Inorganic Luminescent Compositions With Organic Nonluminescent Material Patents (Class 252/301.36)
  • Patent number: 6855196
    Abstract: An ink for a display panel effective in reducing the uneven adhesion of the ink is applied by an ink application apparatus using an inkjet method to form a structural layer (e.g. reflective layer, phosphor layer) of a display panel such as a plasma display panel. The ink is delivered through a nozzle of the ink application apparatus and includes a powder material used in forming the structural layer, water or a water-miscible solvent, a binder formed from a water-soluble resin, and a plasticizer. The flexibility retained by the ink, even after the ink is applied, allows for leveling of the applied ink to occur and uneven adhesion to be reduced as a result.
    Type: Grant
    Filed: April 16, 2001
    Date of Patent: February 15, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroyuki Kawamura, Keisuke Sumida, Shigeo Suzuki
  • Patent number: 6852252
    Abstract: The present invention relates to incorporating metal nanoshells specifically designed to interact with triplet excitons in polymers. By interacting with triplet excitons, the rate of photo-oxidation can be slowed and the density of luminescence-quenching traps can be reduced.
    Type: Grant
    Filed: April 6, 2001
    Date of Patent: February 8, 2005
    Assignee: William Marsh Rice University
    Inventors: Nancy J. Halas, Gregory David Hale
  • Patent number: 6835326
    Abstract: A fluorescent ink composition comprising functionalized fluorescent nanocrystals, an aqueous-based ink carrier comprising water or a water-based solution, and a binder.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: December 28, 2004
    Assignee: BioCrystal, Ltd.
    Inventor: Emilio Barbera-Guillem
  • Publication number: 20040231554
    Abstract: The present invention provides a fluorescence ink having a high fluorescence intensity, and an ink jet recording method using the same. The ink contains a first fluorescent coloring material that emits fluorescence at a predetermined fluorescence wavelength to be used for measurement or determination with excitation at a predetermined excitation wavelength, a second fluorescent coloring material that emits fluorescence on excitation at the predetermined excitation wavelength, where the excitation spectrum of the first coloring material in the ink to obtain the fluorescence at the predetermined emission wavelength has a peak wavelength range next to the predetermined fluorescence wavelength, and the emission fluorescence spectrum of the second coloring material has an emission wavelength region substantially including at least the above peak wavelength range.
    Type: Application
    Filed: June 14, 2004
    Publication date: November 25, 2004
    Applicant: Canon Kabushiki Kaisha
    Inventors: Masako Udagawa, Sadayuki Sugama, Shoji Koike, Makoto Aoki, Akira Nagashima, Shinichi Hakamada
  • Patent number: 6818153
    Abstract: Photocurable luminescent polymers are prepared from thermosetting unsaturated polyesters, suspending fillers, phosphorescent pigments and photocatalysts and utilized to make gel coated articles and molded, cast and fiberglass reinforced plastic (FRP) articles. The luminescent polymers show bright and long-lasting photoluminescent afterglow, strong thermostimulation of afterglow by heat and electroluminescent properties.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: November 16, 2004
    Inventor: Peter Burnell-Jones
  • Publication number: 20040214927
    Abstract: Color concentrate compositions are disclosed, which contain colorant(s), binder, and polymer compatible with the base polymer to which the concentrate is intended to be added. The colorant is preferably one or more pigments. The compatible polymer preferably is the same polymer as the base polymer, although not necessarily the same molecular weight. The binder also serves as a surfactant to protect the compatible polymer. The presence of the compatible polymer in the concentrate enhances pellet integrity and adds the function of rheology modification to the base polymer when the concentrate is added.
    Type: Application
    Filed: January 23, 2004
    Publication date: October 28, 2004
    Inventor: Norman E. Nitzsche
  • Publication number: 20040188655
    Abstract: A fluorescent material of terbium aluminum garnet has a formula (Tb3−x−yCexRey) (Al5−zO12Mez), wherein 0<x≦0.8, 0<y≦2.0, 0<z≦1.0, wherein Re is at least one of gadolinium (Gd), rubidium (Rb), thulium (Tm), praseodymium (Pr), samarium (Sm), europium (Eu), dysprosium (Dy), holmium (Ho), erbium (Er), ytterbium (Yb), lutetium (Lu), strontium (Sr), yttrium (Y), vanadium (V), and chromium (Cr), and wherein Me is silicone that is added or substituted. A blue light-emitting diode may be used as an exciting light source for exciting the fluorescent material to generate an excited light. The excited light and the exciting light are mixed to generate a pure white light. The fluorescent material may be produced by a solid reaction method, a combustion method, or a synchronous precipitation method.
