Patents by Inventor Makoto Izumi

Makoto Izumi 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: 10483441
    Abstract: A phosphor containing particle including a core portion which is a particulate matter of resin including a constitutional unit derived from an ionic liquid with a semiconductor nanoparticle phosphor dispersed therein and a shell portion which is a matter in a form of a layer of resin which includes a constitutional unit derived from an ionic liquid and coats at least a portion of the core portion, and a phosphor containing particle including a particulate matter of resin including a constitutional unit derived from an ionic liquid with a semiconductor nanoparticle phosphor dispersed therein and a metal oxide layer coating at least a portion of the particulate matter of resin. A light emitting device including a light source and a wavelength converter in which phosphor containing particles are dispersed in a translucent medium, and a phosphor containing sheet in which phosphor containing particles are dispersed in a sheet-shaped translucent medium.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: November 19, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tatsuya Ryohwa, Kanako Nakata, Hiroshi Fukunaga, Makoto Izumi
  • Patent number: 10468563
    Abstract: A light-emitting device includes a light-emitting element that emits blue light, a Mn2+-activated ?-AlON phosphor and a Eu2+-activated ?-SiAlON phosphor that are excited by the blue light to emit green light, and a red phosphor that is excited by the blue light to emit red light. The weight ratio of the Mn2+-activated ?-AlON phosphor to the Eu2+-activated ?-SiAlON phosphor is from 20 to 75.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: November 5, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kenichi Yoshimura, Makoto Izumi, Hiroshi Fukunaga
  • Patent number: 10449510
    Abstract: An adsorbent is provided to adsorb ruthenium from aqueous solution for recovery and/or reuse or removal of said ruthenium, and a method for purifying, for example, sea water and/or water containing sodium ions, magnesium ions, calcium ions, chlorine ions or other ions, polluted with a radioactive element, using said adsorbent. The ruthenium adsorbent includes manganese in the form of oxides thereof. The adsorbent can further include at least one additional transition metal element other than manganese, such as copper. The adsorbent soaked in water removes radioactive ruthenium or the like through adsorption, and thereby can purify, for example, sea water and/or water containing sodium ions, magnesium ions, calcium ions, chlorine ions or other ions.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: October 22, 2019
    Assignees: Clariant Catalysts (Japan) K.K., Ebara Corporation
    Inventors: Tadahito Nakashima, Hyun-Joong Kim, Takashi Sakuma, Makoto Komatsu, Takeshi Izumi
  • Publication number: 20190299354
    Abstract: A wafer edge polishing apparatus includes a cleaning mechanism exhibiting a superb effect of cleaning slurry residue adhered on a chuck table. This edge polishing device is provided with: a chuck table which sucks/holds a wafer; a rotation drive mechanism which rotates the chuck table; an edge polishing unit which polishes an edge of the wafer while supplying slurry to the wafer, which is rotating while being sucked/held by the chuck table; and a cleaning unit which removes slurry residue on the chuck table. The cleaning unit includes a cleaning head, and cleans the chuck table through high-pressure cleaning and brush-cleaning by using the cleaning head, wherein the cleaning head is provided with a high-pressure jet nozzle and a brush surrounding the periphery of the high-pressure jet nozzle.
