Base Material Decomposed Or Carbonized Patents (Class 427/227)
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Patent number: 7628878Abstract: A precursor of a ceramic adhesive suitable for use in a vacuum, thermal, and microgravity environment. The precursor of the ceramic adhesive includes a silicon-based, preceramic polymer and at least one ceramic powder selected from the group consisting of aluminum oxide, aluminum nitride, boron carbide, boron oxide, boron nitride, hafnium boride, hafnium carbide, hafnium oxide, lithium aluminate, molybdenum silicide, niobium carbide, niobium nitride, silicon boride, silicon carbide, silicon oxide, silicon nitride, tin oxide, tantalum boride, tantalum carbide, tantalum oxide, tantalum nitride, titanium boride, titanium carbide, titanium oxide, titanium nitride, yttrium oxide, zirconium diboride, zirconium carbide, zirconium oxide, and zirconium silicate. Methods of forming the ceramic adhesive and of repairing a substrate in a vacuum and microgravity environment are also disclosed, as is a substrate repaired with the ceramic adhesive.Type: GrantFiled: September 15, 2005Date of Patent: December 8, 2009Assignee: COI Ceramics, Inc.Inventors: James A. Riedell, Timothy E. Easler
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Publication number: 20090291224Abstract: A sheet-like substrate (34) is coated with at least one thin film (36?) composed of at least one porous ceramic layer (S?1, S?2, S?3, . . . ). A solution or a suspension of an organic and/or inorganic metal composite as starting material (14) is admixed with a mixed-in, insoluble pore former (18) and the mixture (22) is sprayed on as layer (S?1, S?2, S?3, . . . ) of a thin film (36). The pore former (18) is at least partly thermally decomposed and/or burnt out to form an at least partly open-pored structure. The process is particularly suitable for producing miniaturized devices such as fuel cells and gas sensors.Type: ApplicationFiled: October 30, 2006Publication date: November 26, 2009Applicant: Eidgenossische Technische Hochschule ZurichInventors: Daniel Beckel, Ludwig J. Gauckler
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Publication number: 20090274865Abstract: A sandwich panel core that may be comprised of a lattice structure utilizing a network of hierarchical trusses, synergistically arranged, to provide support and other functionalities disclosed herein. Since this design results in a generally hollow core, the resulting structure maintains a low weight while providing high specific stiffness and strength. Sandwich panels are used in a variety of applications including sea, land, and air transportation, ballistics, blast impulse mitigation, impact mitigation, thermal transfer, ballistics, load bearing, multifunctional structures, armors, construction materials, and containers, to name a few.Type: ApplicationFiled: March 20, 2009Publication date: November 5, 2009Applicant: University of Virginia Patent FoundationInventors: Haydn N.G. Wadley, Gregory W. Kooistra
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Publication number: 20090211518Abstract: A crucible holding member includes a hollow mesh body. The hollow mesh body has an upper end opening and a lower end opening, and includes a plurality of strands woven to be arranged diagonally to a central axis of the hollow mesh body. Each of the strands includes a plurality of carbon fibers. A matrix is filled in the interstices between the carbon fibers.Type: ApplicationFiled: February 19, 2009Publication date: August 27, 2009Applicant: IBIDEN CO., LTD.Inventors: Hideki KATO, Haruhide Shikano, Tomoyuki Ando, Masahiro Yasuda
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Publication number: 20090202742Abstract: This invention relates to organometallic precursor compounds represented by the formula (L)M(L?)2(NO) wherein M is a Group 6 metal, L is a substituted or unsubstituted anionic ligand and L? is the same or different and is a ? acceptor ligand, a process for producing the organometallic precursor compounds, and a method for producing a film, coating or powder from the organometallic precursor compounds.Type: ApplicationFiled: April 22, 2009Publication date: August 13, 2009Inventor: Scott Houston Meiere
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Publication number: 20090169738Abstract: A method of manufacturing a carbon-based tooling for use as the support during melt infiltration processing of a prepreg preform used, for example, to manufacture turbine engine components, comprising forming an admixture of chopped carbon fibers, graphite powder and a high durometer thermosetting organic resin, applying a potion of the admixture at room temperature onto the surface of an aluminum die, initially curing the admixture as applied to the aluminum die for a period of 3-5 hours at a temperature of between about 100 and 200 degrees C., removing the carbon-based tooling from the aluminum die and carbonizing the tooling by heating the initially cured tooling to a temperature of about 750 degrees C for a period of about 40 hours.Type: ApplicationFiled: December 28, 2007Publication date: July 2, 2009Applicant: General Electric CompanyInventors: Paul Edward Gray, Roger Lee Ken Matsumoto
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Dual-phase hard material comprising tungsten carbide, process for the production thereof and its use
