Patents by Inventor Hisayoshi Daicho
Hisayoshi Daicho 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).
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Publication number: 20230365860Abstract: A phosphor has a crystal structure of a garnet type and is expressed by a general formula BaaY3-a-bAl5-aSiaO12:Ceb (wherein a and b are values within a range that satisfies 12.0113?A+0.036b?0.003a?12.0153, when A denotes a lattice size of the crystal structure, a [mol] denotes an amount of Ba incorporated in solid solution, and b [mol] denotes an amount of Ce incorporated in solid solution).Type: ApplicationFiled: July 27, 2023Publication date: November 16, 2023Applicant: KOITO MANUFACTURING CO., LTD.Inventors: Atsushi NAKAMURA, Hisayoshi DAICHO, Takeshi IWASAKI
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Publication number: 20230258830Abstract: A method of manufacturing a scintillator material includes providing a substrate made of a quartz glass and having a recess formed therein; filling the recess with a raw material powder obtained by mixing an iodide raw material and SiO2 fine particles; after filling the recess, disposing a lid on the substrate to cover the recess; and after disposing the lid, heating the substrate, thereby forming a nanocomposite layer in which an iodide phosphor is introduced into a cristobalite structure.Type: ApplicationFiled: February 7, 2023Publication date: August 17, 2023Inventors: Hisayoshi DAICHO, Takeshi IWASAKI, Atsushi NAKAMURA
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Patent number: 11402077Abstract: A fluorescent member includes: a wavelength converter including an incidence part on which a light of a light source is incident and an output part from which a converted light subjected to wavelength conversion as a result of excitation by an incident light is output; and a reflecting part provided in at least a portion of a surface of the wavelength converter. The wavelength converter is comprised of a material whereby a degree of scattering of the light of the light source incident via the incidence part and traveling toward the output part is smaller than in the case of a polycrystalline material.Type: GrantFiled: September 17, 2018Date of Patent: August 2, 2022Assignee: KOITO MANUFACTURING CO., LTD.Inventors: Hisayoshi Daicho, Yu Shinomiya
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Patent number: 11377593Abstract: In a phosphor according to an aspect, an emission site has a perovskite crystal structure expressed by ABX3, in which A and B are each a cation and X is an anion, and an emission element is located at a B site serving as a body center of the perovskite crystal structure.Type: GrantFiled: August 27, 2019Date of Patent: July 5, 2022Assignees: KOITO MANUFACTURING CO., LTD., TOKYO INSTITUTE OF TECHNOLOGY, NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITYInventors: Hisayoshi Daicho, Yu Shinomiya, Kiminori Enomoto, Hideo Hosono, Satoru Matsuishi, Hiroshi Sawa, Akitoshi Nakano
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Patent number: 11249201Abstract: A scintillator material includes a matrix phase and scintillator parts dispersed in the matrix phase. The scintillator parts contain fine particles of single crystal. According to the above aspect, since the scintillator parts containing the fine particles of single crystal are dispersed in the matrix phase, it is possible to reduce an influence from an environment.Type: GrantFiled: October 5, 2018Date of Patent: February 15, 2022Assignee: KOITO MANUFACTURING CO., LTD.Inventor: Hisayoshi Daicho
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Publication number: 20210257515Abstract: A semiconductor growth substrate includes: an r-plane of a sapphire as a main plane; and a plurality of convex shapes formed on the main plane, in which the convex shapes have a length of 2000 nm or less in a predetermined first direction among in-plane directions of the main plane, and heights of the convex shapes adjacent to each other are different.Type: ApplicationFiled: June 4, 2019Publication date: August 19, 2021Applicant: KOITO MANUFACTURING CO., LTD.Inventors: Hisayoshi DAICHO, Daiki JINNO
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Patent number: 10807903Abstract: A nanocomposite includes: a matrix phase; and a functional area disposed in the matrix phase. The functional area contains monocrystal fine particles.Type: GrantFiled: October 14, 2018Date of Patent: October 20, 2020Assignee: KOITO MANUFACTURING CO., LTD.Inventors: Takeshi Iwasaki, Hisayoshi Daicho, Yu Shinomiya
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Publication number: 20190382657Abstract: In a phosphor according to an aspect, an emission site has a perovskite crystal structure expressed by ABX3, in which A and B are each a cation and X is an anion, and an emission element is located at a B site serving as a body center of the perovskite crystal structure.Type: ApplicationFiled: August 27, 2019Publication date: December 19, 2019Applicants: KOITO MANUFACTURING CO., LTD., TOKYO INSTITUTE OF TECHNOLOGY, NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITYInventors: Hisayoshi DAICHO, Yu SHINOMIYA, Kiminori ENOMOTO, Hideo HOSONO, Satoru MATSUISHI, Hiroshi SAWA, Akitoshi NAKANO