    Type: Application
    Filed: October 2, 2017
    Publication date: October 3, 2019
    Applicant: SUMCO Corporation
    Inventors: Makoto ANDO, Tatsunori IZUMI, Ryuichi TANIMOTO, Yuhei MATSUNAGA, Yasuo YAMADA
  • Patent number: 10409269
    Abstract: Provided is an operation command generation device, which is configured to generate an operation command, which is a collection of jobs to be performed by a process system of at least a robot, based on a protocol chart of at least a plurality of process symbols, the operation command generation device circuitry includes: a job generation unit configured to generate, based on the protocol chart, a job; a priority instruction unit configured to instruct a priority condition for determining a job execution order; and an execution order determination unit configured to determine an execution order of the jobs based on the priority instructed by the priority instruction unit by using a first condition about repeatedly execution of the jobs according to the number of the containers and a second condition about execution order of the jobs according to the arrangement of the process symbols in the protocol chart.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: September 10, 2019
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Tetsuro Izumi, Hirokazu Kariyazaki, Makoto Umeno, Tatsuro Ipposhi
  • Patent number: 10400162
    Abstract: A phosphor containing particle includes a semiconductor nanoparticle phosphor and a matrix including a constitutional unit derived from an ionic liquid, the semiconductor nanoparticle phosphor being dispersed in the matrix. A light emitting device comprises a light source and a wavelength converter in which the phosphor containing particle of the present invention is dispersed in a translucent medium. A phosphor containing sheet in which the phosphor containing particle of the present invention is dispersed in a sheet-like translucent medium.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: September 3, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yasutaka Kuzumoto, Tatsuya Ryohwa, Mami Morishita, Noriyuki Yamazumi, Makoto Izumi
  • Patent number: 10388419
    Abstract: Provided are an adsorbent capable of removing radioactive water liquid including iodine compounds and/or antimony by means of a water passing treatment, and a method and an apparatus for treating radioactive waste liquid by using the adsorbent. The adsorbent includes a polymer resin and 10 parts by weight or more of a hydrous hydroxide of a rare earth element based on 100 parts by weight of the polymer resin, in which the hydrous hydroxide of the rare earth element has a water content of 1 part by weight to 30 parts by weight based on 100 parts by weight of a dry product thereof, and adsorbs iodine compounds and/or antimony.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: August 20, 2019
    Assignees: EBARA CORPORATION, NIHON KAISU CO., LTD.
    Inventors: Takashi Sakuma, Makoto Komatsu, Takeshi Izumi, Tomohiko Ito, Toru Shibuya
  • Patent number: 10381528
    Abstract: The present invention provides a light emitting device that makes it possible to provide an image display apparatus having a wide color reproduction range. The light emitting device includes a light emitting element that emits blue light; a Mn2+-activated ?-AlON phosphor that is a green phosphor; and a Mn4+-activated phosphor that is a red phosphor. The green light emitted by the Mn2+-activated ?-AlON phosphor has an emission-spectrum peak wavelength of not less than 518 nm and not more than 528 nm.
    Type: Grant
    Filed: August 15, 2016
    Date of Patent: August 13, 2019
    Assignees: SHARP KABUSHIKI KAISHA, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Kenichi Yoshimura, Shigetoshi Ito, Makoto Izumi, Masamichi Harada, Hiroshi Fukunaga, Naoto Hirosaki
  • Patent number: 10381529
    Abstract: A light-emitting device includes a light-emitting element that emits blue light, a Mn2+-activated ?-AlON green phosphor, and a dispersing material in which the green phosphor is dispersed. The green phosphor has an in-crystal Mn concentration of 2.5 wt % or more. The shortest path of the blue light through the dispersing material is 1 mm long or shorter.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: August 13, 2019
    Assignees: SHARP KABUSHIKI KAISHA, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Kenichi Yoshimura, Makoto Izumi, Hiroshi Fukunaga, Naoto Hirosaki
  • Patent number: 10361642
    Abstract: Provided is an electronic device including a rotary power generation device using an electret, which is capable of preventing a spiral spring from being wound up or fully extended. The electronic device includes a power generation mechanism including: first rotary member, which is supported in a freely rotatable manner, and has a center of gravity shifted from a rotation center; second rotary member supported in a freely rotatable manner; an elastic member configured to elastically connect the first rotary member and the second rotary member to each other for rotary motions thereof; a stationary member arranged so as to be opposed to the second rotary member; and an electret film formed on a surface of any one of the second rotary member and the stationary member.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: July 23, 2019
    Assignees: CITIZEN HOLDINGS CO., LTD., CITIZEN WATCH CO., LTD.
    Inventors: Kensaku Matsumoto, Takashi Ihara, Makoto Watanabe, Akira Izumi
  • Patent number: 10348219
    Abstract: A board arrangement structure includes a housing, a first board fastened to the housing, a second board arranged in parallel enabling, relative movement with respect to the first board, an electrically charged film, a counter electrode, and an output part outputting electric power generated between the electrically charged film and the counter electrode, at least one of the electrically charged film and the counter electrode being arranged at a first facing surface of the first board and the other being arranged at a second facing surface of the second board facing the first facing surface, and the first facing surface of the first board being, fastened to a reference mounting surface provided at the housing.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: July 9, 2019
    Assignee: CITIZEN WATCH CO., LTD.
