Patents by Inventor Masao Yamaguchi

Masao Yamaguchi 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: 10705544
    Abstract: In order to restrain generation of a peak in the measured flow rate, a fluid control unit measures a flow rate of a fluid in a channel and outputs a signal indicating a valve operation amount of a fluid control valve obtained based on a deviation between a preset flow rate and a measured flow rate and a control coefficient, and the control coefficient for a stable state and the control coefficient for a transitional state are so set to moderate fluctuation of the valve operation amount to the deviation more in the transitional state than in the stable state. At or shortly after a timing when the stable state is switched to the transitional state, a signal is output that indicates an operation amount for a switching time calculated based on each of the operation amounts output at a plurality of timings in the stable state.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: July 7, 2020
    Assignee: HORIBA STEC, Co., Ltd.
    Inventors: Kazuhiro Matsuura, Masao Yamaguchi, Kentaro Nagai
  • Publication number: 20200188881
    Abstract: Provided is a method of producing a catalyst or adsorbent carrier and a catalyst or adsorbent carrier which can enhance a catalyst or adsorbent function, and prevent fall-off of catalyst particles or adsorbent particles. The surface of a metal base material made of aluminum or an aluminum alloy is subjected to an etching process using an etchant containing iron chloride and an oxide to convert the surface to an uneven and rough surface. The uneven and rough surface of the metal base material is subjected to an anodizing process to form a porous coating along the uneven and rough surface. A large number of catalyst or adsorbent particles are thus carried on the surface of the metal base material on which the porous coating is formed along the uneven and rough surface.
    Type: Application
    Filed: May 25, 2018
    Publication date: June 18, 2020
    Applicant: APS Japan Co., Ltd.
    Inventors: Takafumi WATANABE, Masao YAMAGUCHI, Teruo WATANABE, Hidemitsu WATANABE, Hiroyuki WATANABE
  • Publication number: 20200145540
    Abstract: According to one embodiment, a generation source identifying apparatus and an image forming apparatus capable of identifying a generation source of abnormal sound are provided. The generation source identifying apparatus includes a memory and a processor. The memory is configured to store information on a driving frequency of a plurality of driving mechanisms. The processor is configured to detect an abnormal sound from sound of the plurality of driving mechanisms, determine a generation interval of the abnormal sound, and identify a respective driving mechanism of the plurality of driving mechanisms as a generation source of the abnormal sound based on the generation interval of the abnormal sound and the information stored in the memory.
    Type: Application
    Filed: August 12, 2019
    Publication date: May 7, 2020
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Masao YAMAGUCHI
  • Patent number: 10503179
    Abstract: A flow rate control apparatus is provided which enables high speed response particularly in a transient response state, such as when a target flow rate falls. The flow rate control apparatus includes: a valve provided with a position sensor to measure an opening degree and disposed in a flow channel; a flow rate sensor disposed upstream of the valve and provided with a restrictor; a first pressure sensor disposed downstream of the restrictor and disposed upstream of the valve; a second pressure sensor disposed downstream of the valve; a storage section to store a characteristic map indicating a relationship between at least the opening degree of the valve, a differential pressure before and after the valve, and a flow rate of a fluid passing through the flow channel; and a valve control section to control the valve so that the flow rate reaches an accepted target flow rate.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: December 10, 2019
    Assignee: HORIBA STEC, Co., Ltd.
    Inventors: Shigeyuki Hayashi, Kentaro Nagai, Masao Yamaguchi
  • Patent number: 10486926
    Abstract: A paper sheet transporting apparatus includes a transporting guide through which a paper sheet is transported and a sound propagation guide to transmit sound that is provided separately from the transporting guide by connecting two positions separated from each other on the transporting guide. When a difference between a length between the two positions of the transporting guide and a length of the sound propagation guide connecting the two positions is defined as ?L(m), m=(2n?1) (n is an integer) is satisfied, and a wavelength of a sound deadening symmetrical sound is defined as ?(m), ?L=m·?/2 is satisfied.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: November 26, 2019
    Assignee: TOSHIBA TEC KABUSHIKI
    Inventor: Masao Yamaguchi
  • Publication number: 20190349497
    Abstract: A paper sheet transporting apparatus includes a transporting guide through which a paper sheet is transported and a sound propagation guide to transmit sound that is provided separately from the transporting guide by connecting two positions separated from each other on the transporting guide. When a difference between a length between the two positions of the transporting guide and a length of the sound propagation guide connecting the two positions is defined as ?L(m), m=(2n?1) (n is an integer) is satisfied, and a wavelength of a sound deadening symmetrical sound is defined as ?(m), ?L=m·?/2 is satisfied.
    Type: Application
    Filed: May 14, 2018
    Publication date: November 14, 2019
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Masao YAMAGUCHI
  • Publication number: 20190211631
    Abstract: Provided is a threaded joint for oil country tubular goods. The threaded joint includes: a pin having an annular outer peripheral surface portion formed on a tip end side of a steel pipe, and an externally-threaded portion formed from the annular outer peripheral surface portion toward a center of a steel pipe in an axial direction of the steel pipe; and a box having a cavity in which the pin is housed, wherein an internally-threaded portion which threadedly engages with the externally-threaded portion and an annular inner peripheral surface portion which is brought into contact with and abuts against the annular outer peripheral surface portion are formed in the cavity, wherein the pin and the box are joined to each other due to threaded engagement between the externally-threaded portion and the internally-threaded portion.
