Patents Assigned to Independent Administrative Institution National Institute for Materials Science
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Patent number: 9187339Abstract: Disclosed is an organic dispersion comprising a flaky titanium oxide particle having a high crystallinity and high light permeability contained in an organic solvent. The dispersion can be prepared by a method comprising preparing an aqueous dispersion of a flaky titanium oxide particle containing an organic cation, centrifuging the aqueous dispersion to produce a precipitate, and adding the precipitate to an organic solvent, or a method comprising lyophilizing the aqueous dispersion to produce a lyophilized material and mixing the lyophilized material to an organic solvent. When the organic dispersion is used, it becomes possible to form a film comprising a monolayer of a titanium oxide nanosheet densely arranged therein by such a simple manner that the dispersion is coated on a base material and drying the dispersion. The film thus produced has a photocatalytic activity and a super-hydrophilic property.Type: GrantFiled: September 4, 2008Date of Patent: November 17, 2015Assignees: ISHIHARA SANGYO KAISHA, LTD., INDEPENDENT ADMINISTRATIVE INSTITUTION NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Takayoshi Sasaki, Yasuo Ebina, Hirofumi Taniguchi, Yusuke Uesusuki
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Patent number: 8928005Abstract: A semiconductor light-emitting device that is high in luminous efficiency and that emits light which is high in color rendering property includes a semiconductor light-emitting element that emits blue light; a green fluorescent substance that absorbs the blue light and emits green light; and an orange fluorescent substance that absorbs the blue light and emits orange light, fluorescence emitted by the green fluorescent substance and the orange fluorescent substance having an emission spectrum that has a peak wavelength of not less than 540 nm and not more than 565 nm and that satisfies the relation of 0.70>PI(90)/PI(MAX)>0.55, where PI(MAX) represents an emission intensity at the peak wavelength, and PI(90) represents an emission intensity at a wavelength 90 nm longer than the peak wavelength.Type: GrantFiled: July 2, 2010Date of Patent: January 6, 2015Assignees: Sharp Kabushiki Kaisha, Independent Administrative Institution, National Institute for Materials ScienceInventors: Kenichi Yoshimura, Kohsei Takahashi, Hiroshi Fukunaga, Naoto Hirosaki
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Patent number: 8703019Abstract: A phosphor which emits light having high brightness, serves as an excellent orange or red phosphor whose light brightness is less decreased when exposed to an excitation source contains a crystal phase having the chemical composition expressed by the general formula [1]: (1?a?b)(Ln?pMII?1?pMIII?MIV?N3).a(MIV?(3n+2)/4NnO).b(AMIV?2N3)??[1] wherein Ln? represents a metal element selected from the group consisting of lanthanoids, Mn, and Ti; MnII? represents a divalent metal element except the Ln? element; MIII? represents a trivalent metal element; MIV? represents a tetravalent metal element; A represents a metal element selected from the group consisting of Li, Na, and K; 0<p?0.2; 0?a, 0?b, a+b>0, 0?n, and 0.002?(3n+2)a/4?0.9.Type: GrantFiled: May 22, 2012Date of Patent: April 22, 2014Assignees: Mitsubishi Chemical Corporation, Independent Administrative Institution National Institute for Materials ScienceInventors: Naoto Hirosaki, Takatoshi Seto, Naoto Kijima
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Patent number: 8409470Abstract: An object of the present invention is to provide an inorganic phosphor having fluorescence properties emitting an orange or red light which has a longer wavelength as compared with the cases of conventional sialon phosphors activated with a rare earth. The invention relates to a design of white light-emitting diode rich in a red component and having good color-rendering properties by employing a solid solution crystal phase phosphor which uses as a host crystal an inorganic compound having the same crystal structure as that of a CaSiAlN3 crystal phase and to which M (wherein M is one or two or more elements selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb) is added as an emission center.Type: GrantFiled: May 26, 2006Date of Patent: April 2, 2013Assignees: Independent Administrative Institution National Institute for Materials Science, Mitsubishi Chemical CorporationInventors: Naoto Hirosaki, Kyota Ueda, Hajime Yamamoto