    Type: Application
    Filed: January 22, 2004
    Publication date: September 30, 2004
    Inventors: Jui-Kung Wu, Tai-Yu Chen, Chao-Lung Huang, Chao-Yuan Cheng
  • Publication number: 20040173807
    Abstract: A cerium-doped garnet phosphor including a second phase of an alkali metal or alkaline earth metal aluminate. The second phase imparts improved emission efficiency but without changing the wavelength of emission. These phosphors are useful to form a white light source together with a blue or ultraviolet light-emitting LED. The phosphors are applied to the LED by forming a phosphor slurry with a polymerizable material in a solution, coating the exposed surface of the LED with a predetermined amount of the slurry, and polymerizing the polymerizable material.
    Type: Application
    Filed: September 17, 2003
    Publication date: September 9, 2004
    Inventors: Yongchi Tian, Diane Zaremba, Perry Niel Yocom
  • Publication number: 20040155517
    Abstract: The present invention is directed to self-assembled compositions forming one dimensional structures that include one or more guest species and method for making such materials. The self-assembling molecules form a self-assembled gel structure that is birefringent and made up from one dimensional structures like nanoribbons with the guest species dispersed throughout the gel. The guest species include nanocrystals, molecules, or other nanometer sized compounds. A ribbon polymer-inorganic nanocrystal hybrid, and a method of creating a ribbon polymer-inorganic crystal hybrid as well as a method of ordering the same to form an ultraviolet lasing media is disclosed.
    Type: Application
    Filed: July 23, 2003
    Publication date: August 12, 2004
    Inventors: Samuel I. Stupp, Leiming Li, Elia Beniash, Eugene R. Zubarev
  • Patent number: 6773628
    Abstract: A liquefied color phosphorescent material consisting of a mixture which comprises a stock solution; a colorant; a color-emitting phosphorescent fine pigment particle having an average particle diameter of 7 &mgr;m or less; and an additive for stably dispersing pigments containing a cellulose-based synthetic resin, silica-based powder, cyclohexanone, isophorone and mineral spirit. The pigment particles of colorant and the color-emitting phosphorescent fine pigment particle are enabled to be always maintained in a substantially uniform dispersion state in the stock solution, thereby making it possible to attain a desired emitting color and to coat the phosphorescent material without necessitating the under-coating using a color paint.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: August 10, 2004
    Assignee: Turn On Co., Ltd.
    Inventor: Takashi Kinno
  • Publication number: 20040149958
    Abstract: An improved coated phosphor filler for an optical device includes a plurality of individual phosphor filler particles, and a coating layer having a plastic substance coated on each of the phosphor filler particles.
    Type: Application
    Filed: January 21, 2004
    Publication date: August 5, 2004
    Inventor: Bee Yin Chua
  • Patent number: 6770220
    Abstract: Luminescent microparticles and nanoparticles are provided for use either as internal standards for referencing fluorescent signals, or as markers for detecting biomolecules. Luminescence dyes are incorporated in inert form into solid materials such that they are protected from the influence of chemical and biological compounds in aqueous sample constituents. The photophysical characteristics of the dyes (spectral characteristics, luminescence quantum efficiency, luminescence fading time and polarization) remain unaffected. The surface of the nanoparticles and microparticles can be provided with reactive surfaces in order to enable covalent coupling of biochemicals or to eliminate aggregation.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: August 3, 2004
    Assignee: Presens Precision Sensing GmbH
    Inventor: Ingo Klimant
  • Publication number: 20040129922
    Abstract: This invention provides a radiation detector using a scintillator having both a strong luminescence intensity and a short time constant.