    Type: Application
    Filed: July 20, 2017
    Publication date: July 11, 2019
    Applicant: JFE Steel Corporation
    Inventor: Masao Yamaguchi
  • Patent number: 10108127
    Abstract: An image forming apparatus includes an openable/closable cover body in a main body. The cover body has a first cover member, a second cover member, an engagement member, an elastic body, and a support member. The support member rotatably supports the engagement member. The support member collides with the engagement member which is energized by the elastic body and is rotated when the cover body becomes in a closed state, to stop rotation of the engagement member. The support member is fitted on the first cover member separately from the second cover member.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: October 23, 2018
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventor: Masao Yamaguchi
  • Publication number: 20180278786
    Abstract: A case of an exemplary embodiment accommodates an apparatus including a movable part and includes a case base, a first member, and a second member. The first member includes a first surface and a second surface opposing each other, and is provided with a hole formed by opening at least a side of the second surface, among a side of the first surface and the side of the second surface. The second member includes a third surface and a fourth surface opposing each other, and is provided with a communicating hole formed by opening both a side of the third surface and a side of the fourth surface. The first member is provided such that the first surface is in contact with a wall surface of a side of the apparatus of the case base.
    Type: Application
    Filed: March 23, 2017
    Publication date: September 27, 2018
    Inventor: Masao Yamaguchi
  • Publication number: 20180253112
    Abstract: In order to restrain generation of a peak in the measured flow rate, a fluid control unit measures a flow rate of a fluid in a channel and outputs a signal indicating a valve operation amount of a fluid control valve obtained based on a deviation between a preset flow rate and a measured flow rate and a control coefficient, and the control coefficient for a stable state and the control coefficient for a transitional state are so set to moderate fluctuation of the valve operation amount to the deviation more in the transitional state than in the stable state. At or shortly after a timing when the stable state is switched to the transitional state, a signal is output that indicates an operation amount for a switching time calculated based on each of the operation amounts output at a plurality of timings in the stable state.
    Type: Application
    Filed: March 2, 2018
    Publication date: September 6, 2018
    Inventors: Kazuhiro Matsuura, Masao Yamaguchi, Kentaro Nagai
  • Publication number: 20180173249
    Abstract: A flow rate control apparatus is provided which enables high speed response particularly in a transient response state, such as when a target flow rate falls. The flow rate control apparatus includes: a valve provided with a position sensor to measure an opening degree and disposed in a flow channel; a flow rate sensor disposed upstream of the valve and provided with a restrictor; a first pressure sensor disposed downstream of the restrictor and disposed upstream of the valve; a second pressure sensor disposed downstream of the valve; a storage section to store a characteristic map indicating a relationship between at least the opening degree of the valve, a differential pressure before and after the valve, and a flow rate of a fluid passing through the flow channel; and a valve control section to control the valve so that the flow rate reaches an accepted target flow rate.
    Type: Application
    Filed: December 5, 2017
    Publication date: June 21, 2018
    Inventors: Shigeyuki Hayashi, Kentaro Nagai, Masao Yamaguchi
  • Publication number: 20180081315
    Abstract: An image forming apparatus includes an openable/closable cover body in a main body. The cover body has a first cover member, a second cover member, an engagement member, an elastic body, and a support member. The support member rotatably supports the engagement member. The support member collides with the engagement member which is energized by the elastic body and is rotated when the cover body becomes in a closed state, to stop rotation of the engagement member. The support member is fitted on the first cover member separately from the second cover member.
    Type: Application
    Filed: August 9, 2017
    Publication date: March 22, 2018
    Inventor: Masao YAMAGUCHI
  • Patent number: 9837811
    Abstract: The power source apparatus enables each battery pack to be charged with power supplied from an external charging power supply, and allows power stored in each battery pack to be output externally. Each battery pack is provided with battery pack fault output terminals to send battery pack error signals to other battery packs or to the protection unit when a malfunction occurs. The protection unit is provided with protection unit input-output terminals to connect with battery pack fault output terminals, and a protection circuit capable of cutting-off battery pack current. When a battery pack malfunction occurs, a battery pack error signal is output from the battery pack fault output terminals to the protection unit input-output terminals. When the protection unit detects a battery pack error signal, the protection circuit cuts-off current.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: December 5, 2017
    Assignee: SANYO ELECTRIC CO., LTD.
