Inorganic Luminescent Compositions With Organic Nonluminescent Material Patents (Class 252/301.36)
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Patent number: 8004175Abstract: A light-emitting material is provided allowing a light-emitting body having an excellent low-excitation characteristic and high brightness to be obtained by using a light-emitting material containing a light-emitting base material that emits light through radiative transition of electrons in material atoms, the light-emitting base having nanoparticles added thereto and dispersed therein, the light-emitting material also allowing a reduction in excitation energy and an increase in brightness to be simultaneously achieve, thereby allowing, for a wide range of light-emitting bodies, a reduction in excitation energy and a significant improvement in brightness to be achieved in a simple structure. Also provided is a light-emitting body having the light-emitting material and a light-emitting method.Type: GrantFiled: June 16, 2005Date of Patent: August 23, 2011Assignees: Mitsubishi Heavy Industries, Ltd., Japan Nuclear Cycle Development InstituteInventors: Mikio Toda, Toshiro Nishi, Nobuki Oka, Hiroyuki Tsutaya, Kuniaki Ara, Hiroaki Ohira, Kazuya Kurome, Naoki Yoshioka
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Patent number: 8003012Abstract: The current invention provides a persistent phosphor blend, along with techniques for making and using the blend. The persistent phosphor blend is made of at least one persistent phosphor combined with at least one other phosphor, where the excitation spectra of the one or more other phosphors overlap the emission spectra of the one or more persistent phosphors. The choice of the phosphors used allows the decay time and emission colors to be tuned for the specific application. In another embodiment, the invention provides a method for making persistent phosphor blends with tunable colors. In yet another embodiment, applications for such a persistent phosphor blend are provided.Type: GrantFiled: March 28, 2008Date of Patent: August 23, 2011Assignee: General Electric CompanyInventors: Holly Ann Comanzo, Alok Mani Srivastava, William Winder Beers, Anant Achyut Setlur, Claire Susan Henderson
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Publication number: 20110198539Abstract: The present invention provides a fluorescent substance composite glass which is chemically stable, has a large size, is reduced in wall thickness, has a uniform thickness and therefore has a high energy conversion efficiency; a fluorescent substance composite glass green sheet and a process for producing the fluorescent substance composite glass. The fluorescent substance composite glass of the present invention is produced by baking a mixture containing a glass powder and an inorganic fluorescent substance powder, in which the energy conversion efficiency to a visible light wavelength region of 380 to 780 nm is 10% or more, when light having an emission peak in a wavelength range of 350 to 500 nm is applied.Type: ApplicationFiled: April 25, 2011Publication date: August 18, 2011Inventors: Masaru Iwao, Yoshio Umayahara
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Publication number: 20110186782Abstract: Method for the preparation of inorganic-NP-composite microgels is based on the reversible transfer of microgels between water and an organic solvent such as tetrahydrofuran (THF). The method is used to produce semiconductor nanocrystals, often referred to as quantum dots (QDs) which are well known for their unique optical, electrical, magnetic and catalytic properties, as the inorganic NPs, recognizing that the best quality QDs are synthesized by a high temperature process in organic media, and have their surface covered with hydrophobic ligands (such as trioctylphosphine oxide, TOPO) that render the NPs insoluble in an aqueous solution.Type: ApplicationFiled: March 28, 2011Publication date: August 4, 2011Inventors: Mitchell Alan Winnik, Lei Shen, Andrij Pich
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Publication number: 20110186781Abstract: A coloured coating composition comprising a white base paint and at least one coloured pigment in a form that can be readily mixed with the white base paint, the white base paint comprising a film-forming polymer, a liquid carrier, one or more opacifying white pigments and one or more extenders, the coloured coating composition having a light reflectance value Y less than 110, and greater than that defined by the equation Y=mC+K, where 25>C>1.0, C being the chroma of the coloured coating composition, m and K being empirical coefficients selected according to the type and number of the type of the at least one coloured pigment, and dependant on the hue angle of the coating composition.Type: ApplicationFiled: December 12, 2006Publication date: August 4, 2011Inventors: Celia Charlotte Taylor, Ralph Edward Chandler, Peter Mark Spiers, Gary Thomas Wren, David Elliot
