Patents by Inventor Maki Minamoto
Maki Minamoto 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: 8017037Abstract: A fluorescent substance capable of remarkably increasing the luminous intensity of a I-III-VI2 chalcopyrite type compound having a large band gap among chalcopyrite type compounds with manganese as luminescence centers, and being favorably used for a lighting device using a light emitting diode, a light emitting element of a display device or the like, a light emitting device such as fluorescent lamps such as a cold cathode fluorescent lamp and a hot cathode fluorescent lamp, as a fluorescent substance generating fluorescence by ultraviolet excitation, is provided. The fluorescent substance is expressed by composition formula (1) Cu(Al1-xGax)(S1-ySey)2:Mn,Si??(1) (wherein x represents a number satisfying 0?x?0.4, and y represents a number satisfying 0?y?0.4), including manganese as a luminescence center atom.Type: GrantFiled: March 25, 2008Date of Patent: September 13, 2011Assignees: NEC Lighting, Ltd, Tottori UniversityInventors: Maki Minamoto, Koutoku Ohmi, Kazuaki Tsuji
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Patent number: 7997949Abstract: An external-electrode discharge lamp has a light-permeable, electrically insulative outer casing having a closed hollow space defined therein. A discharge medium is sealed in the outer casing. An external electrode is disposed on an outer surface of the outer casing for causing a dielectric barrier discharge in the discharge medium. The external electrode comprises a plate of an electrically conductive material and is brazed to the outer surface of the outer casing by a brazing material disposed fully circumferentially on the outer surface of the outer casing.Type: GrantFiled: September 10, 2009Date of Patent: August 16, 2011Assignee: NEC CorporationInventors: Maki Minamoto, Seiichiro Fujioka
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Patent number: 7963985Abstract: An instrument for ultraviolet irradiation includes a plurality of light-shielding filters each having different transmittances for ultraviolet radiation emitted from a light source for irradiating the skin of a patient with ultraviolet radiation, and a support member for supporting the light-shielding filters.Type: GrantFiled: September 20, 2005Date of Patent: June 21, 2011Assignees: NEC Lighting, Ltd, Public University Corporation Nagoya City UniversityInventors: Maki Minamoto, Akimichi Morita
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Publication number: 20100056011Abstract: An external-electrode discharge lamp has a light-permeable, electrically insulative outer casing having a closed hollow space defined therein. A discharge medium is sealed in the outer casing. An external electrode is disposed on an outer surface of the outer casing for causing a dielectric barrier discharge in the discharge medium. The external electrode comprises a plate of an electrically conductive material and is brazed to the outer surface of the outer casing by a brazing material disposed fully circumferentially on the outer surface of the outer casing.Type: ApplicationFiled: September 10, 2009Publication date: March 4, 2010Applicant: NEC CorporationInventors: Maki Minamoto, Seiichiro Fujioka
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Patent number: 7605541Abstract: An external-electrode discharge lamp has a light-permeable, electrically insulative outer casing having a closed hollow space defined therein. A discharge medium is sealed in the outer casing. An external electrode is disposed on an outer surface of the outer casing for causing a dielectric barrier discharge in the discharge medium. The external electrode comprises a plate of an electrically conductive material and is brazed to the outer surface of the outer casing by a brazing material disposed fully circumferentially on the outer surface of the outer casing.Type: GrantFiled: November 23, 2004Date of Patent: October 20, 2009Assignee: NEC CorporationInventors: Maki Minamoto, Seiichiro Fujioka