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Patent number: 10370590Abstract: A phosphor is represented by the general formula aMIX·MII1-xMIMVO4:(Re)x where MI is at least one atomic element selected from the group consisting of K, Li, Na, Rb, Cs, Fr, Cu, and Ag, with K being essential; MII is at least one atomic element selected from the group consisting of Mg, Ca, Sr, Ba, Ra, Mn, Zn, Cd, and Sn; MV is at least one atomic element selected from the group consisting of P, V, Nb, Ta, As, Sb, and Bi; X is at least one halogen element, with F being essential; Re is at least one atomic element selected from the group consisting of rare earth elements, with Eu being essential; and a is in the range 0.6?a?1.4.Type: GrantFiled: August 26, 2016Date of Patent: August 6, 2019Assignees: KOITO MANUFACTURING CO., LTD., TOKYO INSTITUTE OF TECHNOLOGY, NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITYInventors: Hisayoshi Daicho, Yu Shinomiya, Kiminori Enomoto, Hideo Hosono, Satoru Matsuishi, Hiroshi Sawa, Akitoshi Nakano
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Publication number: 20190113635Abstract: A scintillator material includes a matrix phase and scintillator parts dispersed in the matrix phase. The scintillator parts contain fine particles of single crystal. According to the above aspect, since the scintillator parts containing the fine particles of single crystal are dispersed in the matrix phase, it is possible to reduce an influence from an environment.Type: ApplicationFiled: October 5, 2018Publication date: April 18, 2019Inventor: Hisayoshi DAICHO
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Patent number: 10208302Abstract: A composite material includes: an apatite crystal in the form of a tube; and a functional component accommodated in the apatite crystal tube and constituted by a material having physical properties different from those of the apatite crystal. The apatite crystal may be a monocrystal given by the general formula M25(PO4)3X, where M2 denotes at least one element selected from the group consisting of divalent alkali earth metals and Eu, and X denotes at least one element or molecule selected from the group consisting of halogens and OH.Type: GrantFiled: December 21, 2015Date of Patent: February 19, 2019Assignee: KOITO MANUFACTURING CO., LTD.Inventors: Kiminori Enomoto, Hisayoshi Daicho, Yu Shinomiya
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Publication number: 20190047903Abstract: A nanocomposite includes: a matrix phase; and a functional area disposed in the matrix phase. The functional area contains monocrystal fine particles.Type: ApplicationFiled: October 14, 2018Publication date: February 14, 2019Applicant: KOITO MANUFACTURING CO., LTD.Inventors: Takeshi IWASAKI, Hisayoshi DAICHO, Yu SHINOMIYA
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Publication number: 20190032886Abstract: A fluorescent member includes: a wavelength converter including an incidence part on which a light of a light source is incident and an output part from which a converted light subjected to wavelength conversion as a result of excitation by an incident light is output; and a reflecting part provided in at least a portion of a surface of the wavelength converter. The wavelength converter is comprised of a material whereby a degree of scattering of the light of the light source incident via the incidence part and traveling toward the output part is smaller than in the case of a polycrystalline material.Type: ApplicationFiled: September 17, 2018Publication date: January 31, 2019Applicant: KOITO MANUFACTURING CO., LTD.Inventors: Hisayoshi DAICHO, Yu SHINOMIYA
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Patent number: 10132459Abstract: A lamp includes a plurality of semiconductor light-emitting elements arrayed linearly, an aluminum substrate on which the plurality of light-emitting elements are mounted, and a linear light wavelength conversion member disposed separated from light-emitting surfaces of the plurality of light-emitting elements. The aluminum substrate includes a circuit formed such as to be able to switch on/off the plurality of light-emitting elements, as grouped into a plurality of sets, on a per-set basis in which the sets are composed of either one or a plurality of the light-emitting elements.Type: GrantFiled: January 4, 2017Date of Patent: November 20, 2018Assignee: KOITO MANUFACTURING CO., LTD.Inventors: Hisayoshi Daicho, Toshio Yagi, Shogo Sugimori, Yu Shinomiya
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Patent number: 9795896Abstract: An adsorption method adsorbs a substance by using a tube-shaped apatite crystal. The apatite crystal may be a monocrystal given by a general formula M25(PO4)3X (M2 denotes at least one element selected from the group consisting of divalent alkali earth metal and Eu, and X denotes at least one element or molecule selected from the group consisting of halogen element and OH). The outer form of the apatite crystal may be a hexagonal prism in which the aperture of a hole formed on a top surface or bottom surface of the hexagonal prism may be hexagonal.Type: GrantFiled: March 16, 2015Date of Patent: October 24, 2017Assignee: KOITO MANUFACTURING CO., LTD.Inventors: Kiminori Enomoto, Hisayoshi Daicho, Yu Shinomiya
