Patents Examined by C. Melissa Koslow
  • Patent number: 11041121
    Abstract: A method of preparing quantum dots and the quantum dots are provided. The quantum dots are doped with manganese ions and various kinds of halogen ions such that when the quantum dots emit light, they will have a dual luminescence system, one is intrinsic luminescence of perovskite quantum dots and the other is doping luminescence of the manganese ions. The intrinsic luminescence of perovskite is adjustable from 410 nm to 520 nm based on the ratio of the amounts of different substances having various halide ions, which increases the wavelength range of a quantum dot luminescence spectrum so that the application scenario of the quantum dots is wider.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: June 22, 2021
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Xu Chen
  • Patent number: 11034609
    Abstract: Provided is a wavelength conversion member that is less decreased in luminescence intensity with time by irradiation with light of an LED or LD and a light emitting device using the wavelength conversion member. A wavelength conversion member is formed of an inorganic phosphor dispersed in a glass matrix, wherein the glass matrix contains, in % by mole, 30 to 85% SiO2, 0 to 20% B2O3, 0 to 25% Al2O3, 0 to 3% Li2O, 0 to 3% Na2O, 0 to 3% K2O, 0 to 3% Li2O+Na2O+K2O, 0 to 35% MgO, 0 to 35% CaO, 0 to 35% SrO, 0 to 35% BaO, 0.1 to 45% MgO+CaO+SrO+BaO, and 0 to 4% ZnO, and the inorganic phosphor is at least one selected from the group consisting of an oxide phosphor, a nitride phosphor, an oxynitride phosphor, a chloride phosphor, an oxychloride phosphor, a halide phosphor, an aluminate phosphor, and a halophosphate phosphor.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: June 15, 2021
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Naoki Fujita, Takashi Murata
  • Patent number: 11034888
    Abstract: Provided are an aluminate fluorescent material, a light emitting device, and a method for producing an aluminate fluorescent material. The aluminate fluorescent material, having an aluminate composition containing: at least one alkaline earth metal element selected from the group consisting of Ba, Sr, and Ca; Mn; and optionally Eu and/or Mg, wherein the fluorine content in the aluminate fluorescent material is 100 ppm or more and 7,000 ppm or less, and the average particle diameter of the aluminate fluorescent material, which is measured according to a Fisher Sub-Sieve Sizer method, is 8 ?m or more.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: June 15, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Kazuya Nishimata, Tomokazu Yoshida, Shoji Hosokawa
  • Patent number: 11028320
    Abstract: Provided is an aluminate fluorescent material having a high emission intensity and having a composition containing a first element that contains one or more of Ba and Sr, and a second element that contains Mg and Mn. In the composition, when a molar ratio of Al is 10, a total molar ratio of the first element is a parameter a, a total molar ratio of the second element is a parameter b, a molar ratio of Sr is a product of a parameter m and the parameter a, a molar ratio of Mn is a product of a parameter n and the parameter b. The parameters a and b satisfy 0.5<b<a?0.5b+0.5<1.0, the parameter m satisfies 0?m?1.0, and the parameter n satisfies 0.4?n?0.7.
    Type: Grant
    Filed: December 27, 2018
    Date of Patent: June 8, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Tomokazu Yoshida, Kazuya Nishimata, Shoji Hosokawa
  • Patent number: 11021651
    Abstract: The present invention provides nanostructure compositions and methods of producing nanostructure compositions. The nanostructure compositions comprise a population of nanostructures comprising thiol-functionalized ligands to increase the stability of the composition in thiol resins. The present invention also provides nanostructure films comprising a population of nanostructures comprising thiol-functionalized ligands and methods of making nanostructure films using these nanostructures.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: June 1, 2021
    Assignee: Nanosys, Inc.
