Patents by Inventor Mika Okada

Mika Okada 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: 10787581
    Abstract: Heat ray shielding particles are provided that are composite tungsten oxide particles having a hexagonal crystal structure represented by a general formula LixMyWOz, wherein the element M in the general formula is one or more kinds of elements selected from alkaline earth metals and alkali metals other than lithium, 0.25?x?0.80, 0.10?y?0.50, and 2.20?z?3.00.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: September 29, 2020
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Keisuke Machida, Mika Okada, Kenichi Fujita
  • Publication number: 20200224043
    Abstract: A near-infrared curable ink composition on a predetermined substrate that has excellent adhesion to the substrate when irradiated with near-infrared rays and cured, a near-infrared curable film obtained from the near-infrared curable ink composition, and stereolithography using the near-infrared curable ink composition, and contains composite tungsten oxide fine particles as near-infrared absorbing fine particles and uncured thermosetting resin, wherein the composite tungsten oxide fine particles have a XRD peak top intensity ratio value of 0.13 or more based on a XRD peak intensity ratio value of 1 on plane (220) of a silicon powder standard sample (640c produced by NIST).
    Type: Application
    Filed: June 19, 2018
    Publication date: July 16, 2020
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mika OKADA, Takeshi CHONAN, Hirofumi TSUNEMATSU
  • Publication number: 20200198984
    Abstract: Electromagnetic wave absorbing particles are provided that include hexagonal tungsten bronze having oxygen deficiency, wherein the tungsten bronze is expressed by a general formula: MxWO3-y (where one or more elements M include at least one or more species selected from among K, Rb, and Cs, 0.15?x?0.33, and 0<y?0.46), and wherein oxygen vacancy concentration NV in the electromagnetic wave absorbing particles is greater than or equal to 4.3×1014 cm?3 and less than or equal to 8.0×1021 cm?3.
    Type: Application
    Filed: July 25, 2018
    Publication date: June 25, 2020
    Inventors: Mika OKADA, Katsushi ONO, Satoshi YOSHIO, Kenji ADACHI, Keisuke MACHIDA
  • Publication number: 20200172752
    Abstract: There is provided an anti-counterfeit ink composition, an anti-counterfeit ink, and an anti-counterfeit printed matter that transmits a visible light region, having absorption in an infrared region, and capable of judging authenticity of a printed matter, and containing composite tungsten oxide fine particles, the composite tungsten oxide fine particles having a hexagonal crystal structure, having a lattice constant such that a-axis is 7.3850 ? or more and 7.4186 ? or less, and c-axis is 7.5600 ? or more and 7.6240 ? or less, and having a particle size of the near-infrared absorbing material fine particles is 100 nm or less, and a method for producing the anti-counterfeit ink composition, the anti-counterfeit ink, the anti-counterfeit printed matter, and the anti-counterfeit ink composition.
    Type: Application
    Filed: June 19, 2018
    Publication date: June 4, 2020
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mika OKADA, Hirofumi TSUNEMATSU, Takeshi CHONAN
  • Publication number: 20200170150
    Abstract: An electromagnetic wave absorbing particle dispersoid is provided that includes at least electromagnetic wave absorbing particles and a thermoplastic resin, wherein the electromagnetic wave absorbing particles contain hexagonal tungsten bronze having oxygen deficiency, wherein the tungsten bronze is expressed by a general formula: MxWO3-y (where one or more elements M include at least one or more species selected from among K, Rb, and Cs, 0.15?x?0.33, and 0<y?0.46), and wherein oxygen vacancy concentration NV in the electromagnetic wave absorbing particles is greater than or equal to 4.3×1014 cm?3 and less than or equal to 8.0×1021 cm?3.
    Type: Application
    Filed: July 25, 2018
    Publication date: May 28, 2020
    Inventors: Mika OKADA, Katsushi ONO, Satoshi YOSHIO, Kenji ADACHl, Keisuke MACHIDA
  • Publication number: 20200115570
    Abstract: Provided are a near infrared absorbing fine particle dispersion liquid having an absorption ability in a near infrared region, a clear contrast, and applicable to offset printing, and a method for producing the same, an anti-counterfeit ink composition using the near infrared absorbing fine particle dispersion liquid and an anti-counterfeit printed matter using near infrared absorbing fine particles. Also provided are a near infrared absorbing fine particle dispersion liquid containing a solvent of one or more kinds selected from vegetable oils or vegetable oil-derived compounds; near infrared absorbing fine particles in an amount of 2 mass % or more and 25 mass % or less, selected from one or more kinds of hexaboride fine particles expressed by a general formula XBa (wherein element X is at least one or more kinds selected from a group consisting of La, Ce, Pr, Nd, Gd, Tb, Dy, Ho, Y, Sm, Eu, Er, Tm, Yb, Lu, Sr, and Ca, satisfying 4.0?a?6.
