Patents by Inventor Hiroyuki Otsuka

Hiroyuki Otsuka 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).

  • Patent number: 11901475
    Abstract: The present invention is a method for manufacturing a substrate for a solar cell composed of a single crystal silicon, including the steps of: producing a silicon single crystal ingot; slicing a silicon substrate from the silicon single crystal ingot; and subjecting the silicon substrate to low temperature thermal treatment at a temperature of 800° C. or more and less than 1200° C., wherein the silicon single crystal ingot or the silicon substrate is subjected to high temperature thermal treatment at a temperature of 1200° C. or more for 30 seconds or more before the low temperature thermal treatment. As a result, it is possible to provide a method for manufacturing a substrate for a solar cell that can prevent decrease in the minority carrier lifetime of the substrate even when the substrate has higher oxygen concentration.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: February 13, 2024
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Hiroyuki Otsuka, Shozo Shirai
  • Patent number: 11887762
    Abstract: A soft magnetic metal powder comprising soft magnetic metal particles including Fe, wherein a surface of the soft magnetic metal particle is covered by a coating part having an insulation property, and the coating part includes a soft magnetic metal fine particle.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: January 30, 2024
    Assignee: TDK CORPORATION
    Inventors: Satoko Mori, Hiroyuki Matsumoto, Kenji Horino, Kazuhiro Yoshidome, Takuma Nakano, Seigo Tokoro, Shota Otsuka, Toru Ujiie, Kentaro Mori
  • Patent number: 11868036
    Abstract: The present invention provides a transmissive screen including a light control layer, the screen being reduced in reflection scattering toward an image source, and an image display apparatus using the transmissive screen.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: January 9, 2024
    Assignee: NITTO DENKO CORPORATION
    Inventors: Masanori Otsuka, Hiroyuki Takemoto
  • Patent number: 11859260
    Abstract: A steel sheet has a predetermined chemical composition, in which a metallographic structure in a surface layer region ranging from a surface to a position of 20 ?m from the surface in a sheet thickness direction consists of ferrite and a secondary phase having a volume fraction of 1.0% to 15.0%, the metallographic structure in an internal region ranging from a position of more than 20 ?m from the surface in the sheet thickness direction to a ¼ thickness position from the surface in the sheet thickness direction consists of ferrite and a secondary phase having a volume fraction of 5.0% to 25.0%, the volume fraction of the secondary phase in the surface layer region is less than the volume fraction of the secondary phase in the internal region, and in the surface layer region, the average grain size of the secondary phase is 0.5 ?m to 4.0 ?m.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: January 2, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Masahiro Kubo, Hiroyuki Kawata, Masahiro Saito, Kenichiro Otsuka, Masafumi Azuma
  • Patent number: 11860338
    Abstract: Provided is an optical film with a resin substrate adhered to an optically anisotropic layer and suppression of occurrence of optical defects in the optically anisotropic layer. The optical film has a resin substrate having an alignment regulating force and an optically anisotropic layer arranged thereon, in which the optically anisotropic layer contains a liquid crystal compound and a compound having a heteroatom different from the liquid crystal compound, and in a case where a surface of the optical film on an optically anisotropic layer side thereof is a first surface and a surface of the optical film on a resin substrate side thereof is a second surface, and components of the optical film in a depth direction are analyzed by time-of-flight secondary ion mass spectrometry while irradiating the optical film with an ion beam from the first surface toward the second surface, the obtained profile satisfies a predetermined requirement.
    Type: Grant
    Filed: February 14, 2022
    Date of Patent: January 2, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Akira Maruyama, Keisuke Kodama, Tetsuro Otsuka, Hiroyuki Hagio, Yuta Takahashi, Shinpei Yoshida, Satoshi Yanokuchi
  • Publication number: 20230409176
    Abstract: A safety design support system includes a display control unit that causes a display means to display main function design information in which items related to a main function of a product to be designed are hierarchically ordered, and safety design information in which items related to safety design of the product are hierarchically ordered. In accordance with change or addition of an item of the main function design information, the change or addition being made by a user's input operation, the display control unit causes the display means to display instruction information that prompts the user to carry out a next input operation.
