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: 20240117248Abstract: 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: ApplicationFiled: December 4, 2023Publication date: April 11, 2024Applicants: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Tomoyuki KURUSHIMA, Yuhei Inata, Naoto Hirosaki
-
Publication number: 20240101898Abstract: 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: ApplicationFiled: December 4, 2023Publication date: March 28, 2024Applicants: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
-
Patent number: 11891554Abstract: 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: GrantFiled: March 29, 2023Date of Patent: February 6, 2024Assignees: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
-
Patent number: 11891555Abstract: 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: GrantFiled: March 30, 2023Date of Patent: February 6, 2024Assignees: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
-
Patent number: 11884857Abstract: 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: GrantFiled: March 30, 2023Date of Patent: January 30, 2024Assignees: Mitsubishi Chemical Corporation, National Institute for Materials ScienceInventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
-
Patent number: 11884856Abstract: 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: GrantFiled: March 30, 2023Date of Patent: January 30, 2024Assignees: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
-
Publication number: 20230287267Abstract: 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: ApplicationFiled: March 29, 2023Publication date: September 14, 2023Applicants: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Tomoyuki KURUSHIMA, Yuhei Inata, Naoto Hirosaki
-
Publication number: 20230250334Abstract: 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: ApplicationFiled: March 30, 2023Publication date: August 10, 2023Applicants: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Tomoyuki KURUSHIMA, Yuhei INATA, Naoto HIROSAKI
-
Publication number: 20230242813Abstract: 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: ApplicationFiled: March 30, 2023Publication date: August 3, 2023Applicants: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Tomoyuki KURUSHIMA, Yuhei Inata, Naoto Hirosaki
-
Publication number: 20230235221Abstract: 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: ApplicationFiled: March 30, 2023Publication date: July 27, 2023Applicants: Mitsubishi Chemical Corporation, National Institute for Materials ScienceInventors: Tomoyuki KURUSHIMA, Yuhei Inata, Naoto Hirosaki
-
Patent number: 11661549Abstract: 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: GrantFiled: September 13, 2022Date of Patent: May 30, 2023Assignees: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
-
Patent number: 11655416Abstract: 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: GrantFiled: September 13, 2022Date of Patent: May 23, 2023Assignees: Mitsubishi Chemical Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Tomoyuki Kurushima, Yuhei Inata, Naoto Hirosaki
-
Patent number: 11279875Abstract: 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: GrantFiled: January 15, 2020Date of Patent: March 22, 2022Assignee: Mitsubishi Chemical CorporationInventors: Ryo Koizumi, Yuhei Inata, Saiko Kiyohara, Masahito Isaka, Naoyuki Komuro, Kohei Matsuda
-
Publication number: 20200148947Abstract: 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: ApplicationFiled: January 15, 2020Publication date: May 14, 2020Applicant: Mitsubishi Chemical CorporationInventors: Ryo KOIZUMI, Yuhei INATA, Saiko KIYOHARA, Masahito ISAKA, Naoyuki KOMURO, Kohei MATSUDA
-
Publication number: 20190031956Abstract: 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: ApplicationFiled: September 27, 2018Publication date: January 31, 2019Applicant: Mitsubishi Chemical CorporationInventors: Yuhei INATA, Naoyuki KOMURO, Kentarou HORIBE