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Patent number: 7982212Abstract: A copolymer comprising a repeating unit of the following formula (1) and a repeating unit of the following formula (2): (wherein, a ring A and ring B represent each independently an aromatic ring optionally having a substituent. X is —O—, —S—, —S(?O)—, —S(?O)2—, —Si(R1)2—Si(R1)2—, —Si(R1)2—, —B(R1)—, —P(R1)—, —P(?O)(R1)—, —O—C(R1)2— or —N?C(R1)—, and R1 represents a substituent. When there are two or more R1s in the same formula, they may be the same or different.) (wherein, Y is —O—, —S— or —C(?O)—. Ar1 represents an aryl group optionally having a substituent or a monovalent heterocyclic group optionally having a substituent, and there is no substituent connected to atoms of the ring of Ar1, the atoms being adjacent an atom of Ar1 connected to a nitrogen atom in the formula. R2 represents a substituent, and n represents an integer of from 0 to 3. When there are two or more R2s in the formula, they may be the same or different.).Type: GrantFiled: October 3, 2006Date of Patent: July 19, 2011Assignee: Sumitomo Chemical Company, LimitedInventors: Tomoyuki Suzuki, Takanobu Noguchi
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Patent number: 7976726Abstract: A formulation comprises quantum dots and a quenching-preventive agent in a carrier material. The quenching-preventive agent is a metal chelating agents, a corrosion inhibitor, or a combination thereof. The formulation can be applied to a metal substrate, without experiencing metal ion induced fluorescence quenching.Type: GrantFiled: April 25, 2007Date of Patent: July 12, 2011Assignee: Siluria Technologies, Inc.Inventors: Cheng-I Wang, Haixia Dai, Manfred Heidecker
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Publication number: 20110165689Abstract: The invention relates generally to gold nanoclusters, and in particular, fluorescent gold nanoclusters. The gold nanoclusters may be stabilized, for example, with a protein or stabilizing agent. In some cases, the gold nanoclusters may be used in methods or articles to determine the presence, absence, and/or concentration of mercuric ions in a sample.Type: ApplicationFiled: August 4, 2009Publication date: July 7, 2011Inventors: Jackie Y. Ying, Jianping Xie, Yuangang Zheng
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Patent number: 7968004Abstract: Polyfluorene polymers and copolymers having substantial amounts (10-100%) of fluorenes coupled at the 2 and 5 positions of fluorene are useful as active layers in OLED devices where triplet energies >2.10 eV are required.Type: GrantFiled: October 14, 2008Date of Patent: June 28, 2011Assignee: General Electric CompanyInventors: James Anthony Cella, Joseph John Shiang, Elliott West Shanklin, Paul Michael Smigelski, Jr.
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Publication number: 20110147614Abstract: Phosphor compositions are provided that can be incorporated into or onto plastic substrates as covert security features. The plastic substrates can be transparent and the phosphor compositions have a refractive index that effectively matches the refractive index of the plastic substrate to maintain the transparency. The phosphor compositions have absorption in the infrared, thus enabling excitation and detection of the compositions with an infrared emitting source.Type: ApplicationFiled: December 13, 2010Publication date: June 23, 2011Applicant: HONEYWELL INTERNATIONAL INC.Inventors: James Kane, William Ross Rapoport, Carsten Lau
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Publication number: 20110147664Abstract: Compositions comprising a phosphor and a compound having the formula R1R2M, wherein R1 is a substituted or unsubstituted alkyl, aryl, heteroaryl, arylalkyl, heteroarylalkyl, alkoxy, alkoxyl, acyl heterocycle, haloalkyl, oxaalkyl, or silyl; R2 is a sulfate, sulfonate, or carboxylate and M is an alkali metal or an alkaline earth metal are provided. Phosphors coated with the compound, methods of making the coated phosphors and articles comprising the compositions are provided.Type: ApplicationFiled: December 23, 2009Publication date: June 23, 2011Applicant: GENERAL ELECTRIC COMPANYInventor: Robert Joseph Lyons
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Patent number: 7964112Abstract: A phosphor having a high brightness after being exposed to plasma and a phosphor paste containing the phosphor. The phosphor comprises a fluorescent substance A1 containing a compound represented by the following formula (I) and at least one activator selected from the group consisting of Eu and Mn, and a fluorescent substance B1 containing an aluminate; mM1O.nM2O.2M3O2??(I) [in the formula (I), M1 is at least two selected from the group consisting of Ca, Sr and Ba, or Ca alone or Ba alone; M2 is at least one selected from the group consisting of Mg and Zn; M3 is at least one selected from the group consisting of Si and Ge; 0.5?m?3.5; and 0.5?n?2.5].Type: GrantFiled: October 21, 2003Date of Patent: June 21, 2011Assignee: Sumitomo Chemical Company, LimitedInventors: Keiji Ono, Susumu Miyazaki