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Publication number: 20120319155Abstract: Disclosed is a light-emitting device that exhibits good color rendering and highly efficiently emits white light in an incandescent bulb color range. The semiconductor light-emitting device (1) of the present invention includes: a semiconductor light-emitting element (2) that emits blue light; a green phosphor (14) that absorbs the blue light and emits green light; and an orange phosphor (13) that absorbs the blue light and emits orange light. The orange phosphor (13) produces an emission spectrum having a peak at a wavelength of equal to or greater than 590 nm but equal to or less than 630 nm and having a full width at half maximum of 130 nm or greater at the peak, the full width at half maximum of the emission spectrum of the orange phosphor (13) being broader than a full width at half maximum of an emission spectrum of the green phosphor (14). The orange phosphor (13) exhibits an absorptance having a peak wavelength of 420 nm or greater. ABS(530) and ABS(MAX) satisfy a relation, ABS(530)/ABS(MAX)<0.Type: ApplicationFiled: January 27, 2011Publication date: December 20, 2012Applicants: INDEPENDENT ADMINISTRATIVE INSTITUTION, NATIONAL INSTITUTE FOR MATERIALS SCIENCE, SHARP KABUSHIKI KAISHAInventors: Kenichi Yoshimura, Hiroshi Fukunaga, Kohsei Takahashi, Naoto Hirosaki
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Patent number: 8313767Abstract: Sustained release microparticles suitable for various types of drugs, or drug-containing sustained release microparticles capable of sustained release of drugs over a period of three days or more and capable of inhibiting initial burst release; a process for producing the same; and preparations containing the microparticles are disclosed. The drug-containing sustained release microparticles comprise a drug other than human growth hormone and a porous apatite derivative, and optionally include a water-soluble bivalent metal compound.Type: GrantFiled: September 2, 2010Date of Patent: November 20, 2012Assignee: Independent Administrative Institution, National Institute for Materials ScienceInventors: Yutaka Mizushima, Yasuaki Ogawa, Junzo Tanaka, Toshiyuki Ikoma
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Publication number: 20120262648Abstract: A phosphor which emits light having high brightness, serves as an excellent orange or red phosphor whose light brightness is less decreased when exposed to an excitation source contains a crystal phase having the chemical composition expressed by the general formula [1]: (1?a?b)(Ln?pMII?1-pMIII?MIV?N3).a(MIV?(3n+2)/4NnO).b(AMIV?2N3)??[1] wherein Ln? represents a metal element selected from the group consisting of lanthanoids, Mn, and Ti; MnII? represents a divalent metal element except the Ln? element; MIII? represents a trivalent metal element; MIV? represents a tetravalent metal element; A represents a metal element selected from the group consisting of Li, Na, and K; 0<p?0.2; 0?a, 0?b, a+b>0, 0?n, and 0.002?(3n+2)a/4?0.9.Type: ApplicationFiled: May 22, 2012Publication date: October 18, 2012Applicants: Independent Administrative Institution National Institute For Materials Science, Mitsubishi Chemical CorporationInventors: Naoto HIROSAKI, Takatoshi Seto, Naoto Kijima
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Patent number: 8206611Abstract: A phosphor which emits light having high brightness, serves as an excellent orange or red phosphor whose light brightness is less decreased when exposed to an excitation source contains a crystal phase having the chemical composition expressed by the general formula [1]: (1?a?b)(Ln?pMII?1?pMIII?MIV?N3).a(MIV?(3n+2)/4NnO).b(AMIV?2N3)??[1] wherein Ln? represents a metal element selected from the group consisting of lanthanoids, Mn, and Ti; MnII? represents a divalent metal element except the Ln? element; MIII? represents a trivalent metal element; MIV? represents a tetravalent metal element; A represents a metal element selected from the group consisting of Li, Na, and K; 0<p?0.2; 0?a, 0?b, a+b>0, 0?n, and 0.002?(3n+2)a/4?0.9.Type: GrantFiled: May 24, 2006Date of Patent: June 26, 2012Assignees: Mitsubishi Chemical Corporation, Independent Administrative Institution National Institute for Materials ScienceInventors: Naoto Hirosaki, Takatoshi Seto, Naoto Kijima
