Patents by Inventor Takeshi Chonan

Takeshi Chonan 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: 11912054
    Abstract: An LTHC layer having the visible light transmission property, having sufficient infrared absorption property, capable of improving transfer accuracy of the organic electroluminescence device by irradiation with a laser beam, and further enabling application in a wide variety of fields including electronics, medicine, agriculture, machine, etc. A donor sheet using the LTHC layer including infrared absorbing particles and a binder component, wherein the infrared absorbing particles are composite tungsten oxide fine particles including a hexagonal crystal structure, a lattice constant of the composite tungsten oxide fine particles is such that the a-axis is 7.3850 ? or more and 7.4186 ? or less, and the c-axis is 7.5600 ? or more and 7.6240 ? or less, and a particle size of the composite tungsten oxide fine particles is 100 nm or less, and the solar radiation transmittance is 45% or less.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: February 27, 2024
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hirofumi Tsunematsu, Takeshi Chonan
  • Patent number: 11912878
    Abstract: A method of producing organic-inorganic hybrid infrared absorbing particles includes a dispersion liquid preparing step of preparing a dispersion liquid containing infrared absorbing particles, a dispersant, and a dispersion medium; a dispersion medium removing step of removing the dispersion medium from the dispersion liquid by an evaporation; a raw material mixture liquid preparing step of preparing a raw material mixture liquid containing the infrared absorbing particles collected after the dispersion medium removing step, a coating resin material, an organic solvent, an emulsifying agent, water, and a polymerization initiator; a stirring step of stirring the raw material mixture liquid while cooling; and a polymerizing step of polymerizing the coating resin material after deoxygenation treatment which reduces an amount of oxygen in the raw material mixture liquid.
    Type: Grant
    Filed: December 16, 2019
    Date of Patent: February 27, 2024
    Assignees: SUMITOMO METAL MINING CO., LTD., NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITY
    Inventors: Hirofumi Tsunematsu, Takeshi Chonan, Atsushi Tofuku, Seigou Kawaguchi, Naohiro Kobayashi
  • Patent number: 11895952
    Abstract: An agricultural and horticultural film that does not raise a temperature of an atmosphere such as a greenhouse by using the agricultural and horticultural film in the greenhouse, etc., while absorbing infrared rays from the sunlight and warming the soil, the film having an infrared absorbing layer containing infrared absorbing material ultrafine particles, wherein the infrared absorbing material ultrafine particles are composite tungsten oxide ultrafine particles, and the composite tungsten oxide ultrafine particles have a XRD peak top intensity ratio value of 0.13 or more based on an XRD peak intensity ratio value of 1 on plane of a silicon powder standard sample (640c produced by NIST).
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: February 13, 2024
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hirofumi Tsunematsu, Takeshi Chonan
  • Publication number: 20240045122
    Abstract: Provided is a heat ray shielding resin sheet material including: near infrared absorbing material particles; and a resin, wherein the near infrared absorbing material particles contain particles of a complex tungsten oxide represented by General Formula: MxWyOz (where an element M is one or more elements selected from H, He, alkali metals, alkaline-earth metals, rare-earth elements, Mg, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Al, Ga, In, Tl, Si, Ge, Sn, Pb, Sb, B, F, P, S, Se, Br, Te, Ti, Nb, V, Mo, Ta, Re, Be, Hf, Os, Bi, and I, 0.001?x/y?1, and 3.0<z/y).
    Type: Application
    Filed: December 20, 2021
    Publication date: February 8, 2024
    Inventors: Akinari NOSHITA, Takeshi CHONAN
  • Publication number: 20240045124
    Abstract: Provided is a laminated structure for solar radiation shielding, including: two laminated plates selected from glass plates and plate-shaped plastics; and an intermediate layer provided between the two laminated plates, wherein one or more members selected from the laminated plates and the intermediate layer contain solar radiation shielding function material particles, and the solar radiation shielding function material particles contain particles of a complex tungsten oxide represented by General Formula: MxWyOz (where an element M is one or more elements selected from H, He, alkali metals, alkaline-earth metals, rare-earth elements, Mg, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Al, Ga, In, Tl, Si, Ge, Sn, Pb, Sb, B, F, P, S, Se, Br, Te, Ti, Nb, V, Mo, Ta, Re, Be, Hf, Os, Bi, and I, 0.001?x/y?1, and 3.0<z/y).
