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| Number | Title | Issue Date |
| 7993571 | Silicon carbide ceramic components having oxide layer A ceramic component is provided, including a ceramic body containing silicon carbide, and an oxide layer provided on the ceramic body, the oxide layer being formed by oxidizing the ceramic body in the presence of alumina having a submicron particle size. ... | 08/09/2011 |
| 7931853 | System, method, and apparatus for conversion bonding of precursor subcomponents into a unitary monolith A process for converting precursor objects into a unitary ceramic object produces, for example, a ceramic, optical scan mirror that is formed from at least two pieces. An optical section has at least one optical surface and at least one attachment surface, and a sup... | 04/26/2011 |
| 7485246 | Fabrication method of sintered duplex nuclear fuel pellet A method for fabricating a sintered duplex nuclear fuel pellet includes the steps of: preparing a first powder composed of a material selected from the group consisting of UO2 and UO2—Er2O3, and a second powder composed ... | 02/03/2009 |
| 7238308 | Process for the infiltration of porous carbon composites A process form producing ceramic composites comprising metal carbides, which comprises the steps production of a porous carbon-containing intermediate body, infiltration of the intermediate body with the melt of a carbon-forming metal, reaction of at least part of t... | 07/03/2007 |
| 7138190 | Composite containing reinforcing fibers comprising carbon Composite which contains reinforcing fibers comprising carbon and whose matrix comprises silicon carbide, silicon and copper, with the mass fraction of copper in the composite being up to 55%, processes for producing it, in particular by liquid infiltration of C/C i... | 11/21/2006 |
| 7112549 | Low thermal expansion ceramic and member for exposure system A low-thermal-expansion, rigid and wear-resistant ceramic is provided. The low-thermal-expansion ceramic of the invention includes 60 vol % to 99.9 vol % of at least one selected from the group consisting of cordierite, spodumene and eucryptite and 0.1 vol % to 40 v... | 09/26/2006 |
| 7011888 | Process for protecting fiber-reinforced carbon-containing composites against oxidation Process for protecting fiber-reinforced, carbon-containing composites whose matrix comprises, at least in the outer layer, silicon carbide (SiC) and also silicon (Si) and/or silicon alloys against oxidation, which comprises the steps a) impregnation of the composite... | 03/14/2006 |
| 6933256 | Dielectric ceramic composition, electronic device, and method for producing same A dielectric ceramic composition comprising at least a main component containing a dielectric oxide of a composition expressed by {(Sr1−xCax)O}m.(Ti1−yZry)O2 and a first subcomponent containing at... | 08/23/2005 |
| 6924038 | Stop-off for diffusion coating A mask suitable for protecting a portion of a substrate surface against diffusion coating of the substrate with a metal, which mask comprises a ceramic material comprising silica and an inert refractory diluent and a metal or metal alloy, wherein the metal or metal ... | 08/02/2005 |
| 6849213 | Method for producing silicon nitride filter A method for producing a silicon nitride filter including heat-treating in nitrogen a green body containing from 40 to 90% of metal silicon particles having an average particle diameter of from 1 to 200 μm and from 10 to 60% of a pore-forming agent, where the total... | 02/01/2005 |
| 6793873 | Melted-infiltrated fiber-reinforced composite ceramic A melt-infiltrated, fiber-reinforced composite ceramic containing high-temperature-resistant fibers, in particular fibers based on Si/C/B/N, which are reaction-bonded to a matrix based on Si and also a process for producing such a composite ceramic are described. Th... | 09/21/2004 |
| 6537940 | Alkali-metal-ଲ- and ଲ"-alumina and gallate polycrystalline ceramics and fabrication by a vapor phase method A ceramic composite containing alkali-metal-ଲ- or ଲ"-alumina and an oxygen-ion conductor is fabricated by converting -alumina to alkali-metal-ଲ- or ଲ"-alumina. A ceramic composite with continuous phases of -alumina an... | 03/25/2003 |
| 6527937 | Method of making a capacitor anode of a pellet of niobium oxide Methods to at least partially reduce a niobium oxide are described wherein the process includes heat treating the niobium oxide in the presence of a getter material and in an atmosphere which permits the transfer of oxygen atoms from the niobium oxide to ... | 03/04/2003 |
