURA
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Publication number: 20170148703Abstract: A semiconductor device includes: a processor having a heat sink mounted thereon; and an optical module having a heat transfer interposer, wherein the heat sink and the optical module are coupled to each other via the heat transfer interposer. And a semiconductor device includes: a semiconductor chip mounted on a substrate; a lead that covers the semiconductor chip; a heat sink installed on the lead; and an optical module coupled to the heat sink via a heat transfer interposer.Type: ApplicationFiled: October 27, 2016Publication date: May 25, 2017Applicant: FUJITSU LIMITEDInventors: Yohei Miura, Yasushi Masuda, Satoshi Ohsawa, YOSHIHIRO MORITA
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Patent number: 9640825Abstract: A fuel cell includes an anode, a solid electrolyte layer, a barrier layer, and a cathode. The anode includes a transition metal and an oxygen ion conductive material. In the interface region within 3 micrometers from the interface with the solid electrolyte layer of the anode after reduction, the content rate of silicon is less than or equal to 200 ppm, the content rate of phosphorous is less than or equal to 50 ppm, the content rate of chromium is less than or equal to 100 ppm, the content rate of boron is less than or equal to 100 ppm, and the content rate of sulfur is less than or equal to 100 ppm.Type: GrantFiled: March 18, 2015Date of Patent: May 2, 2017Assignee: NGK INSULATORS, LTD.Inventors: Yohei Miura, Makoto Ohmori, Ayano Kobayashi, Takafumi Terahai
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Publication number: 20170068055Abstract: An optical module connector includes a connector configured to be coupled to a package substrate, which is coupled to first solder coupled to a printed board, and to second solder coupled to the printed board, the connector being coupled to the second solder; and an optical-module substrate configured to be detachably coupled to the connector, wherein the connector configured to include a first surface to which the optical-module substrate is coupled, a second surface coupled to the package substrate, and a third surface coupled to the second solder, and wherein the first surface to which the optical-module substrate is coupled includes a fourth surface opposite the second surface and a fifth surface opposite the third surface coupled to the second solder, and wherein a first height from the second surface to the first surface is less than a second height from the third surface to the first surface.Type: ApplicationFiled: August 25, 2016Publication date: March 9, 2017Applicant: FUJITSU LIMITEDInventors: Yasushi Masuda, YOSHIHIRO MORITA, Satoshi Ohsawa, Yohei Miura
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Publication number: 20150264810Abstract: A circuit board includes: a substrate; a through hole formed in the substrate; and a connection terminal provided in the through hole; wherein the connection terminal includes a pedestal portion provided within the through hole and a pin which is provided at a center of the pedestal portion and extends from the pedestal portion toward a first surface of the substrate, so that a first end portion protrudes from the first surface.Type: ApplicationFiled: March 3, 2015Publication date: September 17, 2015Inventors: Shunji BABA, Manabu WATANABE, Kenji FUKUZONO, Satoshi OHSAWA, Tetsuro YAMADA, Akihiro WAKABAYASHI, Yasushi MASUDA, Yohei MIURA
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Publication number: 20150194692Abstract: A fuel cell includes an anode, a solid electrolyte layer, a barrier layer, and a cathode. The anode includes a transition metal and an oxygen ion conductive material. In the interface region within 3 micrometers from the interface with the solid electrolyte layer of the anode after reduction, the content rate of silicon is less than or equal to 200 ppm, the content rate of phosphorous is less than or equal to 50 ppm, the content rate of chrome is less than or equal to 100 ppm, the content rate of boron is less than or equal to 100 ppm, and the content rate of sulfur is less than or equal to 100 ppm.Type: ApplicationFiled: March 18, 2015Publication date: July 9, 2015Inventors: Yohei MIURA, Makoto OHMORI, Ayano KOBAYASHI, Takafumi TERAHAI
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Patent number: 9017898Abstract: A fuel cell (10) includes an anode (11), a solid electrolyte layer (12), a barrier layer (13), and a cathode (14). The anode (11) includes a transition metal and an oxygen ion conductive material. In the interface region (R) within 3 micrometers from the interface with the solid electrolyte layer (12) of the anode (11) after reduction, the content rate of silicon is less than or equal to 200 ppm, the content rate of phosphorous is less than or equal to 50 ppm, the content rate of chrome is less than or equal to 100 ppm, the content rate of boron is less than or equal to 100 ppm, and the content rate of sulfur is less than or equal to 100 ppm.Type: GrantFiled: April 25, 2013Date of Patent: April 28, 2015Assignee: NGK Insulators, Ltd.Inventors: Yohei Miura, Makoto Ohmori, Ayano Kobayashi, Takafumi Terahai
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Publication number: 20150084528Abstract: According to one embodiment, a power supply device includes a rectifier circuit, a smoothing capacitor, and a normally on type transistor. The rectifier circuit is configured to rectify an alternating current supplied from a voltage source. The smoothing capacitor is charged by an output current output from the rectifier circuit. The normally on type transistor is connected between the rectifier circuit and the smoothing capacitor in series and is configured to limit an output current value of the rectifier circuit during a voltage input from the voltage source to an output current value higher than an output current value of the rectifier circuit during a steady operation.Type: ApplicationFiled: March 14, 2014Publication date: March 26, 2015Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Hirokazu Otake, Noriyuki Kitamura, Yuji Takahashi, Masato Ishikawa, Yohei Miura
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Publication number: 20150084530Abstract: According to one embodiment, a power supply device includes a conductive first mounting board, a first switching element, a current control element, and a second switching element. The first switching element is mounted on the first mounting board. The current control element is mounted on the first mounting board, includes a main terminal connected to the first mounting board, is connected to the first switching element in series, and is configured to limit an electric current of the first switching element. The second switching element is connected to the current control element in series. An electric current flows to the second switching element when the first switching element is off.Type: ApplicationFiled: March 14, 2014Publication date: March 26, 2015Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Noriyuki Kitamura, Yohei Miura, Hirokazu Otake, Yuji Takahashi
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Publication number: 20150085544Abstract: A rectifying circuit according to an embodiment includes a first rectifying portion and a second rectifying portion. The first rectifying portion has a positive temperature coefficient. The second rectifying portion has a negative temperature coefficient, is connected in parallel to the first rectifying portion, and has a forward voltage-forward current curve intersecting a forward voltage-forward current curve of the first rectifying portion.Type: ApplicationFiled: March 14, 2014Publication date: March 26, 2015Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Hirokazu Otake, Noriyuki Kitamura, Yuji Takahashi, Masato Ishikawa, Yohei Miura