Patents by Inventor Yuki Iguchi

Yuki Iguchi 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: 9776250
    Abstract: The present invention provides a silver nano-particle production method which is safe and simple also in terms of scaled-up industrial-level production, in a so-called thermal decomposition method in which a silver-amine complex compound is thermally decomposed to form silver nano-particles. A method for producing silver nano-particles comprising: mixing an aliphatic hydrocarbon amine and a silver compound in the presence of an alcohol solvent having 3 or more carbon atoms to form a complex compound comprising the silver compound and the amine; and thermally decomposing the complex compound by heating to form silver nano-particles.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: October 3, 2017
    Assignee: DAICEL CORPORATION
    Inventors: Yuki Iguchi, Kazuki Okamoto
  • Publication number: 20160264810
    Abstract: The present invention provides a dispersion liquid containing silver nano-particles that develops excellent conductivity by low-temperature calcining and has silver nano-particles stably and well dispersed in a dispersion solvent, and a method for producing the dispersion liquid containing silver nano-particles.
    Type: Application
    Filed: October 1, 2014
    Publication date: September 15, 2016
    Applicant: DAICEL CORPORATION
    Inventors: Kazuki OKAMOTO, Yuki IGUCHI
  • Patent number: 9422443
    Abstract: Silver nanoparticle-containing ink which develops excellent conductivity by low-temperature calcining and has silver nano-particles stably and well dispersed in a dispersion solvent. Method for producing the silver nanoparticle-containing ink, by: mixing a silver compound with amines comprising an aliphatic hydrocarbon monoamine (A) comprising one amino group and an aliphatic hydrocarbon group having 6 or more carbon atoms in total; and further comprising at least one of: an aliphatic hydrocarbon monoamine (B) comprising one amino group and an aliphatic hydrocarbon group having 5 or less carbon atoms in total; and an aliphatic hydrocarbon diamine (C) comprising two amino groups and an aliphatic hydrocarbon group having 8 or less carbon atoms in total; to form a complex compound comprising the silver compound and the amines; thermally decomposing the complex compound by heating to form silver nano-particles; and dispersing the silver nano-particles in a dispersion solvent containing an alicyclic hydrocarbon.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: August 23, 2016
    Assignee: DAICEL CORPORATION
    Inventors: Yuki Iguchi, Kazuki Okamoto
  • Publication number: 20150225588
    Abstract: The present invention provides silver nanoparticle-containing ink that develops excellent conductivity by low-temperature calcining and has silver nano-particles stably and well dispersed in a dispersion solvent, and a method for producing the silver nanoparticle-containing ink.
    Type: Application
    Filed: July 29, 2013
    Publication date: August 13, 2015
    Applicant: DAICEL CORPORATION
    Inventors: Yuki Iguchi, Kazuki Okamoto
  • Publication number: 20150217375
    Abstract: The present invention provides a silver nano-particle production method which is safe and simple also in terms of scaled-up industrial-level production, in a so-called thermal decomposition method in which a silver-amine complex compound is thermally decomposed to form silver nano-particles. A method for producing silver nano-particles comprising: mixing an aliphatic hydrocarbon amine and a silver compound in the presence of an alcohol solvent having 3 or more carbon atoms to form a complex compound comprising the silver compound and the amine; and thermally decomposing the complex compound by heating to form silver nano-particles.
    Type: Application
    Filed: July 31, 2013
    Publication date: August 6, 2015
    Applicant: DAICEL CORPORATION
    Inventors: Yuki Iguchi, Kazuki Okamoto
  • Publication number: 20150001452
    Abstract: The present invention provides silver nano-particles that are excellent in stability and develop excellent conductivity by low-temperature calcining, a producing method for same, and a silver coating composition comprising the silver nano-particles.
    Type: Application
    Filed: January 7, 2013
    Publication date: January 1, 2015
    Inventors: Masato Kurihara, Kazuki Okamoto, Yuki Iguchi
  • Publication number: 20140346412
    Abstract: The present invention provides silver nano-particles that are excellent in stability and develop excellent conductivity by low-temperature calcining, a producing method for same, and a silver coating composition comprising the silver nano-particles.