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Publication number: 20110140030Abstract: Hybrid composite materials with multiscale morphologies are formed by doping polymer submicrometer spheres with semiconductor or metal (e.g. CdS or Ag, respectively) nanoparticles and using these doped microspheres as functional building blocks in production of hybrid periodically structured materials. The preparation of hybrid polymer particles include the following stages: (i) synthesis of monodisperse polymer microspheres, (ii) in-situ synthesis of the inorganic nanoparticles either on the surface, or in the bulk with polymer beads, and (iii) encapsulation of hybrid microspheres with a hydrophobic shell.Type: ApplicationFiled: October 25, 2010Publication date: June 16, 2011Inventor: Eugenia KUMACHEVA
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Publication number: 20110140046Abstract: A method of synthesizing colloidal semiconductor nanocrystals involves contacting a source of at least one semi-conductor cation element (Group 11-14, more preferably Group 12-14, more preferably 12 or 14, more preferably Cd, Zn, Hg or Pb, most preferably Cd) with a source of at least one Group 15, or 16 element in the presence of a ligand forming compound containing a carboxylic acid moiety in a reaction medium comprising a solvent that is substantially noncoordinating with respect to the at least one cation, the ligand forming compound and the source of at least one cation element having a molar ratio of 1:1 or less. The cation element source is preferably bonded to two low carbon acids. Some of the low carbon acids are substituted with the ligand forming compound to produce a cation precursor that is more soluble in the noncoordinating solvent.Type: ApplicationFiled: August 11, 2009Publication date: June 16, 2011Inventors: Kui Yu, Jianying Ouyang
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Publication number: 20110140162Abstract: Provided are a conductive adhesive capable of ensuring both conductive properties and adhesion properties and an LED substrate using the conductive adhesive. The conductive adhesive contains a conductive filler, a binder resin, and a solvent as main components thereof, and the conductive filler contains a metal powder having an average particle size of 2 to 30 ?m as a main component thereof and contains ultrafine metal particles having an average particle size of 100 nm or less.Type: ApplicationFiled: June 26, 2009Publication date: June 16, 2011Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Issei Okada, Kouhei Shimoda
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Publication number: 20110140002Abstract: A novel marking system is provided. The marking includes photoluminescent materials and provides for shifting of excitation energy. The marking provides flexibility for identification and tracking, both in stealth and non-stealth appearances.Type: ApplicationFiled: February 18, 2011Publication date: June 16, 2011Applicant: Performance Indicator, LLCInventors: Satish Agrawal, Edward Kingsley
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Publication number: 20110140045Abstract: A phosphorescent asphalt mixture comprising a binder, aggregate and a phosphorescent compound is disclosed. The phosphorescent compound has formula MAl2O4, wherein M is chosen from Sr, Ba and Ca, and wherein the phosphorescent compound has been doped with at least one rare earth element.Type: ApplicationFiled: June 23, 2009Publication date: June 16, 2011Inventors: Catherine Rodrigues, Chantal Soubigou
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Patent number: 7959827Abstract: A long-lived phosphor composition is provided, along with methods for making and using the composition. More specifically, in one embodiment, the phosphor comprises a material having a formula of Ax-y-zAl2-m-n-o-pO4:Euy, REz, Bm, Znn, Coo, Scp. In this formula, A may be Ba, Sr, Ca, or a combination of these metals, x is between about 0.75 and 1.3, y is between about 0.0005 and 0.1, z is between about 0.0005 and 0.1, m is between about 0.0005 and 0.30, n is between about 0.0005 and 0.10, o is between about 0 and 0.01 and p is between about 0 and 0.05. RE is Dy, Nd, or a combination thereof. In another embodiment, methods are provided for making persistent phosphors comprising the formulations above. Other embodiments provide applications for such a phosphor, comprising uses in toys, emergency equipment, clothing, and instrument panels, among others.Type: GrantFiled: December 12, 2007Date of Patent: June 14, 2011Assignee: General Electric CompanyInventors: Holly Ann Comanzo, Alok Mani Srivastava, William W. Beers, Sergio Paulo Martins Loureiro, Anant Achyut Setlur, Stanley John Stoklosa, Claire S. Henderson
