Patents by Inventor Nobuyuki Yokoyama
Nobuyuki Yokoyama 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: 20240120520Abstract: A decrease in output power due to a foreign matter present on a base at the time of forming a thin film solid electrolyte layer is limited, and an increase in yield even when an area of a fuel battery cell is increased, is obtained. The fuel battery cell has a membrane electrode assembly including a lower electrode layer, first and second solid electrolyte layers, and an upper electrode layer formed on a support substrate. An interface between the first and second solid electrolyte layers is flat as compared with an interface between the lower electrode layer and the solid electrolyte layer, and the second solid electrolyte layer has a thickness at which a leakage current between the first solid electrolyte layer and the second solid electrolyte layer is less than an allowable value even when an output voltage of the fuel battery cell is generated.Type: ApplicationFiled: March 31, 2021Publication date: April 11, 2024Inventors: Yoshitaka SASAGO, Noriyuki SAKUMA, Natsuki YOKOYAMA, Koji FUJISAKI, Nobuyuki MISE, Aritoshi SUGIMOTO
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Patent number: 11953508Abstract: An automatic analysis device includes a processing unit 3 which performs the treatment on a specimen before analysis of the specimen, supply equipment which supplies a reagent to a reaction vessel 11 disposed in the processing unit 3, a liquid temperature adjusting unit 1 which adjusts a temperature of the reagent supplied to the reaction vessel 11 by the supply equipment, a control unit 201, and a first temperature detection unit 4 which detects at least one temperature of a temperature of the air within the processing unit 3 and a temperature of the reagent supplied to the reaction vessel 11, in which the liquid temperature adjusting unit 1 and the control unit 201 execute temperature adjustment of the reagent based on a first temperature detected by the first temperature detection unit 4.Type: GrantFiled: October 9, 2019Date of Patent: April 9, 2024Assignee: Hitachi High-Tech CorporationInventors: Sunao Funakoshi, Takenori Okusa, Nobuyuki Isoshima, Koki Yokoyama
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Publication number: 20240113622Abstract: Provided is a controller circuit of a step-down DC/DC converter, the controller circuit including a ramp voltage generating circuit that generates a periodic ramp voltage, a clamp voltage generating circuit that generates a clamp voltage, an error amplifier that generates an error signal that depends on an error between an electrical state of the step-down DC/DC converter and a target state of the electrical state, a clamp circuit that clamps the error signal by using the clamp voltage, and a pulse width modulation comparator that compares the error signal resulting from the clamping by the clamp circuit with the ramp voltage. The ramp voltage generating circuit includes a first capacitor, a first current source, a switch, a second capacitor, and a driver circuit. The clamp voltage generating circuit includes a third capacitor, a fourth capacitor, a first resistor, and a second current source.Type: ApplicationFiled: September 21, 2023Publication date: April 4, 2024Inventors: Nobuyuki Yokoyama, Hayato Asano
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Publication number: 20240106331Abstract: Provided is a controller circuit of a buck DC/DC converter. The controller circuit includes a feedback pin to be connected to an output line of the buck DC/DC converter, a voltage divider circuit including a first resistor and a second resistor connected in series between the feedback pin and a ground, a feedback circuit that generates a pulse modulation signal to bring a feedback voltage as an output of the voltage divider circuit close to a reference voltage, and a current source that is connected to the feedback pin and supplies a constant current.Type: ApplicationFiled: September 18, 2023Publication date: March 28, 2024Inventors: Koichi Miyanaga, Hayato Asano, Nobuyuki Yokoyama
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Patent number: 11942040Abstract: In a display device having a non-rectangular display unit, occurrence of a difference in luminance between a region with a high load and a region with a low load is suppressed. A region inside the display unit is segmented into a high-load region with a high load on horizontal scanning lines (an initialization control line and a write control line) and a low-load region with a low load on horizontal scanning lines. An initialization control line and a write control line that are disposed in the high-load region are driven by a discharge driver and a scan driver, respectively. An initialization control line and a write control line that are disposed in the low-load region both are driven by, for example, the discharge driver.Type: GrantFiled: December 13, 2019Date of Patent: March 26, 2024Assignee: SHARP KABUSHIKI KAISHAInventors: Makoto Yokoyama, Nobuyuki Taya, Junichi Yamada
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Patent number: 11919048Abstract: The present invention relates to a method of cleaning an optical film-thickness measuring system used for measuring a film thickness of a substrate, such as a wafer, while polishing the substrate. The method includes: cleaning an optical sensor head (7) by supplying a rinsing liquid into a through-hole (51) formed in a polishing pad (2) on a polishing table (3) before or after polishing of a substrate (W) with use of slurry, the optical sensor head (7) being located below the through-hole (51); and discharging the rinsing liquid from the through-hole (51) through a drain line (54).Type: GrantFiled: December 16, 2019Date of Patent: March 5, 2024Assignee: EBARA CORPORATIONInventors: Nobuyuki Takahashi, Toru Maruyama, Taichi Yokoyama, Zhongxin Wen
