Patents by Inventor Eiichiro Hashimoto

Eiichiro Hashimoto 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: 10833473
    Abstract: A method of manufacturing a semiconductor device includes, in this order: preparing a bottom plate having an upper surface and a lower surface, wherein the upper surface includes an outer peripheral part and an inside part that is enclosed by the outer peripheral part and that protrudes more upward than the outer peripheral part, and wherein the lower surface of the bottom plate includes a reference part and a recess positioned above the reference part, at least a part of the recess being disposed directly below the outer peripheral part; joining a frame member to the outer peripheral part of the bottom plate, a linear expansion coefficient of the frame member being smaller than a linear expansion coefficient of the bottom plate; and fixing a semiconductor element to the inside part of the bottom plate.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: November 10, 2020
    Assignees: NICHIA CORPORATION, SHINKO ELECTRIC INDUSTRIES CO., LTD.
    Inventors: Takuya Hashimoto, Eiichiro Okahisa, Katsuya Nakazawa, Shigeru Matsushita, Sumio Uehara, Suguru Kobayashi, Kazuhito Yumoto
  • Publication number: 20200185881
    Abstract: A light emitting device includes: a base including: a main body, and a frame disposed on an upper surface of the main body; one or more laser elements disposed on the upper surface of the main body and positioned inward of the frame; a cover including: a support member that is fixed on an upper surface of the frame and has an opening inside the frame, and a light transmissive portion disposed so as to close the opening; and a lens body disposed on the support member and above the light transmissive portion. A difference between a thermal expansion coefficient of the light transmissive portion and a thermal expansion coefficient of the lens body is smaller than a difference between a thermal expansion coefficient of the light transmissive portion and a thermal expansion coefficient of the main body.
    Type: Application
    Filed: February 19, 2020
    Publication date: June 11, 2020
    Applicant: NICHIA CORPORATION
    Inventors: Takuya HASHIMOTO, Eiichiro OKAHISA
  • Publication number: 20200104024
    Abstract: A communication terminal communicable with a content management server includes circuitry to display a first operation display area, a content in the first operation display area based on data of the content transmitted by the content management server, and a second operation display area by a web browser, receive a drag and drop operation for causing the content displayed in the first operation display area to be dragged and dropped to the second operation display area, in response to reception of the drag and drop operation, transmit location specifying information to the content management server, receive the data of the dragged and dropped content to be displayed in the second operation display area, the data of the dragged and dropped content being transmitted by the content management server in response to transmission of the location specifying information, and display the dragged and dropped content in the second operation display area.
    Type: Application
    Filed: September 25, 2019
    Publication date: April 2, 2020
    Inventors: Hiroshi BABA, Eiichiro Yoshida, Naohiko Kubo, Yuuta Hashimoto
  • Patent number: 10608406
    Abstract: A light emitting device includes: a base including: a main body, and a frame disposed on an upper surface of the main body; one or more laser elements disposed on the upper surface of the main body inward of the frame; a cover comprising: a support member that is fixed on an upper surface of the frame and has an opening inside the frame, and a light transmissive portion disposed so as to close the opening; and a lens body disposed above the light transmissive portion. The support member includes; a first portion fixed on the upper surface of the frame, a second portion on which the lens body is disposed, the second portion being positioned inward of and lower than the first portion, and a third portion on which the light transmissive portion is disposed, the third portion being disposed inward of and lower than the second portion.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: March 31, 2020
    Assignee: NICHIA CORPORATION
    Inventors: Takuya Hashimoto, Eiichiro Okahisa
  • Publication number: 20200020468
    Abstract: To provide a rare earth permanent magnet having as a main phase a compound with a Nd5Fe17 crystalline structure having strong coercive force. A rare earth permanent magnet having as a main phase a compound with a Nd5Fe17 crystalline structure, wherein when the composition ratio of the rare earth permanent magnet is expressed as RaT(100-a-b)Cb, where R is one or more rare earth elements requiring Sm, and T is one or more transition metal elements requiring Fe or Fe and Co, a and b satisfy 18<a<40 and 0.5?b, and a phase where R and C are denser than the main phase is provided in the grain boundary phase of the rare earth permanent magnet.