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Publication number: 20110133630Abstract: Disclosed is a method for manufacturing a fluorescent material. The method includes: putting the fluorescent material into a first solution, and agitating the fluorescent material and the first solution; putting a nano fluorescent material having a nano size into the first solution, and agitating the nano fluorescent material having a nano size and the first solution; and separating supernatant from the first solution including the fluorescent material, and drying the fluorescent material. Disclosed is a light emitting device. The light emitting device includes: a body; a light emitting element mounted on a cavity formed in the body; a resin formed in the cavity; and a fluorescent material added to the resin, wherein a nano fluorescent material having a nano size is adsorbed in the fluorescent material.Type: ApplicationFiled: November 19, 2010Publication date: June 9, 2011Applicant: LG Innotek Co., Ltd.Inventors: Yun Soo SONG, Sang Hyuk LEE
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Patent number: 7947772Abstract: Multiphasic colorant nano-components (MPCs) having at least two phases and at least one colorant are provided. In certain aspects, the at least two phases are optically or visually distinct from one another. The MPCs can be used in various methods in various applications, such as visual, optical, and/or electronic displays, including in paints, inks, coatings, plastics, textiles, electronic display devices, pixels, or electronic paper. The MPCs are formed by methods of electrified jetting of polymers.Type: GrantFiled: June 11, 2008Date of Patent: May 24, 2011Assignee: The Regents of the University of MichiganInventors: Joerg Lahann, Kyung-Ho Roh, David C. Martin
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Publication number: 20110114891Abstract: An ink composition comprising a microparticulate fluorescent material which can emit a high brightness fluorescent light by ultraviolet ray and has a predetermined nanosize is provided. The ink composition comprises a microparticulate fluorescent material represented by the formula YVO4:A, wherein A is a rare earth metal other than yttrium, which can emit a fluorescent light by the excitation with ultraviolet ray. The fluorescent material has an average primary particle size of 30 to 400 nm and has not been calcined. The fluorescent material is prepared by, for example, mixing Composition (I) containing a yttrium compound, a compound of rare earth metal other than yttrium and a complex forming compound in water with Composition (II) containing a vanadium compound in water and then reacting them.Type: ApplicationFiled: June 30, 2009Publication date: May 19, 2011Applicants: Keio University, Sinloihi Co., Ltd.Inventors: Tetsuhiko Isobe, Satoru Takeshita, Mitsuru Kono, Seiji Niikura
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Publication number: 20110114181Abstract: The present invention relates to a method for manufacturing quantum dots including mixing a Group II metal precursor and a natural oil and increasing temperature thereof and adding a Group VI chalcogenide precursor to the mixed solution and increasing temperature thereof. According to the present invention, use of a natural oil, instead of any artificially synthesized surfactant, allows mass production of eco-friendly quantum dots.Type: ApplicationFiled: June 1, 2010Publication date: May 19, 2011Inventors: Jae-il Kim, Suk-Jin Ham, Dong-Hyun Cho, In-Hyung Lee
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Patent number: 7938984Abstract: The invention is directed to a composition having a carrier matrix, and a particulate luminescent composition dispersed therein, the particulate luminescent composition comprising a rare-earth-doped solid-state solution of alkaline earth fluorides represented by the chemical formula REx(CaaSrbBac)1?xF2+x?2yOy wherein RE represents a three-valent rare-earth element, 0.005?x?0.20, and 0?y?0.2, a+b+c=1, with the proviso at least two of a, b, and c are not equal to zero; the particulate luminescent composition exhibiting a luminescence spectrum having a plurality of intensity peaks at characteristic wavelengths. It is further directed to a process by contacting a surface with the composition and articles made therefrom.Type: GrantFiled: December 12, 2007Date of Patent: May 10, 2011Assignee: E.I. du Pont de Nemours and CompanyInventors: Michael Karl Crawford, Kurt Richard Mikeska
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Publication number: 20110101848Abstract: A light emitting device generates a broadband light beam in response to an excitation light beam. The light emitting device includes a matrix in which is provided a plurality of fluorescent components of different types. Each type of fluorescent component has an absorption spectrum and an emission spectrum respectively differing from absorption and emission spectra of other types of fluorescent components. The matrix and the types, concentration and positioning of the fluorescent components are selected to output the broadband light beam in response to the excitation light beam. The types of fluorescent components may include fluorescent compounds, quantum dots or a combination thereof. The light-emitting device above may be used as a fluorescent standard, or incorporated into a light source. Scattering elements may also be incorporated in the matrix.Type: ApplicationFiled: October 30, 2009Publication date: May 5, 2011Applicant: Institut National D'OptiqueInventors: Jean-Francois CORMIER, Michel FORTIN