    Type: Application
    Filed: June 23, 2003
    Publication date: July 8, 2004
    Inventors: Kengo Shibuya, Masanori Koshimizu, Yuko Takeoka, Keisuke Asai
  • Publication number: 20040115563
    Abstract: A radiation-sensitive coating material, in addition to a base polymer, has a solvent and a radiation-active substance which forms an acid on irradiation by light (including energetic electrons or ions), a fluorescent substance which alters its fluorescence property subject to a change in the acid content of its surroundings. In a process for exposing a substrate coated with the coating material at least one sensor in the exposure chamber of the exposure apparatus measures the intensity of the change in fluorescence spectrum as a function of time during the exposure operation. From the course of intensity at the time of an individual line of the fluorescence spectrum or the intensity integrated over a wavelength interval it is possible to determine the endpoint of the exposure operation by way of electronic algorithms. Deviations from experimentally determined ideal curves of the intensity course provide information on erroneous functions in the course of coating material application and exposure.
    Type: Application
    Filed: September 29, 2003
    Publication date: June 17, 2004
    Inventors: Jenspeter Rau, Siegfried Schwarzl, Stefan Wurm
  • Publication number: 20040113125
    Abstract: A fluorescent lamp cover which comprises a transparent resin containing a fluorescent brightening agent so as to cut off 90% or more of the rays of 410 nm or less, wherein the fluorescent brightening agent is represented by the following formula (I): 1
    Type: Application
    Filed: December 8, 2003
    Publication date: June 17, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Takashi Usami, Teruo Nagano, Tadahisa Sato, Katsuyoshi Yamakawa
  • Patent number: 6749773
    Abstract: A phosphorescent ink composition suitable for use with an ink-jet printer and method of producing said composition are provided. The composition includes a mixture of an effective amount of a phosphorescent powder and a liquid ink vehicle. A method of producing the phosphorescent ink-jet ink composition includes the step of mixing an effective amount of a phosphorescent powder with a liquid ink vehicle. The ink composition may optionally include a dispersing agent for maintaining disbursement of the phosphorescent powder in the ink vehicle. The composition may also include a colorant.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: June 15, 2004
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Jeffrey V. Emanuel
  • Publication number: 20040108491
    Abstract: A method of making a glow in the dark puff heat transfer material and a composition of glow in the dark puff heat transfer material are presented in this invention. Unlike many prior art heat transfer methods, the heat transfer method utilized in the present invention adheres to OSHA regulations 29 CFR 1910.1017. The process of making the glow in the dark puff heat transfer material comprises the steps of applying one or more layers of a specific glowing material between the colors layers. The composition comprises specific amounts of a glow clear base, glow puff material, translucent inks, and an effective amount of glowing material. A printable adhesive base may be added to the composition if the glowing material is not mixed with the glow clear base or with the glow puff material. The composition is printed on a paper substrate and cured through a conventional dryer.
    Type: Application
    Filed: December 5, 2002
    Publication date: June 10, 2004
    Inventor: Nidal Alif
  • Publication number: 20040107868
    Abstract: Europium compounds represented by the general formula (1) and water-base ink compositions containing the same: 1
    Type: Application
    Filed: November 24, 2003
    Publication date: June 10, 2004
    Inventors: Masaaki Ikeda, Junko Yoshioka, Yasuo Shirasaki, Noriko Kiyoyanagi, Yasuyuki Kitayama
  • Patent number: 6744194
    Abstract: A light emitting diode is disclosed which is small and inexpensive and can emit a variety of intermediate colors of light with a single light emitting element chip and whose current consumption is small. This invention provides a light emitting diode which comprises: a substrate; electrodes formed on the substrate; a light emitting element chip connected to the electrodes and mounted on an upper surface of the substrate; a resin material sealing an upper surface side of the light emitting element chip; and fluorescent particles and coloring particles scatteringly distributed in the resin material. The coloring particles absorb a part of wavelengths of light from the light emitting element chip and a part of wavelengths of light that have been changed by the fluorescent particles.
    Type: Grant
    Filed: September 17, 2001
    Date of Patent: June 1, 2004
    Assignee: Citizen Electronics Co., Ltd.
    Inventors: Koichi Fukasawa, Hirohiko Ishii
  • Patent number: 6716368
    Abstract: The present invention is drawn to a transparent or translucent thermoplastic composition comprising a thermoplastic polycarbonate resin and a phosphorescent phosphor with an aluminate matrix expressed by MAl2O4 in which M is calcium, strontium or barium. Said phosphorescent phosphor is present in a quantity of 0.01 to 2.0% by weight with respect to the quantity of polycarbonate resin and possesses a median particle size of less than 10 micrometer. Forming an object by injection molding using said transparent or translucent thermoplastic composition is also disclosed.
