Chemistry of inorganic compounds – Rare earth compound
Reexamination Certificate
2006-09-05
2006-09-05
Koslow, C. Melissa (Department: 1755)
Chemistry of inorganic compounds
Rare earth compound
C423S566100, C423S566200, C423S566300, C423S561100, C252S30160S, C252S30140S, C204S157410, C204S157500, C204S157510
Reexamination Certificate
active
07101520
ABSTRACT:
Methods for producing metal/metalloid oxide particles comprise rare earth metals herein include reacting a reactant stream in a gas flow. The reactant stream includes a rare earth metal precursor and an oxygen source. A collection of particles comprising metal/metalloid oxide have an average particle size from about 15 nm to about 1 micron. The metal/metalloid oxide comprises a non-rare earth metal oxide wherein less than about 25 percent of a non-rare earth metal is substituted with a rare earth metal. The metal/metalloid oxide particles can be reacted with H2S or C2S to form corresponding metal/metalloid sulfide particles. The metal/metalloid sulfide particles can be doped with rare earth metals. The particles are useful as phosphors, for example for use in displays.
REFERENCES:
patent: 2603554 (1952-07-01), Calbeck
patent: 2610154 (1952-09-01), Brown, Jr.
patent: 2854413 (1958-09-01), Geary
patent: 2863084 (1958-12-01), Arnott et al.
patent: 2898191 (1959-08-01), Conn et al.
patent: 2968627 (1961-01-01), Wachtel
patent: 3040202 (1962-06-01), Lehmann
patent: 3131025 (1964-04-01), Carnall, Jr. et al.
patent: 3260879 (1966-07-01), Feuer
patent: 3406228 (1968-10-01), Hardy et al.
patent: 3691088 (1972-09-01), Pelton
patent: 3776754 (1973-12-01), Levinos
patent: 3984586 (1976-10-01), Kawarada et al.
patent: 4116864 (1978-09-01), Kagami et al.
patent: 4172920 (1979-10-01), Kanda et al.
patent: 4272397 (1981-06-01), Fukuda et al.
patent: 4275333 (1981-06-01), Kagami et al.
patent: 4340839 (1982-07-01), Fujita et al.
patent: 4478800 (1984-10-01), van der Wal et al.
patent: 4548798 (1985-10-01), Rice
patent: 4680231 (1987-07-01), Yamaura et al.
patent: H429 (1988-02-01), Harris et al.
patent: 4738798 (1988-04-01), Mahler
patent: 4808398 (1989-02-01), Heistand, II
patent: 4842832 (1989-06-01), Inoue et al.
patent: 4921767 (1990-05-01), Datta et al.
patent: 4960654 (1990-10-01), Yoshinaka et al.
patent: 5106828 (1992-04-01), Bhargava et al.
patent: 5128063 (1992-07-01), Kamikubo
patent: 5152973 (1992-10-01), Spencer
patent: 5167990 (1992-12-01), Tono et al.
patent: 5225820 (1993-07-01), Clerc
patent: 5250281 (1993-10-01), Imai et al.
patent: 5264031 (1993-11-01), Palmer et al.
patent: 5279801 (1994-01-01), Colombet et al.
patent: 5306476 (1994-04-01), Jalan et al.
patent: 5390276 (1995-02-01), Tai et al.
patent: 5418062 (1995-05-01), Budd
patent: 5442254 (1995-08-01), Jaskie
patent: 5447708 (1995-09-01), Helble et al.
patent: 5455489 (1995-10-01), Bhargava
patent: 5460701 (1995-10-01), Parker et al.
patent: 5498369 (1996-03-01), Bredol et al.
patent: 5504599 (1996-04-01), Okibayashi et al.
patent: 5527519 (1996-06-01), Miksits et al.
patent: 5578899 (1996-11-01), Haven et al.
patent: 5635154 (1997-06-01), Arai et al.
patent: 5637258 (1997-06-01), Goldburt et al.
patent: 5643496 (1997-07-01), Brese et al.
patent: 5644193 (1997-07-01), Matsuda et al.
patent: 5651712 (1997-07-01), Potter
patent: 5699035 (1997-12-01), Ito et al.
patent: 5770113 (1998-06-01), Iga et al.
patent: 5893999 (1999-04-01), Tamatani et al.
patent: 5952125 (1999-09-01), Bi et al.
patent: 5952665 (1999-09-01), Bhargava
patent: 5958348 (1999-09-01), Bi et al.
patent: 5962343 (1999-10-01), Kasai et al.
patent: 5989514 (1999-11-01), Bi et al.
patent: 6036886 (2000-03-01), Chhabra et al.
patent: 6039894 (2000-03-01), Sanjurjo et al.
patent: 6048616 (2000-04-01), Gallagher et al.
patent: 6090200 (2000-07-01), Gray et al.
patent: 6099798 (2000-08-01), Kambe et al.
patent: 6117363 (2000-09-01), Ihara et al.
patent: 6153123 (2000-11-01), Hampden-Smith et al.
patent: 6180029 (2001-01-01), Hampden-Smith et al.
patent: 6187225 (2001-02-01), Rao
patent: 6193908 (2001-02-01), Hampden-Smith et al.
patent: 6193936 (2001-02-01), Gardner et al.
patent: 6210604 (2001-04-01), Hampden-Smith et al.
patent: 6225007 (2001-05-01), Horne et al.
patent: 6254928 (2001-07-01), Doan
patent: 6290735 (2001-09-01), Kambe et al.