    Type: Application
    Filed: November 30, 2017
    Publication date: January 16, 2020
    Applicant: TDK CORPORATION
    Inventors: Ryuji HASHIMOTO, Masashi ITO, Eiichiro FUKUCHI, Yuki NAGAMINE
  • Patent number: 10522969
    Abstract: A light-emitting device includes: a package body; a lid body connected to the package body, wherein the package body and the lid body together form a sealed space; and a plurality of light-emitting elements disposed in the sealed space. The lid body includes: a non-transmissive member including an outer frame, and one or more inner frames connected to the outer frame, wherein the outer frame and the one or more inner frames define a plurality of openings, a transmissive member integrally covering the plurality of openings and configured to allow light emitted from the plurality of light-emitting elements to be transmitted through the plurality of openings, and an adhesive member fixing the transmissive member to the non-transmissive member. The adhesive member is located on the outer frame and is not located on the one or more inner frames.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: December 31, 2019
    Assignees: NICHIA CORPORATION, SHINKO ELECTRIC INDUSTRIES CO., LTD.
    Inventors: Takuya Hashimoto, Kazuma Kozuru, Eiichiro Okahisa, Katsuya Nakazawa, Makoto Kubota
  • Publication number: 20190305511
    Abstract: A method of manufacturing a semiconductor device includes, in this order: preparing a bottom plate having an upper surface and a lower surface, wherein the upper surface includes an outer peripheral part and an inside part that is enclosed by the outer peripheral part and that protrudes more upward than the outer peripheral part, and wherein the lower surface of the bottom plate includes a reference part and a recess positioned above the reference part, at least a part of the recess being disposed directly below the outer peripheral part; joining a frame member to the outer peripheral part of the bottom plate, a linear expansion coefficient of the frame member being smaller than a linear expansion coefficient of the bottom plate; and fixing a semiconductor element to the inside part of the bottom plate.
    Type: Application
    Filed: March 26, 2019
    Publication date: October 3, 2019
    Applicants: NICHIA CORPORATION, SHINKO ELECTONIC INDUSTRIES CO., LTD.
    Inventors: Takuya Hashimoto, Eiichiro Okahisa, Katsuya Nakazawa, Shigeru Matsushita, Sumio Uehara, Suguru Kobayashi, Kazuhito Yumoto
  • Publication number: 20190165542
    Abstract: A light emitting device includes: a base including: a main body, and a frame disposed on an upper surface of the main body; one or more laser elements disposed on the upper surface of the main body inward of the frame; a cover comprising: a support member that is fixed on an upper surface of the frame and has an opening inside the frame, and a light transmissive portion disposed so as to close the opening; and a lens body disposed above the light transmissive portion. The support member includes; a first portion fixed on the upper surface of the frame, a second portion on which the lens body is disposed, the second portion being positioned inward of and lower than the first portion, and a third portion on which the light transmissive portion is disposed, the third portion being disposed inward of and lower than the second portion.