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Publication number: 20240048039Abstract: Provided is a power management circuit including power supply circuits of a plurality of channels, a register that stores a plurality of digital values corresponding to the power supply circuits of the plurality of channels, a plurality of voltage monitor circuits corresponding to the power supply circuits of the plurality of channels, each of the plurality of voltage monitor circuits comparing an output voltage of a corresponding one of the power supply circuits with a threshold voltage corresponding to a corresponding one of the plurality of digital values, a control logic that sweeps the plurality of digital values stored in the register, while maintaining the digital values to be the same value in a calibration mode, and a non-volatile memory that stores, for each of the plurality of channels, a digital value when a determination result of the voltage monitor circuit changes.Type: ApplicationFiled: August 2, 2023Publication date: February 8, 2024Inventors: Kenji Yamada, Nobuyuki Yokoyama
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Publication number: 20230074916Abstract: There has been demand for a titanium oxide organosol that has a high transparency and a high refractive index and that also exhibits an excellent viscosity stability over time. The rutile-type titanium oxide organosol according to the present invention comprises a silane coupling agent, a basic additive acting as a deflocculant, a water-insoluble solvent, and rutile-type titanium oxide particles that have been surface-treated with a hydrous oxide of at least one metal species selected from Zr, Ce, Sn, and Fe, the rutile-type titanium oxide organosol being characterized in that the Ti ratio contained in the colloidal particles in the rutile-type titanium oxide organosol is at least 60 mass% when calculated as the oxide, and the ratio of metal species at the colloidal particle surface derived from x-ray photoelectron spectroscopy is 20-50 mass%.Type: ApplicationFiled: March 17, 2021Publication date: March 9, 2023Applicant: TAYCA CORPORATIONInventors: Ryouhei Mishima, Nobuyuki Yokoyama
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Publication number: 20190157509Abstract: A GaN substrate that comprises a GaN single crystal having a Ga face and a N face on surfaces thereof, wherein the Ga face includes: a flat face portion; and a curved face portion that surrounds a circumference of the flat face portion, and wherein an off-angle distribution of the N face is larger than an off-angle distribution of the Ga face.Type: ApplicationFiled: November 6, 2018Publication date: May 23, 2019Inventors: Isao TASHIRO, Hidenao KATAOKA, Nobuyuki YOKOYAMA, Takeshi OHMORI
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Patent number: 10246796Abstract: A RAMO4 substrate containing an RAMO4 base material part containing a single crystal represented by the general formula RAMO4 (wherein R represents one or a plurality of trivalent elements selected from a group of elements including: Sc, In, Y, and a lanthanoid element, A represents one or a plurality of trivalent elements selected from a group of elements including: Fe(III), Ga, and Al, and M represents one or a plurality of divalent elements selected from a group of elements including: Mg, Mn, Fe(II), Co, Cu, Zn, and Cd), the RAMO4 base material part having a beveled portion at an edge portion thereof.Type: GrantFiled: February 10, 2017Date of Patent: April 2, 2019Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Isao Tashiro, Hidenao Kataoka, Yoshio Okayama, Nobuyuki Yokoyama, Yoshifumi Takasu
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Patent number: 9865470Abstract: A processing apparatus includes a rotary table that causes a workpiece to rotate around a rotary axis, a roller-shaped member that rotates on an axis orthogonal to the rotary axis of the rotary table, a vertical driving section that is driven in a direction of the rotary axis of the rotary table so as to bring the roller-shaped member and the workpiece into contact with each other, an ultraviolet ray irradiation source that irradiates a portion between the roller-shaped member and the workpiece with an ultraviolet ray, a polishing material that is supplied to the portion between the roller-shaped member and the workpiece, and a light scattering medium that is supplied to the portion between the roller-shaped member and the workpiece and scatters an ultraviolet ray from the ultraviolet ray irradiation source.Type: GrantFiled: April 15, 2016Date of Patent: January 9, 2018Assignee: Panasonic CorporationInventors: Yoshifumi Takasu, Nobuyuki Yokoyama, Isao Tashiro, Nobuyuki Kamikihara
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Publication number: 20170275778Abstract: A RAMO4 substrate containing an RAMO4 base material part containing a single crystal represented by the general formula RAMO4 (wherein R represents one or a plurality of trivalent elements selected from a group of elements including: Sc, In, Y, and a lanthanoid element, A represents one or a plurality of trivalent elements selected from a group of elements including: Fe(III), Ga, and Al, and M represents one or a plurality of divalent elements selected from a group of elements including: Mg, Mn, Fe(II), Co, Cu, Zn, and Cd), the RAMO4 base material part having a beveled portion at an edge portion thereof.Type: ApplicationFiled: February 10, 2017Publication date: September 28, 2017Inventors: ISAO TASHIRO, HIDENAO KATAOKA, YOSHIO OKAYAMA, NOBUYUKI YOKOYAMA, YOSHIFUMI TAKASU
