Patents by Inventor Takeshi Shiomi

Takeshi Shiomi 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).

  • Publication number: 20250141335
    Abstract: A rectifier circuit is used that includes a high withstand voltage transistor, a low withstand voltage transistor, and a control transistor. The high withstand voltage transistor has a reference terminal thereof connected to a high voltage terminal of the low withstand voltage transistor, and the high withstand voltage transistor has a control terminal thereof connected to a reference terminal of the low withstand voltage transistor via a capacitor. The control transistor has a high voltage terminal thereof connected to the control terminal of the high withstand voltage transistor, a reference terminal thereof connected to the reference terminal of the low withstand voltage transistor, and a control terminal thereof connected to the high voltage terminal of the low withstand voltage transistor.
    Type: Application
    Filed: October 21, 2024
    Publication date: May 1, 2025
    Inventor: Takeshi Shiomi
  • Publication number: 20250070193
    Abstract: A solid oxide fuel cell includes: a plurality of laminated power generation cells each including a solid electrolyte layer, an anode electrode disposed on one surface of the solid electrolyte layer, and a cathode electrode disposed on the other surface of the solid electrolyte layer; a separator provided between the power generation cells and separated from the power generation cells; and an anode flow path formed between an anode electrode side of the power generation cell and the separator; and a cathode flow path formed between a cathode electrode side of the power generation cell and the separator.
    Type: Application
    Filed: December 23, 2021
    Publication date: February 27, 2025
    Inventors: Ken Bryan IKEGUCHI, Takeshi SHIOMI, Keiji ICHIHARA
  • Publication number: 20240314924
    Abstract: A control circuit formed on a PCB includes an IC, a 3-terminal capacitor, and a first component. The IC has a structure where four or more terminals are arranged on one side of the IC, the 3-terminal capacitor includes a feedthrough electrode and a reference electrode, and the first component has one end and another end. The first wire is wired in a direction along the one side of the IC. The 3-terminal capacitor is configured such that one end of the feedthrough electrode is connected to any terminal of the IC, and such that the reference electrode is connected to the first wire. The one end of the first component is connected to any terminal of the IC, and the first component “straddles the first wire” or “connects the first wire to the another end”.
    Type: Application
    Filed: July 13, 2023
    Publication date: September 19, 2024
    Inventors: TAKESHI SHIOMI, KENTARO KISHIRA
  • Publication number: 20240305292
    Abstract: A half-bridge circuit includes a series of a first high-voltage MOS, a first low-voltage MOS, a second high-voltage MOS, and a second low-voltage MOS. The half-bridge circuit further includes a capacitor, and the capacitor is connected to the first high-voltage MOS and the second low-voltage MOS. The voltage of the capacitor is greater than 300 V. The drain-to-source withstanding voltage of the first high-voltage MOS is higher than the drain-to-source withstanding voltage of the first low-voltage MOS by 10 times or greater. The voltage of the capacitor is higher than the drain-to-source withstanding voltage of the first low-voltage MOS by 10 times or greater.
    Type: Application
    Filed: February 26, 2024
    Publication date: September 12, 2024
    Inventor: TAKESHI SHIOMI
  • Publication number: 20240266572
    Abstract: This solid oxide fuel cell is configured by stacking, in the thickness direction, a plurality of power generating cells having a solid electrolyte plate, an anode electrode disposed to one surface of the solid electrolyte plate, an anode support layer supporting the anode electrode, a cathode electrode disposed to the other surface of the solid electrolyte plate, and a cathode support layer supporting the cathode electrode, the power generating cells being stacked via an interconnector for electrically connecting the anode support layer of one of adjacent power generating cells and the cathode support layer of another of the adjacent power generating cells, wherein: the anode support layer and the cathode support layer are formed of a ferritic stainless steel; and the interconnector is formed of a ferritic stainless steel containing aluminum.
    Type: Application
    Filed: June 8, 2021
    Publication date: August 8, 2024
    Inventors: Yusuke AOYAMA, Takeshi SHIOMI, Keiji ICHIHARA
  • Patent number: 11996591
    Abstract: An attachment structure for a deformation absorption member of a fuel-cell-stack includes a first raised piece raised from one surface of a base material in a grid pattern, and having an extension portion extending from a proximal end, the extension portion abutting at least one of the cathode side separator or the anode side separator, a second raised piece having a proximal end, and a joint portion formed by partially joining a location between the proximal end of the first raised piece and the proximal end of the second raised piece, proximal end of the first raised piece being adjacent the proximal end of the second raised piece in a second direction that intersects a first direction taken from the proximal end of the first raised piece to an extension portion side, to the at least one of the anode side separator and the cathode side separator.
    Type: Grant
    Filed: June 2, 2014
    Date of Patent: May 28, 2024
    Assignees: Nissan Motor Co., Ltd., NHK Spring Co., Ltd.
