Patents by Inventor Shunsuke Murai
Shunsuke Murai 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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Patent number: 11060699Abstract: An illumination device includes a light source configured to generate primary light having a Gaussian intensity distribution, an intensity-distribution converting member configured to convert the primary light to generate secondary light having a top-hat type intensity distribution, a wavelength converter configured to receive the secondary light from a light-receiving surface, generate tertiary light including the secondary light and wavelength-converted light in which a wavelength of the secondary light has been converted, and emit the tertiary light from an emission surface, and an antenna array having a plurality of optical antennas formed on the emission surface of the wavelength converter and arranged at a period larger than an optical wavelength of the secondary light in the wavelength converter.Type: GrantFiled: March 2, 2018Date of Patent: July 13, 2021Assignees: KYOTO UNIVERSITY, STANLEY ELECTRIC CO., LTD.Inventors: Shunsuke Murai, Yusuke Yokobayashi, Masaru Kuramoto, Keijiro Takashima, Syousaku Kubo
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Patent number: 10907773Abstract: A wavelength conversion device includes: a wavelength conversion element having a phosphor plate that converts the wavelength of incident light upon a light incident surface to generate wavelength-converted light, and emits the wavelength-converted light from a light emission surface; an antenna array constituted of a plurality of optical antennas that are periodically arranged on the light emission surface of the phosphor plate; and a recessed structure including at least one recessed portion provided in the light emission surface of the phosphor plate.Type: GrantFiled: July 12, 2019Date of Patent: February 2, 2021Assignees: STANLEY ELECTRIC CO., LTD., KYOTO UNIVERSITYInventors: Shunsuke Murai, Yusuke Yokobayashi, Yasuyuki Kawakami, Keijiro Takashima, Syousaku Kubo, Yosuke Maemura
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Publication number: 20200386386Abstract: An illumination device includes a light source configured to generate primary light having a Gaussian intensity distribution, an intensity-distribution converting member configured to convert the primary light to generate secondary light having a top-hat type intensity distribution, a wavelength converter configured to receive the secondary light from a light-receiving surface, generate tertiary light including the secondary light and wavelength-converted light in which a wavelength of the secondary light has been converted, and emit the tertiary light from an emission surface, and an antenna array having a plurality of optical antennas formed on the emission surface of the wavelength converter and arranged at a period larger than an optical wavelength of the secondary light in the wavelength converter.Type: ApplicationFiled: March 2, 2018Publication date: December 10, 2020Applicants: KYOTO UNIVERSITY, STANLEY ELECTRIC CO., LTD.Inventors: Shunsuke MURAI, Yusuke YOKOBAYASHI, Masaru KURAMOTO, Keijiro TAKASHIMA, Syousaku KUBO
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Patent number: 10732328Abstract: A wavelength conversion apparatus includes a wavelength conversion member that has an incident surface and an emitting surface and generates a wavelength-converted light by converting the wavelength of incident light that is incident on the incident surface and emits the wavelength-converted light from the emitting surface; and an antenna array including a plurality of antennas that are formed on the wavelength conversion member and arranged at a pitch P, which is equal to the approximate optical wavelength of the wavelength-converted light in the wavelength conversion member.Type: GrantFiled: July 21, 2017Date of Patent: August 4, 2020Assignees: STANLEY ELECTRIC CO., LTD., KYOTO UNIVERSITYInventors: Shunsuke Murai, Yusuke Yokobayashi
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Publication number: 20200025341Abstract: A wavelength conversion device includes: a wavelength conversion element having a phosphor plate that converts the wavelength of incident light upon a light incident surface to generate wavelength-converted light, and emits the wavelength-converted light from a light emission surface; an antenna array constituted of a plurality of optical antennas that are periodically arranged on the light emission surface of the phosphor plate; and a recessed structure including at least one recessed portion provided in the light emission surface of the phosphor plate.Type: ApplicationFiled: July 12, 2019Publication date: January 23, 2020Applicants: KYOTO UNIVERSITY, STANLEY ELECTRIC CO., LTD.Inventors: Shunsuke MURAI, Yusuke YOKOBAYASHI, Yasuyuki KAWAKAMI, Keijiro TAKASHIMA, Syousaku KUBO, Yosuke MAEMURA