| 6461562 | Methods of making sintered metal oxide articles Methods of making metal oxide articles, preferably iron oxide articles, and articles thereby produced. The method comprises the steps of slightly pressing powder to a compact, the powder consisting essentially of a first oxide of the metal; and subjecting... | 10/08/2002 |
| 6451244 | Ceramics with excellent piezoelectric property and their manufacturing method The present invention is intended to provide piezoelectric ceramic materials having far better strain characteristics than that of conventional piezoelectric ceramics, as well as a novel method for producing such piezoelectric ceramics, and the present in... | 09/17/2002 |
| 6214523 | Pattern formation by removal of paste material A method for serializing ceramic substrates in which a laser is used to remove unfired paste material from an unfired ceramic substrate. The paste material is removed by exposing the unwanted paste material to laser radiation in a programmed sequence of x... | 04/10/2001 |
| 6197247 | Molybdenum disilicide composites Molybdenum disilicide/.beta.'-Si.sub.6-z Al.sub.z O.sub.z N.sub.8-z, wherein z=a number from greater than 0 to about 5, composites are made by use of in situ reactions among .alpha.-silicon nitride, molybdenum disilicide, and aluminum. Molybdenum disilici... | 03/06/2001 |
| 6117807 | Alkali-metal-ଲ- and ଲ"-alumina and gallate polycrystalline ceramics and fabrication by a vapor phase method A ceramic composite containing alkali-metal-ଲ- or ଲ"-alumina and an oxygen-ion conductor is fabricated by converting -alumina to alkali-metal-ଲ- or ଲ"-alumina. A ceramic composite with continuous phases of -alumina an... | 09/12/2000 |
| 6093366 | Method of manufacturing ceramic sintered bodies The present invention provides a ceramic sintered body excellent in oxidation resistance under high temperatures and markedly superior to the conventional ceramic sintered body in the mechanical strength over a wide temperature range of between room tempe... | 07/25/2000 |
| 6093667 | Ceramics with excellent electrostrictive property The present invention provides novel ceramic materials with excellent electrostrictive property, and the present invention relates to electrostrictive ceramics consisting of solid solution ceramics which can be obtained by combining about 30 molar % of pr... | 07/25/2000 |
| 5972274 | Making of ceramic tube A conductive wire is electrically heated in a gas atmosphere, wherein a gas reacts with a constituent material of the conductive wire, under gravity-free or micro gravity state. A ceramic is formed on a surface of the wire sa an outer core through a react... | 10/26/1999 |
| 5817274 | Method of manufacturing aluminum nitride Disclosed is a method of manufacturing aluminum nitride, which comprises the steps of preparing a mixed gas consisting essentially of an ammonia gas and at least 0.5% by volume of a hydrocarbon gas, calcining γ-Al2 O3 or a precursor... | 10/06/1998 |
| 5762864 | Lightweight artificial aggregate manufacturing method using paper and dye sludge A lightweight artificial aggregate manufacturing method includes the steps of: mixing aggregate sludge, whose moisture content exceeds 30%, with stone fragments, generated when pulverizing stone, to decrease the moisture content, mixing this mixture and s... | 06/09/1998 |
| 5700408 | Method of producing a ceramic component by sintering In order to achieve, proceeding from the known methods of producing a ceramic component by sintering, in which an oxygenous ceramic powder is introduced into a sintering chamber, heated in there, and dense sintered under application of a halogen-containin... | 12/23/1997 |
| 5344634 | Method of nitriding silicon A process for nitriding materials containing silicon to form a silicon nitride material predominantly in the alpha phase is disclosed which includes nitriding the silicon-containing material by (a) heating the silicon-containing material in an atmosphere ... | 09/06/1994 |
| 5334565 | Method of manufacturing silicon nitride whiskers Disclosed is a method for producing long silicon nitride whiskers. The production method encompasses reacting diatomaceous earth on a carbon boat in a gas flow composed of a reducing agent and a nitriding agent at a temperature of 1,200°-1,700° C.... | 08/02/1994 |
| 5116559 | Method of forming yttria-gadolinia ceramic scintillator using hydroxide coprecipitation step A simplified method of forming polycrystalline translucent-to-transparent yttria-gadolinia composition scintillators comprises forming an aqueous suspension of hydroxide coprecipitates of the yttria-gadolinia composition, and converting the hydroxides to ... | 05/26/1992 |