    Type: Grant
    Filed: August 6, 2001
    Date of Patent: April 6, 2004
    Assignee: General Electric Company
    Inventors: Philippe Schottland, Michael W. Brown, Steven R. Peak
  • Patent number: 6699406
    Abstract: A rare earth element doped composition having a dopant concentration of up to about 60 mole percent of one or more rare earth elements selected from Tb, Dy, Ho, Er, Tm, Yb and Lu, wherein the composition is optically transparent to wavelengths at which excitation, fluorescence or luminescence of the rare earth elements occur. Method for making the compositions, composite materials having dispersed therein the compositions and luminescent devices containing optical or acoustical elements formed from the composite materials are also disclosed.
    Type: Grant
    Filed: March 19, 1999
    Date of Patent: March 2, 2004
    Assignee: Rutgers, The State University
    Inventors: Richard E. Riman, John Ballato
  • Patent number: 6699598
    Abstract: Laminar body comprising a substrate, and applied thereto on one or both sides, at least one layer containing an enamel, wherein the layer or layers containing an enamel contains at least one phosphor.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: March 2, 2004
    Assignee: Honeywell International Inc.
    Inventors: Annett Bretschneider, Wolfgang Kuhn, Jurgen Wieczoreck, Andreas Winterfeldt
  • Patent number: 6695905
    Abstract: The invention describes luminescent optically variable pigments (OVP), methods for obtaining such pigments, as well as the use of such pigments as security elements in inks, coatings and articles. The luminescence centers are preferably incorporated into the dielectric material of the OVP's optical<i>Fabry-Perot</i> resonance cavity, allowing for the machine-discrimination of luminescent OVP from simple mixtures of luminescents and non-luminescent OVP.
    Type: Grant
    Filed: August 14, 2002
    Date of Patent: February 24, 2004
    Assignee: SICPA Holding S.A.
    Inventors: Olivier Rozumek, Edgar Müller
  • Patent number: 6692659
    Abstract: Thermoplastic composition comprising a thermoplastic resin and a phosphorescent pigment with a aluminate matrix expressed by M—Al in which M is at least one metal element selected from calcium, strontium and barium and Al represents an aluminate group, wherein the pigment has been coated with a silicone oil. Objects formed by injection molding of the thermoplastic resin compositions. The compositions of the invention exhibit improved melt flow stability and suffer less from graying upon compounding them in an extruder.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: February 17, 2004
    Assignee: General Electric Company
    Inventors: Michael W. Brown, David Rosendale, Philippe Schottland
  • Publication number: 20040016908
    Abstract: The wavelength-converting casting composition is based on a transparent epoxy casting resin with a luminous substance admixed. The composition is used in an electroluminescent component having a body that emits ultraviolet, blue or green light. An inorganic luminous substance pigment powder with luminous substance pigments is dispersed in the transparent epoxy casting resin. The luminous substance is a powder of garnets, thiogallates, aluminates, or orthosilicates doped with rare earths, and preferably Ce-doped phosphors. The luminous substance pigments have particle sizes≦20 &mgr;m and a mean grain diameter d50<5 &mgr;m.
    Type: Application
    Filed: July 21, 2003
    Publication date: January 29, 2004
    Inventors: Klaus Hohn, Alexandra Debray, Peter Schlotter, Ralf Schmidt, Jurgen Schneider
  • Patent number: 6680116
    Abstract: A luminescent fiber is described comprising at least one fiber-forming material with at least one inorganic luminophor pigment dispersed therein, characterized in that the inorganic luminophor pigment has an average particle size of about 1 to 30 pm, and wherein the luminophor pigment produces at least in part a phosphorescence or fluorescent effect on excitation by radiation.
    Type: Grant
    Filed: November 20, 2002
    Date of Patent: January 20, 2004
    Assignee: Honeywell International Inc.