    Type: Application
    Filed: December 10, 2019
    Publication date: April 16, 2020
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mika OKADA, Hideaki FUKUYAMA
  • Patent number: 10604665
    Abstract: Provided are a near infrared absorbing fine particle dispersion liquid having an absorption ability in a near infrared region, a clear contrast, and applicable to offset printing, and a method for producing the same, an anti-counterfeit ink composition using the near infrared absorbing fine particle dispersion liquid and an anti-counterfeit printed matter using near infrared absorbing fine particles. Also provided are a near infrared absorbing fine particle dispersion liquid containing a solvent of one or more kinds selected from vegetable oils or vegetable oil-derived compounds; near infrared absorbing fine particles in an amount of 2 mass % or more and 25 mass % or less, selected from one or more kinds of hexaboride fine particles expressed by a general formula XBa (wherein element X is at least one or more kinds selected from a group consisting of La, Ce, Pr, Nd, Gd, Tb, Dy, Ho, Y, Sm, Eu, Er, Tm, Yb, Lu, Sr, and Ca, satisfying 4.0?a?6.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: March 31, 2020
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mika Okada, Hideaki Fukuyama
  • Publication number: 20200062974
    Abstract: A near infrared absorbing-fine-particle dispersion liquid having absorption in a near infrared region, having clear contrast, and being applicable to offset printing; a method for producing the same; an anti-counterfeit ink composition using the near infrared absorbing-fine-particle dispersion liquid; and anti-counterfeit printed matter using the near infrared absorbing-fine-particles. The near infrared absorbing-fine-particle dispersion liquid contains a solvent of one or more from vegetable oils or vegetable oil-derived compounds; near infrared absorbing-fine-particles of 2 mass % or more and 25 mass % or less, selected from one or more of hexaboride fine-particles expressed by formula XBa (where X is one or more kinds of specified elements, and 4.0?a?6.2); and a dispersant soluble in solvent and having a fatty acid in its structure, where the viscosity is 180 mPa·s or less. The anti-counterfeit printed matter is excellent in anti-counterfeit effect due to the near infrared ab sorbing-fine-particles.
    Type: Application
    Filed: October 24, 2019
    Publication date: February 27, 2020
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mika OKADA, Hideaki FUKUYAMA
  • Publication number: 20200057294
    Abstract: A cell area extraction unit (241) extracts a cell area in a phase image that is created based on a hologram obtained by in-line holographic microscope (IHM). A background value acquisition unit (242) obtains a background value from phase values at a plurality of positions outside the cell area. An intracellular phase value acquisition unit (243) averages a plurality of phase values on a sampling line set at a position close to the periphery of a cell, while avoiding a central portion in which the phase value may be lowered in the cell area, to obtain an intracellular phase value. A phase change amount calculation unit (244) obtains the difference between the intracellular phase value and the background value. A phase change amount determination unit (245) compares the value of the difference with thresholds in two levels to determine whether the cell is in an undifferentiated state or an undifferentiation deviant state.
    Type: Application
    Filed: March 2, 2017
    Publication date: February 20, 2020
    Applicants: SHIMADZU CORPORATION, iPS PORTAL, Inc.