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Publication number: 20090051262Abstract: A fluorescent substance capable of remarkably increasing the luminous intensity of a I-III-VI2 chalcopyrite type compound having a large band gap among chalcopyrite type compounds with manganese as luminescence centers, and being favorably used for a lighting device using a light emitting diode, a light emitting element of a display device or the like, a light emitting device such as fluorescent lamps such as a cold cathode fluorescent lamp and a hot cathode fluorescent lamp, as a fluorescent substance generating fluorescence by ultraviolet excitation, is provided. The fluorescent substance is expressed by composition formula (1) Cu(Al1-xGax)(S1-ySey)2:Mn,Si??(1) (wherein x represents a number satisfying 0?x?0.4, and y represents a number satisfying 0?y?0.4), including manganese as a luminescence center atom.Type: ApplicationFiled: March 25, 2008Publication date: February 26, 2009Applicants: NEC LIGHTING, LTD., TOTTORI UNIVERSITYInventors: Maki MINAMOTO, Koutoku OHMI, Kazuaki TSUJI
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Publication number: 20080180018Abstract: The present invention has an object to provide a fluorescent substance containing glass sheet which is suppressed attenuation of intensity of wavelength converted light emitted by a sulfide fluorescent substance, able to increase a life of the light emitting device, and does not bring about environmental pollution by lead, its manufacturing method and a light-emitting device using this. A fluorescent substance containing glass sheet formed by mixing an oxide-coated fluorescent substance particle with glass powder that does not substantially include lead, and sintering them, the oxide-coated fluorescent substance particle having been produced by coating a surface of a sulfide fluorescent substance particle, which is excited by light emission from a light-emitting element and which emits wavelength converted light, with an oxide, wherein attenuation of intensity of said wavelength converted light emitted by said sulfide fluorescent substance particle is suppressed by a forming process.Type: ApplicationFiled: October 16, 2007Publication date: July 31, 2008Applicant: NEC LIGHTING, LTD.Inventors: Maki MINAMOTO, Ryo Yoshimatsu
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Patent number: 7241306Abstract: A narrow-band UV-B phototherapeutic device includes: a light source unit that includes a fluorescent lamp of planar structure that is the ultraviolet light source for emitting narrow-band UV-B; a power supply for causing the fluorescent lamp to emit light; and a control unit for controlling the light emission of the fluorescent lamp.Type: GrantFiled: May 28, 2004Date of Patent: July 10, 2007Assignee: NEC CorporationInventors: Maki Minamoto, Yosuke Nishikage, Akimichi Morita, Hisashi Yoshida
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Patent number: 7215080Abstract: In an external electrode type discharge lamp, a gadolinium oxide film obtained by baking solution containing at least one of gadolinium octate and gadolinium propionate is provided in a portion including at least a portion corresponding to an external electrode.Type: GrantFiled: March 4, 2005Date of Patent: May 8, 2007Assignee: NEC CorporationInventors: Maki Minamoto, Seiichiro Fujioka
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Publication number: 20060195166Abstract: An instrument for ultraviolet irradiation includes a plurality of light-shielding filters each having different transmittances for ultraviolet radiation emitted from a light source for irradiating the skin of a patient with ultraviolet radiation, and a support member for supporting the light-shielding filters.Type: ApplicationFiled: September 20, 2005Publication date: August 31, 2006Inventors: Maki Minamoto, Akimichi Morita
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Publication number: 20050194903Abstract: In an external electrode type discharge lamp, a gadolinium oxide film obtained by baking solution containing at least one of gadolinium octate and gadolinium propionate is provided in a portion including at least a portion corresponding to an external electrode.Type: ApplicationFiled: March 4, 2005Publication date: September 8, 2005Applicant: NEC CORPORATIONInventors: Maki Minamoto, Seiichiro Fujioka
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Publication number: 20050189879Abstract: An external-electrode discharge lamp has a light-permeable, electrically insulative outer casing having a closed hollow space defined therein. A discharge medium is sealed in the outer casing. An external electrode is disposed on an outer surface of the outer casing for causing a dielectric barrier discharge in the discharge medium. The external electrode comprises a plate of an electrically conductive material and is brazed to the outer surface of the outer casing by a brazing material disposed fully circumferentially on the outer surface of the outer casing.Type: ApplicationFiled: November 23, 2004Publication date: September 1, 2005Inventors: Maki Minamoto, Seiichiro Fujioka
