Patents by Inventor Yuhei INATA

Yuhei INATA 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).

  • Publication number: 20240117248
    Abstract: A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and having a minimum reflectance of 20% or more in a specific wavelength region, in which the specific wavelength region is from the emission peak wavelength of the phosphor to 800 nm, and a light-emitting device comprising the phosphor.
    Type: Application
    Filed: December 4, 2023
    Publication date: April 11, 2024
    Applicants: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki KURUSHIMA, Yuhei Inata, Naoto Hirosaki
  • Publication number: 20240101898
    Abstract: A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and when, in a powder X-ray diffraction spectrum of the phosphor, the intensity of a peak that appears in a region where 2?=38-39° is designated as Ix and the intensity of a peak that appears in a region where 2?=37-38° is designated as Iy, the relative intensity Ix/Iy of Ix to Iy is 0.140 or less, and a light-emitting device comprising the phosphor.
    Type: Application
    Filed: December 4, 2023
    Publication date: March 28, 2024
    Applicants: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
  • Patent number: 11891554
    Abstract: A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and having a minimum reflectance of 20% or more in a specific wavelength region, in which the specific wavelength region is from the emission peak wavelength of the phosphor to 800 nm, and a light-emitting device comprising the phosphor.
    Type: Grant
    Filed: March 29, 2023
    Date of Patent: February 6, 2024
    Assignees: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
  • Patent number: 11891555
    Abstract: A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and having a minimum reflectance of 20% or more in a specific wavelength region, in which the specific wavelength region is from the emission peak wavelength of the phosphor to 800 nm, and a light-emitting device comprising the phosphor.
    Type: Grant
    Filed: March 30, 2023
    Date of Patent: February 6, 2024
    Assignees: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
  • Patent number: 11884857
    Abstract: A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and when, in a powder X-ray diffraction spectrum of the phosphor, the intensity of a peak that appears in a region where 2?=38-39° is designated as Ix and the intensity of a peak that appears in a region where 2?=37-38° is designated as Iy, the relative intensity Ix/Iy of Ix to Iy is 0.140 or less, and a light-emitting device comprising the phosphor.
    Type: Grant
    Filed: March 30, 2023
    Date of Patent: January 30, 2024
    Assignees: Mitsubishi Chemical Corporation, National Institute for Materials Science
    Inventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
  • Patent number: 11884856
    Abstract: A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and when, in a powder X-ray diffraction spectrum of the phosphor, the intensity of a peak that appears in a region where 2?=38-39° is designated as Ix and the intensity of a peak that appears in a region where 2?=37-38° is designated as Iy, the relative intensity Ix/Iy of Ix to Iy is 0.140 or less, and a light-emitting device comprising the phosphor.
    Type: Grant
    Filed: March 30, 2023
    Date of Patent: January 30, 2024
    Assignees: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
  • Publication number: 20230287267
    Abstract: A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and having a minimum reflectance of 20% or more in a specific wavelength region, in which the specific wavelength region is from the emission peak wavelength of the phosphor to 800 nm, and a light-emitting device comprising the phosphor.
    Type: Application
    Filed: March 29, 2023
    Publication date: September 14, 2023
    Applicants: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki KURUSHIMA, Yuhei Inata, Naoto Hirosaki
  • Publication number: 20230250334
    Abstract: A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and having a minimum reflectance of 20% or more in a specific wavelength region, in which the specific wavelength region is from the emission peak wavelength of the phosphor to 800 nm, and a light-emitting device comprising the phosphor.
    Type: Application
    Filed: March 30, 2023
    Publication date: August 10, 2023
    Applicants: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki KURUSHIMA, Yuhei INATA, Naoto HIROSAKI
  • Publication number: 20230242813
    Abstract: A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and when, in a powder X-ray diffraction spectrum of the phosphor, the intensity of a peak that appears in a region where 2?=38-39° is designated as Ix and the intensity of a peak that appears in a region where 2?=37-38° is designated as Iy, the relative intensity Ix/Iy of Ix to Iy is 0.140 or less, and a light-emitting device comprising the phosphor.
    Type: Application
    Filed: March 30, 2023
    Publication date: August 3, 2023
    Applicants: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki KURUSHIMA, Yuhei Inata, Naoto Hirosaki
  • Publication number: 20230235221
    Abstract: A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and when, in a powder X-ray diffraction spectrum of the phosphor, the intensity of a peak that appears in a region where 2?=38-39° is designated as Ix and the intensity of a peak that appears in a region where 2?=37-38° is designated as Iy, the relative intensity Ix/Iy of Ix to Iy is 0.140 or less, and a light-emitting device comprising the phosphor.
    Type: Application
    Filed: March 30, 2023
    Publication date: July 27, 2023
    Applicants: Mitsubishi Chemical Corporation, National Institute for Materials Science
    Inventors: Tomoyuki KURUSHIMA, Yuhei Inata, Naoto Hirosaki
  • Patent number: 11661549
    Abstract: A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and when, in a powder X-ray diffraction spectrum of the phosphor, the intensity of a peak that appears in a region where 2?=38-39° is designated as Ix and the intensity of a peak that appears in a region where 2?=37-38° is designated as Iy, the relative intensity Ix/Iy of Ix to Iy is 0.140 or less, and a light-emitting device comprising the phosphor.
    Type: Grant
    Filed: September 13, 2022
    Date of Patent: May 30, 2023
    Assignees: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
  • Patent number: 11655416
    Abstract: A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and having a minimum reflectance of 20% or more in a specific wavelength region, in which the specific wavelength region is from the emission peak wavelength of the phosphor to 800 nm, and a light-emitting device comprising the phosphor.
    Type: Grant
    Filed: September 13, 2022
    Date of Patent: May 23, 2023
    Assignees: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
  • Patent number: 11279875
    Abstract: Provided is a nitride phosphor having two or more maximum absorption points in a range of 3,200 to 3,300 cm?1 in an infrared absorption (FT-IR) spectrum. The nitride phosphor of the present invention has excellent emission characteristics and is highly reliable when used in devices.
    Type: Grant
    Filed: January 15, 2020
    Date of Patent: March 22, 2022
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Ryo Koizumi, Yuhei Inata, Saiko Kiyohara, Masahito Isaka, Naoyuki Komuro, Kohei Matsuda
  • Publication number: 20200148947
    Abstract: Provided is a nitride phosphor having two or more maximum absorption points in a range of 3,200 to 3,300 cm?1 in an infrared absorption (FT-IR) spectrum. The nitride phosphor of the present invention has excellent emission characteristics and is highly reliable when used in devices.
    Type: Application
    Filed: January 15, 2020
    Publication date: May 14, 2020
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Ryo KOIZUMI, Yuhei INATA, Saiko KIYOHARA, Masahito ISAKA, Naoyuki KOMURO, Kohei MATSUDA
  • Publication number: 20190031956
    Abstract: The present invention provides an LYSN phosphor having an emission peak in a long wavelength range, and having high emission luminance and a high temperature maintenance rate. The present invention is a phosphor including a tetragonal crystal phase, in which the crystal phase includes M element, La, A element, Si, and N, and satisfies a specific expression, and a lattice constant a is 10.104 ? or more and 10.154 ? or less.
    Type: Application
    Filed: September 27, 2018
    Publication date: January 31, 2019
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Yuhei INATA, Naoyuki KOMURO, Kentarou HORIBE