    Type: Application
    Filed: January 7, 2013
    Publication date: November 27, 2014
    Inventors: Kazuki Okamoto, Yuki Iguchi, Masato Kurihara
  • Patent number: 8410470
    Abstract: Disclosed is an ultraviolet fluorescent material having high light emission efficiency, wherein the peak wavelength of ultraviolet light to be emitted can be controlled by having a quantum dot structure wherein a fine crystal of zinc oxide having an average diameter of 1-10 nm serves as a core, and the surface of the zinc oxide fine crystal is covered with at least one of LiGaO2, LiAlO2, NaGaO2 and NaAlO2, which has a crystal structure similar to that of the zinc oxide and low lattice mismatch and hardly suffers from structural defects, or a solid solution thereof.
    Type: Grant
    Filed: December 26, 2008
    Date of Patent: April 2, 2013
    Assignee: Osaka University
    Inventors: Takahisa Omata, Shinichi Hashimoto, Katsuhiro Nose, Satoshi Kobayashi, Yuki Iguchi
  • Patent number: 8089061
    Abstract: An inorganic EL device is provided with a substrate, a first electrode, a first insulating layer, a light emitting layer, a second insulating layer and a second electrode. The inorganic EL light emitting device is characterized in that the light emitting layer contains a quantum dot and is arranged between the first insulating layer and the second insulating layer by being brought into contact with each of the insulating layers.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: January 3, 2012
    Assignee: Hoya Corporation
    Inventors: Satoshi Kobayashi, Yuki Iguchi
  • Publication number: 20100283037
    Abstract: Disclosed is an ultraviolet fluorescent material having high light emission efficiency, wherein the peak wavelength of ultraviolet light to be emitted can be controlled by having a quantum dot structure wherein a fine crystal of zinc oxide having an average diameter of 1-10 nm serves as a core, and the surface of the zinc oxide fine crystal is covered with at least one of LiGaO2, LiAlO2, NaGaO2 and NaAlO2, which has a crystal structure similar to that of the zinc oxide and low lattice mismatch and hardly suffers from structural defects, or a solid solution thereof.
    Type: Application
    Filed: December 26, 2008
    Publication date: November 11, 2010
    Applicant: OSAKA UNIVERSITY
    Inventors: Takahisa Omata, Shinichi Hashimoto, Katsuhiro Nose, Satoshi Kobayashi, Yuki Iguchi
  • Patent number: 7829154
    Abstract: To provide a (homogeneous) particle deposit without any impurity contamination, on which only particles with a desired size are deposited. A solution, with particles dispersed in a solvent, is jetted as a flow of fine liquid droplets from a tip part of a capillary, and the jetted fine liquid droplets are electrically charged. This flow of the droplets is introduced into a vacuum chamber through a jet nozzle, as a free jet flow. The free jet flow that travels in the vacuum chamber is introduced into an inside of a deposition chamber, inside of which is set at lower pressure, through a skimmer nozzle provided in the deposition chamber, as an ion beam. Subsequently, by an energy separation device, only particles having particular energy are selected from the electrically charged particles in the flow, and are deposited on a deposited body disposed in an inside of the deposition chamber.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: November 9, 2010
    Assignee: Hoya Corporation
    Inventors: Satoshi Kobayashi, Yuki Iguchi
  • Publication number: 20090242871
    Abstract: An inorganic EL device is provided with a substrate, a first electrode, a first insulating layer, a light emitting layer, a second insulating layer and a second electrode. The inorganic EL light emitting device is characterized in that the light emitting layer contains a quantum dot and is arranged between the first insulating layer and the second insulating layer by being brought into contact with each of the insulating layers.
    Type: Application
    Filed: June 4, 2007
    Publication date: October 1, 2009
    Applicant: HOYA CORPORATION
    Inventors: Satoshi Kobayashi, Yuki Iguchi
  • Publication number: 20090093105
    Abstract: To provide a (homogeneous) particle deposit without any impurity contamination, on which only particles with a desired size are deposited. A solution, with particles dispersed in a solvent, is jetted as a flow of fine liquid droplets from a tip part of a capillary, and the jetted fine liquid droplets are electrically charged. This flow of the droplets is introduced into a vacuum chamber through a jet nozzle, as a free jet flow. The free jet flow that travels in the vacuum chamber is introduced into an inside of a deposition chamber, inside of which is set at lower pressure, through a skimmer nozzle provided in the deposition chamber, as an ion beam. Subsequently, by an energy separation device, only particles having particular energy are selected from the electrically charged particles in the flow, and are deposited on a deposited body disposed in an inside of the deposition chamber.
    Type: Application
    Filed: October 21, 2005
    Publication date: April 9, 2009
    Applicant: HOYA CORPORATION
    Inventors: Satoshi Kobayashi, Yuki Iguchi