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Patent number: 7935272Abstract: Disclosed is a dispersant having a multifunctional head, and a phosphor paste composition comprising the dispersant. The dispersant has a multifunctional head that comprises an acidic group, a basic group and an aromatic group, thereby enhancing an affinity for the surface of phosphor particles and improving dispersibility.Type: GrantFiled: September 10, 2007Date of Patent: May 3, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Seon Mi Yoon, Hyeon Jin Shin, Jae Young Choi, Seong Jae Choi, Bum Jae Lee, Ungyu Paik, Sangkyu Lee, Jung Hwan Lee
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Publication number: 20110095676Abstract: Orange-red phosphors activated by europium and rare earth ions of formula I and formula II are long persistent, stable, and non-toxic M1F2-M1S:Eu2+, Ln3+??(I) M23M32O5X2: inside or outside Eu2+, Ln3+??(II) wherein M1 is Ba, Sr, Ca, Zn, Mg, or a combination thereof; M2 is Ba, Sr, Ca, Mg, Zn, or a combination thereof; M3 is Al, Ga, B, In, or a combination thereof; X is F, Cl, Br, I, or a combination thereof; and Ln is Dy, Yb, Tm, Er, Ho, Sm, Nd, or a combination thereof.Type: ApplicationFiled: October 27, 2009Publication date: April 28, 2011Applicant: GENERAL ELECTRIC COMPANYInventors: Alok Mani Srivastava, Holly Ann Comanzo, Claire Susan Henderson
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Publication number: 20110095232Abstract: Phosphor and fluorescent compositions and methods of producing them are provided.Type: ApplicationFiled: September 2, 2005Publication date: April 28, 2011Inventor: Tom Mahany
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Publication number: 20110089376Abstract: Disclosed is a dispersant having a multifunctional head, and a phosphor paste composition comprising the dispersant. The dispersant has a multifunctional head that comprises an acidic group, a basic group and an aromatic group, thereby enhancing an affinity for the surface of phosphor particles and improving dispersibility.Type: ApplicationFiled: December 22, 2010Publication date: April 21, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Seon Mi YOON, Hyeon Jin SHIN, Jae Young CHOI, Seong Jae CHOI, Bum Jae LEE, Ungyu PAIK, Sangkyu LEE, Jung Hwan LEE
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Patent number: 7927511Abstract: The invention relates to a composition for coding having at least one pair of mutually associated luminescent substances having first and second luminescent substances which emit in a joint emission range located outside the visible spectral range. The emission spectra of the first and second luminescent substances overlap in at least a subrange of the stated emission range such that the emission spectrum of the first luminescent substance is complemented by the emission spectrum of the second luminescent substance.Type: GrantFiled: October 5, 2004Date of Patent: April 19, 2011Assignee: Giesecke & Devient GmbHInventors: Thomas Giering, Wolfgang Rauscher
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Publication number: 20110084602Abstract: The present invention provides a luminescent composition capable of providing an electroluminescent sheet with a high productivity at low costs in an efficient manner, an electroluminescent sheet obtained from the luminescent composition which can be mass-produced, and a process for producing the electroluminescent sheet. The present invention relates to an adhesive luminescent composition produced by kneading and dispersing an electroluminescent substance in a resin having a glass transition temperature of from ?70 to 5° C.Type: ApplicationFiled: May 18, 2009Publication date: April 14, 2011Applicant: LINTEC CORPORATIONInventors: Kazue Saito, Yuko Iwamoto, Satoshi Naganawa, Shinichi Hoshi
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Patent number: 7922936Abstract: A particulate luminescent composition is disclosed that, when excited by electromagnetic radiation at a first frequency, emits electromagnetic radiation at a second frequency equal to or within 1500 cm?1 of the first frequency. The luminescent composition comprises substantially spherical particles having a weight average particle size of less than about 10 ?m and a particle size distribution such that at least about 90 weight percent of the particles are not larger than twice the average particle size.Type: GrantFiled: December 8, 2009Date of Patent: April 12, 2011Assignee: Cabot CorporationInventors: Mark J. Hampden-Smith, Liam Noailles, Richard Anthony Einhorn, Darryl S. Williams
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Publication number: 20110081538Abstract: The present invention relates to nanoparticles encapsulated within a host material. In one embodiment, a particle comprises a host material including nanoparticles with light-transmissive properties dispersed therein. Other embodiments relate to a powder comprising a particle of the invention, a composition including a particle of the invention, a formulation including a particle of the invention, a coating comprising a particle of the invention, a method for making a particle of the invention, and products and applications including a particle of the invention. In preferred embodiments, a nanoparticle comprises a semiconductor nanocrystal. In preferred embodiments, a host material comprises a wax.Type: ApplicationFiled: September 2, 2010Publication date: April 7, 2011Inventor: John R. Linton
