Patents by Inventor Hiroyuki Muto

Hiroyuki Muto 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: 20170323764
    Abstract: In this invention, vibrations generated by a freezer from a cooling mechanism for cooling an ion source emitter tip are prevented from being transmitted to the emitter tip as much as possible, while the cooling capability of the cooling mechanism is improved widely. The ion beam device (10) is equipped with: an ion source housing (22) provided with an emitter tip (45) and defining an ion source chamber (27) supplied with an ionization gas or gas molecules; a gas pot (51) provided in the ion source chamber (27) so as to be thermally connected to the emitter tip (45) and accommodated so as to have no direct physical contact with a cooling stage (57) of a freezer (52); and a spacer (59) provided on the peripheral surface of the cooling stage (57) housed by the gas pot (51) and maintaining a given interval or greater between the peripheral surface of the cooling stage (57) and the internal peripheral surface of the gas pot (52).
    Type: Application
    Filed: November 26, 2014
    Publication date: November 9, 2017
    Inventors: Hiroyuki MUTO, Yoshimi KAWANAMI
  • Patent number: 9766284
    Abstract: A sensor fault detection circuit includes: a first amplifier circuit that includes a first pair of elements operating reversely to each other, and amplifies a first sensor signal input from a first voltage amplifier; a second amplifier circuit that includes a second pair of elements operating reversely to each other, and amplifies a second sensor signal input from the second voltage amplifier; and a fault diagnosis unit that detects abnormality of a first voltage signal or a second voltage signal based on the first voltage signal output from the first amplifier circuit and the second voltage signal output from the second amplifier circuit. Characteristics of the first pair of elements are asymmetrical to each other, and characteristics of the second pair of elements are asymmetrical to each other in a same relationship with a relationship of the asymmetry between the characteristics of the first pair of elements.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: September 19, 2017
    Assignee: SHOWA CORPORATION
    Inventor: Hiroyuki Muto
  • Patent number: 9761407
    Abstract: The objective of the present invention is to provide an ion beam device capable of forming a nanopyramid stably having one atom at the front end of an emitter tip even when the cooling temperature is lowered in order to observe a sample with a high signal-to-noise ratio. In the present invention, the ion beam device, wherein an ion beam generated from an electric field-ionized gas ion source is irradiated onto the sample to observe or process the sample, holds the temperature of the emitter tip at a second temperature higher than a first temperature for generating the ion beam and lower than room temperature, sets the extraction voltage to a second voltage higher than the first voltage used when generating the ion beam, and causes field evaporation of atoms at the front end of the emitter tip, when forming the nanopyramid having one atom at the front end of the emitter tip.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: September 12, 2017
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Hiroyuki Muto, Yoshimi Kawanami, Hiroyasu Shichi, Shinichi Matsubara
  • Patent number: 9603756
    Abstract: A composite material for an absorbent article and a method for manufacturing said composite material, said composite material being obtained by causing an absorbent material to adhere by electrostatic interaction to a substrate material, the surface of the absorbent material being positively or negatively charged in a prescribed solvent selected from among a nonpolar organic solvent, a polar organic solvent, and a water/polar organic solvent mixture; and the surface of the composite material being charged to an electrical charge opposite to that of the surface of the substrate material, in the prescribed solvent. The substrate material has a fiber substrate or a plastic substrate, and a polyelectrolyte layer provided on the surface layer; and/or the absorbent material has an absorbent-particle substrate or an absorbent fiber substrate, and a polyelectrolyte layer provided on the surface layer.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: March 28, 2017
    Assignee: UNICHARM CORPORATION
    Inventors: Akihiro Kimura, Hiroyuki Muto, Norio Hakiri, Hideyo Yoshikawa, Atsunori Matsuda, Go Kawamura
  • Publication number: 20170066386
    Abstract: A vehicle visual recognition device comprises: a rotating body disposed at a vehicle exterior and supported by a vehicle body so as to be rotatable, and including a visual recognition unit that assists visual recognition of an occupant of a vehicle; an attachment member attached to the rotating body; and a projection unit including an optical member housed in a housing body, the housing body being retained by the attachment member, and the projection unit projecting an image outside the rotating body through the optical member.