    Inventors: Alfred Siggel, Thomas Potrawa, Hermann Langheim
  • Patent number: 6676852
    Abstract: Polymer composition comprising 50-99% by weight of a thermoplastic resin or a blend of thermoplastic resins, 1-50% by weight of a graft copolymer comprising a rubbery graft base upon which one or more monomers have been grafted, the quantities of (a) and (b) being calculated with respect to the sum of (a) and (b) taken together; and a phosphorescent pigment with an aluminate matrix expressed by M-Al, in which M is at least one metal element selected from calcium, strontium and barium and Al represents an aluminate group. The aluminate group can be for example a Al2O4-group. The invention also relates to concentrates that are suitable for making the polymer composition of the invention.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: January 13, 2004
    Assignee: General Electric Company
    Inventors: Michael W. Brown, Jeremy D. Hurst, Steven Richard Peak, Philippe Schottland, Theodorus J. M. Timmerman
  • Publication number: 20040000662
    Abstract: A rare earth element doped composition having a dopant concentration of up to about 60 mole percent of one or more rare earth elements selected from Tb, Dy, Ho, Er, Tm, Yb and Lu, wherein the composition is optically transparent to wavelengths at which excitation, fluorescence or luminescence of the rare earth elements occur. Method for making the compositions, composite materials having dispersed therein the compositions and luminescent devices containing optical or acoustical elements formed from the composite materials are also disclosed.
    Type: Application
    Filed: March 19, 1999
    Publication date: January 1, 2004
    Inventors: RICHARD E. RIMAN, JOHN BALLATO
  • Publication number: 20030227002
    Abstract: Polymer composition comprising 50-99% by weight of a thermoplastic resin or a blend of thermoplastic resins, 1-50% by weight of a graft copolymer comprising a rubbery graft base upon which one or more monomers have been grafted, the quantities of (a) and (b) being calculated with respect to the sum of (a) and (b) taken together; and a phosphorescent pigment with an aluminate matrix expressed by M-Al, in which M is at least one metal element selected from calcium, strontium and barium and Al represents an aluminate group. The aluminate group can be for example a Al2O4-group. The invention also relates to concentrates that are suitable for making the polymer composition of the invention.
    Type: Application
    Filed: May 31, 2002
    Publication date: December 11, 2003
    Inventors: Michael W. Brown, Jeremy D. Hurst, Steven Richard Peak, Philippe Schottland, Theodorus J.M. Timmerman
  • Publication number: 20030227003
    Abstract: Thermoplastic composition comprising a thermoplastic resin and a phosphorescent pigment with a aluminate matrix expressed by M—Al in which M is at least one metal element selected from calcium, strontium and barium and Al represents an aluminate group, wherein the pigment has been coated with a silicone oil.
    Type: Application
    Filed: May 31, 2002
    Publication date: December 11, 2003
    Inventors: Michael W. Brown, David Rosendale, Philippe Schottland
  • Publication number: 20030227004
    Abstract: An aerosol composition, and the method of making the same, having flourescent pigments, suitable for spray application to a substrate surface and rapid air drying, where said spray application is transparent when applied, and also when dried, but where the pigments will reflect visible light under long wave uv or black light exposure. This aerosol composition is removable using soap and water, making this composition useful in numerous settings where a nonpermanent paint is desired. The paint is virtually invisible following application, but appears to brilliantly glow under black light exposure, creating a medium suitable for artistic endeavors. The composition comprises at least one alcohol, comprising 30 to about 40 percent by weight of the total aerosol composition, a polymer resin, comprising an acrylic copolymer, comprising 5 to 10 percent by weight of the total aerosol composition, a propellant, comprising 40 to 60% by weight of the total aerosol composition, pigment, comprising 0.
    Type: Application
    Filed: June 6, 2002
    Publication date: December 11, 2003
    Inventor: Daniel A. Dopps
  • Publication number: 20030222247
    Abstract: Method of manufacturing a luminescent product exhibiting a daytime color and a glow in the dark color, where the glow in the dark color exhibits long term glow in the dark characteristics after absorbing energy from light sources. At least one resin material and at least one antisettling agent are mixed and combined with a plurality of luminescent crystals capable of glowing in the dark after the absorption of light. This mixture is combined with solvents, colorants, and additives to produce a luminescent material having a daytime color that differs from its glow-in-the-dark color.