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Patent number: 9982850Abstract: Embodiments of the invention include a semiconductor light emitting device for emitting a first light at a first wavelength and a wavelength conversion medium arranged to convert at least part of the first light into a second light at a second wavelength. The wavelength conversion medium is disposed between a periodic antenna array and the semiconductor light emitting device. The periodic antenna array includes a plurality of antennas. The periodic antenna array supports surface lattice resonances arising from diffractive coupling of localized surface plasmon resonances in at least one of the antennas.Type: GrantFiled: June 19, 2017Date of Patent: May 29, 2018Assignee: Lumileds LLCInventors: Said Rahimzadeh Kalaleh Rodriguez, Jaime Gomez Rivas, Abraham Rudolf Balkenende, Marcus Antonius Verschuuren, Gabriel Sebastian Lozano Barbero, Shunsuke Murai
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Publication number: 20180024279Abstract: A wavelength conversion apparatus includes a wavelength conversion member that has an incident surface and an emitting surface and generates a wavelength-converted light by converting the wavelength of incident light that is incident on the incident surface and emits the wavelength-converted light from the emitting surface; and an antenna array including a plurality of antennas that are formed on the wavelength conversion member and arranged at a pitch P, which is equal to the approximate optical wavelength of the wavelength-converted light in the wavelength conversion member.Type: ApplicationFiled: July 21, 2017Publication date: January 25, 2018Applicants: KYOTO UNIVERSITY, STANLEY ELECTRIC CO., LTD.Inventors: Shunsuke MURAI, Yusuke YOKOBAYASHI
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Publication number: 20170288098Abstract: Embodiments of the invention include a semiconductor light emitting device for emitting a first light at a first wavelength and a wavelength conversion medium arranged to convert at least part of the first light into a second light at a second wavelength. The wavelength conversion medium is disposed between a periodic antenna array and the semiconductor light emitting device. The periodic antenna array includes a plurality of antennas. The periodic antenna array supports surface lattice resonances arising from diffractive coupling of localized surface plasmon resonances in at least one of the antennas.Type: ApplicationFiled: June 19, 2017Publication date: October 5, 2017Inventors: Said Rahimzadeh Kalaleh Rodriguez, Jaime Gomez Rivas, Abraham Rudolf Balkenende, Marcus Antonius Verschuuren, Gabriel Sebastian Lozano Barbero, Shunsuke Murai
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Publication number: 20160363274Abstract: Embodiments of the invention include a semiconductor light emitting device for emitting a first light at a first wavelength and a wavelength conversion medium arranged to convert at least part of the first light into a second light at a second wavelength. The wavelength conversion medium is disposed between a periodic antenna array and the semiconductor light emitting device. The periodic antenna array includes a plurality of antennas. The periodic antenna array supports surface lattice resonances arising from diffractive coupling of localized surface plasmon resonances in at least one of the antennas.Type: ApplicationFiled: July 22, 2016Publication date: December 15, 2016Inventors: Said Rahimzadeh Kalaleh Rodriguez, Jaime Gomez Rivas, Abraham Rudolf Balkenende, Marcus Antonius Verschuuren, Gabriel Sebastian Lozano Barbero, Shunsuke Murai
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Patent number: 9419280Abstract: A cathode active material of the present invention is a cathode active material having a composition represented by General Formula (1) below, LiFe1?xMxP1?ySiyO4??(1), where: an average valence of Fe is +2 or more; M is an element having a valence of +2 or more and is at least one type of element selected from the group consisting of Zr, Sn, Y, and Al; the valence of M is different from the average valence of Fe; 0<x?0.5; and y=x×({valence of M}?2)+(1?x)×({average valence of Fe}?2). This provides a cathode active material that not only excels in terms of safety and cost but also can provide a long-life battery.Type: GrantFiled: December 18, 2014Date of Patent: August 16, 2016Assignee: SHARP KABUSHIKI KAISHAInventors: Koji Ohira, Motoaki Nishijima, Toshitsugu Sueki, Shogo Esaki, Isao Tanaka, Yukinori Koyama, Katsuhisa Tanaka, Koji Fujita, Shunsuke Murai