patent: 6319426 (2001-11-01), Bawendi et al.
patent: 6379635 (2002-04-01), O'Brien et al.
patent: 6391273 (2002-05-01), Konrad et al.
patent: 6391494 (2002-05-01), Reitz et al.
patent: 6413489 (2002-07-01), Ying et al.
patent: 6447577 (2002-09-01), Espin et al.
patent: 6589496 (2003-07-01), Yabe et al.
patent: 6645398 (2003-11-01), Hampden-Smith et al.
patent: 6699406 (2004-03-01), Riman et al.
patent: 6749648 (2004-06-01), Kumar et al.
patent: WO 98/37165 (1998-08-01), None
patent: WO 99/23191 (1999-05-01), None
patent: WO 99/46204 (1999-09-01), None
patent: WO 99/50880 (1999-10-01), None
patent: WO 00/46867 (2000-08-01), None
patent: WO 00/54291 (2000-09-01), None
patent: WO 00/66485 (2000-11-01), None
Goldstein et al., Observation of Melting in 30A Diameter CdS NanoCrystals, Met. Res. Soc. Symp. Proc. vol. 206, pp. 271-274, 1991.
Curtin, The Field Emission Display: A New Flat Pane Technology, Conf. Rec. of the 1991 Int'l Display Res. Conf., pp. 12-15. Oct. 1991.
Tissue et al., Synthesis and Characterization of Metal-Oxide Nanocrystals Prepared by CO2—Laser-Heated Vaporization/Condensation, Journal of the SID, vol. 4(3), pp. 213-217, Oct. 1996.
Siegel, Creating Nanophase Materials, Scientific American; 2 pages, Dec. 1996.
J.S. Yoo et al., The Effects of Particle Size and Surface Recombination Rate on the Brightness of Low-Voltage Phosphor, J. App. Phys. 81(6), 2810-2813, Mar. 15, 1997.
El-Shall et al., Synthesis of Nanoparticles by a Laser Vaporization-Controlled Condensation Technique, SPIE, vol. 3123, pp. 98-108, Jul. 1997.
Oshio et al., Firing Technique for Preparing a BaMgAl10O17:Eu2+Phosphor with Controlled Particle Shape and Size, Journal of the Electrochemical Society, 146(1), pp. 392-399, 1999.
Konrad et al., Chemical Vapor Synthesis and Luminescence Properties of Nanocrystalline Cubic Y2O3:Eu, J. Appl. Phys., vol. 86, No. 6, pp. 3129-3133, Sep. 15, 1999.
J.S. Yoo et al., Spherical BaMgAl10O17:Eu2+Phosphor Prepared by Aerosol Pyrolysis Technique for PDP Applications, Journal of the Electrochemical Society, 148(9) H128-H131, 2001.
Ramponi et al., “New Er-doped phosphate glass for ion-exchange active waveguides: accurate determination of the refraction index,” Optical Materials, 14, pp. 292-296.
Lee et al., “Controlled formation of nanoparticles utilizing laser irradiation in a flame and their characteristics,” Applied Physics Letters, vol. 79, No. 15, pp. 2459-2461, Oct. 8, 2001.
Vermelho et al., “The influence of sodium ions on rare-earth solubility in silica-on-silicon SiO2-P2O5glass hosts fabricated by flame hydrolysis deposition,” Proceedings of SPIE, vol. 4277, pp. 381-387, 2001.
Ballato et al., “Fabrication of fibers with high rare-earth concentrations for Fraraday isolator applications,” Applied Optics, vol. 34, No. 30, pp. 6848-6854, Oct. 20, 1995.
Chemical Abstract citation: 127:196928: Photocalorimetric measurement of the quantum efficiencies of phosphors, Zachau, Journ. Luminese. (1997), 72-74, 792-793.
Chemical Abstract citation 111:143246: “Europium-doped strontium aluminum oxide (2SrO 3AI203) and barium calcium aluminum oxide (1.29(Ba,Ca)O,6AI203). Two new blue emitting phosphors,” Smets et al., Journ. Eelectrochem. Soc., (1989), 136(7), 2119-23.
Bender et al., “Synthesis and Fluorescence of Neodymium-Doped Barium Fluoride Nanparticles,” Chem. Mater., vol. 12, No. 7, pp. 1969-1976, 2000.
Chemical Abstract citation 135:144231: Mechanism of thermal degradation of blue BaMgA110017:Eu (BAM) phosphor, Zhou et al., Faguang Xuebao (2000), 21, (4), 345-48.
Jean et al., “Spherical BaMgA110017:eu2+ Phosphor Prepared by Aerosol Pyrolysis Technique for PDP Application,” Jour. Electrochem. Soc., 149 (9), 2001, pp. H128-H131.
Chemical Abstract citation 132:327319: Blue emitting CaA12O4:eu2+ phohors for PDP application, Tanaka et al., Journ. Lumines., (2000) 87-89, 1250-1253.
Chemical Abstract citation “Photoluminescence imaging of phosphor particles using near-field optical microscope with UV light excitation, ” Nishikawa et al. Jour. Microscopy, (1999), 194 (2/3), 415-420.
Dardi Peter S.
Dardi & Associates PLLC
Koslow C. Melissa
NanoGram Corporation
LandOfFree
High luminescence phosphor particles and methods for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High luminescence phosphor particles and methods for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High luminescence phosphor particles and methods for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3613977