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Patent number: 7892451Abstract: Disclosed is a phosphor containing a nitrogen element, a compound having a garnet structure and an activator. The activator is composed of at least one element selected from the group consisting of Ce, Pr, Nd, Eu, Tb, Dy, Ho, Er, Tm, Yb and Mn.Type: GrantFiled: April 21, 2005Date of Patent: February 22, 2011Assignees: Sumitomo Chemical Company, Limited, Independent Administrative Institution National Institute for Materials ScienceInventors: Naoto Hirosaki, Takayoshi Ezuhara, Susumu Miyazaki
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Patent number: 7688279Abstract: A three-dimensional fractal-structure body partially or entirely comprises a three-dimensional fractal structure, the fractal structure body having a local minimum value at a particular wavelength determined by structural and material factors of the fractal structure in a transmissivity for electromagnetic waves and/or a local minimum value at a particular wavelength determined by structural and material factors of the fractal structure in the reflectivity for electromagnetic waves.Type: GrantFiled: September 7, 2004Date of Patent: March 30, 2010Assignees: Juridical Foundation Osaka Industrial Promotion Organization, Independent Administrative Institution National Institute for Materials ScienceInventors: Yoshinari Miyamoto, Soshu Kirihara, Atsutaka Mori, Mitsuo Takeda, Katsuya Honda, Kazuaki Sakoda
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Publication number: 20100047110Abstract: A Ni-base superalloy of the present invention essentially includes, by weight %, Co: 9 to 11%, Cr: 9 to 12%, Mo: up to 1%, W: 6 to 9%, Al: 4 to 5%, Ti: 4 to 5%, Nb: up to 1%, Ta: up to 3%, Hf: 0.5 to 2.5%, Re: up to 3%, C: 0.05 to 0.15%, B: 0.005 to 0.015%, Zr: up to 0.05%, and the balance of Ni and inevitable impurities. This alloy, as a component material of an industrial gas turbine, has an excellent resistance to corrosion at high temperatures to deal with low-quality fuel and a resistance to oxidation at high temperatures and high-temperature strength to deal with improvement in thermal efficiency due to high-temperature demands and can ensure a high yield at a casting process.Type: ApplicationFiled: September 8, 2009Publication date: February 25, 2010Applicants: Kawasaki Jukogyo Kabushiki Kaisha, Independent Administrative Institution National Institute for Materials ScienceInventors: Masahiro Sato, Tsuyoshi Takenaka, Seiya Nitta, Toshiharu Kobayashi, Yutaka Koizumi, Hiroshi Harada
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Patent number: 7378394Abstract: Provided is a sustained-release microparticle preparation of a human growth hormone which combines biodegradability with sustained-release performance while avoiding the use of an organic solvent as much as possible, allows the sustained-release of a human growth hormone over 3 days or more and reduction in the initial burst release, can contain a human growth hormone at 10% or more, can quantitatively adsorb and encapsulate a human growth hormone at up to 20%, and has excellent dispersion and needle penetration properties. A process for producing the sustained-release microparticle preparation of a human growth hormone is also provided. The sustained-release microparticle preparation comprises a porous apatite derivative, a human growth hormone, and a water-soluble divalent metal compound.Type: GrantFiled: June 15, 2004Date of Patent: May 27, 2008Assignees: GaleniSearch, Laboratories, Japan Science and Technology Agency, Independent Administrative Institution, National Institute For Materials ScienceInventors: Yasuaki Ogawa, Takao Fujii, Yoko Miyamoto, Jun Niimi, Toshiyuki Ikoma, Junzo Tanaka
