Patents by Inventor Hiroshi Nagahama

Hiroshi Nagahama 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: 20240122247
    Abstract: A power supply unit for an aerosol generating device includes a power supply, a heater connector connected to a heater, a voltage conversion IC, a circuit board, a capacitor, a first ground provided inside the circuit board and connected to the other end of the capacitor, a second ground provided inside the circuit board, insulated from the first ground inside the circuit board, and connected to the detection terminal, and a common ground configured to electrically connect the first ground and the second ground. On the second surface, no electronic component is provided in a common ground projection region overlapping with the common ground when viewed from a direction orthogonal to the circuit board.
    Type: Application
    Filed: November 5, 2023
    Publication date: April 18, 2024
    Applicant: Japan Tobacco Inc.
    Inventors: Tatsunari AOYAMA, Hiroshi KAWANAGO, Toru NAGAHAMA, Takashi FUJIKI, Ryo YOSHIDA
  • Publication number: 20240090590
    Abstract: This inhalation device is provided with: a power source unit for supplying power; a heating unit for using power supplied from the power source unit to heat a substrate containing an aerosol source; a measurement unit for measuring a measurement value corresponding to the temperature of the heating unit; an operation unit, which is different from the heating unit, that runs on power supplied from the power source unit; and a control unit for controlling operation of the heating unit on the basis of heating settings stipulating a time series transition in a target temperature that is a target value for the temperature of the heating unit. The control unit implements correction processing to correct the measurement value in response to the start of power supply to the operation unit from the power source unit.
    Type: Application
    Filed: November 29, 2023
    Publication date: March 21, 2024
    Applicant: Japan Tobacco Inc.
    Inventors: Toru NAGAHAMA, Hiroshi KAWANAGO, Ryo YOSHIDA, Tatsunari AOYAMA, Takashi FUJIKI, Junji MINATO
  • Publication number: 20240074495
    Abstract: A power supply unit for an aerosol generating device, includes a power supply, a heater connector connected to a heater configured to heat an aerosol source by consuming power supplied from the power supply, a case which constitutes a surface of the power supply unit, and a sensor which is disposed in the vicinity of the case and is configured to output a value related to a temperature of the case. Protection control for prohibiting one or both of charging of the power supply and discharging from the power supply to the heater is executed based on an output value of the sensor.
    Type: Application
    Filed: November 5, 2023
    Publication date: March 7, 2024
    Applicant: Japan Tobacco Inc.
    Inventors: Manabu YAMADA, Tatsunari AOYAMA, Hiroshi KAWANAGO, Hiroki NAKAAE, Toru NAGAHAMA, Yuki NISHIMURA, Takashi FUJIKI, Yuki MASUDA, Ryo YOSHIDA
  • Publication number: 20240079893
    Abstract: A power supply unit for an aerosol generation device that generates an aerosol by heating an aerosol source, the power supply unit including: a power supply; a connector electrically connectable to an external power supply; a first load; a charging IC including an input terminal connected to the connector, a charging terminal connected to the power supply, and an output terminal connected to the first load, and configured to convert electric power input to the input terminal and output the converted electric power from the charging terminal; and a discharge path configured to connect the power supply and a second load without passing through the charging IC, in which the charging IC is configured to supply electric power input from the power supply to the charging terminal to the first load via the output terminal.
    Type: Application
    Filed: November 5, 2023
    Publication date: March 7, 2024
    Applicant: Japan Tobacco Inc.
    Inventors: Tatsunari AOYAMA, Hiroshi KAWANAGO, Toru NAGAHAMA, Takashi FUJIKI, Ryo YOSHIDA
  • Publication number: 20240074515
    Abstract: A power supply unit of an aerosol generation device which a heating unit is attachable to and detachable from includes: a secondary battery; a case forming a surface of the power supply unit; a chassis accommodated in an internal space of the case and made of an insulating resin; a plurality of magnets held by the chassis with a gap therebetween; an inner member covering a side surface of the chassis; and an outer member covering an outer surface of the inner member. The inner member includes a plurality of through holes exposing the plurality of magnets, and the outer member is replaceably fixed by the plurality of magnets exposed from the plurality of through holes.
    Type: Application
    Filed: November 5, 2023
    Publication date: March 7, 2024
    Applicant: Japan Tobacco Inc.