    Type: Application
    Filed: November 28, 2018
    Publication date: May 30, 2019
    Applicant: NICHIA CORPORATION
    Inventors: Takuya HASHIMOTO, Eiichiro OKAHISA
  • Patent number: 8269436
    Abstract: To prevent a step-out of a permanent magnet synchronous type motor (1), a motor control device (3a) is provided to include a flux control unit (16) for deriving an excitation current command value (i?*) according to the rotation speed (?e) of the motor, and a voltage shortage determination unit (30) for determining whether or not the supply voltage to the motor is running short based on the excitation current command value (i?*). When a negative excitation current command value (i?*) is smaller than a negative determination threshold value, the motor control device determines that the supply voltage is running short and prohibits an increase of the rotation speed or decreases the rotation speed.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: September 18, 2012
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Eiichiro Hashimoto, Yoshio Tomigashi
  • Patent number: 8115431
    Abstract: An inverter control apparatus that controls a three-phase inverter which transforms a direct-current voltage into an alternating three-phase voltage, the inverter control apparatus includes: a voltage command vector generation portion that generates a first voltage command vector for specifying a vector of a voltage to be applied to a three-phase load that is connected to the inverter; a voltage command vector correction portion that in performing overmodulation with the inverter, corrects the first voltage command vector by setting a limit onto a coordinate-axis component of the first voltage command vector on an ab coordinate system to generate a second voltage command vector, wherein the inverter is so controlled that a voltage depending on the second voltage command vector is applied to the load, and the ab coordinate system is a coordinated system that depending on a phase of the first voltage command vector with respect to a predetermined fixed axis on a two-dimensional fixed coordinate system, rotates
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: February 14, 2012
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Eiichiro Hashimoto, Yoshio Tomigashi
  • Patent number: 8084977
    Abstract: A motor control device performing vector control for a motor that drives a load whose load torque varies periodically. The motor control device has: a motor speed deriving portion estimating or detecting a motor speed; a speed controller producing a specified torque current value such that the motor speed is made to follow a specified motor speed value fed from outside; a resonance filter producing a corrected torque current value by receiving a control value that varies with variations in the load torque and emphasizing a periodic variation component of the control value; a torque current corrector producing a specified superimposed torque current value by superimposing the corrected torque current value on the specified torque current value; and an adjusting portion adjusting, based on the specified superimposed torque current value, the phase of the corrected torque value by controlling the resonance filter. The vector control is performed according to the specified superimposed torque current value.
    Type: Grant
    Filed: August 6, 2008
    Date of Patent: December 27, 2011
    Assignee: SANYO Electric Co., Ltd.
    Inventor: Eiichiro Hashimoto
  • Patent number: 8084976
    Abstract: A motor control device performing vector control for a motor that drives a load whose load torque varies periodically. The motor control device has: a motor speed deriving portion estimating or detecting a motor speed; a speed controller producing a specified torque current value such that the motor speed is made to follow a specified motor speed value fed from outside; a resonance filter producing a corrected torque current value by receiving a control value that varies with variations in the load torque and emphasizing a periodic variation component of the control value; a torque current corrector producing a specified superimposed torque current value by superimposing the corrected torque current value on the specified torque current value; and an adjusting portion adjusting, based on the specified superimposed torque current value, a degree of emphasis placed on the variation component by the resonance filter. The vector control is performed according to the specified superimposed torque current value.
    Type: Grant
    Filed: June 16, 2008
    Date of Patent: December 27, 2011
    Assignee: SANYO Electric Co., Ltd.
    Inventor: Eiichiro Hashimoto
  • Patent number: 7710066
    Abstract: A motor control device that controls a permanent-magnet synchronous motor has: a magnetic flux controller that derives, as a specified excitation current value, a specified current value corresponding to a d-axis component of a current passing through an armature winding; and a current controller that controls, based on the specified excitation current value, the current passing through the armature winding. The magnetic flux controller makes the specified excitation current value vary periodically, based on an estimated or detected rotor position, in a current range in which the magnetic flux produced by the permanent magnet is weakened, and changes the specified excitation current value according to a rotation speed of the rotor.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: May 4, 2010
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Eiichiro Hashimoto, Yoshio Tomigashi
  • Publication number: 20100060211
    Abstract: An inverter control apparatus that controls a three-phase inverter which transforms a direct-current voltage into an alternating three-phase voltage, the inverter control apparatus includes: a voltage command vector generation portion that generates a first voltage command vector for specifying a vector of a voltage to be applied to a three-phase load that is connected to the inverter; a voltage command vector correction portion that in performing overmodulation with the inverter, corrects the first voltage command vector by setting a limit onto a coordinate-axis component of the first voltage command vector on an ab coordinate system to generate a second voltage command vector, wherein the inverter is so controlled that a voltage depending on the second voltage command vector is applied to the load, and the ab coordinate system is a coordinated system that depending on a phase of the first voltage command vector with respect to a predetermined fixed axis on a two-dimensional fixed coordinate system, rotates
    Type: Application
    Filed: September 4, 2009
    Publication date: March 11, 2010
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Eiichiro HASHIMOTO, Yoshio TOMIGASHI
  • Patent number: 7598698
    Abstract: A motor control device includes a current detecting portion that detects phase current of one phase among three phase currents supplied from an inverter to a motor, and a current estimator that estimates phase current of phases other than the detected phase current by using a specified current value indicating current to be supplied to the motor, and derives control current corresponding to the specified current value from the estimated phase current and the phase current of one phase. The motor control device controls the motor via the inverter so that the control current follows the specified current value.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: October 6, 2009
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Eiichiro Hashimoto, Hajime Hida
  • Publication number: 20090237015
    Abstract: To prevent a step-out of a permanent magnet synchronous type motor (1), a motor control device (3a) is provided to include a flux control unit (16) for deriving an excitation current command value (i?*) according to the rotation speed (?e) of the motor, and a voltage shortage determination unit (30) for determining whether or not the supply voltage to the motor is running short based on the excitation current command value (i?*). When a negative excitation current command value (i?*) is smaller than a negative determination threshold value, the motor control device determines that the supply voltage is running short and prohibits an increase of the rotation speed or decreases the rotation speed.