    Type: Application
    Filed: December 20, 2021
    Publication date: February 8, 2024
    Inventors: Mika SAKO, Takeshi CHONAN
  • Patent number: 11884790
    Abstract: A near-infrared shielding ultrafine particle dispersion body, and others, having excellent near-infrared shielding function, low haze value and excellent design, with suppressed change in color tone during outdoor use and blue haze phenomenon, using near-infrared shielding ultrafine particles transparent in visible light range, having excellent near-infrared shielding properties, and produced with high productivity, and a near-infrared shielding ultrafine particle dispersion body in which ultra-fine particles having near-infrared shielding properties are dispersed in solid medium, wherein the ultrafine particles are composite tungsten oxide ultrafine particles represented by general formula MxWyOz, and have XRD peak top intensity ratio value of 0.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: January 30, 2024
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hiroshi Kobayashi, Kennichi Fujita, Hirofumi Tsunematsu, Takeshi Chonan
  • Publication number: 20230392025
    Abstract: Surface-treated infrared-absorbing fine particles, including: infrared-absorbing fine particles; and a coating film containing a metal oxide hydrate provided so as to coat surfaces of the infrared-absorbing fine particles, wherein a carbon concentration is 5.0% by mass or less as measured by a combustion-infrared absorption method.
    Type: Application
    Filed: October 20, 2021
    Publication date: December 7, 2023
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hirofumi TSUNEMATSU, Takeshi CHONAN
  • Patent number: 11807766
    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: Grant
    Filed: June 19, 2018
    Date of Patent: November 7, 2023
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mika Okada, Hirofumi Tsunematsu, Takeshi Chonan
  • Patent number: 11787949
    Abstract: An infrared absorbing fine particle dispersed powder, dispersion liquid containing infrared absorbing fine particle dispersed powder, ink containing infrared absorbing fine particle dispersed powder, and anti-counterfeit ink and anti-counterfeit printed matter, which are transparent in a visible light region, have excellent infrared absorption properties, and are also excellent in chemical resistance, and an infrared absorbing fine particle dispersed powder containing particles made of solid media and having an average particle size of 1 ?m or more and having infrared absorbing fine particles dispersed inside.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: October 17, 2023
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hirofumi Tsunematsu, Takeshi Chonan
  • Patent number: 11685839
    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: Grant
    Filed: June 19, 2018
    Date of Patent: June 27, 2023
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mika Okada, Takeshi Chonan, Hirofumi Tsunematsu
  • Patent number: 11577537
    Abstract: A light to heat conversion layer which has visible light permeability, excellent near infrared absorption characteristics, and which can improve the transfer accuracy of an organic electroluminescent element using laser irradiation; and a donor sheet using the light to heat conversion layer. The light to heat conversion layer contains near infrared absorption particles and a binder component. The near infrared absorption particles are composite tungsten oxide microparticles wherein if the value for the XRD peak intensity of the face of a silicon powder standard sample (manufactured by NIST, 640c) is defined as 1, the value for the ratio of XRD peak top intensity is at least 0.13, and the light transmissivity is at least 45%.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: February 14, 2023
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Takeshi Chonan, Hirofumi Tsunematsu
  • Patent number: 11578184
    Abstract: A dispersion body having excellent heat ray shielding properties and long-term high temperature stability, and a dispersion liquid for producing the dispersion body, wherein the dispersion liquid contains liquid medium, absorbing fine particles dispersed in the medium, and a phosphite ester compound, the absorbing fine particles are one or more kinds of oxide fine particles selected from tungsten oxide fine particles represented by a general formula WyOz, and the phosphite ester compound is a phosphite ester compound represented by the following predetermined structural formula, and an addition amount of the phosphite ester compound is more than 500 parts by mass and 50000 parts by mass or less with respect to 100 parts by mass of the absorbing fine particles.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: February 14, 2023
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hirofumi Tsunematsu, Takeshi Chonan, Takahisa Kawano
  • Publication number: 20230022949
    Abstract: Near-infrared absorbing material particles contain composite tungsten oxide particles represented by a general formula MxWyOz, wherein the element M is one or more of elements selected from H, He, an alkali metal, an alkaline earth metal, a rare earth element, Mg, Zr, Cr, Mn, Fe, Ru, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Al, Ga, In, Tl, Si, Ge, Sn, Pb, Sb, B, F, P, S, Se, Br, Te, Ti, Nb, V, Mo, Ta, Re, Be, Hf, Os, Bi, and I, wherein the W is tungsten, wherein the O is oxygen, and wherein the x, y, and z satisfy 0.001?x/y?1 and 3.0<z/y.
