Patents by Inventor Yutaka Yagi
Yutaka Yagi 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: 11926561Abstract: To provide a crystallized glass substrate including a surface with a compressive stress layer, in which a compressive stress CS (MPa) on an outermost surface of the compressive stress layer is 400 to 1400 MPa, and DOL50%/DOLzero is 0.30 or more, where DOL50% (?m) is a depth at which the value of the compressive stress is 50% of the CS and DOLzero (?m) is a depth at which the value of the compressive stress is 0 MPa.Type: GrantFiled: August 9, 2018Date of Patent: March 12, 2024Assignee: OHARA INC.Inventors: Toshitaka Yagi, Kohei Ogasawara, Yuki Motoshima, Reika Kojima, Yutaka Yamashita, Naoyuki Goto
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Patent number: 11926559Abstract: To provide a crystallized glass substrate including a surface with a compressive stress layer, in which a stress depth DOLzero of the compressive stress layer, at which the compressive stress is 0 MPa, is 45 to 200 ?m, a compressive stress CS on an outermost surface of the compressive stress layer is 400 to 1400 MPa, and CS×DOLzero, which is a product of the compressive stress CS on the outermost surface and the stress depth DOLzero (?m), is 4.8×104 or more.Type: GrantFiled: January 13, 2023Date of Patent: March 12, 2024Assignee: OHARA INC.Inventors: Toshitaka Yagi, Kohei Ogasawara, Yuki Motoshima, Reika Kojima, Yutaka Yamashita, Naoyuki Goto
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Patent number: 11926554Abstract: To provide a crystallized glass substrate including a surface with a compressive stress layer, where a stress depth DOLzero of the compressive stress layer, at which the compressive stress is 0 MPa, is 45 to 200 ?m, a compressive stress CS on an outermost surface of the compressive stress layer is 400 to 1400 MPa, and a central stress CT determined by using curve analysis is 55 to 300 MPa.Type: GrantFiled: January 13, 2023Date of Patent: March 12, 2024Assignee: OHARA INC.Inventors: Toshitaka Yagi, Kohei Ogasawara, Yuki Motoshima, Reika Kojima, Yutaka Yamashita, Naoyuki Goto
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Patent number: 11926562Abstract: To provide a crystallized glass substrate including a surface with a compressive stress layer, in which, CS is 400 to 1400 MPa and CT×(T?2×DOLzero)/CS×DOLzero is 0.60 or more, where CS (MPa) denotes a compressive stress on an outermost surface of the compressive stress layer, DOLzero (?m) denotes a stress depth of the compressive stress layer at which the compressive stress is 0 MPa, CT (MPa) denotes a central stress determined by curve analysis, and T (?m) denotes a thickness of the substrate.Type: GrantFiled: August 9, 2018Date of Patent: March 12, 2024Assignee: OHARA INC.Inventors: Toshitaka Yagi, Kohei Ogasawara, Yuki Motoshima, Reika Kojima, Yutaka Yamashita, Naoyuki Goto
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Patent number: 11895759Abstract: An induction heating apparatus is provided. The induction heating apparatus includes a heating coil configured to heat an object to be heated, a full-bridge type inverter configured to supply power to the heating coil, a capacitor provided between an intermediate node of one arm of the inverter and one end of the heating coil, and a first relay provided between the intermediate node and the other end of the heating coil 30. An intermediate node of the other arm of the inverter and an intermediate point of the heating coil are connected through a first wire. The induction heating apparatus includes a processor configured to open or close the first relay based on an impedance of the object to be heated.Type: GrantFiled: March 4, 2021Date of Patent: February 6, 2024Assignee: Samsung Electronics Co., Ltd.Inventors: Masashi Sasagawa, Masaki Ono, Masayuki Otawara, Nobuharu Nishikoori, Taro Yoshida, Tomoyuki Kanagawa, Yutaka Yagi
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Publication number: 20230403767Abstract: An electromagnetic induction device including a wireless power transmission unit including an induction coil configured to generate a magnetic flux in an up-down direction to heat an external device located above the indication coil by induction heating, and a communication unit including a communication coil configured to output a carrier wave, and a relay circuit configured to resonate at a frequency of the carrier wave, to wirelessly communicate with the external device.Type: ApplicationFiled: August 30, 2023Publication date: December 14, 2023Applicant: Samsung Electronics Co., Ltd.Inventors: Seisaku OOSAKO, Yutaka YAGI