    Inventors: Ilan Jen-La Plante, Chunming Wang
  • Patent number: 11021652
    Abstract: Phospher particles with a Protective Layer and a method for producing phosphor particles with a protective layer are disclosed. In an embodiment the method includes treating Si-containing and/or Al-containing phosphor with an acid solution, wherein a pH value of the acid solution is maintained within a range of pH 3.5 to pH 7 for a period of at least 1 h, wherein an Si-containing layer is formed on the phosphor particles, wherein the Si-containing layer has a higher content of Si on a surface than the phosphor particles, and/or wherein an Al-containing layer is formed on the phosphor particles, wherein the Al-containing layer has a modified content of aluminum on the surface than the phosphor particles and tempering the treated phosphor particles at a temperature of at least 100° C. thereby producing the protective layer.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: June 1, 2021
    Assignees: OSRAM OPTO SEMICONDUCTORS GMBH, OSRAM GMBH
    Inventors: Tim Fiedler, Sonja Tragl, Stefan Lange
  • Patent number: 11015117
    Abstract: An object of the present invention is to provide a semiconductor nanoparticle-containing dispersion liquid having high initial luminous efficacy and exhibiting excellent moisture resistance; and a film produced using the dispersion liquid. The semiconductor nanoparticle-containing dispersion liquid of the present invention contains semiconductor nanoparticles from which zinc, sulfur, and indium are detected by X-ray photoelectron spectroscopy; and acrylate or methacrylate, in which a molar ratio of zinc to indium in the semiconductor nanoparticles which is acquired by the X-ray photoelectron spectroscopy satisfies Expression (1a). 2.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: May 25, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Tsutomu Sasaki, Masashi Ono
  • Patent number: 11015118
    Abstract: The present disclosure relates to a phosphor ceramic comprising a plurality of luminescence conversion materials, wherein a luminescence conversion material serves as a matrix material for the others.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: May 25, 2021
    Assignee: Seaborough IP I B.V.
    Inventors: Thomas Jüstel, Stephanie Möller, Florian Baur, Nadja Kratz, Jan Werner, Murat Demirtas, Jürgen Honold, Tom Hilgerink
  • Patent number: 11014877
    Abstract: An ether-bridged dication is provided with two monovalent cations bonded via a carbon chain having ether group(s). The ether-bridged dication, monovalent cations, and anions are contained together within an ionic liquid electrolyte which is applied to a charge storage device. The ether-bridged dication, the ionic liquid electrolyte, and the charge storage device have operational abilities at room temperatures or below, and a reachable working potential of 3.5 V.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: May 25, 2021
    Assignee: NATIONAL CHENG KUNG UNIVERSITY
    Inventors: Hsisheng Teng, I-wen Sun, Hsin-Chieh Huang, Yung-Che Yen, Jui-Cheng Chang
  • Patent number: 11008511
    Abstract: Disclosed are a method of producing an aluminate fluorescent material, such an aluminate fluorescent material, and a light emitting device.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: May 18, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Kazuya Nishimata, Tomokazu Yoshida, Shoji Hosokawa
  • Patent number: 11001755
    Abstract: A sintered phosphor-composite having a high internal quantum efficiency and a high transmittance is provided. The object can be achieved with a sintered phosphor-composite including a nitride phosphor and a fluoride inorganic binder, wherein, in cross-sectional observation, the sintered phosphor-composite includes at least a portion in which voids of not more than 1 ?m are present in a number of not more than 700 within a cross-sectional area of 0.046 mm2, or a portion having a void area fraction of not more than 3% within a cross-sectional area of 0.046 mm2.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: May 11, 2021
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Takashi Harada, Yukihiro Miyamoto, Kentarou Horibe
  • Patent number: 11001754
    Abstract: A method of producing a nitride fluorescent material including a step of first heat-treating a first compound containing at least one alkaline earth metal element selected from the group consisting of Ba, Sr, Ca and Mg, a second compound containing at least one element selected from the group consisting of Eu, Ce, Tb and Mn, and a Si-containing compound, in an atmosphere containing nitrogen to obtain a calcined product of raw materials, and a step of second heat-treating the calcined product of raw materials, a Ba-containing compound, a Si-containing compound, and optionally a third compound containing at least one element selected from the group consisting of Eu, Ce, Tb and Mn, and optionally a fourth compound containing at least one alkaline earth metal element selected from the group consisting of Sr, Ca and Mg, in an atmosphere containing nitrogen to obtain a nitride fluorescent material is provided, wherein the ratio of the charge-in molar amount of Ba to the total charge-in molar amount of at least one
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: May 11, 2021
    Assignee: NICHIA CORPORATION
    Inventors: Shoji Hosokawa, Daiki Kuramoto
  • Patent number: 11004581
    Abstract: Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material, such as Y-phase hexagonal ferrite material, and methods of manufacturing. In some embodiments, sodium or potassium can be added into the crystal structure of the hexagonal ferrite material in order to achieve improved resonant frequencies in the range of 500 MHz to 1 GHz useful for radiofrequency applications.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: May 11, 2021
    Assignee: Skyworks Solutions, Inc.
