Patents by Inventor Kazutaka Ikeda

Kazutaka Ikeda 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: 20220308093
    Abstract: A current measurement system is configured to measure an alternating-current (AC) current flowing through a conductor. The AC current has a frequency within a measurement range. The system includes a current sensor and a shunt resistor. The current sensor includes a measurement coil configured to be magnetically coupled to the conductor. The shunt resistor has both ends electrically connected to both ends of the measurement coil, respectively. An output voltage across the both ends of the shunt resistor is saturated at a saturation point in a saturation frequency of the frequency of the AC current. An upper limit value of the measurement range including the frequency is higher than a fundamental frequency of the AC current. The saturation frequency is higher than or equal to the upper limit value. The current measurement system improves sensitivity to frequency components higher than the fundamental frequency of the AC current.
    Type: Application
    Filed: February 25, 2020
    Publication date: September 29, 2022
    Inventors: YUTA SATO, HIROHIDE ICHIHASHI, KAZUTAKA IKEDA
  • Patent number: 11411646
    Abstract: The purpose of the present invention is to provide an optical/RF wireless hybrid communication system and a control method capable of solving the instability of link conditions of an RF wireless link and an optical wireless link. In the optical/RF wireless hybrid communication system and the control method according to the present invention, links for data transmission are not limited to one of an RF wireless link and an optical wireless link, the quality of link conditions is determined from signal quality received through channels of both the RF wireless link and the optical wireless link, and the distribution of data to be transmitted through the respective links is determined on the basis of the determination result. Thus, the links can be flexibly switched depending on the transmission conditions such as disturbance.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: August 9, 2022
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Ryota Shiina, Kazutaka Hara, Satoshi Ikeda
  • Publication number: 20210349132
    Abstract: A diagnosis system is configured to diagnose an apparatus including a driver device. The system includes an acquisition unit configured to acquire waveform data indicating a waveform related to a current to be supplied to the driver device, and a determination unit configured to determine a condition of the apparatus. The determination unit is configured to obtain, based on the waveform data, a change caused by a component of a force in a particular direction applied to the driver device, and to determine the condition of the apparatus based on the obtained change. The diagnosis device determines the condition of the apparatus accurately.
    Type: Application
    Filed: November 18, 2019
    Publication date: November 11, 2021
    Inventors: KAZUTAKA IKEDA, KENTA KAMIZONO, HIROTO NAKANO
  • Patent number: 10707643
    Abstract: The purpose of the present invention is to provide a laser light source module that is capable of heat dissipation from a laser device and of suppressing the diffusion of a light beam due to the close arrangement of the laser device. The laser light source module comprises a stem that is a base plate and first and second laser assemblies disposed on the stem. Each of the laser assemblies comprises a multi-emitter LD bar that is a laser device emitting a laser light along an optical axis, and a holding member having a mounting surface parallel to the axis, the multi-emitter LD bar being mounted on the mounting surface. The first and second laser assemblies are positioned such that the optical axes of the assemblies are parallel to each other and that the mounting surfaces of the assemblies are arranged opposite to each other in parallel.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: July 7, 2020
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Daisuke Morita, Kazutaka Ikeda, Motoaki Tamaya
  • Publication number: 20190332936
    Abstract: A determiner which learns acceleration measurement data which has been obtained by an accelerated aging test and indicates that a facility changes from a normal state to an aged state, and advance label data which is obtained by giving a label to data indicating characteristics of aging in the acceleration measurement data. Measurement data of aging diagnosis is obtained from the facility which is operating, teacher aging degree label data is found from a record of maintenance of the facility, and additional data is obtained from the measurement data and the teacher aging degree label data. When a difference between predicted aging degree label data and teacher aging degree label data is greater than a predetermined value, learning data is selected as additional learning data. The additional learning data is learned to update the determiner.