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Publication number: 20230403766Abstract: A heating device for tracking a resonance frequency includes a heating coil for heating a cooking appliance, a parallel resonance circuit including an inductor including the heating coil and a resonance capacitor resonating with the inductor, an inverter unit for supplying power to the parallel resonance circuit, a first current sensor for detecting an output current supplied from the inverter unit to the parallel resonance circuit, and a processor for controlling a driving frequency of the inverter unit so that a peak value of the output current detected by the first current sensor is smaller than a predetermined first threshold value.Type: ApplicationFiled: August 25, 2023Publication date: December 14, 2023Inventors: Nobuharu NISHIKOORI, Masayuki OTAWARA, Tomoyuki KANAGAWA, Masashi SASAGAWA, Masaki ONO, Yutaka YAGI, Taro YOSHIDA
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Patent number: 11800606Abstract: An induction heating cooker for achieving high output of power and small thickness is provided. The induction heating cooker includes a main body provided at an upper side with a top plate, a heating coil to induction-heat a heating object loaded on the top plat, and a blower device configured to draw external air into the main body and blow the air into the heating coil. The heating coil and the blower device are accommodated in the main body. The main body is provided therein with a first flow path allowing air blown by the blowing device to be supplied toward the heating coil from an outer periphery side and a second flow path allowing air blown by the blowing device to be supplied toward the heating coil from a lower side.Type: GrantFiled: November 24, 2020Date of Patent: October 24, 2023Assignee: Samsung Electronics Co., Ltd.Inventors: Masashi Sasagawa, Masayuki Ohtawara, Nobuharu Nishikoori, Taro Yoshida, Tomoyuki Kanagawa, Yutaka Yagi, Masaki Ono
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Patent number: 11751291Abstract: An induction heating apparatus is provided. The induction heating apparatus includes a heating coil, an inverter, a current sensor configured to measure a driving current supplied from the inverter to the heating coil, and a controller configured to provide a drive signal to the inverter to allow the driving current to follow a target current based on a user input. The controller reduces a driving duty of the drive signal based on the driving current exceeding a predetermined reference current, and the controller provides a drive signal to the inverter to allow the driving current to follow a current less than the target current, based on the driving current being less than or equal to the predetermined reference current after reducing the driving duty of the drive signal.Type: GrantFiled: January 15, 2021Date of Patent: September 5, 2023Assignee: Samsung Electronics Co., Ltd.Inventors: Tomoyuki Kanagawa, Masaki Ono, Masashi Sasagawa, Masayuki Otawara, Nobuhara Nishikoori, Taro Yoshida, Yutaka Yagi
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Patent number: 11628650Abstract: A composite sandwich panel assembly including an open area core, a high gloss surface sheet, and a structural skin. The open are core defines a plurality of pores and has a first face and an opposing second face. The high gloss surface sheet is adhered to the first face of the open area core by a first adhesive layer. The high gloss surface sheet has a high gloss surface. The structural skin is adhered to the second face of the open area core by a second adhesive layer. A process for forming the composite sandwich panel assembly includes positioning the high gloss surface sheet, joining the first face of the open area core to the high gloss surface sheet with a first adhesive layer intermediate therebetween, and joining the structural skin to the second face of the open area core with a second adhesive layer intermediate therebetween.Type: GrantFiled: November 3, 2019Date of Patent: April 18, 2023Assignee: Teijin Automotive Technologies, Inc.Inventors: Patrick Durham, Yuhei Konagai, Yutaka Yagi, Matthew Plauman, Evan Freeman-Gibb, Hugh Foran
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Publication number: 20220024183Abstract: A composite sandwich panel assembly including an open area core, a high gloss surface sheet, and a structural skin. The open are core defines a plurality of pores and has a first face and an opposing second face. The high gloss surface sheet is adhered to the first face of the open area core by a first adhesive layer. The high gloss surface sheet has a high gloss surface. The structural skin is adhered to the second face of the open area core by a second adhesive layer. A process for forming the composite sandwich panel assembly includes positioning the high gloss surface sheet, joining the first face of the open area core to the high gloss surface sheet with a first adhesive layer intermediate therebetween, and joining the structural skin to the second face of the open area core with a second adhesive layer intermediate therebetween.Type: ApplicationFiled: November 3, 2019Publication date: January 27, 2022Applicant: CONTINENTAL STRUCTURAL PLASTICS, INC.Inventors: Patrick Durham, Yuhei Konagai, Yutaka Yagi, Matthew Plauman, Evan Freeman-Gibb, Hugh Foran