    Type: Application
    Filed: September 6, 2016
    Publication date: March 9, 2017
    Inventors: Kazuhiro SAWADA, Hiroyuki MUTO
  • Patent number: 9581633
    Abstract: A relative angle detection apparatus includes a first magnetometric sensor and a first voltage amplifier that output a signal corresponding to a relative rotation angle between a first rotation shaft and a second rotation shaft; a first amplifier circuit that amplifies the output signal of the first voltage amplifier; a second magnetometric sensor and a second voltage amplifier that output a signal that corresponds to the relative rotation angle; a second amplifier circuit that amplifies the output signal of the second voltage amplifier; a first resistor that is provided between the first amplifier circuit and a power supply terminal, or between the first amplifier circuit and a GND terminal; and a second resistor that is provided between the second amplifier circuit and the power supply terminal, or between the second amplifier circuit and the GND terminal.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: February 28, 2017
    Assignee: SHOWA CORPORATION
    Inventor: Hiroyuki Muto
  • Publication number: 20160287451
    Abstract: A composite material for an absorbent article and a method for manufacturing said composite material, said composite material being obtained by causing an absorbent material to adhere by electrostatic interaction to a substrate material, the surface of the absorbent material being positively or negatively charged in a prescribed solvent selected from among a nonpolar organic solvent, a polar organic solvent, and a water/polar organic solvent mixture; and the surface of the composite material being charged to an electrical charge opposite to that of the surface of the substrate material, in the prescribed solvent. The substrate material has a fiber substrate or a plastic substrate, and a polyelectrolyte layer provided on the surface layer; and/or the absorbent material has an absorbent-particle substrate or an absorbent fiber substrate, and a polyelectrolyte layer provided on the surface layer.
    Type: Application
    Filed: November 4, 2014
    Publication date: October 6, 2016
    Inventors: Akihiro KIMURA, Hiroyuki MUTO, Norio HAKIRI, Hideyo YOSHIKAWA, Atsunori MATSUDA, Go KAWAMURA
  • Patent number: 9459165
    Abstract: A sensor unit includes a collector and a sensor housing. The collector faces a stator guiding a magnetic flux, with a void between the collector and the stator, and collectively attracts the magnetic flux guided by the stator. The sensor housing has a wall covering outside of the collector, and holds the collector. A clearance is formed between an opposite surface of the collector to a surface thereof facing the stator, and the wall of the sensor housing.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: October 4, 2016
    Assignee: SHOWA CORPORATION
    Inventors: Yohei Hama, Hiroyuki Muto, Kiyokazu Okado
  • Publication number: 20160252568
    Abstract: A sensor fault detection circuit includes: a first amplifier circuit that includes a first pair of elements operating reversely to each other, and amplifies a first sensor signal input from a first voltage amplifier; a second amplifier circuit that includes a second pair of elements operating reversely to each other, and amplifies a second sensor signal input from the second voltage amplifier; and a fault diagnosis unit that detects abnormality of a first voltage signal or a second voltage signal based on the first voltage signal output from the first amplifier circuit and the second voltage signal output from the second amplifier circuit. Characteristics of the first pair of elements are asymmetrical to each other, and characteristics of the second pair of elements are asymmetrical to each other in a same relationship with a relationship of the asymmetry between the characteristics of the first pair of elements.
    Type: Application
    Filed: January 27, 2016
    Publication date: September 1, 2016
    Applicant: Showa Corporation
    Inventor: Hiroyuki MUTO
  • Publication number: 20160225575
    Abstract: The objective of the present invention is to provide an ion beam device capable of forming a nanopyramid stably having one atom at the front end of an emitter tip even when the cooling temperature is lowered in order to observe a sample with a high signal-to-noise ratio. In the present invention, the ion beam device, wherein an ion beam generated from an electric field-ionized gas ion source is irradiated onto the sample to observe or process the sample, holds the temperature of the emitter tip at a second temperature higher than a first temperature for generating the ion beam and lower than room temperature, sets the extraction voltage to a second voltage higher than the first voltage used when generating the ion beam, and causes field evaporation of atoms at the front end of the emitter tip, when forming the nanopyramid having one atom at the front end of the emitter tip.