    Type: Application
    Filed: December 24, 2020
    Publication date: January 26, 2023
    Inventors: Akinari NOSHITA, Hiroki NAKAYAMA, Takahisa KAWANO, Takeshi CHONAN
  • Patent number: 11447663
    Abstract: An adhesive composition layer that transmits light in a visible light region and absorbs light in a near-infrared region, has a low haze value, and a near-infrared absorbing film, a laminated structure, a laminated body using the above adhesive composition and adhesive layer, and an adhesive layer, a near-infrared absorbing film, a laminated structure, a laminated body, and an adhesive composition containing composite tungsten oxide fine particles, a dispersant, a metal coupling agent having an amino group, an adhesive, and a crosslinking agent, wherein the composite tungsten oxide fine particles include a hexagonal crystal structure, and the composite tungsten oxide fine particles have lattice constant values such as 7.3850 ? or more and 7.4186 ? or less on the a-axis, and 7.5600 ? or more and 7.6240 ? or less on the c-axis, and the composite tungsten oxide fine particles having an average particle size of 100 nm or less.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: September 20, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Mika Okada, Hirofumi Tsunematsu, Takeshi Chonan
  • Publication number: 20220251400
    Abstract: An infrared-absorbing fine particle-containing composition, including: infrared absorbing fine particles, a dispersant, and a solvent, wherein the dispersant has a polyether structure, has a glass transition temperature of ?150° C. or higher and 0° C. or lower, and is contained in an amount of 10 parts by mass or more with respect to 100 parts by mass of the infrared absorbing fine particles, and a solvent content is 10 mass % or less.
    Type: Application
    Filed: July 9, 2020
    Publication date: August 11, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hirofumi TSUNEMATSU, Takeshi CHONAN, Mika OKADA, Hideaki FUKUYAMA
  • Publication number: 20220228012
    Abstract: The present invention provides an anti-counterfeit ink composition including organic-inorganic hybrid infrared absorbing particles, and either a dispersant or a surfactant, or both, wherein the organic-inorganic hybrid infrared absorbing particles include infrared absorbing particles and a coating resin that covers at least a part of a surface of the infrared absorbing particles.
    Type: Application
    Filed: May 25, 2020
    Publication date: July 21, 2022
    Inventors: Hirofumi TSUNEMATSU, Takeshi CHONAN
  • Patent number: 11345607
    Abstract: There is provided a near-infrared absorbing fine particle dispersion liquid containing near-infrared absorbing fine particles, thereby as well as exhibiting near-infrared light absorption properties and suppressing a scorching sensation on the skin when used in structures such as window materials and the like, also enabling usage of communication devices, imaging devices, sensors and the like that employ near-infrared light through these structures, a near-infrared absorbing film or a near-infrared absorbing glass, a dispersion body or a laminated transparent substrate, the dispersion liquid containing at least composite tungsten oxide fine particles and antimony doped tin oxide fine particles and/or tin doped indium oxide fine particles as near-infrared absorbing fine particles, wherein in the composite tungsten oxide fine particles, an average value of a transmittance in a wavelength range of 800 to 900 nm is 30% or more and 60% or less, and an average value of a transmittance in a wavelength range of 1200
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: May 31, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hirofumi Tsunematsu, Takeshi Chonan
  • Patent number: 11312116
    Abstract: Boride particles represented by a general formula XB, (where X is at least one kind of metal element selected from Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Sr, Ca, and m is a number indicating an amount of boron in the general formula) are provided, wherein an amount of carbon included in the boride particles is 0.2% by mass or less, as measured by a combustion-infrared absorption method.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: April 26, 2022
    Assignee: SUMITOMO METAL MINING CO., LTD.
    Inventors: Kenji Fukuda, Mitsunobu Miratsu, Hirofumi Tsunematsu, Takeshi Chonan
  • Publication number: 20220081318
    Abstract: Provided are surface-treated infrared-absorbing fine particles that are infrared-absorbing fine particles each having a crystallite size greater than or equal to 30 nm and a surface that is coated with a coating layer that contains at least one selected from a hydrolysis product of a metal chelate compound, a polymer of the hydrolysis product of the metal chelate compound, a hydrolysis product of a metal cyclic oligomer compound, and a polymer of the hydrolysis product of the metal cyclic oligomer compound.
    Type: Application
    Filed: December 12, 2019
    Publication date: March 17, 2022
    Applicant: SUMITOMO METAL MINING CO., LTD.
    Inventors: Hirofumi TSUNEMATSU, Takeshi CHONAN
  • Publication number: 20220049105
    Abstract: A method of producing organic-inorganic hybrid infrared absorbing particles includes a dispersion liquid preparing step of preparing a dispersion liquid containing infrared absorbing particles, a dispersant, and a dispersion medium; a dispersion medium removing step of removing the dispersion medium from the dispersion liquid by an evaporation; a raw material mixture liquid preparing step of preparing a raw material mixture liquid containing the infrared absorbing particles collected after the dispersion medium removing step, a coating resin material, an organic solvent, an emulsifying agent, water, and a polymerization initiator; a stirring step of stirring the raw material mixture liquid while cooling; and a polymerizing step of polymerizing the coating resin material after deoxygenation treatment which reduces an amount of oxygen in the raw material mixture liquid.
    Type: Application
    Filed: December 16, 2019
    Publication date: February 17, 2022
    Inventors: Hirofumi TSUNEMATSU, Takeshi CHONAN, Atsushi TOFUKU, Seigou KAWAGUCHI, Naohiro KOBAYASHI