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Publication number: 20050010249Abstract: A narrow-band UV-B phototherapeutic device includes: a light source unit that includes a fluorescent lamp of planar structure that is the ultraviolet light source for emitting narrow-band UV-B; a power supply for causing the fluorescent lamp to emit light; and a control unit for controlling the light emission of the fluorescent lamp.Type: ApplicationFiled: May 28, 2004Publication date: January 13, 2005Inventors: Maki Minamoto, Yosuke Nishikage, Akimichi Morita, Hisashi Yoshida
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Patent number: 6731057Abstract: A phosphor represented by the formula (1−x)CaO.EU(O).yMgO.nSiO2, wherein x, y and n represent number of moles, respectively, provides increased initial luminous intensity and exhibits superior sustainability of luminous intensity over long periods of use in a fluorescent lamp including the above phosphor.Type: GrantFiled: March 21, 2002Date of Patent: May 4, 2004Assignee: NEC CorporationInventors: Hisashi Yoshida, Maki Minamoto, Kazuya Ito, Yosuke Nishikage
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Publication number: 20020190634Abstract: A phosphor represented by the formula (1−x)CaO·xEu(O)·yMgO·nSiO2, wherein x, y and n represent number of moles, respectively. A fluorescent lamp comprising the above phosphor. The phosphor has stronger luminous intensity and less luminous intensity reduction after a long lighting hours.Type: ApplicationFiled: March 21, 2002Publication date: December 19, 2002Inventors: Hisashi Yoshida, Maki Minamoto, Kazuya Ito, Yosuke Nishikage
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Publication number: 20020027412Abstract: A fluoride-based fluorescent material designated by a composition formula of MFn:R, wherein M is at least one element selected from the group consisting of rare earth elements, Al and Bi, alkaline earth metals, and alkaline metals, and R is a rare-earth-based activator including at least either Tb or Tb and Ce and n=1, 2 or 3. The fluoride-based fluorescent materials efficiently emit white-light of a luminescent peak at 543 nm.Type: ApplicationFiled: July 11, 2001Publication date: March 7, 2002Applicant: NEC CORPORATIONInventors: Hisashi Yoshida, Maki Minamoto, Masato Hayashi, Shiro Sakuragi, Takeshi Hirai
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Publication number: 20020017857Abstract: A flat-type light-emitting device having an approximately even distribution of the light intensity is provided without luminance degradation. This device comprises (a) an envelope having an inner space and an inner surface; the inner space being filled with a discharge medium; (b) a phosphor layer formed in the inner space of the envelope; (c) a first electrode formed on the inner surface of the envelope; the first electrode including linear parts; each of the linear parts having branches apart from each other at a first gap; and (d) a second electrode formed on the inner surface of the envelope adjacent to the first electrode; the second electrode including linear parts; each of the linear parts having branches apart from each other at a second gap. The linear parts of the first electrode and the linear parts of the second electrode are arranged alternately in the direction.Type: ApplicationFiled: July 26, 2001Publication date: February 14, 2002Applicant: NEC CorporationInventors: Masafumi Hashimoto, Maki Minamoto, Hisashi Yoshida
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Patent number: 5586000Abstract: The present invention provides a solid electrolytic capacitor comprising a metal having a dielectric oxide film formed thereon, a conductive polymer compound layer formed on said dielectric oxide film, a conductive paste layer formed on said conductive polymer compound layer, a molded resin sheathing having all of the above members buried therein, and a pair of electrodes connected to said metal and said conductive paste layer, respectively, in which capacitor an antioxidant is scattered, in the form of particles, in at least one of said conductive polymer compound layer, said conductive paste layer and the interface between the conductive polymer compound layer and the conductive paste layer; and a process for production of said capacitor.Type: GrantFiled: December 21, 1994Date of Patent: December 17, 1996Assignee: NEC CorporationInventors: Koji Sakata, Maki Minamoto, Takashi Fukaumi, Toshihiko Nishiyama, Satoshi Arai, Hiromichi Taniguchi