    Type: Application
    Filed: October 8, 2014
    Publication date: August 4, 2016
    Inventors: Hiroyuki MUTO, Yoshimi KAWANAMI, Hiroyasu SHICHI, Shinichi MATSUBARA
  • Publication number: 20150276519
    Abstract: A sensor unit includes a collector and a sensor housing. The collector faces a stator guiding a magnetic flux, with a void between the collector and the stator, and collectively attracts the magnetic flux guided by the stator. The sensor housing has a wall covering outside of the collector, and holds the collector. A clearance is formed between an opposite surface of the collector to a surface thereof facing the stator, and the wall of the sensor housing.
    Type: Application
    Filed: October 22, 2014
    Publication date: October 1, 2015
    Applicant: SHOWA CORPORATION
    Inventors: Yohei HAMA, Hiroyuki MUTO, Kiyokazu OKADO
  • Patent number: 9087675
    Abstract: Provided is an ion source emitter that does not cause significant extraction voltage changes even when an apex portion of the emitter is repeatedly regenerated. The emitter has a shape of a triangular pyramid with the single atom at the apex. An apex portion of the emitter is substantially shaped like a hexagon when viewed from the apex side.
    Type: Grant
    Filed: June 20, 2012
    Date of Patent: July 21, 2015
    Assignee: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Yoshimi Kawanami, Hironori Moritani, Hiroyuki Muto
  • Publication number: 20150190840
    Abstract: A device and process for producing composite particles capable of adding a control agent for controlling a surface charge of particles such as a polymer electrolyte without being in excess or short. The production device includes a reservoir tank holding liquid containing either a first group or a second group of particles; a dispersion state measuring mechanism measuring a dispersion state of the particles in the liquid held in the reservoir tank; a dispersion state storage storing the dispersion state measured by the dispersion state measuring mechanism when a control agent for controlling a surface charge of the particles contained in the liquid in the reservoir tank is added into the reservoir tank; and an information output outputting information indicating that the dispersion state of the particles in the liquid in the reservoir tank is a desired state, based on the dispersion state stored in the dispersion state storage.
    Type: Application
    Filed: March 29, 2012
    Publication date: July 9, 2015
    Applicant: National University Corporation Toyohashi University of Technology
    Inventors: Hiroyuki Muto, Norio Hakiri, Atsunori Matsuda, Go Kawamura
  • Patent number: 9074934
    Abstract: The present invention enables high-speed and high-precision correction of a ghost detected in a spectrum measuring apparatus. A ghost is detected from spectrum data of reference light measured by the apparatus, and for each wavelength of input light, a light amount ratio ? of the input light to the corresponding ghost, as well as a shift amount di indicative of a wavelength difference between the input light and the corresponding ghost are acquired. For each spectrum wavelength of the measured light, wavelength shifting for the corresponding shift amount di and multiplication of the light amount ratio (or intensity ratio) ? are performed for estimating the ghost. By removing the estimated ghost from the measured light, it is possible to realize high-precision ghost correction with a reduced amount of calculation and a reduced amount of memory.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: July 7, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroyuki Muto
  • Patent number: 9018945
    Abstract: A relative angle sensing device that senses a relative angle between two rotary shafts is provided with: a hard magnetic body that is provided to one rotary shaft out of the two rotary shafts; a soft magnetic body that is provided to the other rotary shaft out of the two rotary shafts to be arranged in a magnetic field formed by the hard magnetic body, and forms a magnetic circuit together with the hard magnetic body; and a sensing unit that senses a magnetic flux density of the magnetic circuit. The soft magnetic body has a circular ring portion that is formed into a disc having, at an inside thereof, a hole larger than an outer shape of the hard magnetic body, and a protrusion that protrudes from a section of the circular ring portion at a hard magnetic body side in a shaft direction of the one rotary shaft.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: April 28, 2015
    Assignee: Showa Corporation
    Inventor: Hiroyuki Muto
  • Patent number: 8981315
    Abstract: To avoid a glow discharge during the use of a conventional gas ionization chamber, there is no alternative but to increase a gas pressure. Therefore, while a conventional gas ionization chamber is used, an ion current cannot be increased by raising a gas introduction pressure. An object of the present invention is to increase the ion current by raising the gas pressure and prevent an ion beam from being scattered by an ionization gas. The gas is supplied from a structure maintained at a ground potential to prevent the application of a high voltage to the vicinity of an ionization gas introduction port at which the gas pressure is relatively high. Further, the ionization gas existing in a region through which the ion beam passes is preferentially reduced by performing differential evacuation from a lens opening in a lens electrode that forms an acceleration/focusing lens.