    Type: Application
    Filed: March 31, 2023
    Publication date: December 21, 2023
    Inventors: Natsumi WATANABE, Masaya ITOH, Hiroyuki YAMADA, Satoshi OTSUKA
  • Publication number: 20230408972
    Abstract: An image forming apparatus includes a fixing device, a temperature detector, and processing circuitry. The fixing device fixes a toner image on a surface of a sheet by heating of a heater. The temperature detector detects an internal temperature of the image forming apparatus. The processing circuitry switches a continuous print mode to an intermittent print mode when the internal temperature is equal to or higher than a first execution temperature during the continuous print mode. The processing circuitry cancels the intermittent print mode and switches to the continuous print mode when the internal temperature is equal to or lower than a first cancellation temperature. The processing circuitry causes the heater to stop heating the fixing device in the intermittent print mode when the internal temperature is higher than the first cancellation temperature even after a predetermined time has elapsed since a start of the intermittent print mode.
    Type: Application
    Filed: May 16, 2023
    Publication date: December 21, 2023
    Inventors: Taira OTSUKA, Hiroyuki SUGIYAMA, Takuya SESHITA
  • Patent number: 11842949
    Abstract: Semiconductor device A1 includes: first terminal 201A and second terminal 201B; first switching element 1A including first gate electrode 12A, first source electrode 13A and first drain electrode 14A; and second switching element 1B including second gate electrode 12B, second source electrode 13B and second drain electrode 14B. First switching element 1A and second switching element 1B are connected in series to each other between first terminal 201A and second terminal 201B. Semiconductor device A1 includes first capacitor 3A connected in parallel to first switching element 1A and second switching element 1B between first terminal 201A and second terminal 201B. First switching element 1A and second switching element 1B are aligned in y direction. First capacitor 3A overlaps with at least one of first switching element 1A and second switching element 1B as viewed in z direction. These arrangements serve to suppress surge voltage.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: December 12, 2023
    Assignee: ROHM CO., LTD.
    Inventors: Atsushi Yamaguchi, Hiroyuki Sakairi, Takukazu Otsuka
  • Publication number: 20230395346
    Abstract: An electromagnetic relay includes a fixed terminal, a fixed contact, a movable contact, a movable contact piece, and a dust collecting mechanism. The fixed contact is connected to the fixed terminal. The movable contact faces the fixed contact. The movable contact piece is connected to the movable contact. The movable contact piece is movable between a closed position at which the movable contact is in contact with the fixed contact and an open position at which the movable contact is separated from the fixed contact. The dust collecting mechanism is disposed adjacent to the fixed contact and the movable contact. The dust collecting mechanism generates a second negative pressure greater than a first negative pressure generated between the fixed contact and the movable contact when the movable contact piece moves from the closed position to the open position.
    Type: Application
    Filed: May 29, 2023
    Publication date: December 7, 2023
    Inventors: Kohei OTSUKA, Ayata HORIE, Hiroyuki IWASAKA, Ryota MINOWA, Shinichi OGAWA
  • Patent number: 11830638
    Abstract: A covered electrical wire comprises a conductor and an insulating covering layer provided outside the conductor, the conductor being a stranded wire composed of a plurality of copper alloy wires composed of a copper alloy and twisted together, and having a wire diameter of 0.5 mm or less, the copper alloy containing Fe in an amount of 0.1% by mass or more and 1.6% by mass or less, P in an amount of 0.05% by mass or more and 0.7% by mass or less, and one or more elements selected from Ni, Al, Cr and Co in an amount of 0.01% by mass or more and 0.7% by mass or less in total, with a balance being Cu and impurities.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: November 28, 2023
    Assignees: Sumitomo Electric Industries, Ltd., Sumitomo Wiring Systems, Ltd., AutoNetworks Technologies, Ltd.
    Inventors: Kei Sakamoto, Akiko Inoue, Tetsuya Kuwabara, Yusuke Oshima, Minoru Nakamoto, Kazuhiro Nanjo, Taichiro Nishikawa, Yoshihiro Nakai, Yasuyuki Otsuka, Fumitoshi Imasato, Hiroyuki Kobayashi
  • Publication number: 20230341721
    Abstract: According to the present invention, provided is a PDLC film, which includes a PDLC layer excellent in thickness uniformity and is suppressed from causing liquid crystal leakage from the PDLC layer. A method of producing a polymer dispersed liquid crystal film of the present invention includes: applying, to a first transparent conductive film, an emulsion including a solvent, and polymer particles and liquid crystal particles dispersed in the solvent to form an applied layer; drying the applied layer to form a polymer dispersed liquid crystal layer containing a polymer matrix and the liquid crystal particles dispersed in the polymer matrix; and laminating a second transparent conductive film on the polymer dispersed liquid crystal layer, wherein the polymer particles include first polymer particles and second polymer particles, and wherein an average particle diameter of the second polymer particles is larger than an average particle diameter of the first polymer particles.