    Inventors: Yosuke Fukuyama, Takeshi Shiomi, Yusuke Terada, Norihiro Tajima
  • Publication number: 20240039010
    Abstract: A fuel cell having a plurality of power generating cells stacked in a thickness direction via an interconnector, the power generating cells comprising a solid electrolyte plate, an anode electrode disposed on one side of the solid electrolyte plate, and a cathode electrode disposed on the other side of the solid electrolyte plate, the interconnector electrically connecting the anode electrode and the cathode electrode, the anode electrode and the cathode electrode having a support layer configured of metal, and the support layer of any one of the anode electrode and the cathode electrode being bonded to the interconnector by welding, and the support layer of the other one of the anode electrode and the cathode electrode being metallic bonded to the interconnector by a method other than welding.
    Type: Application
    Filed: April 15, 2021
    Publication date: February 1, 2024
    Applicant: NISSAN MOTOR CO., LTD.
    Inventor: Takeshi SHIOMI
  • Patent number: 11862423
    Abstract: A relay control circuit is configured to control opening and closing of a contact of a non-latch relay that includes the contact and a coil configured to operate the contact. The relay control circuit includes: a low-voltage power supply; a high-voltage power supply; a first transistor; a rectifying element; and a reference voltage node. A high-voltage terminal of the first transistor is connected to a positive electrode of the high-voltage power supply. A low-voltage terminal of the first transistor is connected to one end of the coil. An anode of the rectifying element is connected to a positive electrode of the low-voltage power supply. A cathode of the rectifying element is connected to one end of the coil. A negative electrode of the high-voltage power supply, a negative electrode of the low-voltage power supply, and the other end of the coil are connected to the reference voltage node.
    Type: Grant
    Filed: June 8, 2022
    Date of Patent: January 2, 2024
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Takeshi Shiomi
  • Publication number: 20230387826
    Abstract: An AC-voltage sensor circuit is connected to an AC output unit of an inverter circuit. A control circuit and the inverter circuit are isolation-connected. The AC-voltage sensor circuit includes a sense-signal isolation circuit. The inverter circuit and the control circuit are isolation-connected together by the AC-voltage sensor circuit. The AC output unit includes a first line and a second line that are power supply lines. The inverter circuit includes a reference-voltage node. The AC-voltage sensor circuit is configured to output a signal indicating a voltage difference between a “voltage of the first line for the reference-voltage node” and a “voltage of the second line for the reference-voltage node”.
    Type: Application
    Filed: May 26, 2023
    Publication date: November 30, 2023
    Inventor: TAKESHI SHIOMI
  • Publication number: 20230387792
    Abstract: An AC-voltage sensor circuit is connected to an AC input unit of a PFC circuit. A control circuit and the PFC circuit are isolation-connected. The AC-voltage sensor circuit includes a sense-signal isolation circuit. The PFC circuit and the control circuit are isolation-connected together by the AC-voltage sensor circuit. The AC input unit includes a first line and a second line that are power supply lines. The PFC circuit includes a reference-voltage node. The AC-voltage sensor circuit is configured to output a signal indicating a voltage difference between a “voltage of the first line for the reference-voltage node” and a “voltage of the second line for the reference-voltage node”.
    Type: Application
    Filed: May 27, 2023
    Publication date: November 30, 2023
    Inventors: TAKESHI SHIOMI, KENTARO KISHIRA
  • Patent number: 11784557
    Abstract: A snubber circuit connected to a rectifying circuit including a reference voltage node and a switch node, the snubber circuit comprises a snubber capacitor; and a P-type MOS transistor, wherein a positive electrode of the snubber capacitor is connected to the switch node, and a drain of the P-type MOS transistor is connected to a negative electrode of the snubber capacitor, and a source of the P-type MOS transistor is connected to the reference voltage node.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: October 10, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Takeshi Shiomi
  • Patent number: 11682979
    Abstract: A transient current in a rectifier circuit is effectively reduced. In a rectifier circuit, a first rectifier is provided between a first terminal and a second terminal. In the rectifier circuit, when a switch element is turned ON, a primary winding current flows from a power supply to a primary winding of a transformer. When the switch element is turned OFF, a second rectifier current flows from a secondary winding of the transformer to a second rectifier. During a period in which the second rectifier current is flowing, a reverse voltage is applied between the first terminal and the second terminal.
    Type: Grant
    Filed: May 29, 2019
    Date of Patent: June 20, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Takeshi Shiomi
  • Publication number: 20230079668
    Abstract: A reverse-flow prevention circuit includes: an n-channel metal-oxide semiconductor having an anode terminal, a cathode terminal, and a control terminal; a reference voltage node; an output voltage node; a first rectifier element, a second rectifier element, and a third rectifier element; a secondary-side winding of a transformer having a center tap terminal; a voltage regulator having an input terminal, an output terminal, and a reference voltage terminal; and a transistor having a high-voltage terminal, a low-voltage terminal, and a control terminal.