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Publication number: 20110079929Abstract: The present invention relates to a kit for optical semiconductor encapsulation including a liquid first encapsulating material containing inorganic particles and a liquid second encapsulating material containing a phosphor; a kit for optical semiconductor encapsulation including a sheet-shaped first encapsulating material containing inorganic particles and a liquid second encapsulating material containing a phosphor; and a kit for optical semiconductor encapsulation including a liquid first encapsulating material containing inorganic particles and a sheet-shaped second encapsulating material containing a phosphor.Type: ApplicationFiled: October 6, 2010Publication date: April 7, 2011Applicant: NITTO DENKO CORPORATIONInventors: Hirokazu MATSUDA, Koji AKAZAWA, Kazuya FUJIOKA
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Publication number: 20110074279Abstract: Self-adhesive polymer having a relative permittivity of more than 4.5 useful as a matrix of a self-adhesive electroluminescence mass.Type: ApplicationFiled: December 3, 2009Publication date: March 31, 2011Applicant: Tesa SEInventors: Daniel KLIER, Berit Guse
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Publication number: 20110068681Abstract: The present invention provides a luminescent composition which is capable of providing an inorganic electroluminescent sheet with a high productivity at low costs in an efficient manner, and has a desired light transmittance (transparency) when no electric voltage is applied thereto, an inorganic electroluminescent sheet obtained from the luminescent composition which can be mass-produced, and a process for producing the inorganic electroluminescent sheet. The present invention relates to a luminescent composition including an inorganic electroluminescent substance and a binder resin, wherein a content of the inorganic electroluminescent substance is not less than 0.Type: ApplicationFiled: May 18, 2009Publication date: March 24, 2011Applicant: LINTEC CORPORATIONInventors: Satoshi Naganawa, Takashi Morioka, Naoki Taya, Takeshi Kondo, Kazue Saito, Yuko Iwamoto, Shinichi Hoshi, Yumiko Matsubayashi
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Patent number: 7910022Abstract: Disclosed are photoluminescent compositions containing photoluminescent phosphorescent materials and photoluminescent fluorescent materials whose emission signature lies partly or fully in the infrared region of the electromagnetic spectrum. Also disclosed are photoluminescent compositions containing photoluminescent phosphorescent materials and photoluminescent fluorescent materials whose emission signature lies partly or fully in the infrared region of the electromagnetic spectrum which are high in intensity and high in persistence.Type: GrantFiled: June 7, 2007Date of Patent: March 22, 2011Assignee: Performance Indicator, LLCInventors: Satish Agrawal, Edward Kingsley
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Publication number: 20110062430Abstract: Methods for the production of a blue light emitting nanomaterial are provided comprising nitriding Group 13 metals to produce nitrided Group 13 metals and doping the nitrided Group 13 metals with a dopant, particularly an M2+ dopant, such as Mg2+ or Zn2+, to produce doped nanoparticles. Blue light emitting nanocomposites on other materials, such as SiO2 or TiO2, are also provided. Blue light emitting nanomaterials and nanocomposites also can be coupled to photonic crystals. Nanocrystal-based electroluminescence device are also disclosed.Type: ApplicationFiled: June 1, 2009Publication date: March 17, 2011Inventors: Franciscus Cornelis Jacobus Maria van Veggel, Mingqian Tan, Venkataramanan Mahalingam, Vasanthakumaran Sudarsan
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Publication number: 20110059467Abstract: A controlled valency semiconductor nanocrystal can have a desired number of compounds associated with it. The semiconductor nanocrystal can have exactly one compound associated with it, and the compound can have exactly one binding site for an affinity target. The semiconductor nanocrystal can be used to image single copies of cell-surface proteins.Type: ApplicationFiled: June 20, 2008Publication date: March 10, 2011Applicant: Massachusetts Institute of TechnologyInventors: Alice Ting, Moungi G. Bawendi, Mark Howarth, Wenhao Liu