Patent number: 7541090Abstract: The invention relates to tungsten carbide powder consisting of powder particles, which have a core comprised of tungsten cast carbide and a covering comprised of tungsten monocarbide, to the production thereof by heating a tungsten cast carbide powder in the presence of a carbon source to a temperature ranging from 1300 to 2000° C., and to the use thereof for coating surfaces of parts subjected to wear and for producing drill bits.Type: GrantFiled: November 16, 2004Date of Patent: June 2, 2009Assignee: H.C. Starck GmbHInventors: Christian Gerk, Klaus-Dieter Wernicke -
Publication number: 20090123645Abstract: A process for making a filter suitable for filtering molten metal comprising (i) forming a slurry comprising (a) particles of a refractory material, (b) a binder and (c) a liquid carrier, (ii) coating a disposable former with a slurry, (iii) drying the coated former, (iv) optionally applying one or more additional coats of a refractory material and/or a binder, optionally with liquid carrier, and drying the one or more additional coats, and (v) firing the coated former to produce the filter, wherein the binder is a carbon rich source selected from one or more of the following classes of materials: pitches, tars and organic polymers that degrade to form carbon on pyrolysis.Type: ApplicationFiled: July 20, 2006Publication date: May 14, 2009Applicant: Foseco International LimitedInventors: David A. Bell, David L. Jones, Kassim Juma, Helmut Jaunich, Andreas Ansorge, Martin Schmidt
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Publication number: 20090007542Abstract: A method for surface treating a titanium gas turbine engine component. The method includes providing a gas turbine engine component having a titanium-containing surface. The component is heated to a temperature sufficient to diffuse carbon into the titanium and below 1000° F. The surface is contacted with a carbon-containing gas to diffuse carbon into the surface to form carbides. Thereafter, the carbide-containing surface is coated with a lubricant comprising a binder and a friction modifier. The binder preferably including titanium oxide and the friction modifier preferably including tungsten disulfide. The coefficient of friction between the surface and another titanium-containing surface is less than about 0.6 in high altitude atmospheres.Type: ApplicationFiled: October 11, 2005Publication date: January 8, 2009Applicant: GENERAL ELECTRIC COMPANYInventor: Robert William Bruce
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Publication number: 20080257638Abstract: A method of producing an acoustic diaphragm includes forming a workpiece having a shape of the acoustic diaphragm by using a natural material which can be carbonized by burning; forming a first film including phenol resin on a surface and an interior of the workpiece; heating the workpiece to bring the phenol resin into a high polymer state; burning the workpiece in a substantially anoxic atmosphere to carbonize the workpiece and the first film; and forming a second film including gelatin on at least one of a surface and an interior of carbonized workpiece.Type: ApplicationFiled: April 1, 2008Publication date: October 23, 2008Inventors: Yoshiaki Suzuki, Yoshiaki Tanaka, Shinichi Hirose
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Patent number: 7437817Abstract: A process for fabricating a ceramic electroactive transducer of a predetermined shape is disclosed. The process comprises the steps of providing a suitably shaped core having an outer surface, attaching a first conductor to the outer surface of the core, coating an inner conductive electrode on the outer surface of the core such that the inner conductive electrode is in electrical communication with the first conductor, coating a ceramic layer onto the inner electrode, thereafter sintering the ceramic layer, coating an outer electrode onto the sintered ceramic layer to produce an outer electrode that is not in electrical communication with the first conductor, and then poling the sintered ceramic layer across the inner electrode and the outer electrode to produce the ceramic electrode.Type: GrantFiled: January 11, 2006Date of Patent: October 21, 2008Assignee: The Penn State Research FoundationInventors: Jindong Zhang, Robert E. Newnham
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Patent number: 7387813Abstract: Structures in the nanoscale and mesoscale domain are provided. The structures typically have a shell which can be comprised of a porous polymeric material such as parylene. The surfaces of the shell can further comprise pendant functional groups that can provide reactive or passive characteristics.Type: GrantFiled: July 7, 2005Date of Patent: June 17, 2008Assignee: Specialty Coating Systems, Inc.Inventors: Rakesh Kumar, Bawa Singh, Brian G. Lewis, Michael T. Marczi
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Patent number: 7306824Abstract: A method for preparing a metal nanocluster composite material. A porous zeolitic material is treated with an aqueous metal compound solution to form a metal ion-exchanged zeolitic material, heated at a temperature ramp rate of less than 2° C./min to an elevated temperature, cooled, contacted with an organic monomer and heating to induce polymerization, and heating the composite material to greater than 350° C. under non-oxidizing conditions to form a metal nanocluster-carbon composite material with nanocluster sizes between approximately 0.6 nm and 10 nm.Type: GrantFiled: February 26, 2004Date of Patent: December 11, 2007Assignee: Sandia CorporationInventor: Eric N. Coker