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Publication number: 20210298134Abstract: An induction heating apparatus is provided. The induction heating apparatus includes a heating coil configured to heat an object to be heated, a full-bridge type inverter configured to supply power to the heating coil, a capacitor provided between an intermediate node of one arm of the inverter and one end of the heating coil, and a first relay provided between the intermediate node and the other end of the heating coil 30. An intermediate node of the other arm of the inverter and an intermediate point of the heating coil are connected through a first wire. The induction heating apparatus includes a processor configured to open or close the first relay based on an impedance of the object to be heated.Type: ApplicationFiled: March 4, 2021Publication date: September 23, 2021Inventors: Masashi SASAGAWA, Masaki ONO, Masayuki OTAWARA, Nobuharu NISHIKOORI, Taro YOSHIDA, Tomoyuki KANAGAWA, Yutaka YAGI
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Patent number: 11077812Abstract: An energy-absorbing assembly includes a housing and a plurality of discrete energy-absorbing elements. The housing includes a first wall and a second wall. The first wall and the second wall are spaced apart from one another to at least partially define an interior compartment. Each element of the plurality of energy-absorbing elements includes a polymer and a plurality of reinforcing fibers. The plurality of energy-absorbing elements is at least partially disposed within the interior compartment and fixed to the housing. Each energy-absorbing element of the plurality of energy-absorbing elements includes an elongated hollow structure extending between a first end and a second end. Each elongated hollow structure defines a longitudinal axis extending nonparallel to at least one of the first wall and the second wall. In various alternative aspects, each energy-absorbing element may include a transverse wall.Type: GrantFiled: February 27, 2018Date of Patent: August 3, 2021Assignees: GM GLOBAL TECHNOLOGY OPERATIONS LLC, CONTINENTAL STRUCTURAL PLASTICS, INCInventors: William R. Rodgers, Venkateshwar R. Aitharaju, Terrence Wathen, Yutaka Yagi
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Publication number: 20210227643Abstract: An induction heating device using a resonance circuit method and a control method thereof that are capable of preventing occurrence of overcurrent even when an object is moved are provided. The induction heating device for heating an object includes a resonance circuit including a heating coil and a condenser, an inverter configured to supply power to the resonance circuit, a detector configure to detect a value related to a movement of the object, and at least one processor configured to identify whether the object is moved based on the value detected by the detector, and upon determining that the object is moved, lower a driving frequency of the inverter and an output of the inverter.Type: ApplicationFiled: January 14, 2021Publication date: July 22, 2021Inventors: Taro YOSHIDA, Masaki ONO, Masashi SASAGAWA, Masayuki OTAWARA, Nobuharu NISHIKOORI, Tomoyuki KANAGAWA, Yutaka YAGI
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Publication number: 20210219390Abstract: An induction heating apparatus is provided. The induction heating apparatus includes a heating coil, an inverter, a current sensor configured to measure a driving current supplied from the inverter to the heating coil, and a controller configured to provide a drive signal to the inverter to allow the driving current to follow a target current based on a user input. The controller reduces a driving duty of the drive signal based on the driving current exceeding a predetermined reference current, and the controller provides a drive signal to the inverter to allow the driving current to follow a current less than the target current, based on the driving current being less than or equal to the predetermined reference current after reducing the driving duty of the drive signal.Type: ApplicationFiled: January 15, 2021Publication date: July 15, 2021Inventors: Tomoyuki KANAGAWA, Masaki ONO, Masashi SASAGAWA, Masayuki OTAWARA, Nobuhara NISHIKOORI, Taro YOSHIDA, Yutaka YAGI
