Patents by Inventor Hiroshi Igarashi

Hiroshi Igarashi 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: 11150573
    Abstract: A developing cartridge includes a casing, a rotating member, and an electrode member. The casing may be configured to accommodate therein developer. The rotating member has a rotational shaft extending in an axial direction. The rotating member is configured to rotate about the rotational shaft and carries the developer thereon. The electrode member is configured to be electrically connected to the rotating member. The electrode member covers at least part of the rotational shaft from an orthogonal direction orthogonal to the axial direction and is arranged to confront the casing in the axial direction. The electrode member is configured to move in the orthogonal direction in accordance with a movement in the axial direction.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: October 19, 2021
    Assignee: BROTHER KOGOYO KABUSHIKI KAISHA
    Inventors: Yasumasa Fujii, Tsutomu Suzuki, Hiroshi Igarashi
  • Patent number: 11145529
    Abstract: An EFEM includes first and second chambers, an airflow formation unit, a gas discharge port, and first and second nozzles. The first chamber introduces a replacement gas. The second chamber is connected with the first chamber via first and second communication sections. In the first communication section, a filter is disposed, and the replacement gas inflows from the first chamber. In the second communication section, the replacement gas outflows into the first chamber. The airflow formation unit produces a circulating airflow between the first and second chambers. The gas discharge port discharges an internal gas from the first or second chamber. The first nozzle discharges the replacement gas supplied from a replacement gas supply source into the first chamber through a first opening. The second nozzle discharges the replacement gas supplied from the source through a second opening.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: October 12, 2021
    Assignee: TDK CORPORATION
    Inventors: Tsutomu Okabe, Hiroshi Igarashi
  • Publication number: 20210309812
    Abstract: One object of the present invention is to provide a production method for powder that can produce powder which can suppress foaming of a melt and can produce a molded-article with good conductivity and appearance by melt-molding, the present invention provides a production method for powder containing a composite resin (2, 21, 22, 23) containing a thermomeltable resin (2a) and a conductive filler (2b), wherein the production method comprises: a dispersion preparing step in which a raw material powder containing the thermomeltable resin (2a), the conductive filler (2b), a dispersion medium in which the raw material powder and the conductive filler (2b) are dispersed, and a dispersant (3) for dispersing the conductive filler (2b) in the dispersion medium are mixed to prepare the dispersion: an intermediate powder recovering step in which the dispersion medium is removed from the dispersion and recovering an intermediate powder containing the composite resin (2, 21, 22, 23) and the dispersant (3); and a dispersa
    Type: Application
    Filed: July 26, 2019
    Publication date: October 7, 2021
    Inventors: Yasuhito KODA, Katsunori TAKADA, Hiroshi IGARASHI
  • Publication number: 20210301089
    Abstract: An object of the present invention is to provide a production method for composite resin particles containing a fluororesin and a carbon nanomaterial and having excellent moldability while maintaining conductivity, the present invention provides a production method for composite resin particles containing a fluororesin and a carbon nanomaterial, comprising: a step of separating the fluororesin in the presence of a dispersion medium; a step of obtaining a dispersion containing the fluororesin, the carbon nanomaterial, and the dispersion medium by dispersing the fluororesin and the carbon nanomaterial in the dispersion medium; and a step of removing the dispersion medium by storing the dispersion in a drying container having a bottom surface, and drying the dispersion under conditions in which a dry area calculated by the following equation (1) is in a range of 20˜100 [cm2/g], Dry area=(S/W1) . . .
    Type: Application
    Filed: July 25, 2019
    Publication date: September 30, 2021
    Inventors: Yasuhito KODA, Katsunori TAKADA, Hiroshi IGARASHI
  • Publication number: 20210287918
    Abstract: A circulating EFEM includes an introduction port for introducing a gas, a housing for circulating the introduced gas, and a discharge port for discharging the gas from the housing into a discharge pipe. The discharge port includes a box and a damper. The box is disposed to surround a discharge opening formed on the housing and connected to the discharge pipe. The damper is disposed inside the box to close and open the discharge port and adjusts a discharge amount of the gas via the discharge opening by at least partially moving in response to a differential pressure between the housing and the box.