    Type: Application
    Filed: January 26, 2018
    Publication date: October 31, 2019
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Naofumi Shimasaki, Kazutaka Ikeda
  • Publication number: 20190229491
    Abstract: The purpose of the present invention is to provide a laser light source module that is capable of heat dissipation from a laser device and of suppressing the diffusion of a light beam due to the close arrangement of the laser device. The laser light source module comprises a stem that is a base plate and first and second laser assemblies disposed on the stem. Each of the laser assemblies comprises a multi-emitter LD bar that is a laser device emitting a laser light along an optical axis, and a holding member having a mounting surface parallel to the axis, the multi-emitter LD bar being mounted on the mounting surface. The first and second laser assemblies are positioned such that the optical axes of the assemblies are parallel to each other and that the mounting surfaces of the assemblies are arranged opposite to each other in parallel.
    Type: Application
    Filed: April 4, 2019
    Publication date: July 25, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Daisuke MORITA, Kazutaka IKEDA, Motoaki TAMAYA
  • Patent number: 10297975
    Abstract: The purpose of the present invention is to provide a laser light source module that is capable of heat dissipation from a laser device and of suppressing the diffusion of a light beam due to the close arrangement of the laser device. The laser light source module comprises a stem that is a base plate and first and second laser assemblies disposed on the stem. Each of the laser assemblies comprises a multi-emitter LD bar that is a laser device emitting a laser light along an optical axis, and a holding member having a mounting surface parallel to the axis, the multi-emitter LD bar being mounted on the mounting surface. The first and second laser assemblies are positioned such that the optical axes of the assemblies are parallel to each other and that the mounting surfaces of the assemblies are arranged opposite to each other in parallel.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: May 21, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Daisuke Morita, Kazutaka Ikeda, Motoaki Tamaya
  • Patent number: 10277011
    Abstract: Provided is a laser light source device which has a plurality of semiconductor laser elements arranged in an array and is provided with: a heat sink; a sub-mount substrate which is placed on one end edge of the heat sink, which has a power feed path, and on which the semiconductor laser array is mounted; an insulation plate placed in an area other than the sub-mount substrate on the heat sink; a first electrode plate mounted on the insulation plate; a second electrode plate mounted on the insulation plate separately from the first electrode plate; metal wires electrically connecting respectively between the first electrode plate and the sub-mount substrate and between the second electrode plate and the semiconductor laser array; and a cooling block on which the heat sink is mounted and which has a cooling water flow channel inside of the cooling block.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: April 30, 2019
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kazutaka Ikeda, Daisuke Morita, Motoaki Tamaya
  • Publication number: 20190044303
    Abstract: A semiconductor laser light source device wherein a plate-shaped semiconductor laser array has a first electrode and a second electrode, the first electrode is bonded to an electrode layer of a sub-mount substrate in which the electrode layer is formed on one surface of a substrate formed of electrical insulation material and the sub-mount substrate surface which is a surface opposite to a surface on which the electrode layer is formed is bonded to a heat sink made of metal, and in a region which is formed by projecting the sub-mount substrate to inside of the heat sink from the Y direction, a cooling part wherein a plurality of flat flow channels having a width of 200 ?m to 600 ?m, a depth of 3 mm to 5 mm are aligned at a pitch equal to or less than 1 mm is formed.
    Type: Application
    Filed: February 14, 2017
    Publication date: February 7, 2019
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Daisuke MORITA, Motoaki TAMAYA, Kazutaka IKEDA, Yumi GENDA
  • Publication number: 20180278012
    Abstract: The purpose of the present invention is to provide a laser light source module that is capable of heat dissipation from a laser device and of suppressing the diffusion of a light beam due to the close arrangement of the laser device. The laser light source module comprises a stem that is a base plate and first and second laser assemblies disposed on the stem. Each of the laser assemblies comprises a multi-emitter LD bar that is a laser device emitting a laser light along an optical axis, and a holding member having a mounting surface parallel to the axis, the multi-emitter LD bar being mounted on the mounting surface. The first and second laser assemblies are positioned such that the optical axes of the assemblies are parallel to each other and that the mounting surfaces of the assemblies are arranged opposite to each other in parallel.