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Publication number: 20210168912Abstract: An induction heating cooker for achieving high output of power and small thickness is provided. The induction heating cooker includes a main body provided at an upper side with a top plate, a heating coil to induction-heat a heating object loaded on the top plat, and a blower device configured to draw external air into the main body and blow the air into the heating coil. The heating coil and the blower device are accommodated in the main body. The main body is provided therein with a first flow path allowing air blown by the blowing device to be supplied toward the heating coil from an outer periphery side and a second flow path allowing air blown by the blowing device to be supplied toward the heating coil from a lower side.Type: ApplicationFiled: November 24, 2020Publication date: June 3, 2021Inventors: Masashi SASAGAWA, Masayuki OHTAWARA, Nobuharu NISHIKOORI, Taro YOSHIDA, Tomoyuki KANAGAWA, Yutaka YAGI, Masaki ONO
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Publication number: 20200338546Abstract: Provided is a fluid flow-passage device in which the flow passage length of each of a plurality of fluid flow-passages can be increased even if the plurality of fluid flow-passages are formed so as to extend in parallel to each other, and in which the inside of each of the plurality of fluid flow-passages can be easily cleaned. In the fluid flow-passage device, a plurality of fluid flow-passages which extend in parallel to each other and through which a fluid is made to flow are disposed. The fluid flow-passage device comprises: a body having a plurality of substrates that are laminated in a prescribed lamination direction; and a plurality of lids, each of which can be attached to and detached from the body.Type: ApplicationFiled: April 2, 2018Publication date: October 29, 2020Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)Inventors: Tomohiro OZONO, Yutaka YAGI, Koji NOISHIKI
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Publication number: 20190263342Abstract: An energy-absorbing assembly includes a housing and a plurality of discrete energy-absorbing elements. The housing includes a first wall and a second wall. The first wall and the second wall are spaced apart from one another to at least partially define an interior compartment. Each element of the plurality of energy-absorbing elements includes a polymer and a plurality of reinforcing fibers. The plurality of energy-absorbing elements is at least partially disposed within the interior compartment and fixed to the housing. Each energy-absorbing element of the plurality of energy-absorbing elements includes an elongated hollow structure extending between a first end and a second end. Each elongated hollow structure defines a longitudinal axis extending nonparallel to at least one of the first wall and the second wall. In various alternative aspects, each energy-absorbing element may include a transverse wall.Type: ApplicationFiled: February 27, 2018Publication date: August 29, 2019Inventors: William R. RODGERS, Venkateshwar R. AITHARAJU, Terrence WATHEN, Yutaka YAGI
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Patent number: 10293770Abstract: Provided is a load-carrying or non-load carrying structural component for a vehicle having improved impact resistance, such as a gas tank protection shield, an underbody shield, a structural panel, an interior floor, a floor pan, a roof, an exterior surface, a storage area, a glove box, a console box, a trunk, a trunk floor, a truck bed, and combinations thereof. The component has a support structure with ridges, each spaced apart from one another at predetermined intervals, to form a corrugated surface capable of load-carrying. The ridges are longitudinally extending, raised ridges. The corrugated designs provide support structures that are impact resistant.Type: GrantFiled: April 6, 2017Date of Patent: May 21, 2019Assignees: GM Global Technology Operations LLC, Teijin LimitedInventors: John N. Owens, Mark A. Voss, Bhavesh Shah, Venkateshwar R. Aitharaju, Chris James Tadeusz Wisniewski, Yutaka Yagi, Tsukasa Arai
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Patent number: 9878489Abstract: Friction-weld assemblies and methods of spin-welding are provided, where the components being joined are polymeric components. Designs provided for the polymeric components enable the use of relatively low speeds and pressures to achieve superior friction weld joints between the components. Further, large surface area polymeric components can be successfully friction welded with such designs. In certain variations, at least one polymeric component has a weld surface with a plurality of surface features that are concave (e.g., grooves) or convex. In other variations, the first component in the weld region has a distinct non-complementary shape from the second component, thus creating a progressive advancing weld line that avoids high temperatures that might incur damage to the polymeric component and weld joint. Such component designs additionally provide for improved flash management at the weld joint.Type: GrantFiled: December 18, 2014Date of Patent: January 30, 2018Assignees: TEIJIN LIMITEDInventors: Ingrid A. Rousseau, Yuhei Konagai, Yutaka Yagi