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Patent number: 7241478Abstract: The present invention relates to an apparatus and process for producing a thin organic film on a substrate using an ultrasonic nozzle to produce a cloud of micro-droplets in a vacuum chamber. The micro-droplets move turbulently within the vacuum chamber, isotropically impacting and adhering to the surface of the substrate. The resulting product has a smooth, continuous, conformal, and uniform organic thin film, when the critical process parameters of micro-droplet size, shot size, vacuum chamber pressure, and timing are well-controlled, and defects such as “orange peel” effect and webbing are avoided. The apparatus includes an improved ultrasonic nozzle assembly that comprises vacuum sealing and a separate, independent passageway for introducing a directed purging gas.Type: GrantFiled: August 27, 2004Date of Patent: July 10, 2007Assignee: BAE Systems Information and Electronic Systems Integration Inc.Inventors: Allister McNeish, Edmund Popp, Mark Brown, Mark W. Leiby, James J. Cerul, Harvey L. Berger
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Patent number: 7232508Abstract: An electrolytic electrode having an interlayer having more excellent peeling resistance and corrosion resistance and longer electrolytic life than conventional electrolytic electrodes and capable of flowing a large amount of current at the industrial level and a process of producing the same are provided. The electrolytic electrode includes a valve metal or valve metal alloy electrode substrate on the surface of which is formed a high-temperature oxidation film by oxidation, and which is coated with an electrode catalyst. The high-temperature oxidation film is integrated with the electrode substrate, whereby peeling resistance is enhanced. Further, by heating the high-temperature oxidation film together with the electrode catalyst, non-electron conductivity of the interlayer is modified, thereby making it possible to flow a large amount of current.Type: GrantFiled: May 6, 2004Date of Patent: June 19, 2007Assignee: Permelec Electrode Ltd.Inventor: Masashi Hosonuma
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Patent number: 7226639Abstract: The subject of the present invention is a method of obtaining fibrous carbon materials by carbonization of cellulosic fibrous materials carried out continuously or batchwise in the presence of at least one organosilicon compound. Characteristically, said organosilicon compound is chosen from the family of crosslinked, cyclic or branched oligomers and resins, which have a number-average molecular mass of between 500 and 10 000 and which consist of units of formula SiO4 (called Q4 units) and units of formula SiOxRy (OR?)z.Type: GrantFiled: December 5, 2000Date of Patent: June 5, 2007Assignee: SNECMA Propulsion SolideInventors: Pierre Olry, Hervé Plaisantin, Sylvie Loison, René Pailler
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Patent number: 7211292Abstract: The method is disclosed for coating or impregnating a metal cutting tool with a metal oxide. The method includes the steps of applying a liquid metal carboxylate composition, or a solution thereof, to a substrate material, and exposing the metal cutting tool to an environment that will cause vaporization or dissipation of any excess carboxylic acids in the liquid metal carboxylate composition and conversion of the metal carboxylates to metal oxides.Type: GrantFiled: June 15, 2004Date of Patent: May 1, 2007Assignee: C3 Intl, LLCInventor: Leonid V. Budaragin
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Patent number: 7175879Abstract: The subject of the present invention is a method of obtaining fibrous carbon materials by carbonization of cellulosic fibrous materials carried out continuously or batchwise in the presence of at least one organosilicon compound. Characteristically, said organosilicon compound is chosen from the family of cyclic, linear or branched polyhydrosiloxanes which are substituted with methyl and/or phenyl groups and the number-average molecular mass of which is between 250 and 10 000, advantageously between 2 500 and 5 000.Type: GrantFiled: December 5, 2000Date of Patent: February 13, 2007Assignee: Snecma Propulsion SolideInventors: Pierre Olry, Sylvie Loison, Mark Kazakov, Alentin Trouchnicov
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Patent number: 7132679Abstract: The present invention provides electrical devices having controlled electrical properties and being formed from nanotube components, together with a method of constructing the devices. In one example, the electrical device is formed from the central nanotube of a zigzag type interconnected between two nanotubes of an armchair type. The method of forming the nanotube structure includes connecting a first end of a zig-zag type nanotube to an end of an armchair type nanotube, and connecting a second end of the zig-zag type nanotube to an end of a second armchair type nanotube.Type: GrantFiled: May 5, 2003Date of Patent: November 7, 2006Inventor: Kia Silverbrook