    Type: Application
    Filed: March 29, 2021
    Publication date: October 26, 2023
    Inventors: Hiroyuki TAKEMOTO, Jin YOSHIKAWA, Masanori OTSUKA, Mariko HIRAI
  • Patent number: 11798719
    Abstract: A soft magnetic metal powder having soft magnetic metal particles, wherein a surface of the soft magnetic metal particle is covered by a coating part, the coating part has a first coating part, a second coating part, and a third coating part in this order from the surface of the soft magnetic metal particle towards outside, the first coating part includes oxides of Si as a main component, the second coating part includes oxides of Fe as a main component, and the third coating part includes a compound of at least one element selected from the group consisting of P, Si, Bi, and Zn.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: October 24, 2023
    Assignee: TDK CORPORATION
    Inventors: Kazuhiro Yoshidome, Hiroyuki Matsumoto, Kenji Horino, Satoko Mori, Takuma Nakano, Seigo Tokoro, Shota Otsuka, Toru Ujiie, Kentaro Mori
  • Patent number: 11784017
    Abstract: An electromagnetic relay includes a pair of fixed terminals including a fixed contact, a movable contact piece, a housing portion, and a magnet portion. The movable contact piece includes a movable contact disposed facing the fixed contact. The movable contact piece is movable in a first direction in which the movable contact contacts the fixed contact and a second direction in which the movable contact separates from the fixed contact. The housing portion includes a housing space housing the fixed contact and movable contact piece. The magnet portion includes a pair of magnets disposed around the housing portion so as to face each other in a longitudinal direction of the movable contact piece and extending in the second direction beyond the housing space. The magnet portion generates a magnetic flux flowing in a direction parallel to the longitudinal direction between the fixed contact and the movable contact.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: October 10, 2023
    Assignee: OMRON CORPORATION
    Inventors: Naoki Kawaguchi, Ryota Minowa, Yasuo Hayashida, Shingo Mori, Kohei Otsuka, Hiroyuki Iwasaka
  • Patent number: 11762248
    Abstract: The present invention provides a light control film, including: a first transparent substrate; a first transparent electrode layer; a light control layer which contains a liquid crystal compound, and which enables switching between a light transmitting state and a light scattering state in accordance with a voltage to be applied; a second transparent electrode layer; and a second transparent substrate in the stated order, wherein the first transparent substrate has a front retardation of 50 nm or less, wherein the second transparent substrate has a front retardation of 50 nm or less, and wherein the light control film has a total light transmittance of from 85% to 99% in the light transmitting state.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: September 19, 2023
    Assignee: NITTO DENKO CORPORATION
    Inventors: Masanori Otsuka, Hiroyuki Takemoto, Mariko Hirai, Jin Yoshikawa, Akiko Sugino
  • Patent number: 11763969
    Abstract: A soft magnetic metal powder having soft magnetic metal particles including Fe, wherein a surface of the soft magnetic metal particle is covered by a coating part, the coating part has a first coating part and a second coating part in this order from the surface of the soft magnetic metal particle towards outside, the first coating part includes oxides of Fe as a main component, the second coating part includes a compound of at least one element selected from the group consisting of P, Si, Bi, and Zn, and a ratio of trivalent Fe atom among Fe atoms of oxides of Fe included in the first coating part is 50% or more.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: September 19, 2023
    Assignee: TDK CORPORATION
    Inventors: Kazuhiro Yoshidome, Hiroyuki Matsumoto, Kenji Horino, Satoko Mori, Takuma Nakano, Seigo Tokoro, Shota Otsuka, Toru Ujiie, Kentaro Mori
  • Patent number: 11756759
    Abstract: An electromagnetic relay includes a fixed contact, a movable contact piece having a movable contact, a drive shaft, an electromagnetic drive device, and a positioning portion. The movable contact piece is movable in a first direction contacting the fixed contact and in a second direction separating from the fixed contact. The electromagnetic drive device includes a movable iron core integrally movably connected to the drive shaft. The electromagnetic drive device switches between a contact state in which the movable contact comes into contact with the fixed contact and a separate state in which the movable contact is separated from the fixed contact by moving the drive shaft with the movable iron core. The positioning portion positions the drive shaft or the movable iron core in the separate state. The drive shaft or the movable iron core includes a first inclined portion that contacts the positioning portion in the separate state.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: September 12, 2023