    Inventors: Yasushi KONDO, Shuhei YAMAMOTO, Mika OKADA, Minoru OKADA
  • Patent number: 10442948
    Abstract: Provided is a near infrared absorbing fine particle dispersion liquid, which can be applied to offset printing, including: a solvent of one or more kinds selected from vegetable oils and vegetable oil-derived compounds; near infrared absorbing fine particles of one or more kinds selected from 10 mass % more and 25 mass % or less of a composite tungsten oxide expressed by MxWyOz, and/or a tungsten oxide having a Magneli phase expressed by a general formula WyOz; and a dispersant soluble in the solvent and having a fatty acid in its structure, wherein a viscosity is 180 mPa/S or less.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: October 15, 2019
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mika Okada, Hideaki Fukuyama
  • Publication number: 20190263170
    Abstract: Provided are a near infrared absorbing fine particle dispersion liquid having an absorption ability in a near infrared region, a clear contrast, and applicable to offset printing, and a method for producing the same, an anti-counterfeit ink composition using the near infrared absorbing fine particle dispersion liquid and an anti-counterfeit printed matter using near infrared absorbing fine particles. Also provided are a near infrared absorbing fine particle dispersion liquid containing a solvent of one or more kinds selected from petroleum-based solvents; near infrared absorbing fine particles in an amount of 2 mass % or more and 25 mass % or less, selected from one or more kinds of hexaboride fine particles expressed by a general formula XBa, and a dispersant soluble in the solvent and having a fatty acid in its structure, and an anti-counterfeit ink composition containing the near infrared absorbing fine particle dispersion liquid.
    Type: Application
    Filed: April 25, 2019
    Publication date: August 29, 2019
    Applicant: SUMITOMO METAL MINING CO.,LTD.
    Inventors: Mika OKADA, Hideaki FUKUYAMA
  • Patent number: 10370552
    Abstract: Provided is a near infrared absorbing fine particle dispersion liquid, which can be applied to a base material such as an acrylic resin base material having a low solvent resistance, including: a solvent of one or more kinds selected from petroleum-based solvents; near infrared absorbing fine particles of one or more kinds selected from 10 mass % more and 25 mass % or less of a composite tungsten oxide expressed by MxWyOz, and/or a magneli phase expressed by the general formula WyOz; and a dispersant having a fatty acid in its structure and soluble in the solvent, wherein a viscosity is 180 mPa/S or less.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: August 6, 2019
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mika Okada, Hideaki Fukuyama
  • Publication number: 20190225503
    Abstract: Heat ray shielding fine particles, heat ray shielding fine particle dispersion liquid, heat ray shielding film, heat ray shielding glass, heat ray shielding dispersion body, and heat ray shielding laminated transparent substrate that exhibit heat ray shielding properties and suppress scorching sensation on skin when employed in window materials and the like, also enable usage of communication devices, imaging devices, sensors, etc. that employ near-infrared light across these structures. The particles are composite tungsten oxide fine particles having a heat ray shielding function; and when a visible light transmittance is 85% when computed for light absorption by the particles alone, the average value of transmittance in the wavelength region from 800 nm to 900 nm is 30%-60%, and the average value of transmittance in the wavelength region from 1200 nm to 1500 nm is 20% or lower, and the transmittance at a wavelength of 2100 nm is 22% or lower.
    Type: Application
    Filed: December 2, 2016
    Publication date: July 25, 2019
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mika OKADA, Kenji ADACHI
  • Publication number: 20190185340
    Abstract: A heat ray shielding fine particle dispersion body and a heat ray shielding laminated transparent substrate that as well as exhibit heat ray shielding properties and suppressing a scorching sensation on the skin when used in structures such as window materials and the like, also enable usage of communication devices, imaging devices, sensors and the like that use near-infrared light interposing the heat ray shielding film or the heat ray shielding glass, containing a transparent thermoplastic resin, and wherein heat ray shielding fine particles are dispersed in the transparent thermoplastic resin, the heat ray shielding fine particles having elements L, M, tungsten, and oxygen, and a hexagonal crystal structure represented by a general formula (LAMB) WCOD, wherein the element L is an element selected from K, Rb, Cs, and the element M is one or more elements selected from K, Rb, and Cs and is different from the element L.
