Plastic and nonmetallic article shaping or treating: processes – Outside of mold sintering or vitrifying of shaped inorganic... – Controlling or directing flow of heated gas or exhaust...
Reexamination Certificate
2007-12-04
2007-12-04
Lopez, Carlos (Department: 1731)
Plastic and nonmetallic article shaping or treating: processes
Outside of mold sintering or vitrifying of shaped inorganic...
Controlling or directing flow of heated gas or exhaust...
C977S763000
Reexamination Certificate
active
10678772
ABSTRACT:
A method for manufacturing oriented arrays of ceramic or metal oxide nanostructures, such as titania (TiO2) nanofibers. The nanofibers are formed on the surface of a body that is first sintered at a temperature in the range of about 1,100 to about 1,400 degrees Celsius. Subsequently, the surface is exposed to an H2-bearing gas, such as H2and N2in a ratio of about 5:95 at about 700 degrees Celsius for about 8 hours. During heat treatment in the gas phase reaction, sintered titania grains transform into arrays of nanofibers oriented in the same crystallographic direction.
REFERENCES:
patent: 4900698 (1990-02-01), Lundsager
patent: 5177034 (1993-01-01), Jean et al.
patent: 5205991 (1993-04-01), Avery et al.
patent: 5406058 (1995-04-01), Lipp
patent: 5538681 (1996-07-01), Wu
patent: 5763344 (1998-06-01), Komatsu
patent: 5814262 (1998-09-01), Ketcham et al.
patent: 6159831 (2000-12-01), Thrush et al.
patent: 6231744 (2001-05-01), Ying et al.
patent: 6270571 (2001-08-01), Iwasaki et al.
patent: 6313015 (2001-11-01), Lee et al.
patent: 6359288 (2002-03-01), Ying et al.
patent: 6596078 (2003-07-01), Konakahara et al.
patent: 6596187 (2003-07-01), Coll et al.
patent: 2001/0000889 (2001-05-01), Yadav et al.
patent: 2002/0001977 (2002-01-01), Gole et al.
patent: 2003/0126742 (2003-07-01), Ting et al.
patent: 1358670 (2002-07-01), None
patent: 1419846 (2003-05-01), None
patent: 10064865 (2002-07-01), None
patent: 2000-203998 (2000-07-01), None
patent: 2000203998 (2000-07-01), None
patent: 2002-34531 (2002-02-01), None
patent: 2002034531 (2002-02-01), None
patent: 2002-67000 (2002-03-01), None
patent: 2002067000 (2002-03-01), None
patent: 2002-154819 (2002-05-01), None
patent: 2002154819 (2002-05-01), None
patent: 2003-71799 (2003-03-01), None
patent: 2003071799 (2003-03-01), None
patent: 2003-191200 (2003-07-01), None
patent: 2003191200 (2003-07-01), None
patent: 444067 (2001-07-01), None
patent: WO 98/48456 (1998-10-01), None
patent: WO 03/053851 (2003-07-01), None
M. P. Harold, et al.; Catalysis with inorganic membranes; MRS Bulletin, 1994. 19(4): p. 34-9.
Xagas, Androulaki, Hiskia, & Falaras; Preparation, fractal surface morphology and photocatalytic properties of TiO2 films. Thin Solid Films, 1999. 357(2): p. 173-178.
O.K.Varghese, et al.; Crystallization and high-temperature structural stability of titanium oxide nanotube arrays. Journal of Materials Research, 2003. 18(1): p. 156-165.
O'Regan & Graetzel; A low cost, high-efficiency solar cell based on dye-sensitized colloidal titanium dioxide films. Nature (London, United Kingdom), 1991. 353(6346): p. 5017-18.
Marguerettaz & Fitzmaurice; Heterosupramolecular chemistry: long-lived charge trapping by vectorial electron flow in a heterotriad. Journal of the American Chemical Society, 1994 116(11): p. 5017-18).
Kasuga, etal.; Formation of Titanium Oxide Nanotube. Langmuir, 1998. 14(12): p. 3160-3163.
Kasuga, etal.; Titania nanotubes prepared by chemical processing. Advanced Materials (Weinheim, Germany), 1999. 11(15): p. 1307-1311.
Gong, etal.; Titanium oxide nanotube arrays prepared by anodic oxidation. Journal of Materials Research, 2001. 16(12): p. 3331-3334.
Michailowski, Almawlawi, Cheng & Moskovits; Highly regular anatase nanotuble arrays fabricated in porous anodic templates. Chemical Physics Letters, 2001. 349 (1,2): p. 1-5.
Imai, etal.; Direct preparation of anatase TiO2 nanotubes in porous alumina membranes. Journal of Materials Chemistry, 1999. 9(12): p. 2971-2972.
Du, etal.; Preparation and structure analysis of titanium oxide nanotubes. Applied Physics Letters, 2001, 79(22): p. 3702-3704.
Sugiura, Yoshida & Minoura; Designing a TiO2 nano-honeycomb structure using photoelectrochemical etching. Electrochemical and Solid-State Letters, 1998. 1(4): p. 175-177.
Imhof & Pine; Ordered Macroporous materials by emulsion templating. Nature(London), 1997. 389(6654): p. 948-951.
Barin; Thermochemical Data of Pure Substances. ed., ed. vol. 48, 573, 620, 622, 700, 702, 703, 1213, 1690-1696, 1775, 1778-1780. 1995, Weinheim, Germany: VCH Verlagsgesellschaft.
Lynch & Bullard; Phase equilibria in the titanium-oxygen system. Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, 1997, 28B(3): p. 447-453.
Catlow; Defect clustering in nonstoichiometric oxides, in Nonstoichiom. Oxides, O. Sorensen, Editor^Editors. 1981, Academic Press, Inc.: New York. p. 61-98.
Akbar Sheikh A.
Sandhage Kenneth H.
Yoo Sehoon
Foster Jason H.
Kremblas, Foster Phillips & Pollick
Lopez Carlos
The Ohio State University Research Foundation
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