| 5116560 | Method of forming rare earth oxide ceramic scintillator with ammonium dispersion of oxalate precipitates A method of forming polycrystalline rare earth oxide ceramic scintillators formed by dissolving a mixture of oxides of the scintillator in an aqueous hydrochloric or nitric acid solution to form a rare earth solution, precipitating oxalates from the rare ... | 05/26/1992 |
| 5108674 | Metal sulfide body method A method of employing soot casting technology in the production of sintered, metal sulfide, monolithic bodies, such as zinc sulfide bodies, is disclosed. The method comprises forming a colloidal dispersion from submicron particles of the metal sulfide, ge... | 04/28/1992 |
| 5100598 | Method of forming yttria-gadolinia ceramic scintillator from ammonium dispersed oxalate precipitates A simplified method of forming polycrystalline translucent-to-transparent yttria-gadolinia scintillators comprises coprecipitating oxalates of the yttria-gadolinia composition, drying the oxalates at about 75° C. to 125° C., forming an aqueous suspensio... | 03/31/1992 |
| 4994416 | Ceramic composites reinforced with modified silicon carbide whiskers and method for modifying the whiskers Silicon carbide whisker-reinforced ceramic composites are fabricated in a highly reproducible manner by beneficating the surfaces of the silicon carbide whiskers prior to their usage in the ceramic composites. The silicon carbide whiskers which contain co... | 02/19/1991 |
| 4855259 | Process of making ceramic moldings containing cordierite Ceramic moldings containing finely crystalline cordierite are described, which are obtainable by the intensive grinding of precrystallized cordierite powder, mixing the powder with second additive phases of higher modulus of elasticity, shaping the mixtur... | 08/08/1989 |
| 4747863 | Method of manufacturing glass bodies A method of manufacturing glass bodies, in which the starting material for the glass body, being monodispersed SiO2 particles (quartz-glass powder), is used to form an open-pore green body which is subjected to a purification process in which t... | 05/31/1988 |
| 4557884 | Refractory A means for producing nitride bonded refractory shapes, in situ, by mixing an aluminum metal powder, relatively pure silica and a refractory aggregate. The mixes are pressed into shapes and burned at elevated temperatures in a nitriding atmosphere to form... | 12/10/1985 |
| 4247333 | Alumina shell molds used for investment casting in directional solidification of eutectic superalloys An alumina investment casting mold has a microstructure characterized by the porous nature of the interconnecting alumina grains which is indicative of alumina-silica molds fired in a reducing atmosphere to remove the silica.... | 01/27/1981 |
| 4229391 | Process for the manufacturing of colored clay products The present invention relates to a process for the production of colored, fired, shaped clay products which comprises firing shaped, dried clay objects in a kiln, effecting carbon deposition on and into the resulting fired clay objects by heat treating th... | 10/21/1980 |
| 4069060 | Alumina-silicon carbide refractories and their method of manufacture Alumina-silicon carbide refractory characterized by comprising predominantly an inter growth texture. The alumina-silicon carbide is manufactured by adding fine aluminum powder to a body of silica-alumina type refractory compound, mixing, molding and dryi... | 01/17/1978 |
| 3974249 | Method for manufacturing a transparent ceramic body The present invention provides a high heat resistant, light transmitting, thermal shock resistant and high strength sintered ceramic body containing at least about 98% by weight magnesia-alumina spinel and a method of manufacturing the same which comprise... | 08/10/1976 |
| 3950478 | Process for producing alumina fiber Alumina fibre is prepared by spinning a solution containing an aluminium compound and an organic polymer, removing solvent and contacting the fibre with ammonia or an amine before conversion of the fibre to alumina.... | 04/13/1976 |
| 3932594 | Process for the preparation of fine grain metal carbide powders Fine grain metal carbide powders are conveniently prepared from the corresponding metal oxide by heating in an atmosphere of methane in hydrogen. Sintered articles having a density approaching the theoretical density of the metal carbide itself can be fab... | 01/13/1976 |