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Publication number: 20080008618Abstract: A Ni-base superalloy of the present invention essentially includes, by weight %, Co: 9 to 11%, Cr: 9 to 12%, Mo: up to 1%, W: 6 to 9%, Al: 4 to 5%, Ti: 4 to 5%, Nb: up to 1%, Ta: up to 3%, Hf: 0.5 to 2.5%, Re: up to 3%, C: 0.05 to 0.15%, B: 0.005 to 0.015%, Zr: up to 0.05%, and the balance of Ni and inevitable impurities. This alloy, as a component material of an industrial gas turbine, has an excellent resistance to corrosion at high temperatures to deal with low-quality fuel and a resistance to oxidation at high temperatures and high-temperature strength to deal with improvement in thermal efficiency due to high-temperature demands and can ensure a high yield at a casting process.Type: ApplicationFiled: December 21, 2004Publication date: January 10, 2008Applicants: Kawasaki Jukogyo Kabushiki Kaisha, Independent Administrative Institution National Institute for Materials ScienceInventors: Masahiro Sato, Tsuyoshi Takenaka, Seiya Nitta, Toshiharu Kobayashi, Yutaka Koizumi, Hiroshi Harada
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Patent number: 7253446Abstract: A light-emitting device and illumination apparatus using the same are provided. The light-emitting device includes a semiconductor light-emitting element that emits blue-violet or blue light and a fluorescent material that absorbs the light emitted by the semiconductor light-emitting element and emits fluorescence of wavelengths different from the light, wherein the fluorescent material includes a mixture of a first fluorescent material, a second fluorescent material that has a longer emission wavelength than that of the first fluorescent material, and a third fluorescent material that has a longer emission wavelength than the second fluorescent material, and the first fluorescent material is a europium-activated ?-SiAlON fluorescent material, the second fluorescent material is a europium-activated ?-SiAlON fluorescent material, and the third fluorescent material is a nitride crystalline red fluorescent material of a general formula of (Ca,Eu)AlSiN3.Type: GrantFiled: February 1, 2006Date of Patent: August 7, 2007Assignees: Fujikura Ltd., Independent Administrative Institution National Institute for Materials ScienceInventors: Ken Sakuma, Naoki Kimura, Koichiro Masuko, Naoto Hirosaki
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Publication number: 20070164308Abstract: A light emitting apparatus has a light emitting element with an emission wavelength in the range of 360 to 550 nm and a rare-earth element doped oxide nitride phosphor or cerium ion doped lanthanum silicon nitride phosphor. Part of light radiated from the light emitting element is wavelength-converted by the phosphor. The light emitting apparatus radiates white light generated by a mixture of the wavelength-converted light and the other part of light radiated from the light emitting element.Type: ApplicationFiled: March 13, 2007Publication date: July 19, 2007Applicants: TOYODA GOSEI CO., LTD., INDEPENDENT ADMINISTRATIVE INSTITUTION, NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Naoki Yoshimura, Yoshinobu Suehiro, Yuji Takahashi, Koichi Ota, Mamoru Mitomo, Tadashi Endo, Masakazu Komatsu
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Patent number: 7090478Abstract: An apparatus for manufacturing an anisotropic formed body in which functional, magnetic fine particles are oriented in a specific direction within a matrix and in which anisotropy is given to properties attributable to the functional fine particles. The apparatus allows use of a wide variety of materials as the functional fine particles and realizes an anisotropy which is parallel and of a uniform interval within a large area. Further, a method for manufacturing an anisotropic formed body, includes applying, by using a superconducting magnet device, a uniform and parallel magnetic field with magnetic lines of force at equal intervals and parallel to each other, to a mold in which the matrix is filled with a liquid molding material containing functional, magnetic fine particles, to orient the functional fine particles in a direction of the magnetic lines of force, whereby the liquid molding material subsequently hardens.Type: GrantFiled: August 22, 2003Date of Patent: August 15, 2006Assignees: Independent Administrative Institution National Institute for Materials Science, Polymatech Co., Ltd.Inventors: Hitoshi Wada, Tsukasa Kiyoshi, Masayuki Tobita, Eiji Homma, Hideaki Konno