    Type: Application
    Filed: October 27, 2015
    Publication date: September 27, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Daisuke MORITA, Kazutaka IKEDA, Motoaki TAMAYA
  • Publication number: 20180226772
    Abstract: Provided is a laser light source device which has a plurality of semiconductor laser elements arranged in an array and is provided with: a heat sink; a sub-mount substrate which is placed on one end edge of the heat sink, which has a power feed path, and on which the semiconductor laser array is mounted; an insulation plate placed in an area other than the sub-mount substrate on the heat sink; a first electrode plate mounted on the insulation plate; a second electrode plate mounted on the insulation plate separately from the first electrode plate; metal wires electrically connecting respectively between the first electrode plate and the sub-mount substrate and between the second electrode plate and the semiconductor laser array; and a cooling block on which the heat sink is mounted and which has a cooling water flow channel inside of the cooling block.
    Type: Application
    Filed: October 16, 2015
    Publication date: August 9, 2018
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kazutaka IKEDA, Daisuke MORITA, Motoaki TAMAYA
  • Publication number: 20170357750
    Abstract: The present invention provides a method for evaluating (predicting, etc.) an individual difference (the tendency of every individual) in terms of drug sensitivity and disease vulnerability, comprising using a gene polymorphism of a cyclic AMP responsive element binding protein gene or the like. The method for evaluating drug sensitivity and the method for evaluating disease vulnerability according to the present invention comprise associating a gene polymorphism of a cyclic AMP responsive element binding protein gene or a haplotype constituted by the gene polymorphism with the drug sensitivity and disease vulnerability of an individual.
    Type: Application
    Filed: July 10, 2017
    Publication date: December 14, 2017
    Applicant: TOKYO METROPOLITAN INSTITUTE OF MEDICAL SCIENCE
    Inventors: Kazutaka IKEDA, Daisuke NISHIZAWA, Kenichi FUKUDA
  • Patent number: 9727691
    Abstract: The present invention provides a method for evaluating (predicting, etc.) an individual difference (the tendency of every individual) in terms of drug sensitivity and disease vulnerability, comprising using a gene polymorphism of a cyclic AMP responsive element binding protein gene or the like. The method for evaluating drug sensitivity and the method for evaluating disease vulnerability according to the present invention comprise associating a gene polymorphism of a cyclic AMP responsive element binding protein gene or a haplotype constituted by the gene polymorphism with the drug sensitivity and disease vulnerability of an individual.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: August 8, 2017
    Inventors: Kazutaka Ikeda, Daisuke Nishizawa, Kenichi Fukuda
  • Patent number: 9450380
    Abstract: A sub-mount includes a sub-mount substrate, an Au layer placed above the sub-mount substrate, a barrier layer which is placed on the Au layer and has a barrier portion at least in a portion of its outer peripheral portion which is other than a portion corresponding to a side of an output end of a semiconductor laser, and a solder layer placed on the barrier layer in an area surrounded by the barrier portion, wherein the semiconductor laser is bonded to the sub-mount through the solder layer, in a state where the semiconductor laser is spaced apart by a predetermined interval from an inner surface of the barrier portion, and further, the output end protrudes, in a direction of output of the laser light, from an end of the solder layer which corresponds to the side of the output end of the semiconductor laser.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: September 20, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shuhei Yamamoto, Akira Nakamura, Kazutaka Ikeda
  • Patent number: 9416208
    Abstract: Provided are a method for producing an EVOH resin having sufficient long-run workability in melt molding and enabling prevention of coloring such as yellowing, an EVOH resin obtained by this method for production, and a laminate obtained from this resin. Additionally, a method for producing an ethylene-vinyl alcohol copolymer resin capable of efficiently drying while inhibiting deterioration of qualities is provided. The method for producing an ethylene-vinyl alcohol copolymer resin of the present invention includes a step of irradiation with an infrared ray for irradiating with an infrared ray an ethylene-vinyl alcohol copolymer or an ethylene-vinyl ester copolymer that is a precursor of the ethylene-vinyl alcohol copolymer.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: August 16, 2016
    Assignee: Kuraray Co., Ltd.