    Type: Application
    Filed: May 28, 2021
    Publication date: September 16, 2021
    Applicant: TDK CORPORATION
    Inventors: Hiroshi IGARASHI, Tsutomu OKABE, Mutsuo SASAKI
  • Publication number: 20210265536
    Abstract: A light emitting device includes: a substrate; a light emitting element; a wavelength conversion layer; and a wall surrounding the wavelength conversion layer, having an opening portion exposing at least a part of a top surface of the wavelength conversion layer, and containing a light reflective material. The surface of the wall includes a top surface provided at a higher position than the top surface of the wavelength conversion layer, and an inner surface forming the opening portion. The wall includes a first portion surrounding the wavelength conversion layer, and a second portion provided over the first portion and surrounding the first portion. The opening portion is hollow. An angle of a corner portion between the top surface and the inner surface of the wall is in a range of 90 degrees or greater and less than 180 degrees.
    Type: Application
    Filed: January 21, 2021
    Publication date: August 26, 2021
    Inventors: Hiroshi MIYAIRI, Yoshimi KATSUMOTO, Takayuki IGARASHI, Yoshifumi HODONO, Shinya ENDO
  • Patent number: 11049736
    Abstract: A circulating EFEM includes an introduction port for introducing a gas, a housing for circulating the introduced gas, and a discharge port for discharging the gas from the housing into a discharge pipe. The discharge port includes a box and a damper. The box is disposed to surround a discharge opening formed on the housing and connected to the discharge pipe. The damper is disposed inside the box to close and open the discharge port and adjusts a discharge amount of the gas via the discharge opening by at least partially moving in response to a differential pressure between the housing and the box.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: June 29, 2021
    Assignee: TDK CORPORATION
    Inventors: Hiroshi Igarashi, Tsutomu Okabe, Mutsuo Sasaki
  • Publication number: 20210184228
    Abstract: Provide an electrode catalyst with excellent catalytic activity that can contribute to cost reduction of PEFC. The electrode catalyst includes a hollow carbon carrier with mesopores with a pore size of 2 to 50 nm and a catalyst particle supported on the carrier. The catalyst particle is supported on both inside and outside the mesopores of the carrier, and have a core portion formed on the carrier and a shell portion covering at least a part of the surface of the core portion. Pd is included in the core portion, and Pt is included in the shell portion, and when the analysis of the particle size distribution of the catalyst particles using the three dimensional reconstructed image obtained by electron beam tomography (electron tomography) measurement using an STEM is performed, the ratio of the catalyst particles supported inside the mesopore is 50% or more.
    Type: Application
    Filed: May 15, 2019
    Publication date: June 17, 2021
    Applicant: N.E. CHEMCAT CORPORATION
    Inventors: Kiyotaka Nagamori, Yoko Nakamura, Tomoteru Mizusaki, Yasuhiro Seki, Hiroshi Igarashi
  • Publication number: 20210104424
    Abstract: A load port apparatus connects a main opening of a wafer transportation container to a frame opening. The apparatus includes an installation unit, a frame unit, a flange clamp unit, and a detection unit. The installation unit includes an installation table configured to install the container and relatively move to the frame opening. The frame unit is upright upward from the installation unit and includes the frame opening. The flange clamp unit includes an engagement section and a drive section. The engagement section is engageable with a flange surrounding an outer circumference of the main opening. The drive section drives the engagement section to carry out an engagement operation and a separation operation. The detection unit detects the engagement operation by the flange clamp unit with classification into a normal engagement operation and an abnormal engagement operation.
