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| Number | Title | Issue Date |
| 8187990 | Hollow piece for producing a sintered refractory product exhibiting improved bubbling behaviour A green part, a region of a refractory furnace or a hollow piece for producing a sintered refractory has the following mean mineral chemical composition in weight percent based of mineral oxides: 40%≦Al2O3≦94%, 0%≦ZrO2≦41%, 2... | 05/29/2012 |
| 8138109 | Zirconia-mullite refractory raw material and a plate brick Provided is a zirconia-mullite refractory raw material which is less likely to undergo alternation and microstructural degradation under high-temperature conditions, and low in thermal expansion rate, so as to have thermal shock resistance and corrosion resistance. ... | 03/20/2012 |
| 8133831 | Slip for the preparation of dental ceramics by a hot-melt inkjet printing process Slip for use in a hot-melt inkjet printing process which contains (A) ceramic particles, (B) wax and (C) at least one radically polymerizable monomer, and use of the slip to prepare dental restorations. Furthermore, a process for the preparation of a green compact i... | 03/13/2012 |
| 8093168 | ZrO-AlOcomposite ceramic material and production method therefor A ZrO2—Al2O3 composite ceramic material having excellent wear resistance, hardness, strength and toughness is provided. This ceramic material comprises a ZrO2 phase composed of 90 vol % or more of tetragonal ZrO2 | 01/10/2012 |
| 8012897 | Alumina ceramic products The invention provides a sintered, yttria stabilized zirconium-toughened alumina ceramic product comprising about 80-94 w/w % Al2O3, about 5-19 w/w % ZrO2 and about 0.18-0.72 w/w % Y2O. ... | 09/06/2011 |
| 7943541 | Sintered refractory product exhibiting enhanced thermal shock resistance The invention concerns a sintered refractory product having the following average chemical composition, in weight percentages based on oxides: 20% | 05/17/2011 |
| 7928028 | ZrO-AlOcomposite ceramic material and production method therefor A ZrO2—Al2O3 composite ceramic material having excellent wear resistance, hardness, strength and toughness is provided. This ceramic material comprises a ZrO2 phase composed of 90 vol % or more of tetragonal ZrO2 | 04/19/2011 |
| 7871950 | Colored zirconia-based sintered body and manufacturing method thereof and decorative member This invention provides a colored zirconia-based sintered body, mainly composed of zirconia containing a stabilizer, which contains alumina and nickel spinel, and has a novel color tone, and a method for manufacturing such a zirconia-based sintered body. The colored... | 01/18/2011 |
| 7842633 | High-resistance high-zirconia cast refractory material A high-zirconia cast refractory material which contains 85-95 wt % of ZrO2, 4-12 wt % of SiO2, 0.1 to less than 0.8 wt % of Al2O3, less than 0.04 wt % of Na2O, 0.01-0.15 wt % of K2O, 0.1-1.5 wt % of B... | 11/30/2010 |
| 7820577 | Biomedical member and method for producing the same A biomedical member having high strength, high toughness and high hardness and an artificial joint that uses the same are provided. In addition, a biomedical member that exhibits high wear resistance even in in vivo environment and an artificial joint are provided. | 10/26/2010 |
| 7799717 | Spark plug having a ceramic insulator with improved high temperature electrical properties A spark plug which includes a center electrode metal shell and an insulator disposed therebetween utilizes for the insulator or ceramic with improved high temperature electrical properties which includes alumina in an amount between about 90 and about 99% by weight,... | 09/21/2010 |
| 7687422 | High resistivity refractory with a high zirconia content A novel fused and cast refractory product with a high zirconia content having improved electrical resistivity includes, as a percentage by weight relative to the oxides and for a total of more than 98.5%: | 03/30/2010 |
| 7655587 | High resistivity refractory with a high zirconia content The invention provides a novel fused and cast refractory product with a high zirconia content having improved electrical resistivity. Said refractory product comprises, as a percentage by weight relative to the oxides and for a total of more than 98.5%: | 02/02/2010 |
| 7642211 | Reduced sweating AZS product An AZS type fused cast refractory product presenting the following chemical composition, as a percentage by weight: ZrO2: 15.5% to 22%; SiO2: 10.5% to 15%; Na2O+K2O+Li2O: 1.0% to 2.5%; impurities: | 01/05/2010 |