    Inventors: Kenji Nakano, Kazutaka Ikeda
  • Patent number: 9238853
    Abstract: A Ni-base casting superalloy containing, in masse, C: 0.05 to 0.2, Si: 0.01 to 1, Mn: 0.01 to 1, Co: 5 to 20, Fe: 10 or less, Cr: 15 to 25, and one kind or two kinds or more of Mo, W, and Re, with Mo+(W+Re)/2: 8 to 25, the balance being Ni and unavoidable impurities.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: January 19, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masayuki Yamada, Kiyoshi Imai, Kuniyoshi Nemoto, Shigekazu Miyashita, Kazutaka Ikeda, Takeo Suga
  • Publication number: 20150263487
    Abstract: A sub-mount includes a sub-mount substrate, an Au layer placed above the sub-mount substrate, a barrier layer which is placed on the Au layer and has a barrier portion at least in a portion of its outer peripheral portion which is other than a portion corresponding to a side of an output end of a semiconductor laser, and a solder layer placed on the barrier layer in an area surrounded by the barrier portion, wherein the semiconductor laser is bonded to the sub-mount through the solder layer, in a state where the semiconductor laser is spaced apart by a predetermined interval from an inner surface of the barrier portion, and further, the output end protrudes, in a direction of output of the laser light, from an end of the solder layer which corresponds to the side of the output end of the semiconductor laser.
    Type: Application
    Filed: November 21, 2014
    Publication date: September 17, 2015
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Shuhei YAMAMOTO, Akira NAKAMURA, Kazutaka IKEDA
  • Patent number: 8979480
    Abstract: A plurality of blades are studded in a rotor disc integrated with the rotor along the circumferential direction of the rotor, a plurality of vanes are attached to a casing covering the rotor along the circumferential direction of the rotor, and an internal diaphragm disposed on rotor-side surfaces of the vanes in such a way that the internal diaphragm faces the rotor disc. The vanes and the blades adjacent to each other in the axial direction of the rotor form a turbine stage. A rotor-side cooling path is formed through the rotor disc in the axial direction of the rotor, and a diaphragm-side cooling path is formed through the internal diaphragm in the axial direction of the rotor, and a cooling medium flowing through the rotor-side cooling path diverts into the diaphragm-side cooling path and a labyrinth flow path provided between the internal diaphragm and the rotor.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: March 17, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Asako Inomata, Katsuya Yamashita, Kazuhiro Saito, Takao Inukai, Kazutaka Ikeda
  • Patent number: 8858158
    Abstract: A steam turbine 10 is comprised of a double-structured casing configured of an outer casing 21 and an inner casing 20, a turbine rotor 23 disposed through the inner casing and having a plurality of stages of moving blades 22 implanted, and a plurality of stages of stationary blades 25 disposed alternately with the moving blades 22 in the axial direction of the turbine rotor 23 in the inner casing 20. The steam turbine 10 is further provided with a discharge passage 30 which externally guides steam, which has flown in the inner casing and passed the final stage moving blades while performing expansion work, directly from the inner casing interior.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: October 14, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazutaka Ikeda, Katsuya Yamashita, Takao Inukai, Kazuhiro Saito, Kouichi Kitaguchi, Shogo Iwai, Shigekazu Miyashita
  • Patent number: 8840362
    Abstract: According to an embodiment, at least one first outer ring has an annular outer ring cavity to which external cooling steam is supplied. A radial direction cooling hole connecting with the outer ring cavity is formed in the stator blades connected to the first outer ring. An annular inner ring cavity connecting with the radial direction cooling hole is formed in a first inner ring constituting one diaphragm together with the first outer ring. Cooling steam blowing holes connecting an annular wheel space and the inner ring cavity are formed. The annular wheel space is formed between the first inner ring and a rotor wheel adjacent to the first inner ring.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: September 23, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Shoko Ito, Iwataro Sato, Kazutaka Ikeda, Asako Inomata