    Type: Grant
    Filed: May 28, 2012
    Date of Patent: March 17, 2015
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Hiroyuki Muto, Yoshimi Kawanami
  • Patent number: 8967880
    Abstract: In order to fix an optical fiber to a desired position in a holding member easily and tightly, provided is an optical collimator (10) having a plastic optical fiber (13) and a cylindrical holder (11). The holder (11) is configured to hold a collimator lens (12) at an end and has an insertion hole (11a) at an opposite end for inserting the plastic optical fiber (13). The plastic optical fiber (13) is sandwiched by an inner surface of a recess (11e) which is formed at a part of the holder (11) in proper alignment with the collimator lens (12).
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: March 3, 2015
    Assignees: Mitsubishi Pencil Company, Limited, Japan Aviation Electronics Industry, Limited, Yasuhiro Koike
    Inventors: Yasuhiro Koike, Hitoshi Suzuki, Hiroyuki Muto, Akihito Mitsui, Naohiko Moriya, Toshitaka Torikai, Takayoshi Yamauchi
  • Patent number: 8939590
    Abstract: A covering member appropriately covers an opening hole in a accommodating body. In a vehicle door mirror device, look of a visor body at the outer periphery of a mirror is enhanced by an upper covering plate and a lower covering plate of an inner cover covering an upper recess portion and a lower recess portion, respectively, in a peripheral wall of the visor body. The upper covering plate and the lower covering plate abut the upper recess portion and the lower recess portion, respectively. The upper covering plate and the lower covering plate can accordingly be positioned in the upper recess portion and the lower recess portion, respectively. The upper covering plate and the lower covering plate can accordingly appropriately cover the upper recess portion and the lower recess portion, respectively.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: January 27, 2015
    Assignee: Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho
    Inventors: Kazuhiro Sawada, Hiroyuki Muto
  • Publication number: 20150015270
    Abstract: A relative angle detection apparatus includes a first magnetometric sensor and a first voltage amplifier that output a signal corresponding to a relative rotation angle between a first rotation shaft and a second rotation shaft; a first amplifier circuit that amplifies the output signal of the first voltage amplifier; a second magnetometric sensor and a second voltage amplifier that output a signal that corresponds to the relative rotation angle; a second amplifier circuit that amplifies the output signal of the second voltage amplifier; a first resistor that is provided between the first amplifier circuit and a power supply terminal, or between the first amplifier circuit and a GND terminal; and a second resistor that is provided between the second amplifier circuit and the power supply terminal, or between the second amplifier circuit and the GND terminal.
    Type: Application
    Filed: October 30, 2012
    Publication date: January 15, 2015
    Applicant: SHOWA CORPORATION
    Inventor: Hiroyuki Muto
  • Patent number: 8847173
    Abstract: To provide a gas field ion source having a high angular current density, the gas field ion source is configured such that at least a base body of an emitter tip configuring the gas field ion source is a single crystal metal, such that the apex of the emitter tip is formed into a pyramid shape or a cone shape having a single atom at the top, and such that the extraction voltage in the case of ionizing helium gas by the single atom is set to 10 kV or more.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: September 30, 2014
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Yoshimi Kawanami, Shinichi Matsubara, Hironori Moritani, Noriaki Arai, Hiroyasu Shichi, Tomihiro Hashizume, Hiroyasu Kaga, Norihide Saho, Hiroyuki Muto, Yoichi Ose