| 7598195 | Fusion-cast refractory with high electrical resistivity A fusion-cast refractory is provided. The refractory comprises 0.8% to 2.5% Al2O3, 4.0% to 10.0% SiO2, 86% to 95% ZrO2, 0.1% to 1.2% B2O3, up to 0.04% Na2O, up to 0.4% CaO, up to 0.1% Fe | 10/06/2009 |
| 7566674 | Dental ceramics and method for the manufacture thereof In dental ceramics containing zirconium dioxide and silicon-dioxide with a Zr/Si ratio of between 0.5 and 1.0, 1 to 12 wt % of aluminum oxide and up to 2 wt % of an alkali- or earth alkali metal oxide, those materials are selectively mixed with yttrium-stabilized zi... | 07/28/2009 |
| 7553789 | Powder for black zirconia sintered body, production method thereof, and sintered body thereof A zirconia-containing powder including 2 to 6 weight % of a pigment which has a spinel structure represented by the chemical formula (Co1-xZnx)(Fe1-yAly)2O4(0≦x≦0.5, 0 | 06/30/2009 |
| 7414002 | Aluminum oxide-titanium nitride sintered body, manufacturing method thereof, and magnetic head substrate, ultrasonic motor and dynamic pressure bearing using the same The present invention provides an aluminum oxide-titanium nitride sintered body having good resistance to electrostatic damage and small variation in volume resistivity. The aluminum oxide-titanium nitride sintered body is mainly composed of 65 to 85% by weight of a... | 08/19/2008 |
| 7405173 | Alumina-titanium oxide-zirconia fused grain An alumina-titanium oxide-zirconia fused grain presenting, for a total of 100%, the following chemical composition: Al2O3: more than 10% and less than 50%; TiO2: more than 10% and l... | 07/29/2008 |
| 7399722 | Alumina/zirconia ceramics and method of producing the same Composite ceramics having a high strength, a high toughness and an excellent abrasion resistance, and a method of producing the same. The composite ceramics comprises 10 to 30 mass % of a zirconia crystal phase including Ce-stabilized zirconia crystal particles whic... | 07/15/2008 |
| 7396789 | Gasifier reactor internal coating A gasifier internal refractory coating has at least one region of a sintered material containing at least 45% by weight of chromium oxide (Cr2O3) and at least 1% by weight of zirconium oxide, at least 20% by weight of the z... | 07/08/2008 |
| 7396792 | Transparent polycrystalline aluminium oxide The present invention relates to highly dense translucent and transparent aluminium oxide components for applications, e.g. in the lighting industry, where a fine crystal size has to be obtained and stabilized for use at temperatures of 800° C. or more. Disclosed a... | 07/08/2008 |
| 7358485 | Zirconia toughened alumina composition and use in ion and electron optical systems An ion optical system including an ionizer for ionizing one or more compounds, the ionizer including a plurality of components, a mass separator for separating ions of the one or more compounds, the mass separator including a plurality of components, and a detector ... | 04/15/2008 |
| 7354878 | Sag control of isopipes used in making sheet glass by the fusion process Isopipes for use in making sheet glass by a fusion process are provided which exhibit reduced sag. The isopipes are composed of a zircon refractory which has a mean creep rate (MCR) at 1180° C. and 250 psi and a 95 percent confidence band (CB) for said mean creep r... | 04/08/2008 |
| 7354883 | Catalyst and method for the production of 1-olefins from 2-hydroxylkanes The present invention relates to a process for preparing 1-olefins from 2-hydroxyalkanes by catalytic elimination of water under nonisomerizing conditions and to a catalyst which is particularly well-suited for this process and formally comprises yttrium oxide (Y | 04/08/2008 |
| 7341697 | Reaction cell and operation method thereof A reaction cell is provided with a vessel-like cell main body and a circular piezoelectric/electrostrictive oscillator fixed to an outside of a bottom surface of the cell main body. The cell main body includes a circular bottom plate portion and a circumferential wa... | 03/11/2008 |
| 7335617 | Refractory product for a checker work element of a glass furnace regenerator The invention relates to a melted and cast refractory product which is intended, for example, for a checker work element of a glass furnace regenerator, having the following average chemical weight composition, expressed in weight percent based on oxide content: 0.4... | 02/26/2008 |
| 7320716 | Method for toughening surface of sintered material cutting tool and sintered material cutting tool having long life A ceramics sintered material cutting tool, characterizing in that it has a dislocation structure which formed on the surface thereof in a straight line from and distributed uniformity in a dislocation density of 1×104 to 9×1013 cm−2 | 01/22/2008 |