    Inventors: Akira Izumi, Takashi Ihara, Makoto Watanabe
  • Patent number: 10295943
    Abstract: Type and moisture content of a sheet of paper are determined with high accuracy for controlling an image forming condition, accordingly. A coping machine includes a transmitted-light measuring unit, a reflected-light measuring unit, a type determination unit configured to determine a type of a sheet of paper, a moisture content calculation unit configured to calculate a moisture content of the sheet of paper, based on the type of the sheet of paper determined by the type determination unit and the intensity of the light measured by the reflected-light measuring unit, and an image forming condition setting unit configured to set an image forming condition for the sheet of paper.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: May 21, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yusuke Sakakibara, Kyohko Matsuda, Makoto Izumi
  • Publication number: 20190134599
    Abstract: The present invention provides a composition that includes a silicotitanate that has a sitinakite structure, the composition having higher cesium adsorptivity than conventional compositions. The present invention also provides a production method for the composition that includes a silicotitanate that has a sitinakite structure. The production method does not require the use of hazardous or deleterious materials, can generate a product using a compound that is easily acquired, and can use a general-purpose autoclave. Also provided is a silicotitanate composition that has higher strontium adsorptivity than the present invention. Provided is a silicotitanate composition that contains niobium and a silicotitanate that has a sitinakite structure, the composition having at least two or more diffraction peaks selected from the group consisting of 2?=8.8°±0.5°, 2?=10.0°±0.5°, and 2?=29.6°±0.5°.
    Type: Application
    Filed: January 3, 2019
    Publication date: May 9, 2019
    Applicants: TOSOH CORPORATION, EBARA CORPORATION
    Inventors: Yoju SHIMIZU, Hajime FUNAKOSHI, Keisuke TOKUNAGA, Shigeru HIRANO, Takashi SAKUMA, Makoto KOMATSU, Takeshi IZUMI
  • Publication number: 20190140148
    Abstract: A light-emitting device includes a light-emitting element that emits blue light, a Mn2+-activated ?-AlON phosphor and a Eu2+-activated ?-SiAlON phosphor that are excited by the blue light to emit green light, and a red phosphor that is excited by the blue light to emit red light. The weight ratio of the Mn2+-activated ?-AlON phosphor to the Eu2+-activated ?-SiAlON phosphor is from 20 to 75.
    Type: Application
    Filed: July 2, 2018
    Publication date: May 9, 2019
    Inventors: Kenichi YOSHIMURA, Makoto IZUMI, Hiroshi FUKUNAGA
  • Patent number: 10263162
    Abstract: A light emitting device includes a light emitting element disposed on a substrate which emits blue light, a green phosphor that emits green light upon being excited by the blue light, a red phosphor that emits red light upon being excited by the blue light, and a transparent resin including the green phosphor and the red phosphor dispersed therein. The red phosphor is arranged to be in contact with the light emitting element and the substrate. The transparent resin includes a constitutional unit including an ionic liquid including a polymerizable functional group or a derivative of the ionic liquid.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: April 16, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kenichi Yoshimura, Tatsuya Ryohwa, Makoto Izumi, Noriyuki Yamazumi
  • Patent number: 10256377
    Abstract: A light-emitting device includes a light-emitting element configured to emit excitation light, and a phosphor layer in which phosphor particles are dispersed so as to emit fluorescence in response to the excitation light. The phosphor layer includes a constitutional unit derived from an ionic liquid having a polymerizable functional group. The light-emitting device further includes a protective layer that seals the light-emitting element therein.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: April 9, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Noriyuki Yamazumi, Tatsuya Ryohwa, Kenichi Yoshimura, Hiroshi Fukunaga, Kanako Nakata, Makoto Izumi
  • Patent number: 10181539
    Abstract: A photoelectric conversion element includes a buffer layer, a BSF layer, a base layer, a photoelectric conversion layer, an emitter layer, a window layer, a contact layer, and a p-type electrode sequentially on one surface of a substrate, and includes an n-type electrode on the other surface of the substrate. The photoelectric conversion layer has at least one quantum dot layer. The at least one quantum dot layer includes a quantum dot and a barrier layer. A photoelectric conversion member including the buffer layer, the BSF layer, the base layer, the photoelectric conversion layer, the emitter layer, the window layer, and the contact layer has an edge of incidence that receives light in an oblique direction relative to the growth direction of the quantum dot. A concentrator concentrates sunlight and causes the concentrated sunlight to enter the photoelectric conversion member from the edge of incidence.