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Patent number: 7019445Abstract: A process for fabricating a ceramic electroactive transducer of a predetermined shape is disclosed. The process comprises the steps of providing a suitably shaped core having an outer surface, attaching a first conductor to the outer surface of the core, coating an inner conductive electrode on the the outer surface of the core such that the inner conductive electrode is in electrical communication with the first conductor, coating a ceramic layer onto the inner electrode, thereafter sintering the ceramic layer, coating an outer electrode onto the sintered ceramic layer to produce an outer electrode that is not in electrical communication with the first conductor, and then poling the sintered ceramic layer across the inner electrode and the outer electrode to produce the ceramic electrode.Type: GrantFiled: October 10, 2003Date of Patent: March 28, 2006Assignee: The Penn State Research FoundationInventors: Jindong Zhang, Robert E. Newnham
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Patent number: 6899925Abstract: An improved protective coating, for parking meters or other equipment that is subject to environmental deterioration and/or vandalism, having thereon at least a three layer coating of a composite thickness sufficiently thick to avoid pinholes and sufficiently thin to avoid crazing and cracking due to variations in the ambient environment. The coating has a conventional lower layer of zinc on or proximate to the equipment surface (in the alternative the substrate may be a zinc part); a second layer of a thermosetting polymer that has been applied by a powder coating electrostatic method, and a third, top, coating of an epoxysiloxane polymer. The total coating thickness should preferably not exceed about 6 mils.Type: GrantFiled: January 22, 2003Date of Patent: May 31, 2005Inventor: Scott J. Lewin
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Patent number: 6838120Abstract: A method for manufacturing carbon/silicon-carbide composite by a ‘One-shot’ process including carbonization, heat processing, infiltration, and forming an anti-oxidation layer on surface is provided through the steps of: 1) hardening a stacked carbon/phenolic preform; 2) carbonization and heat processing the preform until the temperature reaches at 2300° C.; 3) infiltrating and sintering the liquid metal silicon within the temperature of 1400˜1800° C.; and 4) inducting a compound including SiO2to gas phase and heat processing it while forming an anti-oxidation layer on the surface within temperature range of 2000° C.˜2700° C. (desirably, in the range of higher than 2300° C., and more desirably, at the temperature near 2500° C.). Herein, the carbonization, heat processing, and ultra-high heat processing might be performed at the same time in the step 2) and the step 4) might not be performed.Type: GrantFiled: February 11, 2002Date of Patent: January 4, 2005Assignee: Agency for Defense DevelopmentInventors: Yun Chul Kim, Yong Gu Won, Hyung Sik Lee, Kwang Hyeon Lim, Dong Hyuk Sin
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Patent number: 6835591Abstract: Nanotube films and articles and methods of making the same. A nanotube films produced from a conductive article includes an aggregate of nanotube segments. The nanotube segments contact other nanotube segments to define a plurality of conductive pathways along the article. The nanotube segments may be single walled carbon nanotubes, or multi-walled carbon nanotubes. The various segments may have different lengths and may include segments having a length shorter than the length of the article. The articles so formed may be disposed on substrates, and may form an electrical network of nanotubes within the article itself. Conductive articles may be made on a substrate by forming a nanotube fabric on the substrate, and defining a pattern within the fabric in which the pattern corresponds to the conductive article.Type: GrantFiled: April 23, 2002Date of Patent: December 28, 2004Assignee: Nantero, Inc.Inventors: Thomas Rueckes, Brent M. Segal
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Patent number: 6821559Abstract: A method for preparing particulate materials useful in fabricating thin-film solar cells is disclosed. Particulate materials is prepared by the method include for example materials comprising copper and indium and/or gallium in the form of single-phase, mixed-metal oxide particulates; multi-phase, mixed-metal particulates comprising a metal oxide; and multinary metal particulates.Type: GrantFiled: July 3, 2001Date of Patent: November 23, 2004Inventors: Chris Eberspacher, Karen Lea Pauls
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Patent number: 6815006Abstract: The present invention provides a method for making a ceramic matrix composite comprising forming an infiltrated fiber reinforcement by infiltrating a plurality of plies of a fibrous material with a precursor polymer which decomposes to a substantially pure product selected from the group consisting of a refractory metal carbide and a refractory metal boride, and exposing the infiltrated fiber reinforcement to conditions effective to cure the precursor polymer and to decompose the precursor polymer to said substantially pure product.Type: GrantFiled: March 26, 2002Date of Patent: November 9, 2004Assignee: Southwest Research InstituteInventors: Partha P. Paul, Stuart T. Schwab