    Inventors: Masao Yamaguchi, Takanori Harada
  • Patent number: 9752750
    Abstract: A light flux controlling member includes a concavity on which light is incident on, a light control/emission surface that controls a traveling direction of light incident on the concavity, and a back surface that extends in a radial direction from an opening rim part of the concavity. One of a grid convex part which arranges a plurality of strips of convex parts in a grid pattern and a grid concave part which arranges a plurality of strips of concave parts in a grid pattern is formed in the back surface. A method of manufacturing the light flux controlling member includes forming one of the grid convex part and the grid concave part integrally with a main body of the light flux controlling member by integral molding using a mold having a shape corresponding to one of the grid convex part and the grid concave part.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: September 5, 2017
    Assignee: ENPLAS CORPORATION
    Inventors: Masao Yamaguchi, Yasuyuki Fukuda
  • Patent number: 9671550
    Abstract: A surface light source device includes a light source, a plurality of light guide rods that are disposed in parallel and allow light emitted from the light source to enter through an end surface and emits the incident light through an outer peripheral surface, and a diffusion plate that transmits light emitted from the light guide rod while diffusing the light. The light guide rod includes a light control part disposed on a surface along an axis of the light guide rod, and scattering, reflecting, or emitting light guided inside the light guide rod. Further, when an angle of a direction of a perpendicular relative to an extending direction of the diffusion plate from the center of the light guide rod is set as 0°, an angle of light having peak intensity to be emitted from the light guide rod is 30° to 90°.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: June 6, 2017
    Assignee: Enplas Corporation
    Inventors: Yusuke Ohashi, Masao Yamaguchi
  • Publication number: 20170089543
    Abstract: A light flux controlling member includes a concavity on which light is incident on, a light control/emission surface that controls a traveling direction of light incident on the concavity, and a back surface that extends in a radial direction from an opening rim part of the concavity. One of a grid convex part which arranges a plurality of strips of convex parts in a grid pattern and a grid concave part which arranges a plurality of strips of concave parts in a grid pattern is formed in the back surface. A method of manufacturing the light flux controlling member includes forming one of the grid convex part and the grid concave part integrally with a main body of the light flux controlling member by integral molding using a mold having a shape corresponding to one of the grid convex part and the grid concave part.
    Type: Application
    Filed: December 8, 2016
    Publication date: March 30, 2017
    Inventors: Masao YAMAGUCHI, Yasuyuki FUKUDA
  • Patent number: 9546773
    Abstract: A surface light source apparatus has a light emitting element, a light flux controlling member and a light diffusing member. The light flux controlling member has: a light control/emission surface that controls a traveling direction of light; a concavity that allows a main beam to be incident inside; and a back surface that extends in a radial direction from an opening rim part of the concavity and that allows sub-beams to be incident inside. One of a grid convex part which arranges a plurality of strips of convex parts in a grid pattern and a grid concave part which arranges a plurality of strips of concave parts in a grid pattern is formed in the back surface of the light flux controlling member. Surface roughening treatment is applied to one of the strips of the convex parts and the strips of the concave parts.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: January 17, 2017
    Assignee: ENPLAS Corporation
    Inventors: Masao Yamaguchi, Yasuyuki Fukuda
  • Patent number: 9544694
    Abstract: A piezoelectric vibration module includes a piezoelectric element, a wiring member connected to the piezoelectric element and drawn out to the outside, and an elastic plate bonded to one surface of the piezoelectric element, wherein the elastic plate is made of a silicone rubber.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: January 10, 2017
    Assignee: NEC TOKIN CORPORATION
    Inventors: Yoshiyuki Abe, Takeshi Mizuno, Hiroshi Shima, Masao Yamaguchi, Noriaki Ikezawa, Katsunori Kumasaka
  • Patent number: 9529183
    Abstract: A surface light source device includes substrate, a plurality of light emitting devices disposed at constant intervals on substrate, and light diffusion plate disposed substantially parallel to substrate over the plurality of light emitting devices. Light emitting device includes light emitting element and light flux controlling member. A luminous intensity of light from light emitting device is gradually increased as an angle relative to optical axis becomes larger in an angular range from a direction along optical axis of light emitting device to a direction of emission of light with the highest luminous intensity from light emitting device. An angle of the light with the highest luminous intensity from the light emitting device is more than 78.7° relative to the optical axis. Surface light source device satisfies two Equations of H/P?0.2, and I1/2/I0>6.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: December 27, 2016
    Assignee: ENPLAS CORPORATION
    Inventors: Hiroshi Takatori, Masao Yamaguchi
  • Patent number: RE47891
    Abstract: A display has a member irradiated by a surface light source device comprising a light diffusion member and emission device. The emission device is provided with a light flux control member having a recess and light control emission face which is configurated so as to satisfy Conditions 1 and 2 in a range at least covering a half-intensity-angular-range. Light emitting element(s) may be sealed. Condition 1 is that relation ?5/?1>1 is satisfied except for light emitted from a light emitting element toward within an angular-neighbourhood of a standard optical axis of the emission device, and Condition 2 is that value of ?5/?1 decreases gradually according to increasing of ?1, where ?1 is an emission angle of any light at being emitted from the light emitting element, and ?5 is an emission angle of that light of ?1 at then being emitted from the light control emission face of the light flux control member.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: March 3, 2020
    Assignee: Enplas Corporation
    Inventors: Masao Yamaguchi, Shingo Ohkawa