    Type: Application
    Filed: July 15, 2022
    Publication date: March 16, 2023
    Inventor: TAKESHI SHIOMI
  • Patent number: 11575323
    Abstract: A transient current in a rectifier circuit is efficiently reduced. In a rectifier circuit, a first rectifier is provided between the first terminal and a second terminal. In the rectifier circuit, when a switch element is turned ON, a primary winding current flows from a power source to a primary winding in a transformer. When the switch element is turned OFF, a second rectifier current flows from a secondary winding in the transformer to a second rectifier. When the second rectifier current flows, a first reverse voltage is applied between the first terminal and the second terminal. The first reverse voltage is a reverse voltage applied instantaneously.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: February 7, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Takeshi Shiomi
  • Publication number: 20220406542
    Abstract: A relay control circuit configured to control opening and closing of a contact of a non-latch relay, the non-latch relay including the contact and a coil configured to operate the contact, the relay control circuit comprises a high-voltage power supply; a low-voltage power supply; a power supply switching circuit; a first capacitor; and a reference voltage node, wherein the power supply switching circuit and one end of the first capacitor are connected to one end of the coil, the other end of the first capacitor and the reference voltage node are connected to the other end of the coil, and the power supply switching circuit is configured to switch a power supply connected to the one end. of the coil between the high-voltage power supply and the low-voltage power supply.
    Type: Application
    Filed: June 14, 2022
    Publication date: December 22, 2022
    Inventor: TAKESHI SHIOMI
  • Publication number: 20220406543
    Abstract: A relay control circuit is configured to control opening and closing of a contact of a non-latch relay that includes the contact and a coil configured to operate the contact. The relay control circuit includes: a low-voltage power supply; a high-voltage power supply; a first transistor; a rectifying element; and a reference voltage node. A high-voltage terminal of the first transistor is connected to a positive electrode of the high-voltage power supply. A low-voltage terminal of the first transistor is connected to one end of the coil. An anode of the rectifying element is connected to a positive electrode of the low-voltage power supply. A cathode of the rectifying element is connected to one end of the coil. A negative electrode of the high-voltage power supply, a negative electrode of the low-voltage power supply, and the other end of the coil are connected to the reference voltage node.
    Type: Application
    Filed: June 8, 2022
    Publication date: December 22, 2022
    Inventor: TAKESHI SHIOMI
  • Publication number: 20220328238
    Abstract: A transformer connection method for a transformer includes a first high-frequency terminal configured as a first end of a first plate winding, a second high-frequency terminal configured as a first end of a second plate winding, and a direct current terminal connected to a second end of the first plate winding and a second end of the second plate winding. The transformer connection method comprises connecting the first high-frequency terminal and the second high-frequency terminal to a circuit board to cause the first high-frequency terminal and the second high-frequency terminal to be upright from a surface of the circuit board; and connecting the direct current terminal to a component or to the circuit board connecting with the component, the direct current terminal extending from a portion between the transformer and the circuit board to an outside.
    Type: Application
    Filed: March 28, 2022
    Publication date: October 13, 2022
    Inventors: TAKESHI SHIOMI, SHINOBU YAMAZAKI, KENTARO KISHIRA
  • Patent number: 11404964
    Abstract: A transient current in a rectifier circuit is effectively reduced. In the rectifier circuit, a current flows from a power supply to a coil when a transistor is turned ON. When the transistor is turned OFF, the current of the coil flows into a second rectifier.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: August 2, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Takeshi Shiomi
  • Patent number: 11368085
    Abstract: A snubber circuit connected to a rectifying circuit including a reference potential node, an output potential node, and the snubber circuit comprises a snubber capacitor; a snubber diode; and a snubber resistor, wherein a negative electrode of the snubber capacitor is connected to the reference potential node, an anode of the snubber diode is connected to the switch node and a cathode of the snubber diode is connected to a positive electrode of the snubber capacitor, one end of the snubber resistor is connected to the positive electrode of the snubber capacitor, and another end of the snubber resistor is connected to the output potential node, and a reverse recovery time of the snubber diode is longer than a reverse recovery time of the rectifying element.
    Type: Grant
    Filed: May 28, 2021
    Date of Patent: June 21, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Takeshi Shiomi
  • Patent number: 11349403
    Abstract: In a half-bridge circuit, in a case that a first transistor element is turned ON, a primary winding current flows from a power supply to a primary winding. Then, in a case that the first transistor element is turned OFF, (i) a first rectifying element current flows from a secondary winding to a first rectifying element, or (ii) a second rectifying element current flows from a tertiary winding to a second rectifying element.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: May 31, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Takeshi Shiomi