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Patent number: 6796793Abstract: A method and device of treating an irregularly shaped article to prepare the article for painting is provided. The device includes a burner which can produce an adjustable flame tongue which can fit into crevices, openings and other irregular topographical features of an item to be painted or otherwise coated. The burner device further provides means to apply a grafting chemical on a freshly oxidized surface. Further, the invention provides means to colorize treated objects so that they may be recognized as having been treated. In another embodiment, the grafting chemicals may be enhanced with electrolytic solutions such that electrostatic methods of painting may be subsequently employed on the item. In an alternate embodiment, the burner is adapted to spray a powder inside of a generally enclosed flame, and is used in conjunction with chop guns to manufacture glass or carbon fiber preforms.Type: GrantFiled: March 27, 2002Date of Patent: September 28, 2004Inventors: Russell Brynolf, Michael D. Elberson
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Patent number: 6743934Abstract: This invention provides raw material compounds for use in CVD which contain organic ruthenium compounds as a main ingredient, the organic ruthenium compounds having two &bgr;-diketones plus one diene, one diamine or two organic ligands which are coordinated with ruthenium. In this invention, the vapor pressures of the organic ruthenium compounds are made preferable by specifying the number of the carbon atoms contained in the above &bgr;-diketones and the types of the above diene etc.Type: GrantFiled: April 17, 2003Date of Patent: June 1, 2004Assignee: Tanaka Kikinzoku Kogyo K.K.Inventors: Masayuki Saito, Takeyuki Sagae
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Patent number: 6716485Abstract: An ablative composition and methods of forming ablative structures are provided that improve char during ablation, prevent combustion during ablation, and which reduce moisture absorption of low temperature ablative (LTA) materials. The ablative composition comprises an intumescent material such as ammonium polyphosphate (APP) that is disposed within an LTA material at the outer surface of the ablative composition. The intumescent material may also be added in increasing amounts throughout the LTA material such that a gradient of intumescent material is formed near the outer surface of the ablative composition for the required amount of thermal protection. Both the LTA material and the intumescent material are applied to a substrate, or an aerospace vehicle structure, preferably in layers using methods such as spray forming or hand troweling.Type: GrantFiled: June 27, 2001Date of Patent: April 6, 2004Assignee: The Boeing CompanyInventors: Jim L. Wong, Velimir Jovanovic
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Patent number: 6685983Abstract: Defect-free dielectric coatings comprised of porous polymeric matrices are prepared using nitrogen-containing polymers as pore-generating agents. The dielectric coatings are useful in a number of contexts, including the manufacture of electronic devices such as integrated circuit devices and integrated circuit packaging devices. The dielectric coatings are prepared by admixing, in a solvent, a polymeric nitrogenous porogen with a high temperature, thermosetting host polymer miscible therewith, coating a substrate surface with the admixture, heating the uncured coating to cure the host polymer and provide a vitrified, two-phase matrix, and then decomposing the porogen. The dielectric coatings so prepared have few if any defects, and depending on the amount and molecular weight of porogen used, can be prepared so as to have an exceptionally low dielectric constant on the order of 2.5 or less, preferably less than about 2.0.Type: GrantFiled: March 14, 2001Date of Patent: February 3, 2004Assignee: International Business Machines CorporationInventors: Craig Jon Hawker, James Lupton Hedrick, Elbert Emin Huang, Victor Yee-Way Lee, Teddie Magbitang, David Mecerreyes, Robert Dennis Miller, Willi Volksen
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Patent number: 6682773Abstract: A method and coating are provided for temporarily protecting a substrate or article during shipping, handling or storage by applying a removable protective coating over at least a portion of the substrate. The substrate may be flat or curved and may have zero, one or more functional coatings. A plurality of substrates with the protective coating of the invention may be arranged in a shipping container so that the protective coating reduces the possibility of damage to the substrate or optional functional coating. In one embodiment, the protective coating is the evaporation or reaction product of an aqueous coating composition containing a polyvinyl alcohol polymer which may be subsequently removed by aqueous washing, thermal decomposition or combustion. In another embodiment, the protective coating is formed by sputtering a substantially carbon coating onto the substrate. The carbon coating is subsequently removed by combustion.Type: GrantFiled: February 22, 2002Date of Patent: January 27, 2004Assignee: PPG Industries Ohio, Inc.Inventors: Paul A. Medwick, Erin Goodreau, Ernest L. Lawton, James J. Finley, George M. Martin, James P. Thiel, Gary J. Marietti, Roger L. Scriven