    Type: Grant
    Filed: June 26, 2017
    Date of Patent: January 15, 2019
    Assignees: SHARP KABUSHIKI KAISHA, THE UNIVERSITY OF TOKYO
    Inventors: Hirofumi Yoshikawa, Makoto Izumi, Yasuhiko Arakawa, Takeo Kageyama
  • Patent number: 10174886
    Abstract: A light emitting device includes a light source and a wavelength converter that includes a resin including a constitutional unit that includes an ionic liquid or a derivative of the ionic liquid, and a semiconductor nanoparticle phosphor included in the resin and provided on at least a portion of the light source. A wavelength converter includes a resin including a constitutional unit that includes an ionic liquid or a derivative of the ionic liquid, and a semiconductor nanoparticle phosphor included in the resin and emitting fluorescence upon receiving excitation light. A light emitting device includes the wavelength converter and a light source emitting excitation light to the wavelength converter, which is provided separately from the wavelength converter.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: January 8, 2019
    Assignees: SHARP KABUSHIKI KAISHA, NATIONAL UNIVERSITY CORPORATION NARA INSTITUTE AND TECHNOLOGY
    Inventors: Tatsuya Ryohwa, Mami Morishita, Noriyuki Yamazumi, Makoto Izumi, Yasutaka Kuzumoto, Takuya Nakashima, Tsuyoshi Kawai
  • Publication number: 20180358517
    Abstract: A phosphor containing particle including a core portion which is a particulate matter of resin including a constitutional unit derived from an ionic liquid with a semiconductor nanoparticle phosphor dispersed therein and a shell portion which is a matter in a form of a layer of resin which includes a constitutional unit derived from an ionic liquid and coats at least a portion of the core portion, and a phosphor containing particle including a particulate matter of resin including a constitutional unit derived from an ionic liquid with a semiconductor nanoparticle phosphor dispersed therein and a metal oxide layer coating at least a portion of the particulate matter of resin. A light emitting device including a light source and a wavelength converter in which phosphor containing particles are dispersed in a translucent medium, and a phosphor containing sheet in which phosphor containing particles are dispersed in a sheet-shaped translucent medium.
    Type: Application
    Filed: May 17, 2018
    Publication date: December 13, 2018
    Inventors: Tatsuya RYOHWA, Kanako NAKATA, Hiroshi FUKUNAGA, Makoto IZUMI
  • Publication number: 20180331240
    Abstract: A quantum dot infrared detector includes a photoelectric conversion layer. The photoelectric conversion layer includes a quantum dot stacked structure in which quantum dot layers are stacked, each quantum dot layer including at least quantum dots, a underlayer for the quantum dots, and a partial cap layer at least partially covering the quantum dots. The underlayer is AlxGa1-xAs (0?x<1), and the partial cap layer is AlyGa1-yAs (0?y<1). When the lower of x and y is represented by z and a size of the quantum dots in a direction perpendicular to a stacking direction of the quantum dot stacked structure is represented by R (nm), z satisfies z?0.14×R?1.6, and the size of the quantum dots in the stacking direction is less than or equal to 0.5R.
    Type: Application
    Filed: May 10, 2018
    Publication date: November 15, 2018
    Inventors: HIROFUMI YOSHIKAWA, Makoto Izumi, TAZUKO KITAZAWA, TERUHISA KOTANI, YASUHIKO ARAKAWA