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Publication number: 20060130934Abstract: Ferritic stainless steel was produced by the melting method. The ferritic stainless steel was worked to the shape of a medical device for living soft tissue to obtain a medical device body. The medical device body was brought into contact with gas including nitrogen at a 800° C. treatment temperature or more to make the ferritic stainless steel forming the medical device body absorb the nitrogen and transform at least part of the ferritic stainless steel to austenite.Type: ApplicationFiled: November 11, 2003Publication date: June 22, 2006Applicants: Independent Administrative Institution National Institute For Materials Science, Japan Lifeline Co., Ltd.Inventors: Daisuke Kuroda, Takao Hanawa, Morihide Makino, Takashi Kawabata
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Publication number: 20050001225Abstract: A light emitting apparatus has a light emitting element with an emission wavelength in the range of 360 to 550 nm and a rare-earth element doped oxide nitride phosphor or cerium ion doped lanthanum silicon nitride phosphor. Part of light radiated from the light emitting element is wavelength-converted by the phosphor. The light emitting apparatus radiates white light generated by a mixture of the wavelength-converted light and the other part of light radiated from the light emitting element.Type: ApplicationFiled: November 28, 2003Publication date: January 6, 2005Applicants: Toyoda Gosei Co., Ltd., Independent Administrative Institution, National Institute for Materials ScienceInventors: Naoki Yoshimura, Yoshinobu Suehiro, Yuji Takahashi, Koichi Ota, Mamoru Mitomo, Tadashi Endo, Masakazu Komatsu
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Patent number: 6713420Abstract: A porous ceramics body for in vivo or in vitro 1use in which a number of pores are closely distributed in three dimensional directions, adjoining pores thereof being partitioned by wall portions with respective communication ports to bring said adjoining pores into communication with each other such that a series of connected spherical pores are formed therewithin, said porous ceramics body being made of a sintered calcium phosphate body, characterized in that, within said sintered calcium phosphate body, pores each having a diameter of 5 microns (&mgr;m) or more account for 80% or more of all the pores in terms of volume whereas pores having a diameter of less than 5 microns (&mgr;m) account for less than 20% of all the pores in terms of volume as subjected to a mercury porosimeter measurement.Type: GrantFiled: October 10, 2001Date of Patent: March 30, 2004Assignees: Toshiba Ceramics Co., Ltd., Independent Administrative Institution National Institute for Materials Science, Toshiba Denko Co., Ltd.Inventors: Kohichi Imura, Takashi Umezawa, Akihiko Ichikawa, Katsuhiro Chaki
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Patent number: 6673308Abstract: A nickel-base single-crystal superalloy, essentially consists of, in percentages by weight, 4.0% to 11.0% of cobalt, 3.5% to less than 5.0% of chromium, 0.5% to 3.0% of molybdenum, 7.0% to 10.0% of tungsten, 4.5% to 6.0% of aluminum, 0.1% to 2.0% of titanium, 5.0% to 8.0% of tantalum, 1.0% to 3.0% of rhenium, 0.01% to 0.5% of hafnium, 0.01% to 0.1% of silicon, and a balance being nickel and inevitable impurity, a total amount of rhenium and chromium being not less than 4.0% and a total amount of rhenium, molybdenum, tungsten and chromium being not more than 18.0%.Type: GrantFiled: August 30, 2001Date of Patent: January 6, 2004Assignees: Kabushiki Kaisha Toshiba, Independent Administrative Institution National Institute for Material ScienceInventors: Takehisa Hino, Yutaka Koizumi, Toshiharu Kobayashi, Shizuo Nakazawa, Hiroshi Harada, Yutaka Ishiwata, Yomei Yoshioka