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Patent number: 6663706Abstract: This invention provides raw material compounds for use in CVD which contain an organic iridium compound as a main ingredient, the organic iridium compound consisting of tris(5-methyl-2,4-hexanedionato)iridium. According to the CVD which uses the above raw material compounds, a pure iridium thin film and an iridium oxide thin film of excellent morphology can be produced effectively.Type: GrantFiled: April 15, 2003Date of Patent: December 16, 2003Assignee: Tanaka Kikinzoku Kogyo K.K.Inventors: Masayuki Saito, Takeyuki Sagae
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Patent number: 6654993Abstract: A process for fabricating a ceramic electroactive transducer of a predetermined shape is disclosed. The process comprises the steps of providing a suitably shaped core having an outer surface, attaching a first conductor to the outer surface of the core, coating an inner conductive electrode on the the outer surface of the core such that the inner conductive electrode is in electrical communication with the first conductor, coating a ceramic layer onto the inner electrode, thereafter sintering the ceramic layer, coating an outer electrode onto the sintered ceramic layer to produce an outer electrode that is not in electrical communication with the first conductor, and then poling the sintered ceramic layer across the inner electrode and the outer electrode to produce the ceramic electrode.Type: GrantFiled: April 17, 2001Date of Patent: December 2, 2003Assignee: The Penn State Research FoundationInventors: Jindong Zhang, Robert E. Newnham
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Patent number: 6602556Abstract: Plasma spraying a substrate using particles having a ceramic coating on a combustible core, which may optionally be burned out before spraying, gives a potential for a thicker more conformable protective coat.Type: GrantFiled: August 1, 2002Date of Patent: August 5, 2003Assignee: Saint-Gobain Abrasives Technology CompanyInventor: Sung H. Yu
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Patent number: 6596834Abstract: Silicone resins having the general formula (R1SiO3/2)x(HSiO3/2)y where R1 is an alkyl group having 8 to 24 carbon atoms; x has a value of 0.05 to 0.7; y has a value of 0.3 to 0.95 and x+y =1. The resins are used to form porous ceramic materials and porous thin films on semiconductor devices.Type: GrantFiled: September 12, 2001Date of Patent: July 22, 2003Assignee: Dow Corning CorporationInventor: Bianxiao Zhong
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Patent number: 6593166Abstract: A method of constructing nanotube matrix material in a controlled manner wherein, a nanotube fragment having at least two potential energy-binding surfaces including two distinct levels of binding potential energy of H-bonding and a second lower binding potential energy of covalent bonding, are used for binding corresponding nanotube fragments. The method comprises the steps of: (a) bringing a solution of nanotube fragments together; (b) heating the solution to a temperature to disrupt the H-bonding but insufficient to denature the covalent bonding; (c) agitating the solution and slowly reducing the temperature (annealing) to a temperature where the H-bondings are stable, producing an optimal configuration; (d) adding a reagent to the solution to cause ring closure; and (e) introducing a catalytic element for purification and dehydrogenation of the nanotube matrix material formed.Type: GrantFiled: November 20, 2000Date of Patent: July 15, 2003Assignee: Silverbrook Research Pty LtdInventor: Kia Silverbrook
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Patent number: 6582773Abstract: A method and device of treating an irregularly shaped article to prepare the article for painting is provided. The device includes a burner which can produce an adjustable flame tongue which can fit into crevices, openings and other irregular topographical features of an item to be painted or otherwise coated. The burner device further provides means to apply a grafting chemical on a freshly oxidized surface. Further, the invention provides means to colorize treated objects so that they may be recognized as having been treated. In another embodiment, the grafting chemicals may be enhanced with electrolytic solutions such that electrostatic methods of painting may be subsequently employed on the item. In an alternate embodiment, the burner is adapted to spray a powder inside of a generally enclosed flame, and is used in conjunction with chop guns to manufacture glass or carbon fiber preforms.Type: GrantFiled: April 17, 2001Date of Patent: June 24, 2003Assignee: FTS, L.L.C.Inventor: Russell Brynolf
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Patent number: 6506323Abstract: A method for making micrometer-sized carbon tubes is disclosed. A natural or synthetic fiber is first coated with a thermally stable coating material to form a coating layer over the fiber. Such coated fiber is then employed for making a hollow carbon tube, by removing the fiber and carbonizing the coating layer together with the residue of the fiber (if there is any). The removing treatment and carbonization treatment can be proceeded sequentially or concurrently.Type: GrantFiled: September 22, 1999Date of Patent: January 14, 2003Inventor: Chien-Chung Han