    Type: Application
    Filed: January 28, 2003
    Publication date: December 4, 2003
    Inventors: Everly Dean Putman, Gary Leroy Butler
  • Patent number: 6630307
    Abstract: The use of semiconductor nanocrystals as detectable labels in various chemical and biological applications is disclosed. The methods find use for detecting a single analyte, as well as multiple analytes by using more than one semiconductor nanocrystal as a detectable label, each of which emits at a distinct wavelength.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: October 7, 2003
    Assignee: Quantum Dot Corporation
    Inventors: Marcel P. Bruchez, R. Hugh Daniels, Stephen A. Empedocles, Vince E. Phillips, Edith Y. Wong, Donald A. Zehnder
  • Publication number: 20030173540
    Abstract: A process for incorporating a long persistent phosphor within a settable material includes firing a doped phosphor to obtain a phosphor having a persistence that ranges from minutes to hours. The fired phosphor is then ground into a phosphor particulate having a mean domain size. Typical particulate mean domain size ranges from 1 to 60 microns. The phosphor particulate is thereafter encapsulated within a water impervious coating material such as silicon oxide or fluoride. The coated phosphor particulate is then mixed in a specified volume ratio within the settable material while the settable material is in a pre-set state. Typical formulation ratios range from 0.1 to 30 volume percent of particulate. A method of forming a phosphorescent solid article is also disclosed.
    Type: Application
    Filed: February 19, 2003
    Publication date: September 18, 2003
    Inventors: Bradford K Mortz, Robert H Miller
  • Patent number: 6613455
    Abstract: The present invention provides an electroluminescent device comprising a transparent conductive layer, a binder layer placed on the back surface of the transparent conductive layer, a luminescent-particle layer comprising a substantially single layer of particles containing luminescent particles, which layer is applied on the back surface of the transparent conductive layer through the binder layer, an insulating layer comprising insulating particles, which is placed on the back surface of the luminescent-particle layer, and a rear electrode placed on the back surface of the insulating layer, in which the luminescent particles are embedded in the binder layer, or the luminescent particles are substantially not embedded in the insulating layer.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: September 2, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Kazumi Matsumoto, Mitsuaki Kobayashi, Yoshinori Araki, Hidetoshi Abe
  • Patent number: 6613247
    Abstract: The wavelength-converting casting composition is based on a transparent epoxy casting resin with a luminous substance admixed. The composition is used in an electroluminescent component having a body that emits ultraviolet, blue or green light. An inorganic luminous substance pigment powder with luminous substance pigments is dispersed in the transparent epoxy casting resin. The luminous substance is a powder of garnets, thiogallates, aluminates, or orthosilicates doped with rare earths, and preferably Ce-doped phosphors. The luminous substance pigments have particle sizes ≦20 &mgr;m and a mean grain diameter d50≦5 &mgr;M.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: September 2, 2003
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Klaus Höhn, Alexandra Debray, Peter Schlotter, Ralf Schmidt, Jürgen Schneider
  • Patent number: 6613137
    Abstract: The present invention relates to coating compositions, preferably printing inks for security applications comprising at least one organic resin, at least one pigment and optionally at least one organic solvent. Said pigment comprises glass ceramic composite particles, containing at least one crystalline particle embedded in a glass matrix. Said glass ceramic particles have a particle size in the range of between 0.1 &mgr;m to 50 &mgr;m. Preferably active ions selected from the group of the rare-earth elements are incorporated into the crystalline phase of the composite to provide the glass ceramics with luminescent up- and down-converting characteristics. Glass ceramic luminescent have excellent physical and chemical stability. The glass matrix permits as well the stabilization of the photophysically interesting halide host crystals which have low phonon energies. Such materials provide unusual excitation and emission properties.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: September 2, 2003
    Assignee: SICPA Holding S.A.
    Inventors: Philipp Egger, Edgar Müller
  • Publication number: 20030155553
    Abstract: A process for incorporating a long persistent phosphor within a non-settable material includes firing a doped phosphor to obtain a phosphor having a persistence that ranges from minutes to hours. The fired phosphor is then ground into a phosphor particulate having a mean domain size. Typical particulate mean domain size ranges from 1 to 60 microns. The phosphor particulate is thereafter encapsulated within a water impervious coating material such as silicon oxide or fluoride. The coated phosphor particulate is then mixed in a specified volume ratio within the non-settable material. Typical formulation ratios range from 0.1 to 30 volume percent of particulate.