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Patent number: 7901594Abstract: The present invention relates to polyacene derivatives represented by general formula (I) below: (wherein R1 to R10, etc. each represents hydrogen atom, hydrocarbon group, or an alkoxy group; A1 and A2 are hydrogen atom, a halogen atom, a hydrocarbon group, an alkoxy group, cyano group, etc.; n is an integer of not less than 1; R6 and R7 may be linked to each other to form a ring); and a process for preparing the polyacene derivatives from polyhydro compounds as well as electrically conductive materials comprising the polyacene derivatives. According to the process for preparing the polyacene derivatives of the present invention, optional substituents can be introduced into any carbon atoms of the polyacene, and the number of aromatic rings can be increased.Type: GrantFiled: February 28, 2001Date of Patent: March 8, 2011Assignee: Japan Science and Technology CorporationInventor: Tamotsu Takahasi
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Patent number: 7902564Abstract: A ceramic body is disposed in a path of light emitted by a light source. The light source may include a semiconductor structure comprising a light emitting region disposed between an n-type region and a p-type region. The ceramic body includes a plurality of first grains configured to absorb light emitted by the light source and emit light of a different wavelength, and a plurality of second grains. For example, the first grains may be grains of luminescent material and the second grains may be grains of a luminescent material host matrix without activating dopant.Type: GrantFiled: December 22, 2006Date of Patent: March 8, 2011Assignees: Koninklijke Philips Electronics N.V., Philips Lumileds Lighting Company, LLCInventors: Regina B. Mueller-Mach, Gerd O. Mueller, Michael R. Krames, Peter J. Schmidt, Hans-Helmut Bechtel
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Publication number: 20110049756Abstract: Escape route marking for an aircraft comprising photoluminescent pigments in a carrier material, which luminesce in the dark, the carrier material comprising silicone and the photoluminescent pigments having a mean particle size of less than 150 ?m.Type: ApplicationFiled: February 27, 2009Publication date: March 3, 2011Applicant: LUFTHANSA TECHNIK AGInventor: Wolfgang Sutter
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Publication number: 20110042623Abstract: Water-based coating composition comprising at least one resin composition for a water-based coating composition and as a rheological assistant at least one polyamide and at least one acrylate thickener based on poly(meth)acrylic acid.Type: ApplicationFiled: February 13, 2009Publication date: February 24, 2011Applicant: BASF COATINGS GMBHInventors: Ingo Lüer, Egon Wegner
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Publication number: 20110045094Abstract: A particle comprising a quantum dot encapsulated by an amphiphilic polymer. These particles are suitable for use in biological and biomedical research and may emit fluorescence and may be water-soluble and biocompatible. The encapsulated quantum dot may be introduced into a living system without any substantial toxic or immunological effects.Type: ApplicationFiled: March 28, 2008Publication date: February 24, 2011Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCHInventors: Ming Yong Han, Yin Win Khin, Enyi Ye, Lai Ying Ng
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Publication number: 20110042618Abstract: Systems and methods related to handling and/or isolating nanotubes and other nanostructures are generally described. In some embodiments, a polymer can be exposed to a collection of agglomerated nanostructures to produce individuated nanostructures. The polymer can comprise one or more pendant groups capable of participating in a pi-pi interaction with at least a portion of the agglomerated nanostructures to produce individuated nanostructures. Individuated nanostructures can be isolated from nanostructures that remain agglomerated. In some cases, individuated nanostructures can be freeze dried to provide, for example, a plurality of nanostructures in solid form. The systems and methods described herein may be so effective in maintaining separation between individuated nanostructures that pluralities of dried nanostructures can be re-suspended in a fluid after they are dried, in some cases with relatively low forces applied during re-suspension.Type: ApplicationFiled: August 21, 2009Publication date: February 24, 2011Applicant: Massachusetts Institute of TechonologyInventors: Michael S. Strano, Woo-Jae Kim, Paul W. Barone
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Patent number: 7894732Abstract: A toner patch including a toner having a given excitation wavelength and a given emission wavelength may be deposited onto a control surface. Light may be provided onto the toner patch and at least a portion of emitted light may be detected from the toner patch at the given emission wavelength by a detector. Furthermore, an operating parameter may be adjusted based on the detected emitted light.Type: GrantFiled: February 28, 2008Date of Patent: February 22, 2011Assignee: Lexmark International, Inc.Inventors: Gary Allen Denton, Kurt Matthew Korfhage, Wilson M. Routt, Jr.