    Type: Application
    Filed: March 19, 2009
    Publication date: September 24, 2009
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Eiichiro Hashimoto, Yoshio Tomigashi
  • Publication number: 20090039808
    Abstract: A motor control device performing vector control for a motor that drives a load whose load torque varies periodically. The motor control device has: a motor speed deriving portion estimating or detecting a motor speed; a speed controller producing a specified torque current value such that the motor speed is made to follow a specified motor speed value fed from outside; a resonance filter producing a corrected torque current value by receiving a control value that varies with variations in the load torque and emphasizing a periodic variation component of the control value; a torque current corrector producing a specified superimposed torque current value by superimposing the corrected torque current value on the specified torque current value; and an adjusting portion adjusting, based on the specified superimposed torque current value, the phase of the corrected torque value by controlling the resonance filter. The vector control is performed according to the specified superimposed torque current value.
    Type: Application
    Filed: August 6, 2008
    Publication date: February 12, 2009
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventor: Eiichiro HASHIMOTO
  • Publication number: 20080315816
    Abstract: A motor control device performing vector control for a motor that drives a load whose load torque varies periodically. The motor control device has: a motor speed deriving portion estimating or detecting a motor speed; a speed controller producing a specified torque current value such that the motor speed is made to follow a specified motor speed value fed from outside; a resonance filter producing a corrected torque current value by receiving a control value that varies with variations in the load torque and emphasizing a periodic variation component of the control value; a torque current corrector producing a specified superimposed torque current value by superimposing the corrected torque current value on the specified torque current value; and an adjusting portion adjusting, based on the specified superimposed torque current value, a degree of emphasis placed on the variation component by the resonance filter. The vector control is performed according to the specified superimposed torque current value.
    Type: Application
    Filed: June 16, 2008
    Publication date: December 25, 2008
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventor: Eiichiro HASHIMOTO
  • Patent number: 7394222
    Abstract: A power supply apparatus has a battery that is composed of a plurality of battery modules connected in series, a voltage detector that detects the relative voltages at the individual nodes between the battery modules with respect to a predetermined reference node, an erroneous detection checker that checks whether each of the detected relative voltages is an erroneously detected voltage and a normally detected voltage, and a calculation circuit that calculates the voltages of the individual battery modules based on those relative voltages that are judged to be normally detected voltages.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: July 1, 2008
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Eiichiro Hashimoto, Kimihiko Furukawa, Ryuji Yoshihara
  • Publication number: 20080079385
    Abstract: A motor control device includes a current detecting portion that detects phase current of one phase among three phase currents supplied from an inverter to a motor, and a current estimator that estimates phase current of phases other than the detected phase current by using a specified current value indicating current to be supplied to the motor, and derives control current corresponding to the specified current value from the estimated phase current and the phase current of one phase. The motor control device controls the motor via the inverter so that the control current follows the specified current value.
    Type: Application
    Filed: September 28, 2007
    Publication date: April 3, 2008
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Eiichiro Hashimoto, Hajime Hida