    Type: Application
    Filed: October 7, 2020
    Publication date: April 8, 2021
    Applicant: TDK CORPORATION
    Inventors: Tomoshi ABE, Hiroshi HASEGAWA, Nozomu KATO, Hiroshi IGARASHI, Tadamasa IWAMOTO
  • Publication number: 20200348613
    Abstract: A developing cartridge includes a casing, a rotating member, and an electrode member. The casing may be configured to accommodate therein developer. The rotating member has a rotational shaft extending in an axial direction. The rotating member is configured to rotate about the rotational shaft and carries the developer thereon. The electrode member is configured to be electrically connected to the rotating member. The electrode member covers at least part of the rotational shaft from an orthogonal direction orthogonal to the axial direction and is arranged to confront the casing in the axial direction. The electrode member is configured to move in the orthogonal direction in accordance with a movement in the axial direction.
    Type: Application
    Filed: July 22, 2020
    Publication date: November 5, 2020
    Inventors: Yasumasa Fujii, Tsutomu Suzuki, Hiroshi Igarashi
  • Patent number: 10775713
    Abstract: A developing cartridge includes a casing, a rotating member, and an electrode member. The casing may be configured to accommodate therein developer. The rotating member has a rotational shaft extending in an axial direction. The rotating member is configured to rotate about the rotational shaft and carries the developer thereon. The electrode member is configured to be electrically connected to the rotating member. The electrode member covers at least part of the rotational shaft from an orthogonal direction orthogonal to the axial direction and is arranged to confront the casing in the axial direction. The electrode member is configured to move in the orthogonal direction in accordance with a movement in the axial direction.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: September 15, 2020
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yasumasa Fujii, Tsutomu Suzuki, Hiroshi Igarashi
  • Patent number: 10739696
    Abstract: A developing cartridge includes a casing, a rotating member, and an electrode member. The casing may be configured to accommodate therein developer. The rotating member has a rotational shaft extending in an axial direction. The rotating member is configured to rotate about the rotational shaft and carries the developer thereon. The electrode member is configured to be electrically connected to the rotating member. The electrode member covers at least part of the rotational shaft from an orthogonal direction orthogonal to the axial direction and is arranged to confront the casing in the axial direction. The electrode member is configured to move in the orthogonal direction in accordance with a movement in the axial direction.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: August 11, 2020
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yasumasa Fujii, Tsutomu Suzuki, Hiroshi Igarashi
  • Patent number: 10665488
    Abstract: A load port apparatus connects a main opening of a wafer transportation container with a frame opening. The load port apparatus includes an installation part, a frame, and a flange clamp. The installation part has an installation table configured to install the wafer transportation container and move to and from the frame opening. The frame is upright from the installation part and has the frame opening. The flange clamp includes an engagement portion and a drive portion. The engagement portion is configured to be engaged with a flange surrounding an outer circumference of the main opening. The drive portion is configured to drive the engagement portion. The engagement portion is engaged from above or the side with a flange groove formed in the flange and opening radially outwardly.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: May 26, 2020
    Assignee: TDK CORPORATION
    Inventors: Tadamasa Iwamoto, Hiroshi Igarashi
  • Publication number: 20200070244
    Abstract: One object of the present invention is to provide fine copper particles which are less likely to be deteriorated by oxidation in the atmosphere without being coated with an antioxidant or the like and which can be sintered at a lower temperature. The present invention provides fine copper particles wherein an entire surface is covered with a coating film containing cuprous oxide and having an average film thickness of 1.5 nm or less.
    Type: Application
    Filed: March 7, 2018
    Publication date: March 5, 2020
    Inventors: Yuji SAKURAMOTO, Hiroshi IGARASHI, Takayuki FUJIMOTO
  • Publication number: 20200012208
    Abstract: A developing cartridge includes a casing, a rotating member, and an electrode member. The casing may be configured to accommodate therein developer. The rotating member has a rotational shaft extending in an axial direction. The rotating member is configured to rotate about the rotational shaft and carries the developer thereon. The electrode member is configured to be electrically connected to the rotating member. The electrode member covers at least part of the rotational shaft from an orthogonal direction orthogonal to the axial direction and is arranged to confront the casing in the axial direction. The electrode member is configured to move in the orthogonal direction in accordance with a movement in the axial direction.