    Type: Application
    Filed: June 14, 2017
    Publication date: June 20, 2019
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mika OKADA, Hideaki FUKUYAMA, Takeshi CHONAN
  • Patent number: 10308823
    Abstract: A near infrared absorbing fine particle dispersion liquid, which can be applied to offset printing, including: a solvent of one or more kinds selected from vegetable oils and vegetable oil-derived compounds; near infrared ray-absorbing fine particles of one or more kinds selected from composite tungsten oxide expressed by MxWyOz or tungsten oxide having a Magneli phase expressed by a general formula WyOz; a solvent of one or more kinds selected from alcohols, ethers, esters, ketones, aromatic hydrocarbons and glycol ethers and having a boiling point of 180° C. or less, wherein a content of the solvent of one or more kinds selected from alcohols, ethers, esters, ketones, aromatic hydrocarbons and glycol ethers is 5 mass % or less.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: June 4, 2019
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mika Okada, Hideaki Fukuyama
  • Patent number: 10105929
    Abstract: A foamed sheet according to the present invention has a thickness of 30 to 500 ?m and includes a foam. The foam has a density of 0.2 to 0.7 g/cm3, an average cell diameter of 10 to 150 ?m, and a peak top of loss tangent (tan ?) occurring in a temperature range of from ?30° C. to 30° C., where the loss tangent is defined as the ratio of a loss modulus to a storage modulus determined at an angular frequency of 1 rad/s in dynamic viscoelastic measurement of the foam. The foam preferably has a maximum of the loss tangent (tan ?) in the temperature range of from ?30° C. to 30° C. of 0.2 or more.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: October 23, 2018
    Assignee: NITTO DENKO CORPORATION
    Inventors: Kohei Doi, Kunio Nagasaki, Tetsuya Otsuka, Mika Okada, Kazumichi Kato, Hideyuki Tokuyama, Tsunaki Kitahara, Tadao Takahashi, Kiichiro Matsushita
  • Publication number: 20180208803
    Abstract: An adhesive layer is provided including composite tungsten oxide particles and/or tungsten oxide particles; a dispersant; a metal coupling agent including an amino group; an adhesive agent; and a cross-linking agent.
    Type: Application
    Filed: October 27, 2016
    Publication date: July 26, 2018
    Inventors: Mika OKADA, Hideaki FUKUYAMA, Kenji FUKUDA
  • Publication number: 20180022945
    Abstract: Provided are a near infrared absorbing fine particle dispersion liquid having an absorption ability in a near infrared region, a clear contrast, and applicable to offset printing, and a method for producing the same, an anti-counterfeit ink composition using the near infrared absorbing fine particle dispersion liquid and an anti-counterfeit printed matter using near infrared absorbing fine particles. Also provided are a near infrared absorbing fine particle dispersion liquid containing a solvent of one or more kinds selected from vegetable oils or vegetable oil-derived compounds; near infrared absorbing fine particles in an amount of 2 mass % or more and 25 mass % or less, selected from one or more kinds of hexaboride fine particles expressed by a general formula XBa (wherein element X is at least one or more kinds selected from a group consisting of La, Ce, Pr, Nd, Gd, Tb, Dy, Ho, Y, Sm, Eu, Er, Tm, Yb, Lu, Sr, and Ca, satisfying 4.0?a?6.
    Type: Application
    Filed: January 27, 2016
    Publication date: January 25, 2018
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mika OKADA, Hideaki FUKUYAMA
  • Publication number: 20180016460
    Abstract: Provided is a near infrared absorbing fine particle dispersion liquid, which can be applied to a base material such as an acrylic resin base material having a low solvent resistance, including: a solvent of one or more kinds selected from petroleum-based solvents; near infrared absorbing fine particles of one or more kinds selected from 10 mass % more and 25 mass % or less of a composite tungsten oxide expressed by MxWyOz, and/or a magneli phase expressed by the general formula WyOz; and a dispersant having a fatty acid in its structure and soluble in the solvent, wherein a viscosity is 180 mPa/S or less.
    Type: Application
    Filed: January 27, 2016
    Publication date: January 18, 2018
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mika OKADA, Hideaki FUKUYAMA
  • Publication number: 20180016451
    Abstract: A near infrared absorbing fine particle dispersion liquid, which can be applied to offset printing, including: a solvent of one or more kinds selected from vegetable oils and vegetable oil-derived compounds; near infrared ray-absorbing fine particles of one or more kinds selected from composite tungsten oxide expressed by MxWyOz or tungsten oxide having a Magneli phase expressed by a general formula WyOz; a solvent of one or more kinds selected from alcohols, ethers, esters, ketones, aromatic hydrocarbons and glycol ethers and having a boiling point of 180° C. or less, wherein a content of the solvent of one or more kinds selected from alcohols, ethers, esters, ketones, aromatic hydrocarbons and glycol ethers is 5 mass % or less.
    Type: Application
    Filed: January 27, 2016
    Publication date: January 18, 2018
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mika OKADA, Hideaki FUKUYAMA