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Publication number: 20110038025Abstract: Provided is a compound semiconductor nanoparticle that exhibits circularly polarized luminescence characteristics. CdS prepared inside a core of ferritin, which is a cage-like protein, exhibits a high circularly polarized luminescence (CPL). A wavelength of the circularly polarized luminescence (CPL) can be controlled by laser irradiation, thereby enabling utilization of the compound semiconductor nanoparticle in the field of bionanotechnology, for example, in creating a WORM (Write-Once Read-Many times) memory. As the cage-like protein, which is a protein with a cavity formed therein, a protein belonging to the ferritin protein family, such as apoferritin, or a recombinant thereof can be used.Type: ApplicationFiled: March 26, 2009Publication date: February 17, 2011Inventors: Masanobu Naitou, Kenji Iwahori
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Patent number: 7887718Abstract: To provide a phosphor having an emission spectrum with a broad peak in a range from green color to yellow color, having a broad and flat excitation band capable of using lights of broad range from near ultraviolet/ultraviolet to blue lights as excitation lights, and having excellent emission efficiency and luminance. The problem is solved by providing the phosphor expressed by a general composition formula MmAaBbOoNn:Z (where element M is one or more kinds of elements having bivalent valency, element A is one or more kinds of elements having tervalent valency, element B is one or more kinds of elements having tetravalent valency, O is oxygen, N is nitrogen, and element Z is one or more kinds of elements acting as the activator), satisfying 4.0<(a+b)/m<7.0, a/m=0.5, b/a>2.5, n>o, n=2/3m+a+4/3b?2/3o, and having an emission spectrum with a peak wavelength of 500 nm to 650 nm when excited by light in a wavelength range from 300 nm to 500 nm.Type: GrantFiled: March 3, 2006Date of Patent: February 15, 2011Assignee: DOWA Electronics Materials Co., Ltd.Inventors: Akira Nagatomi, Kenji Sakane
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Publication number: 20110032963Abstract: An Eu-containing inorganic compound has a polycrystal structure, in which Eu has been doped into a matrix garnet type compound and has formed a solid solution in the matrix garnet type compound. A doping concentration of Eu occupying at an eight-coordination site of the garnet structure falls within the range of more than 0.5 mol % to 50.0 mol %, inclusive. The doping concentration of Eu occupying at the eight-coordination site of the garnet structure should preferably fall within the range of 5.0 mol % to 30.0 mol %.Type: ApplicationFiled: February 23, 2007Publication date: February 10, 2011Applicant: FUJIFILM CorporationInventors: Masayuki Suzuki, Masahiro Takata, Junichi Mori, Tomotake Ikada
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Publication number: 20110033690Abstract: The present invention relates to an afterglow coating comprising a clear varnish and a photoluminescent pigment, wherein the pigment comprises a white luminous colour in which the clear varnish is distributed. The present invention furthermore relates to methods for producing these coatings and to their use for coating surfaces in the cabin of aircraft.Type: ApplicationFiled: February 17, 2009Publication date: February 10, 2011Applicant: AIRBUS OPERATIONS GMBHInventor: Guenter Schmitz
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Patent number: 7883641Abstract: In accordance with the present invention, there are provided metal oxide-based phosphor microfine particles comprising a matrix crystal made of a metal oxide and a metal element doped as an emission center into the matrix crystal, wherein the microfine particles are provided with an organic group coordinated to a surface thereof, have a small particle size as well as a high affinity to and a high dispersibility in light-transmittable resins, and are inhibited from scattering light emitted from a light source; a process for producing the metal oxide-based phosphor microfine particles; a dispersion of the metal oxide-based phosphor microfine particles; a fluorescent conversion film; a method of separating the metal oxide-based phosphor microfine particles; a fluorescent liquid; a fluorescent paste; a phosphor; a process for producing the phosphor; and a fluorescent converter.Type: GrantFiled: August 24, 2009Date of Patent: February 8, 2011Assignees: Keio University, Idemitsu Kosan Co., Ltd.Inventors: Tetsuhiko Isobe, Ryo Kasuya, Aya Kawano, Hitoshi Kuma, Junichi Katano