    Inventors: Tatsunari AOYAMA, Hiroshi KAWANAGO, Toru NAGAHAMA, Takashi FUJIKI, Ryo YOSHIDA
  • Publication number: 20240074496
    Abstract: A power supply unit of an aerosol generation device includes: a power supply; a heater connector to which a heater is connected; a controller configured to control supply of power from the power supply to the heater connector, a charging IC including an input terminal and a charging terminal connected to the power supply and configured to convert power input to the input terminal and output the power from the charging terminal; a receptacle including a power supply terminal and a data terminal and electrically connected to an external power supply; a power supply line connecting the power supply terminal and the input terminal; a data line connecting the data terminal and the controller; first protective components on the power supply line; and a second protective component on the data line. The number of the first protective components is larger than the number of the second protective component.
    Type: Application
    Filed: November 5, 2023
    Publication date: March 7, 2024
    Applicant: Japan Tobacco Inc.
    Inventors: Takashi FUJIKI, Hiroshi KAWANAGO, Toru NAGAHAMA, Tatsunari AOYAMA, Ryo YOSHIDA
  • Publication number: 20240065344
    Abstract: A power supply unit for an aerosol generating device includes a power supply, a heater connector connected to a heater configured to heat an aerosol source by consuming power supplied from the power supply, a connector electrically connectable to an external power supply, a charging IC which includes an input terminal connected to the connector and a charging terminal connected to the power supply, and is configured to convert power input to the input terminal and output power which is converted from the charging terminal, and a first load having one end connected in parallel with the input terminal. The charging IC is configured to supply power input from the power supply to the charging terminal to the first load via the input terminal.
    Type: Application
    Filed: November 5, 2023
    Publication date: February 29, 2024
    Applicant: Japan Tobacco Inc.
    Inventors: Tatsunari AOYAMA, Hiroshi KAWANAGO, Toru NAGAHAMA, Takashi FUJIKI, Ryo YOSHIDA
  • Publication number: 20240065336
    Abstract: A power supply unit of an aerosol generation device includes: a power supply; a heater connector to which a heater configured to heat an aerosol source by consuming power supplied from the power supply is connected; a first sensor disposed in the vicinity of the heater or the power supply and configured to output a value related to a temperature of the heater or a value related to a temperature of the power supply; and a second sensor provided at a position separated from the first sensor and configured to output a value related to a temperature at the position. At least one of the output value of the first sensor and the output value of the second sensor is abnormal, at least one or both of charging of the power supply and discharging from the power supply to the heater are temporarily prohibited.
    Type: Application
    Filed: November 5, 2023
    Publication date: February 29, 2024
    Applicant: Japan Tobacco Inc.
    Inventors: Tatsunari AOYAMA, Hiroshi KAWANAGO, Toru NAGAHAMA, Takashi FUJIKI, Ryo YOSHIDA
  • Publication number: 20240065335
    Abstract: A circuit for an aerosol generation device includes: a heater connector to which is connected a heater that consumes power supplied from a power supply and heats an aerosol source; a controller that includes a first communication terminal and a second communication terminal for serial communication, and controls supply of power from the power supply to the heater; a first IC that is a separate entity from the controller and that includes a third communication terminal for serial communication; a second IC that is a separate entity from the controller and the first IC, and that includes a fourth communication terminal for serial communication; a first communication line that connects the first communication terminal and the third communication terminal; and a second communication line that connects the second communication terminal and the fourth communication terminal and that does not have an electrical contact with the first communication line.
    Type: Application
    Filed: November 5, 2023
    Publication date: February 29, 2024
    Applicant: Japan Tobacco Inc.
    Inventors: Tatsunari AOYAMA, Hiroshi KAWANAGO, Toru NAGAHAMA, Takashi FUJIKI, Ryo YOSHIDA
  • Patent number: 7978286
    Abstract: An illumination unit includes a light guide having an incidence surface, a frame which is spaced apart from the incidence surface of the light guide, an accommodation section which is formed between the incidence surface of the light guide and the frame, and a light source unit including light-emitting diodes, a film substrate on which the light-emitting diodes are amounted, a heat radiation member having a support portion which supports the film substrate and a reflection portion which extends from the support portion, and an adhesive tape which adheres the film substrate to the support portion and has heat radiation properties, the light source unit being accommodated in the accommodation section.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: July 12, 2011
    Assignee: Toshiba Mobile Display Co., Ltd.