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Patent number: 9416927Abstract: Embodiments of the invention include a semiconductor light emitting device for emitting a first light at a first wavelength and a wavelength conversion medium arranged to convert at least part of the first light into a second light at a second wavelength. The wavelength conversion medium is disposed between a periodic antenna array and the semiconductor light emitting device. The periodic antenna array includes a plurality of antennas. The periodic antenna array supports surface lattice resonances arising from diffractive coupling of localized surface plasmon resonances in at least one of the antennas.Type: GrantFiled: September 14, 2015Date of Patent: August 16, 2016Assignee: Koninklijke Philips N.V.Inventors: Said Rahimzadeh Kalaleh Rodriguez, Jaime Gomez Rivas, Abraham Rudolf Balkenende, Marcus Antonius Verschuuren, Gabriel Sebastian Lozano Barbero, Shunsuke Murai
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Patent number: 9373844Abstract: A positive electrode active substance including a lithium-containing metal oxide represented by the following general formula (1): LiFe1-xMxP1-ySiyO4??(1) wherein M represents an element selected from Sn, Zr, Y, and Al; 0<x<1; and 0<y<1, wherein the lithium-containing metal oxide has a lattice constant and a half value width of a diffraction peak of a (011) plane.Type: GrantFiled: November 14, 2013Date of Patent: June 21, 2016Assignee: SHARP KABUSHIKI KAISHAInventors: Koji Ohira, Motoaki Nishijima, Toshitsugu Sueki, Shougo Esaki, Isao Tanaka, Yukinori Koyama, Katsuhisa Tanaka, Koji Fujita, Shunsuke Murai
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Patent number: 9350022Abstract: A cathode active material of the present invention is a cathode active material having a composition represented by General Formula (1) below, LiFe1-xMxP1-ySiyO4??(1), where: an average valence of Fe is +2 or more; M is an element having a valence of +2 or more and is at least one type of element selected from the group consisting of Zr, Sn, Y, and Al; the valence of M is different from the average valence of Fe; 0<x?0.5; and y=x×({valence of M}?2)+(1?x)×({average valence of Fe}?2). This provides a cathode active material that not only excels in terms of safety and cost but also can provide a long-life battery.Type: GrantFiled: December 18, 2014Date of Patent: May 24, 2016Assignee: SHARP KABUSHIKI KAISHAInventors: Koji Ohira, Motoaki Nishijima, Toshitsugu Sueki, Shogo Esaki, Isao Tanaka, Yukinori Koyama, Katsuhisa Tanaka, Koji Fujita, Shunsuke Murai
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Patent number: 9337489Abstract: A cathode active material of the present invention is a cathode active material having a composition represented by General Formula (1) below, LiFe1?xMxP1?ySiyO4??(1), where: an average valence of Fe is +2 or more; M is an element having a valence of +2 or more and is at least one type of element selected from the group consisting of Zr, Sn, Y, and Al; the valence of M is different from the average valence of Fe; 0<x?0.5; and y=x×({valence of M}?2)+(1?x)×({average valence of Fe}?2). This provides a cathode active material that not only excels in terms of safety and cost but also can provide a long-life battery.Type: GrantFiled: February 23, 2015Date of Patent: May 10, 2016Assignee: SHARP KABUSHIKI KAISHAInventors: Koji Ohira, Motoaki Nishijima, Toshitsugu Sueki, Shogo Esaki, Isao Tanaka, Yukinori Koyama, Katsuhisa Tanaka, Koji Fujita, Shunsuke Murai
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Positive electrode active material, positive electrode, and nonaqueous-electrolyte secondary battery
Patent number: 9293234Abstract: Provided is a positive electrode active material giving nonaqueous-electrolyte secondary batteries superior in cycle characteristics. The positive electrode active material according to the present invention includes a lithium-containing composite metal oxide having the composition represented by the following General Formula (1): LizFe1-xMxP1-ySiyO4??(1) (wherein M is at least one metal element selected from Zr, Sn, Y, and Al, 0.05<x<1, and 0.05<y<1), characterized in that: the positive electrode active material is in the single crystalline phase of the lithium-containing composite oxide represented by General Formula (1) when 1>z>0.9 to 0.75 or 0.25 to 0.1>z>0; the positive electrode active material has two crystalline phases of the lithium-containing composite oxides represented by the following General Formulae (2) and (3) when 0.9 to 0.75>z>0.25 to 0.1: LiaFe1-xMxP1-ySiyO4??(2) (wherein 0.75 to 0.9?a?1.00, 0.05<x<1, and 0.Type: GrantFiled: June 16, 2011Date of Patent: March 22, 2016Assignee: SHARP KABUSHIKI KAISHAInventors: Motoaki Nishijima, Koji Ohira, Toshitsugu Sueki, Shougo Esaki, Isao Tanaka, Yukinori Koyama, Katsuhisa Tanaka, Koji Fujita, Shunsuke Murai -