    Inventor: Michael David Hill
  • Patent number: 11001756
    Abstract: A method of producing hybrid fluorescent material includes dispersing Lu3Al5O12:Ce fluorescent material particles in a first solution; mixing the first solution in a second solution, the second solution including a mixture of a first metallic salt containing at least one element selected from the group consisting of yttrium, gadolinium, and terbium, a second metallic salt containing aluminum and/or gallium, and a third metallic salt containing cerium, wherein the mixing attaches (Y,Gd,Tb)3(Al,Ga)5O12:Ce fluorescent material precursor particles on surfaces of the Lu3Al5O12:Ce fluorescent material particles to obtain a hybrid fluorescent material precursor; separating the hybrid fluorescent material precursor particles from the first and second solutions; and calcining the hybrid fluorescent material precursor particles to obtain a hybrid fluorescent material of Lu3Al5O12:Ce fluorescent material particles covered by (Y,Gd,Tb)3(Al,Ga)5O12:Ce fluorescent material.
    Type: Grant
    Filed: August 23, 2019
    Date of Patent: May 11, 2021
    Assignee: NICHIA CORPORATION
    Inventor: Naoto Fujioka
  • Patent number: 11005028
    Abstract: A piezoelectric composition including copper, germanium and a complex oxide represented by a compositional formula KmNbO3 and having a perovskite structure, in which m in the compositional formula satisfies 0.970?m?0.999, and with respect to 1 mol of the complex oxide, x mol % of copper in terms of a copper element and y mol % of germanium in terms of a germanium element are contained, wherein x satisfies 0.100?x?1.000 and y satisfies 0.000<y?1.500.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: May 11, 2021
    Assignee: TDK CORPORATION
    Inventors: Hiroki Katoh, Yuiko Hirose, Masakazu Hirose, Mirai Ishida
  • Patent number: 11005010
    Abstract: A phosphor has a composition represented by Chemical formula 1: 1.5Y2O3·2.5aAl2O3:Ce where a is a number satisfying 1.02<a<1.1.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: May 11, 2021
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.
    Inventors: Yoshitaka Funayama, Yumi Kanno, Hirofumi Takemura, Tsutomu Ishii, Yasuhiro Shirakawa
  • Patent number: 10995231
    Abstract: The invention relates to a pigment particle for security applications, comprising a duromer matrix and a plurality of core particles of a thermoplastic polymer with a feature substance dissolved in the core particles embedded therein, wherein the feature substance is an organic or metalorganic substance. The invention further relates to a method for producing security pigments, for example luminescent printing pigments, by means of incorporation into a duromer matrix of thermoplastic polymer particles in which the luminescent illuminant is present respectively in dissolved form.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: May 4, 2021
    Assignee: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH
    Inventors: Johann Kecht, Axel Schlossbauer
  • Patent number: 10988686
    Abstract: Disclosed is a luminescent particle including a first material, wherein the luminescent particle includes at least one particle including a second material and at least one nanoparticle dispersed in the second material; wherein the first material and the second material have a bandgap superior or equal to 3 eV; and wherein the luminescent particle is a colloidal particle. Also disclosed is a light emitting material, a support and an optoelectronic device.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: April 27, 2021
    Assignee: NEXDOT
    Inventors: Michele D'amico, Alexis Kuntzmann, Robin Faideau
  • Patent number: 10988643
    Abstract: Fiber-containing composites are described that include woven or non-woven fibers, and a binder that holds the fibers together. The binder may include the reaction product of a starch and a polycarboxylic acid. The starch has a weight average molecular weight that ranges from 1×106 Daltons to 1×107 Daltons. The fiber-containing composite has an unaged tensile strength of greater than 4.0 and an aged tensile strength greater than 3.0. Also described are methods of making the fiber-containing composites. The methods may include applying a binder composition to fibers to form coated fibers, measuring a moisture content of the coated fibers, and curing the coated fibers in a curing oven to form the fiber-containing composite. The binder composition may include a starch having a weight average molecular weight that ranges from 1×106 Daltons to 1×107 Daltons, and a polycarboxylic acid.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: April 27, 2021
    Assignee: Johns Manville
    Inventors: Kiarash Alavi, Uranchimeg Lester, Ameya Natu, James Cottier, Jawed Asrar, Philip Francis Miele
  • Patent number: 10984928
    Abstract: Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material and methods of manufacturing. The hexagonal ferrite material can be Y-phase strontium hexagonal ferrite material. In some embodiments, sodium can be added into the crystal structure of the hexagonal ferrite material in order to achieve high resonance frequencies while maintaining high permeability.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: April 20, 2021
    Assignee: Skyworks Solutions, Inc.
    Inventor: Michael David Hill