| 7316806 | Modifying catalyst for partial oxidation and method for modification A reforming catalyst for partial oxidation to reform hydrocarbon compound including a sulfur-containing compound includes platinum and rhodium. Even in reforming a hydrocarbon compound including a sulfur-containing compound such as, for example, a town gas, the cata... | 01/08/2008 |
| 7291574 | Zirconia sintered body and a method for producing the same A zirconia sintered body having high strength and high toughness is provided, and a method for producing the same is also provided. The zirconia sintered body comprising tetragonal zirconia, wherein a full width at half maximum at (111) plane of the tetragonal zirco... | 11/06/2007 |
| 7288324 | Synthesis of tetragonal phase stabilized nano and submicron sized nanoparticles Novel, monodispersed, spherical ZrO2 particles in the size range of approximately 10 to approximately 600 nm exhibiting metastable tetragonal crystal structure at room temperature and novel methods of preparation. The ZrO2 particles are approxi... | 10/30/2007 |
| 7265076 | CO removal catalyst, method of producing CO removal catalyst, hydrogen purifying device and fuel cell system A CO removal catalyst of inducing CO shift reaction for allowing water and carbon monoxide to react to produce hydrogen and carbon dioxide, comprising a catalyst carrier having a cerium-zirconium composite oxide and a zirconium oxide and a predetermined noble metal ... | 09/04/2007 |
| 7259119 | Sag control of isopipes used in making sheet glass by the fusion process Isopipes for use in making sheet glass by a fusion process are provided which exhibit reduced sag. The isopipes are composed of a zircon refractory which has a mean creep rate (MCR) at 1180° C. and 250 psi and a 95 percent confidence band (CB) for said mean creep r... | 08/21/2007 |
| 7258158 | Increasing stability of silica-bearing material Method and apparatus for prolonging the stability (working life) of a ceramic slurry and other aqueous mixture or dispersion containing a liquid silica-bearing or other component as well as the raw liquid silica-bearing component in ambient air over time by providin... | 08/21/2007 |
| 7258825 | Method for manufacturing a ceramic foam A filtering body is obtained for particulate of diesel engines, consisting of a ceramic foam that is produced, starting from a ceramic-material powder-based suspension (slurry), by preparing a perform of polymeric foam material and impregnating the said perform with... | 08/21/2007 |
| 7255838 | Apparatus with nano-sized platinum black and oxygen-rich ceramic powder for filtering the incoming air into an internal combustion engine An air filter for an internal combustion engine having a rigid type ceramic filter element made by foaming oxygen-rich ceramic powder for creating a plurality of pass-through holes. In this way, the incoming air obtains a thorough contact with the oxygen-rich powder... | 08/14/2007 |
| 7255898 | Zirconia toughened ceramic components and coatings in semiconductor processing equipment and method of manufacture thereof A corrosion resistant component of semiconductor processing equipment such as a plasma chamber comprises zirconia toughened ceramic material as an outermost surface of the component. The component can be made entirely of the ceramic material or the ceramic material ... | 08/14/2007 |
| 7247588 | Zirconia toughened alumina ESD safe ceramic composition, component, and methods for making same ESD safe ceramic component is provided which includes a sintered composition which is formed of a base material and a resistivity modifier. The base material includes a primary component and a secondary component, the primary component including Al2O... | 07/24/2007 |
| 7247597 | Composite oxide, process for producing the same, and exhaust gas reducing co-catalyst A composite oxide includes CeO2, ZrO2 and a metallic oxide being free from reacting with CeO2 and ZrO2 at 700° C. or more, preferably at 900° C. or more and further preferably at 1,000° C. or more. The composite oxide h... | 07/24/2007 |
| 7238635 | Creep resistant zircon refractory material used in a glass manufacturing system A glass manufacturing system is described herein that has a forming device (e.g., isopipe) which is made from a zircon refractory material that has an improved creep resistance property. The zircon refractory material has a composition with at least the following el... | 07/03/2007 |