    Inventors: Makoto Kono, Hiroshi Nagahama, Kenji Aoshima, Jihei Kubo
  • Patent number: 7733438
    Abstract: An area light source device, which is disposed between a liquid crystal display panel and a display medium and illuminates the liquid crystal display panel from a back side thereof, includes a light source, a light guide, and a first optical sheet and a second optical sheet which are stacked between the liquid crystal display panel and the light guide and impart predetermined optical characteristics to emission light emerging from the light guide. The first optical sheet is disposed on the liquid crystal display panel side, and the second optical sheet is disposed on the light guide side. The first optical sheet and the second optical sheet have opening parts opposed to the display medium, and the first optical sheet is disposed to cover edges that define the opening part of the second optical sheet.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: June 8, 2010
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventors: Kenji Aoshima, Hiroshi Nagahama
  • Publication number: 20090316064
    Abstract: An illumination unit includes a light guide having an incidence surface, a frame which is spaced apart from the incidence surface of the light guide, an accommodation section which is formed between the incidence surface of the light guide and the frame, and a light source unit including light-emitting diodes, a film substrate on which the light-emitting diodes are amounted, a heat radiation member having a support portion which supports the film substrate and a reflection portion which extends from the support portion, and an adhesive tape which adheres the film substrate to the support portion and has heat radiation properties, the light source unit being accommodated in the accommodation section.
    Type: Application
    Filed: June 23, 2009
    Publication date: December 24, 2009
    Inventors: Makoto KONO, Hiroshi Nagahama, Kenji Aoshima, Jihei Kubo
  • Patent number: 7327417
    Abstract: A display device includes a transmissive liquid crystal display panel that is disposed on a front side of a display medium that effects variable display, and an area light source device that is disposed between the liquid crystal display panel and the display medium and illuminates a back surface of the liquid crystal display panel. The area light source device includes a light source, and a light guide that includes a transmissive display part, which is opposed to the display medium, and emits light, which is radiated from the light source, toward the liquid crystal display panel. The light guide is configured such that a thickness at an end face along an edge that defines the transmissive display part is less than a thickness at a surface of the light guide, which is opposed to the light source.
    Type: Grant
    Filed: August 5, 2005
    Date of Patent: February 5, 2008
    Assignee: Toshiba Matsushita Display Technology
    Inventors: Masakazu Kitagawa, Hiroshi Nagahama
  • Patent number: 7292289
    Abstract: A liquid crystal display device (L) according to the present invention comprises a liquid crystal display panel (1) having one or more wires on a substrate (1B) thereof, and a housing having holding portions (120a) to (120h) configured to hold opposing end portions of the liquid crystal display panel, wherein a spacing (H2) between a portion of an outermost wire (20a) or (20i) of the one or more wires which is located in the vicinity of the holding portion and a portion of an edge of the substrate which is located in the vicinity of the holding portion is larger than a spacing (H1) between a portion of the outermost wire which is other than the portion located in the vicinity of the holding portion and a portion of the edge of the substrate which is other than the portion located in the vicinity of the holding portion.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: November 6, 2007
    Assignee: Toshiba Matsushita Display Technology Co., Ltd.
    Inventor: Hiroshi Nagahama
  • Publication number: 20060274221
    Abstract: An area light source device, which is disposed between a liquid crystal display panel and a display medium and illuminates the liquid crystal display panel from a back side thereof, includes a light source, a light guide, and a first optical sheet and a second optical sheet which are stacked between the liquid crystal display panel and the light guide and impart predetermined optical characteristics to emission light emerging from the light guide. The first optical sheet is disposed on the liquid crystal display panel side, and the second optical sheet is disposed on the light guide side. The first optical sheet and the second optical sheet have opening parts opposed to the display medium, and the first optical sheet is disposed to cover edges that define the opening part of the second optical sheet.