    Assignee: OMRON CORPORATION
    Inventors: Shingo Mori, Ryota Minowa, Yasuo Hayashida, Naoki Kawaguchi, Kohei Otsuka, Hiroyuki Iwasaka
  • Patent number: 11742438
    Abstract: A method for manufacturing a solar cell having a P-type silicon substrate wherein one main surface is a light-receiving surface and another is a backside, a plurality of back surface electrodes formed on a part of the backside, an N-type layer in at least a part of the light-receiving surface, and contact areas in which the substrate contacts the electrodes; wherein the P-type silicon substrate is a silicon substrate doped with gallium and has a resistivity of 2.5 ?·cm or less; and a back surface electrode pitch Prm [mm] of contact areas in which the P-type silicon substrate is in contact with the back surface electrodes and the resistivity Rsub [?·cm] of the substrate satisfy the relation represented by the following formula (1). log(Rsub)??log(Prm)+1.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: August 29, 2023
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventor: Hiroyuki Otsuka
  • Patent number: 11701971
    Abstract: This three-phase AC motor drive device is provided with: a load; an inverter device 1 for driving the load; an MCOK_A_4 connected between the inverter device 1 and the load and electrically connecting or disconnecting the inverter device 1 to or from the load; a voltage detector 21a having terminals respectively connected to the circuits of at least two phases to detect the voltages between the three phases; and a current detector 11 for detecting the currents of the three phases. In the connection from the inverter device 1 to the load, the inverter device 1, the MCOK_A_4, the voltage detector 21a, the current detector 11, and the load are aligned in this order.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: July 18, 2023
    Assignee: Hitachi, Ltd.
    Inventors: Takeshi Shinomiya, Naoki Kunihiro, Kazutoshi Ogawa, Katsumi Ishikawa, Kuniaki Otsuka, Hiroyuki Shirata, Tomomi Kanazawa, Takeo Takagi, Shuichi Terakado, Kiyoshi Nakata
  • Patent number: 11699864
    Abstract: A relay includes a housing, a fixed terminal, a screw receiving member, and at least one female screw member. The fixed terminal has a plate shape. The fixed terminal includes a fastening portion having at least one screw insertion hole. The fastening portion is exposed from the housing to an outside and is screwed to an external terminal. The screw receiving member overlaps with the fastening portion in a penetrating direction of the at least one screw insertion hole and is provided in proximity to the fastening portion. The at least one female screw member is provided integrally with or separately from the screw receiving member and is prevented from rotating by the screw receiving member.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: July 11, 2023
    Assignee: OMRON CORPORATION
    Inventors: Hiroyuki Harimochi, Ryota Minowa, Naoki Kawaguchi, Shinichi Ogawa, Kohei Otsuka, Hiroyuki Iwasaka, Kazuhiro Tsutsui
  • Patent number: 11616163
    Abstract: Disclosed is a firing furnace for firing an electrode of a solar cell element, which is provided with: a transfer member, which transfers a substrate having a conductive paste applied thereto; a heating section, which heats the substrate and fires the conductive paste; and a cooling section, which cools the heated substrate. The furnace is also provided with a heating means for heating the transfer member. Specifically, at the time of firing the electrode paste using the wire-type firing furnace, since a wire is fired at a temperature substantially equivalent to the ambient temperature of the heating section, deterioration of yield due to having the electrode damaged by a deposited material of the metal component of the conductive paste is suppressed, said deposited material being deposited on the wire, and the wire-type firing furnace can be continuously used.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: March 28, 2023
    Assignee: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Ryo Mitta, Takenori Watabe, Hiroyuki Otsuka