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Publication number: 20170278754Abstract: A method for producing a Group III nitride crystal, includes: preparing an RAMO4 substrate containing a single crystal represented by the general formula RAMO4 (wherein R represents one or a plurality of trivalent elements selected from a group consisting of Sc, In, Y, and a lanthanoid element, A represents one or a plurality of trivalent elements selected from a group consisting of Fe(III), Ga, and Al, and M represents one or a plurality of divalent elements selected from a group consisting of Mg, Mn, Fe(II), Co, Cu, Zn, and Cd) and having a notch on a side portion thereof; growing a Group III nitride crystal on the RAMO4 substrate; and cleaving the RAMO4 substrate from the notch.Type: ApplicationFiled: February 9, 2017Publication date: September 28, 2017Inventors: ISAO TASHIRO, HIDENAO KATAOKA, YOSHIO OKAYAMA, NOBUYUKI YOKOYAMA, YOSHIFUMI TAKASU
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Publication number: 20160379838Abstract: A processing apparatus includes a rotary table that causes a workpiece to rotate around a rotary axis, a roller-shaped member that rotates on an axis orthogonal to the rotary axis of the rotary table, a vertical driving section that is driven in a direction of the rotary axis of the rotary table so as to bring the roller-shaped member and the workpiece into contact with each other, an ultraviolet ray irradiation source that irradiates a portion between the roller-shaped member and the workpiece with an ultraviolet ray, a polishing material that is supplied to the portion between the roller-shaped member and the workpiece, and a light scattering medium that is supplied to the portion between the roller-shaped member and the workpiece and scatters an ultraviolet ray from the ultraviolet ray irradiation source.Type: ApplicationFiled: April 15, 2016Publication date: December 29, 2016Inventors: YOSHIFUMI TAKASU, NOBUYUKI YOKOYAMA, ISAO TASHIRO, NOBUYUKI KAMIKIHARA
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Patent number: 8137596Abstract: A transparent titanium oxide in which the titanium oxide particles have been coated with a hydrated metal oxide having no photocatalytic activity in order to block photocatalytic activity. Hydrous titanium oxide sol particles are coated with a layer comprising a hydrated oxide of silicon. The coating layer can further contain a hydrated oxide of at least one metal selected among tin, aluminum, and zirconium and a hydrated oxide of antimony. Also provided are a process for producing a sol of surface-coated transparent titanium oxide and a coating composition containing a sol of surface-coated transparent titanium oxide.Type: GrantFiled: September 10, 2007Date of Patent: March 20, 2012Assignee: Tayca CorporationInventor: Nobuyuki Yokoyama
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Publication number: 20100148135Abstract: A transparent titanium oxide in which the titanium oxide particles have been coated with a hydrated metal oxide having no photocatalytic activity in order to block photocatalytic activity. Hydrous titanium oxide sol particles are coated with a layer comprising a hydrated oxide of silicon. The coating layer can further contain a hydrated oxide of at least one metal selected among tin, aluminum, and zirconium and a hydrated oxide of antimony. Also provided are a process for producing a sol of surface-coated transparent titanium oxide and a coating composition containing a sol of surface-coated transparent titanium oxide.Type: ApplicationFiled: September 10, 2007Publication date: June 17, 2010Applicant: TAYCA CORPORATIONInventor: Nobuyuki Yokoyama
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Publication number: 20050152003Abstract: What is disclosed is: an image processing apparatus comprising: a memory section for containing plural printing data made by plural applications, an input section for inputting information of laying out said printing data, an analyzing section for analyzing said information of laying out said printing data, and a laying out control section for reading out said printing data from said memory section and for laying out said printing data on a recording medium.Type: ApplicationFiled: January 5, 2005Publication date: July 14, 2005Inventor: Nobuyuki Yokoyama
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Patent number: 4721496Abstract: A toothed belt with improved durability, comprising: a back surface section and tooth section that are made of a hydrogenated acrylonitrile-butadiene copolymer (H-NBR) with a hydrogenation rate of 80% or more, a tooth cloth that covers said tooth section and tooth lands positioned between the adjacent tooth sections, said tooth cloth being made of industrial nylon raw fiber with a viscosity relative to sulfuric acid of 2.6 to 2.8, a tensile strength of 5 g/denier or more, and a fineness of single fibers of 5 denier or less, and a plurality of core fibers with a core diameter of 0.9 to 1.1 mm and a ratio of said core diameter to said tooth cloth thickness in the range of 1.8 to 5.0, said core fibers being made of glass fiber filaments with a first twist number of 1.7 to 2.6 twists/inch, and a final twist number of 1.8 to 2.3 twists/inch, twisted together.Type: GrantFiled: November 5, 1986Date of Patent: January 26, 1988Assignee: Unitta Co., Ltd.Inventors: Nobuyuki Yokoyama, Shigehiro Isshiki
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Patent number: 4713006Abstract: An artificial tooth root is divided into a tooth root body and a root holder. The material for the artificial tooth root body is selected in consideration of its strength. The outer surface of the root holder that is in contact with the alveolar bone is formed of a biologically activated material for providing strong adhesion between the root holder and the alveolar bone. An impact reducing material is provided between the artificial tooth root body and the root holder to reduce the impact force placed on the tooth root body so that the force applied to the alveolar bone portion is reduced.Type: GrantFiled: March 26, 1986Date of Patent: December 15, 1987Assignee: Olympus Optical Co., Ltd.Inventors: Yasuharu Hakamatsuka, Nobuyuki Yokoyama