    Type: Application
    Filed: February 19, 2003
    Publication date: August 21, 2003
    Inventors: Bradford K. Mortz, Robert H. Miller
  • Patent number: 6599444
    Abstract: Luminescent polymers are prepared from thermosetting unsaturated polyesters, suspending fillers and phosphorescent pigments and utilized to make gel coated articles and molded, cast and fiberglass reinforced plastic (FRP) articles. The luminescent polymers show bright and long-lasting photoluminescent afterglow, strong thermostimulation of afterglow by heat and electroluminescent properties. The preferred thermosetting unsaturated polyester resins are prepared by condensing mixtures of ethylenically unsaturated and aromatic dicarboxylic acids and anhydrides with dihydric alcohols and a polymerizable vinylidene monomer. Preferred suspending fillers and thixotropic modifiers include silica, microspheres, glass fibers and other short fibers, nepheline syenite, feldspar, mica, pumice, magnesium sulfate, calcium carbonate, bentonite and the various clays and thixotropic modifiers and mixtures thereof.
    Type: Grant
    Filed: January 18, 2001
    Date of Patent: July 29, 2003
    Assignee: Orion 21 A.D. Pty. Ltd.
    Inventor: Peter Burnell-Jones
  • Patent number: 6592780
    Abstract: The wavelength-converting casting composition is based on a transparent epoxy casting resin with a luminous substance admixed. The composition is used in an electroluminescent component having a body that emits ultraviolet, blue or green light. An inorganic luminous substance pigment powder with luminous substance pigments is dispersed in the transparent epoxy casting resin. The luminous substance is a powder of Ce-doped phosphors and the luminous substance pigments have particle sizes ≦20 &mgr;m and a mean grain diameter d50≦5 &mgr;m.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: July 15, 2003
    Assignee: Osram Opto Semiconductors GmbH
    Inventors: Klaus Höhn, Alexandra Debray, Peter Schlotter, Ralf Schmidt, Jürgen Schneider
  • Patent number: 6589450
    Abstract: The present invention relates to a material comprising a matrix, apatite and at least one europium composite compound of the general formula MexmMy3Rzn, wherein mx+3y=nz; Mexm=Mex′m′+Mex″m″+ . . . ; Rzn=Rz′n′+Rz″n″+ . . . ; mx=m′x′+m″x″+ . . . ; nz=n′z′+n″z″+ . . . ; x≧1.0 ≧y≧0.01. Me represents yttrium, lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, dysprosium, holmium, erbium, ytterbium, aluminum, bismuth, tin, titanium, manganese, calcium, barium, zinc, cadmium, sodium, potassium, rubidium, cesium, R represents oxygen, sulfur, fluorine, bromine, phosphorus, boron, vanadium, molybdenum, tungsten, germanium or compounds thereof, and m and n represent the charge of a Me or R ion, respectively. The composition for the production of the material comprises (wt. % ) apatite 0.01-10.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: July 8, 2003
    Inventors: Ljubov Robertovna Bratkova, Robert Nikolaevich Schelokov
  • Publication number: 20030122107
    Abstract: A photoluminescent thermoplastic multi-component fiber comprising a pigmented component and processing enhanced luminescence and mechanical properties. Most suitably, the pigmented component comprises between 5% and 30% by weight of photoluminescent pigment and the pigmented component is between 20% and 50% by weight of the multi-component fiber. The multi-component fiber can be formed from either POY or FDY, and the multi-component fiber can have many different cross section shapes including sheath/core. These single component or multi-component fibers can be made into a variety of fabrics. Additionally, single component or multi-component fibers can also be formed into single or multi-component meltblown and spunbonded fabrics.
    Type: Application
    Filed: June 26, 2002
    Publication date: July 3, 2003
    Inventors: Behnam Pourdeyhimi, Trevor J. Little
  • Publication number: 20030111642
    Abstract: A phosphor paste composition for plasma display panels (PDP) is provided which comprises a phosphor dispersed in an organic paste comprising a solvent, a binder, at least one dispersant comprising stearic acid, and a plasticizer. The paste compositions are very stable and have desirable screen-printing properties. In addition, the phosphor contained in the paste retains a high percentage of its initial brightness following binder burn-out.
    Type: Application
    Filed: December 13, 2001
    Publication date: June 19, 2003
    Inventors: Raj P. Singh, Robert G. Mendenhall, Diane C. Seymour
  • Patent number: 6576155
    Abstract: A fluorescent ink composition comprising functionalized fluorescent nanocrystals, an aqueous-based ink carrier comprising water or a water-based solution, and a binder.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: June 10, 2003
    Assignee: Biocrystal, Ltd.