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Patent number: 6461673Abstract: A sole for a boot and the boot incorporating the sole. The sole provides the wearer of the boot with a level of protection from explosive devices triggered by the wearer stepping on or near the explosive device. The sole includes at least one layer of corrugated blast-resistant material. The corrugations provide channels that effectively channel blast gases generated by the explosion of the explosive device sidewardly and so away from the foot of the wearer of the boot. The sole further includes layers of blast-resistant material and a cocoon of material is also provided throughout the upper of the boot to provide a level of protection to the remainder of the wearer's foot.Type: GrantFiled: August 7, 2000Date of Patent: October 8, 2002Assignee: BFR Holdings LimitedInventor: Guy Andrew Vaz
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Patent number: 6432538Abstract: A carbon fiber reinforced carbon composite, obtained by a method comprising impregnating a pitch or a resin into a molded member formed of carbon fibers for densification thereof; forming an impregnated pyrolytic carbon layer by CVI after densification; and forming a coated pyrolytic carbon layer on the impregnated pyrolytic carbon layer by CVD; a method of making the carbon fiber reinforced carbon composite; and a pulling single crystal member made from the carbon fiber reinforced carbon composite.Type: GrantFiled: January 28, 2000Date of Patent: August 13, 2002Assignee: Toyo Tanso Co., Ltd.Inventors: Toshiharu Hiraoka, Naoto Ohta, Akira Asari, Toshiaki Sogabe
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Publication number: 20020041963Abstract: Spherical, non-crystalline silica particles made by burning a non-halogenated siloxane starting material are substantially halogen-free, and have a content of metallic impurities other than silicon of not more than 1 ppm, a particle size of 10 nm to 10 &mgr;m and a specific surface area of 3-300 m2/g. Production of the particles is carried out by oxidative combustion of the non-halogenated siloxane in a flame at a high adiabatic flame temperature to effect the formation of a large number of core particles and promote their coalescence and growth.Type: ApplicationFiled: August 15, 2001Publication date: April 11, 2002Inventors: Yoshiharu Konya, Koichiro Watanabe, Susumu Ueno
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Publication number: 20020015848Abstract: Hollow carbon particles having an average particle size of 0.05 to 5.0 &mgr;m, a shell thickness of 5 to 50 nm and a particle size distribution of not more than 30%. The hollow carbon particles have a desired shape, and are excellent in particle size distribution and mechanical strength.Type: ApplicationFiled: June 11, 2001Publication date: February 7, 2002Inventor: Naoya Kobayashi
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Patent number: 6312571Abstract: An activated cathode comprising an electrically conductive substrate, an interlayer comprising a nickel oxide formed on the surface of the electrically conductive substrate, and a catalyst layer containing at least one lanthanum component selected from oxides and hydroxides of lanthanum metals and at least one platinum component selected from platinum metals and silver and oxides and hydroxides thereof formed on the interlayer. A process for the preparation of an activated cathode is also disclosed which comprises forming an interlayer comprising a nickel oxide on the surface of an electrically conductive substrate, and then forming a catalyst layer containing at least one lanthanum component selected from oxides and hydroxides of lanthanum metals and at least one platinum. component selected from platinum metals and silver and oxides and hydroxides thereof on the surface of the interlayer.Type: GrantFiled: February 24, 2000Date of Patent: November 6, 2001Assignee: Permelec Electrode Ltd.Inventors: Miwako Nara, Masashi Tanaka, Yoshinori Nishiki, Shuji Nakamatsu
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Publication number: 20010006865Abstract: The invention provides gel-coated materials that provide enhanced flame-, physical- and chemical-resistance to the foamed materials. The gel coatings can be created with a sol-gel process. Such treated materials can be used, for example, in the manufacture of articles of clothing that are to be used in environments in which fire and exposure to acids, bases or other chemicals which tend to corrode foamed materials is a potential hazard.Type: ApplicationFiled: January 26, 2001Publication date: July 5, 2001Applicant: Frisby Technologies, Inc.Inventor: Mark E. Holman
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Patent number: 6221426Abstract: An electron-emitting device comprises an electroconductive film including an electron-emitting region and a pair of electrodes for applying a voltage to the electroconductive film. The electron-emitting region is formed by applying a film of organic substance to the electroconductive film, carbonizing the organic substance by electrically energizing the electroconductive film, and forming a fissure or fissures in the electroconductive film prior to the carbonization. The electron-emitting device constitutes an electron source having a plurality of electron-emitting devices, and further an image-forming device comprising an electron source and an image-forming member arranged in an envelope.Type: GrantFiled: December 26, 1996Date of Patent: April 24, 2001Assignee: Canon Kabushiki KaishaInventor: Masato Yamanobe