    Type: Application
    Filed: June 5, 2006
    Publication date: December 7, 2006
    Inventors: Kenji Aoshima, Hiroshi Nagahama
  • Patent number: 7126650
    Abstract: A liquid crystal display device comprising a lighting unit of the present invention is aimed to inhibit a liquid crystal panel 111 from breaking by a pressure from a display surface side of a liquid crystal cell 111, and to inhibit entry of dust having influence on display. Such lighting unit is structured in a way that a fluorescent discharge tube 2 is disposed close to an incident side end face E1 of a light guiding plate 1, and the end face E1 of the light guiding plate 1 and the fluorescent discharge tube 2, an end face E2 and a bottom surface of the light guiding plate 1 are covered with a reflecting sheet 3. A light correction sheet 4 is disposed on an emanating surface of the light guiding plate 1, and these components are stored in an electrically conductive casing 9. A spacing H of a space between the light correction sheet 4 and the light guiding plate 1 is set to not larger than one pixel dimension of the liquid crystal cell 111.
    Type: Grant
    Filed: March 31, 2003
    Date of Patent: October 24, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Hiroshi Nagahama
  • Publication number: 20060152101
    Abstract: A liquid crystal display device (L) according to the present invention comprises a liquid crystal display panel (1) having one or more wires on a substrate (1B) thereof, and a housing having holding portions (120a) to (120h) configured to hold opposing end portions of the liquid crystal display panel, wherein a spacing (H2) between a portion of an outermost wire (20a) or (20i) of the one or more wires which is located in the vicinity of the holding portion and a portion of an edge of the substrate which is located in the vicinity of the holding portion is larger than a spacing (H1) between a portion of the outermost wire which is other than the portion located in the vicinity of the holding portion and a portion of the edge of the substrate which is other than the portion located in the vicinity of the holding portion.
    Type: Application
    Filed: November 14, 2002
    Publication date: July 13, 2006
    Inventor: Hiroshi Nagahama
  • Publication number: 20060028597
    Abstract: A display device includes a transmissive liquid crystal display panel that is disposed on a front side of a display medium that effects variable display, and an area light source device that is disposed between the liquid crystal display panel and the display medium and illuminates a back surface of the liquid crystal display panel. The area light source device includes a light source, and a light guide that includes a transmissive display part, which is opposed to the display medium, and emits light, which is radiated from the light source, toward the liquid crystal display panel. The light guide is configured such that a thickness at an end face along an edge that defines the transmissive display part is less than a thickness at a surface of the light guide, which is opposed to the light source.
    Type: Application
    Filed: August 5, 2005
    Publication date: February 9, 2006
    Inventors: Masakazu Kitagawa, Hiroshi Nagahama
  • Publication number: 20050030443
    Abstract: A liquid crystal display device comprising a lighting unit of the present invention is aimed to inhibit a liquid crystal panel 111 from breaking by a pressure from a display surface side of a liquid crystal cell 111, and to inhibit entry of dust having influence on display. Such lighting unit is structured in a way that a fluorescent discharge tube 2 is disposed close to an incident side end face E1 of a light guiding plate 1, and the end face E1 of the light guiding plate 1 and the fluorescent discharge tube 2, an end face E2 and a bottom surface of the light guiding plate 1 are covered with a reflecting sheet 3. A light correction sheet 4 is disposed on an emanating surface of the light guiding plate 1, and these components are stored in an electrically conductive casing 9. A spacing H of a space between the light correction sheet 4 and the light guiding plate 1 is set to not larger than one pixel dimension of the liquid crystal cell 111.
    Type: Application
    Filed: March 31, 2003
    Publication date: February 10, 2005
    Inventor: Hiroshi Nagahama
  • Patent number: 5919282
    Abstract: In a process for vacuum refining a molten steel wherein a refining flux is used, a fuel gas and an oxygen gas are spouted into the outlet of a top-blown lance of a vacuum refining apparatus to form a burner flame below the top-blown lance, and, at the same time, a refining flux is fed into the top-blown lance with the aid of an oxygen gas as a carrier gas and further passed through the burner flame, and the heated and melted refining flux is allowed to arrive at the surface of the molten steel. In this case, the refining flux feed rate and the circulating flow rate of the molten steel during vacuum refining are regulated so as to have a predetermined relationship, achieving a low flux consumption throughout a period of single refractory life of the vacuum tank.
    Type: Grant
    Filed: April 17, 1997
    Date of Patent: July 6, 1999
    Assignee: Nippon Steel Corporation
    Inventors: Yosuke Hoshijima, Kazuo Oonuki, Kazuhisa Fukuda, Masao Iguchi, Hidekazu Kakizoe, Hiroki Gofuku, Hiroshi Nagahama, Hiroaki Yamamoto