    Inventor: Emilio Barbera-Guillem
  • Publication number: 20030096056
    Abstract: An ink for a display panel effective in reducing the uneven adhesion of the ink is applied by an ink application apparatus using an inkjet method to form a structural layer (e.g. reflective layer, phosphor layer) of a display panel such as a plasma display panel. The ink is delivered through a nozzle of the ink application apparatus and includes a powder material used in forming the structural layer, water or a water-miscible solvent, a binder formed from a water-soluble resin, and a plasticizer. The flexibility retained by the ink, even after the ink is applied, allows for leveling of the applied ink to occur and uneven adhesion to be reduced as a result.
    Type: Application
    Filed: October 11, 2002
    Publication date: May 22, 2003
    Inventors: Hiroyuki Kawamura, Keisuke Sumida, Shigeo Suzuki
  • Patent number: 6565770
    Abstract: Interference pigment flakes and foils are provided which have luminescent and color-shifting properties. A luminescent material coating structure is provided which partially covers or encapsulates a color-shifting pigment flake, or covers the outer surface of a foil. The pigment flakes can have a symmetrical coating structure on opposing sides of a core layer, can have an asymmetrical coating structure with all of the layers on one side of the core layer, or can be formed with encapsulating coatings around the core layer. The coating structure of the flakes and foils includes a core layer, a dielectric layer overlying the core layer, and an absorber layer overlying the dielectric layer. The luminescent pigment flakes and foils exhibit a discrete color shift so as to have a first color at a first angle of incident light or viewing and a second color different from the first color at a second angle of incident light or viewing.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: May 20, 2003
    Assignee: Flex Products, Inc.
    Inventors: Thomas Mayer, Stacey A. Yamanaka, Jaroslaw Zieba
  • Publication number: 20030085384
    Abstract: Luminescent polymers are prepared from thermosetting unsaturated polyesters, suspending fillers and phosphorescent pigments and utilized to make gel coated articles and molded, cast and fiberglass reinforced plastic (FRP) articles. The luminescent polymers show bright and long-lasting photoluminescent afterglow, strong thermostimulation of afterglow by heat and electroluminescent properties. The preferred thermosetting unsaturated polyester resins are prepared by condensing mixtures of ethylenically unsaturated and aromatic dicarboxylic acids and anhydrides with dihydric alcohols and a polymerizable vinylidene monomer. Preferred suspending fillers and thixotropic modifiers include silica, microspheres, glass fibers and other short fibers, nepheline syenite, feldspar, mica, pumice, magnesium sulfate, calcium carbonate, bentonite and the various clays and thixotropic modifiers and mixtures thereof.
    Type: Application
    Filed: July 31, 2002
    Publication date: May 8, 2003
    Inventor: Peter Burnell-Jones
  • Publication number: 20030085383
    Abstract: Photocurable luminescent polymers are prepared from thermosetting unsaturated polyesters, suspending fillers, phosphorescent pigments and photocatalysts and utilized to make gel coated articles and molded, cast and fiberglass reinforced plastic (FRP) articles. The luminescent polymers show bright and long-lasting photoluminescent afterglow, strong thermostimulation of afterglow by heat and electroluminescent properties.
    Type: Application
    Filed: July 31, 2002
    Publication date: May 8, 2003
    Inventor: Peter Burnell-Jones
  • Patent number: 6559801
    Abstract: An antenna for use with a cellular telephone includes a conductive wire having a binder disposed thereover. The conductive wire may be entirely shaped in the form of a coil or only partially shaped like a coil. The binder is preferably a polymeric material which is clear and transparent. The binder includes a quartz crystal powder, reflective flecks such as mylar, and a fluorescent dye dispersed therein. The binder is applied over the conductive wire and reduces emissions of electromagnetic radiation.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: May 6, 2003
    Inventor: Lisa Davis
  • Patent number: 6548172
    Abstract: Inorganic phosphor particles having a diamond-like carbon coating and the method of making these particles. Inorganic phosphor particles are coated with a diamond-like carbon coating, which can include additive components. The coating is applied in a plasma reactor process.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: April 15, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Moses M. David, Dee Lynn Johnson