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Patent number: 6207230Abstract: A method of preparing a high-heat-resistance resin composite ceramic that can be used at a high temperature of over 400° C., the high-heat-resistance composite ceramic exhibiting remarkably high heat resistance, excellent in processability, durability against chemicals and durability against plasma, further, exhibiting “outgassing” to a lesser degree at a high temperature under high vacuum. The method comprises the steps of impregnating an inorganic continuously porous sintered body (I) having an open porosity of at least 0.5% with an organometallic compound (M), heat-treating the impregnated inorganic continuously porous sintered body (I) to decompose the organometallic compound (M) and thereby forming a metal compound which is a carbide, a nitride, an oxide or a composite oxide on an inner wall plane of each of open pores, and filling a heat-resistant silicone resin (R) in the open pores by impregnation under vacuum and thermally curing the heat-resistant silicone resin (R).Type: GrantFiled: June 2, 2000Date of Patent: March 27, 2001Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Kazuyuki Ohya, Norio Sayama
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Patent number: 6197415Abstract: The invention provides gel-coated materials that provide enhanced flame-, physical- and chemical-resistance to the foamed materials. The gel coatings can be created with a sol-gel process. Such treated materials can be used, for example, in the manufacture of articles of clothing that are to be used in environments in which fire and exposure to acids, bases or other chemicals which tend to corrode foamed materials is a potential hazard.Type: GrantFiled: January 22, 1999Date of Patent: March 6, 2001Assignee: Frisby Technologies, Inc.Inventor: Mark E. Holman
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Patent number: 6159417Abstract: A process for producing a ceramic network material including the steps of: introducing a ceramic powder into a mold to form a molded material; firing the molded material to form a ceramic, open pore network; infusing the ceramic network with a silane solution; infusing a monomer to at least a portion of the ceramic network; and forming an interpenetrating network. The ceramic network materials may be used as restorative materials and in various devices such as posts, implant abutments, orthodontic brackets and blocks.Type: GrantFiled: November 30, 1998Date of Patent: December 12, 2000Assignee: Trustees of Boston UniversityInventor: Russell A. Giordano
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Patent number: 6153266Abstract: The present invention provides a method for producing a calcium phosphate coating film on the surface of a substrate, even a substrate which has poor heat resistance. The method comprises the steps of soaking a substrate in a first solution containing phosphate ions, inter alia, aqueous solutions of a basic phosphate salt such as Na.sub.3 PO.sub.4 or Na.sub.2 HPO.sub.4 ; removing the substrate and drying it; and soaking the substrate in a second solution (aqueous solution) containing calcium ions, to thereby obtain a coating film comprising hydroxyapatite or a mixture containing hydroxyapatite and a hydroxyapatite precursor. The substrate removed from the second solution may be soaked in a third solution (aqueous solution) containing an apatite component at a substantially saturated or supersaturated concentration, to thereby form a hydroxyapatite coating film. There may be used substrates formed of metals, ceramics, organic polymer materials, etc.Type: GrantFiled: December 7, 1998Date of Patent: November 28, 2000Assignees: Japan as represented by Director General Agency of Industrial Science and Technology, NGK Spark Plug Co., Ltd.Inventors: Yoshiyuki Yokogawa, Tetsuya Kameyama, Yukari Kawamoto, Kaori Nishizawa, Fukue Nagata, Kohji Okada, Hiroshi Sumi
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Patent number: 6146686Abstract: The invention provides a nanotechnology process for implant surface treatment for producing an implant article. The nanotechnology process comprises subjecting a non-porous material to a mechanical or chemical surface treatment until a surface roughness with an average peak distance (Ra value) between 10 and 1,000 nm is obtained. The roughened surface can subsequently be subjected to precipitation of calcium phosphate from a solution containing calcium and phosphate ions.Type: GrantFiled: April 23, 1999Date of Patent: November 14, 2000Assignee: IsoTis B.V.Inventor: Eugenia Ribeiro de Sousa Fildago Leitao
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Patent number: 6143354Abstract: A method of modifying the surface characteristics of a substrate, particularly a polymeric material. The method involves grafting ethylenically unsaturated monomers and attaching biomolecules, such as heparin, to the surface of the substrate, such as a polymeric material, in one step using an oxidizing metal, such as ceric ions.Type: GrantFiled: February 8, 1999Date of Patent: November 7, 2000Assignee: Medtronic Inc.Inventors: Edouard Koulik, Michel Verhoeven, Patrick Cahalan, Linda Cahalan