Publication number: 20160010813Abstract: Proposed is an illumination device (100), comprising a light source (110) such as an LED or a laser diode, a wavelength conversion medium (120) such as a phosphor, and a periodic antenna array (300) made of a highly polarisable material such as a metal. The light source emits primary wavelength light that at least partially is converted in secondary wavelength light by the wavelength conversion medium. The periodic antenna array is positioned in close proximity to the wavelength conversion medium and functions to enhance the efficiency of the absorption and/or emission processes in the wavelength conversion medium through the coupling of the incident primary wavelength light or the emitted secondary light to surface lattice resonances that arise from the diffractive coupling of localized surface plasmon polaritons in the individual antennas of the array.Type: ApplicationFiled: September 14, 2015Publication date: January 14, 2016Inventors: SAID RAHIMZADEH KALALEH RODRIGUEZ, JAIME GOMEZ RIVAS, ABRAHAM RUDOLF BALKENENDE, MARCUS ANTONIUS VERSCHUUREN, GABRIEL SEBASTIAN LOZANO BARBERO, SHUNSUKE MURAI
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Patent number: 9157605Abstract: Proposed is an illumination device (100), comprising a light source (110) such as an LED or a laser diode, a wavelength conversion medium (120) such as a phosphor, and a periodic antenna array (300) made of a highly polarisable material such as a metal. The light source emits primary wavelength light that at least partially is converted in secondary wavelength light by the wavelength conversion medium. The periodic antenna array is positioned in close proximity to the wavelength conversion medium and functions to enhance the efficiency of the absorption and/or emission processes in the wavelength conversion medium through the coupling of the incident primary wavelength light or the emitted secondary light to surface lattice resonances that arise from the diffractive coupling of localized surface plasmon polaritons in the individual antennas of the array.Type: GrantFiled: January 16, 2012Date of Patent: October 13, 2015Assignee: Koninklijke Philips N.V.Inventors: Said Rahimzadeh Kalaeh Rodriguez, Jaime Gomez Rivas, Abraham Rudolf Balkenende, Marcus Antonius Verschuuren, Gabriel Sebastian Lozano Barbero, Shunsuke Murai
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Publication number: 20150171429Abstract: A cathode active material of the present invention is a cathode active material having a composition represented by General Formula (1) below, LiFe1-xMxP1-ySiyO4 ??(1), where: an average valence of Fe is +2 or more; M is an element having a valence of +2 or more and is at least one type of element selected from the group consisting of Zr, Sn, Y, and Al; the valence of M is different from the average valence of Fe; 0<x?0.5; and y=x×({valence of M}?2)+(1?x)×({average valence of Fe}?2). This provides a cathode active material that not only excels in terms of safety and cost but also can provide a long-life battery.Type: ApplicationFiled: February 23, 2015Publication date: June 18, 2015Inventors: Koji OHIRA, Motoaki NISHIJIMA, Toshitsugu SUEKI, Shogo ESAKI, Isao TANAKA, Yukinori KOYAMA, Katsuhisa TANAKA, Koji FUJITA, Shunsuke MURAI
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Patent number: 9017876Abstract: A method of producing a positive electrode active material, comprising the steps of: preparing a solution by dissolving, in a solvent, respective predetermined amounts of a lithium source, a M source, a phosphorus source and a X source necessary for forming a positive electrode active material represented by the following general formula (1) having an olivine structure; gelating the obtained solution by addition of a cyclic ether; and calcinating the generated gel to obtain a carbon-coated lithium-containing composite oxide, wherein the positive electrode active material is represented by the general formula (1): LixMyP1-zXzO4??(1) wherein M is at least one element selected from the group consisting of Fe, Ni, Mn, Zr, Sn, Al and Y, X is at least one selected from the group consisting of Si and Al, and 0<x?2, 0.8?y?1.2, 0?z?1.Type: GrantFiled: October 18, 2011Date of Patent: April 28, 2015Assignee: Sharp Kabushiki KaishaInventors: Toshitsugu Sueki, Motoaki Nishijima, Koji Ohira, Shogo Esaki, Isao Tanaka, Yukinori Koyama, Katsuhisa Tanaka, Koji Fujita, Shunsuke Murai
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Publication number: 20150104709Abstract: A cathode active material of the present invention is a cathode active material having a composition represented by General Formula (1) below, LiFe1-xMxP1-ySiyO4??(1), where: an average valence of Fe is +2 or more; M is an element having a valence of +2 or more and is at least one type of element selected from the group consisting of Zr, Sn, Y, and Al; the valence of M is different from the average valence of Fe; 0<x?0.5; and y=x×({valence of M}?2)+(1?x)×({average valence of Fe}?2). This provides a cathode active material that not only excels in terms of safety and cost but also can provide a long-life battery.Type: ApplicationFiled: December 18, 2014Publication date: April 16, 2015Inventors: Koji OHIRA, Motoaki NISHIJIMA, Toshitsugu SUEKI, Shogo ESAKI, Isao TANAKA, Yukinori KOYAMA, Katsuhisa TANAKA, Koji FUJITA, Shunsuke MURAI