    Type: Application
    Filed: September 18, 2019
    Publication date: January 9, 2020
    Inventors: Yasumasa Fujii, Tsutomu Suzuki, Hiroshi Igarashi
  • Publication number: 20190375022
    Abstract: An object of the present invention to provide copper fine particles which can be sintered at a lower temperature than that of the conventional copper fine particles without causing a cost increase, a decrease in productivity, a method for producing the copper fine particles, and a sintered body, and the present invention provides copper fine particles having a coating film containing cuprous oxide and copper carbonate on the surface thereof.
    Type: Application
    Filed: February 5, 2018
    Publication date: December 12, 2019
    Inventors: Yuji SAKURAMOTO, Hiroshi IGARASHI, Takayuki FUJIMOTO
  • Publication number: 20190341273
    Abstract: A circulating EFEM includes an introduction port for introducing a gas, a housing for circulating the introduced gas, and a discharge port for discharging the gas from the housing into a discharge pipe. The discharge port includes a box and a damper. The box is disposed to surround a discharge opening formed on the housing and connected to the discharge pipe. The damper is disposed inside the box to close and open the discharge port and adjusts a discharge amount of the gas via the discharge opening by at least partially moving in response to a differential pressure between the housing and the box.
    Type: Application
    Filed: April 26, 2019
    Publication date: November 7, 2019
    Applicant: TDK CORPORATION
    Inventors: Hiroshi IGARASHI, Tsutomu OKABE, Mutsuo SASAKI
  • Patent number: 10444659
    Abstract: A developing cartridge includes a casing, a rotating member, and an electrode member. The casing may be configured to accommodate therein developer. The rotating member has a rotational shaft extending in an axial direction. The rotating member is configured to rotate about the rotational shaft and carries the developer thereon. The electrode member is configured to be electrically connected to the rotating member. The electrode member covers at least part of the rotational shaft from an orthogonal direction orthogonal to the axial direction and is arranged to confront the casing in the axial direction. The electrode member is configured to move in the orthogonal direction in accordance with a movement in the axial direction.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: October 15, 2019
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yasumasa Fujii, Tsutomu Suzuki, Hiroshi Igarashi
  • Patent number: 10333151
    Abstract: Provided is a method for producing a gas diffusion electrode, with which it is possible to more effectively improve electrode performance, in cases in which a core-shell catalyst is used as an electrode catalyst. This method for producing gas diffusion electrode comprises: a first step in which a support layer having electron conductivity, water-repellency and gas diffusion properties is soaked in water; a second step in which the constituent materials of ink for forming a catalyst layer are put into a mixer and mixed by agitation to prepare an ink for forming a catalyst layer; and a third step in which the ink for forming a catalyst layer is used to form a catalyst layer on the surface of the support layer obtained in the first step. The ink for forming the catalyst layer contains a core-shell catalyst, a polyelectrolyte, water and alcohol. The alcohol is only a polyvalent alcohol.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: June 25, 2019
    Assignee: N.E. CHEMCAT CORPORATION
    Inventors: Yasuhiro Seki, Takuya Tsubaki, Hiroshi Igarashi
  • Patent number: 10256475
    Abstract: Provided is an electrode catalyst that can exhibit sufficient performance, is suitable for mass production, and is suitable for reducing production costs, even when containing a relatively high concentration of chlorine. The electrode catalyst has a core-shell structure including a support; a core part that is formed on the support; and a shell part that is formed so as to cover at least one portion of the surface of the core part. A concentration of bromine (Br) species of the electrode catalyst as measured by X-ray fluorescence (XRF) spectroscopy is 500 ppm or less, and a concentration of chlorine (Cl) species of the electrode catalyst as measured by X-ray fluorescence (XRF) spectroscopy is 8,500 ppm or less.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: April 9, 2019
    Assignee: N.E. CHEMCAT CORPORATION
    Inventors: Kiyotaka Nagamori, Tomoteru Mizusaki, Yoko Nakamura, Takuya Tsubaki, Hiroshi Igarashi, Yasuhiro Seki