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Publication number: 20170113605Abstract: A lamp includes a plurality of semiconductor light-emitting elements arrayed linearly, an aluminum substrate on which the plurality of light-emitting elements are mounted, and a linear light wavelength conversion member disposed separated from light-emitting surfaces of the plurality of light-emitting elements. The aluminum substrate includes a circuit formed such as to be able to switch on/off the plurality of light-emitting elements, as grouped into a plurality of sets, on a per-set basis in which the sets are composed of either one or a plurality of the light-emitting elements.Type: ApplicationFiled: January 4, 2017Publication date: April 27, 2017Applicant: Koito Manufacturing Co., Ltd.Inventors: Hisayoshi DAICHO, Toshio YAGI, Shogo SUGIMORI, Yu SHINOMIYA
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Patent number: 9627362Abstract: An illumination device includes a light-emitting device and a diffusion member. The light-emitting device has a plurality of light-emitting elements that emit light having a peak wavelength in a wavelength region of 380 to 420 nm, a first phosphor that emits visible light having a peak wavelength in a wavelength region of 560 to 600 nm, a second phosphor that is excited by ultraviolet ray or short-wavelength visible light and emits visible light in complementary color relationship with the visible light emitted by the first phosphor, and a light-transmitting member that covers the plurality of light-emitting elements and contains the first phosphor and the second phosphor dispersed therein. The diffusion member diffuses at least a part of the light emitting from the light-emitting device.Type: GrantFiled: November 8, 2012Date of Patent: April 18, 2017Assignee: KOITO MANUFACTURING CO., LTD.Inventor: Hisayoshi Daicho
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Publication number: 20170058198Abstract: A phosphor is represented by the general formula aMIX.MII1-xMIMVO4:(Re)x where MI is at least one atomic element selected from the group consisting of K, Li, Na, Rb, Cs, Fr, Cu, and Ag, with K being essential; MII is at least one atomic element selected from the group consisting of Mg, Ca, Sr, Ba, Ra, Mn, Zn, Cd, and Sn; MV is at least one atomic element selected from the group consisting of P, V, Nb, Ta, As, Sb, and Bi; X is at least one halogen element, with F being essential; Re is at least one atomic element selected from the group consisting of rare earth elements, with Eu being essential; and a is in the range 0.6?a?1.4.Type: ApplicationFiled: August 26, 2016Publication date: March 2, 2017Applicants: Koito Manufacturing Co., Ltd., Tokyo Institute of Technology, National University Corporation Nagoya UniversityInventors: Hisayoshi DAICHO, Yu SHINOMIYA, Kiminori ENOMOTO, Hideo HOSONO, Satoru MATSUISHI, Hiroshi SAWA, Akitoshi NAKANO
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Patent number: 9406657Abstract: A semiconductor light-emitting device has a substrate, one or more semiconductor light-emitting elements provided on the substrate, and that emit light having a peak wavelength in a 380 nm to 480 nm wavelength region, and a molded member covering the semiconductor light-emitting element, and containing a phosphor that emits visible light by being excited by the emitted light from the semiconductor light-emitting element. The molded member is formed so that index A=H/(s/n) satisfies 0.3?A?6, where H is the height [mm] of the molded member from the substrate, s is the square root [mm] of the contact area between the substrate and the molded member, and n is the number of the semiconductor light-emitting elements covered with the molded member.Type: GrantFiled: January 22, 2013Date of Patent: August 2, 2016Assignee: KOITO MANUFACTURING CO., LTD.Inventors: Shogo Sugimori, Osamu Kuboyama, Hisayoshi Daicho
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Patent number: 9371231Abstract: An apatite crystal is a single crystal expressed by a general formula (M2)5(PO4)3X. In this formula, M2 indicates at least one type of element selected from the group consisting of bivalent alkaline-earth metals and Eu, and X indicates at least one type of element or molecule selected from the group consisting of halogen elements and OH. And the single crystal is of a tubular shape. The outer shape of the apatite may be a hexagonal prism. The shape of an opening of a hole formed in the upper surface or lower surface of the hexagonal prism may be a hexagon.Type: GrantFiled: September 26, 2014Date of Patent: June 21, 2016Assignee: KOITO MANUFACTURING CO., LTD.Inventors: Kiminori Enomoto, Hisayoshi Daicho, Yu Shinomiya