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| Number | Title | Issue Date |
| 7531476 | Refractory material for cement industry kilns and use thereof The present invention provides refractory materials for the kilns in the cement industry. The refractory material comprises andalusite, silicon carbide, and clay, or kaolinite, silicon carbide, and clay. The refractory materials can be configured as bricks such as f... | 05/12/2009 |
| 7407523 | Cutting tool insert and method for producing the same An improved cutting tool insert and a method for the preparation of such cutting tool insert, having a sintered alumina and silicon carbide whisker composite material body, comprising the steps of milling and mixing the powdered starting materials of said composite ... | 08/05/2008 |
| 7371704 | Sintered bodies of yttrium-aluminum garnet, a method of producing the same and sintering aid therefor An object of the present invention is to lower the sintering temperature required for a sintered body of yttrium-aluminum garnet, to improve the corrosion resistance of the sintered body and to prevent the reduction of the transmittance thereof. A sintered body of y... | 05/13/2008 |
| 7345849 | Magnetic head slider material, magnetic head slider, and method of manufacturing magnetic head slider material The magnetic head slider material of the present invention is constituted by a sintered body containing 100 parts by weight of alumina, 20 to 150 parts by weight of titanium carbide and silicon carbide in total, and 0.2 to 9 parts by weight of carbon. ... | 03/18/2008 |
| 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 |
| 7267882 | Ceramic/metal material and method for making same An improved ceramic/metal composite material is disclosed which is fully reacted with aluminum. The composite is made from a ceramic preform, such as silicon carbide, having a binding agent, such as silica, that is contacted with a metal mixture or alloy, such as al... | 09/11/2007 |
| 7244686 | Bearings produced from silicon nitride substances containing sintering additives and SiO The present invention is directed to bearings produced from a silicon nitride material. The silicon nitride material consists of a sintering aid selected from the group consisting of Al2O3 and Y2O3, silicon dioxide, and op... | 07/17/2007 |
| 7244685 | Silicon carbide porous body, process for producing the same and honeycomb structure A silicon carbide porous body of the present invention, comprising silicon carbide particles and metallic silicon bonded together in such a manner that pores are retained between the silicon carbide particles and/or between the silicon carbide particle and metallic ... | 07/17/2007 |
| 7217674 | Alumina-boron carbide ceramics and methods of making and using the same A ceramic body, as well as a method of making the ceramic body, wherein in one aspect a hot-pressing method is used to produce the ceramic body. In another aspect, a sintering to full density method is used to produce the ceramic body. The hot-pressed ceramic body c... | 05/15/2007 |
| 7195722 | Compositions for ceramic igniters Ceramic igniter compositions are provided that contain components of conductive material and insulating material, where the insulating material component includes a relatively high concentration of metal oxide. Ceramic igniters of the invention are particularly effe... | 03/27/2007 |
| 7175798 | Cutting tool insert and method for producing the same An improved cutting tool insert and a method for the preparation of such cutting tool insert, having a sintered alumina and silicon carbide whisker composite material body, comprising the steps of milling and mixing the powdered starting materials of said composite ... | 02/13/2007 |
| 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 |
| 7094331 | Viscosity modification of heavy hydrocarbons using dihydric alcohols A low viscosity, high softening point heavy hydrocarbon material having a viscosity reducing amount of at least one dihydric alcohol dissolved therein, and a method for producing such heavy hydrocarbon material, are disclosed. ... | 08/22/2006 |
| 7067447 | Strain tolerant aggregate material A material (100) formed of a sintered aggregation of ceria particles (106), mullite particles (108) and an alumina matrix material (110). Differential thermal expansion of the ceria and mullite particles generates thermal stress sufficien... | 06/27/2006 |
| 7049256 | SiAlON containing ytterbium and method of making A SiAlON ceramic body made from a starting powder mixture that includes silicon nitride powder, and one or more powders that provide aluminum, oxygen, nitrogen and ytterbium to the SiAlON ceramic. The SiAlON ceramic body includes a two phase composite comprising alp... | 05/23/2006 |
| 6995103 | Toughness enhanced silicon-containing composite bodies, and methods for making same A silicon-containing composite body that would otherwise be brittle can be engineered to exhibit enhanced fracture toughness. Specifically, a silicon-ceramic composite body is produced, preferably by a reactive infiltration technique. The ceramic is selected such th... | 02/07/2006 |
| 6921506 | Method of manufacturing a thermal insulation body A pressed thermal insulation body is made by a method comprising the steps of: (1) providing a dry composition consisting of: (a) 10 to 100 percent by weight of volatilised silica containing a dispersion of 0.5 to ... | 07/26/2005 |
| 6905992 | Ceramic body reinforced with coarse silicon carbide whiskers and method for making the same A ceramic composite made by compacting a starting powder blend. The composite includes between about 50 volume percent and about 99 volume percent of a ceramic matrix; and between about 1 volume percent and about 50 volume percent as-processed silicon carbide whiske... | 06/14/2005 |
| 6887809 | Open-celled silicon carbide foam ceramic and method for production thereof The invention relates to the field of ceramics and open-celled silicon carbide foam ceramics, which can find application, for example, as high temperature- and thermal shock-resistant silicon carbide foam. The aim of the invention is to disclose an open-celled silic... | 05/03/2005 |
| 6863759 | Methods for making composite bonded structures Techniques to bond two or more smaller bodies or subunits to produce a unitary SiC composite structure extend the capabilities of reaction-bonded silicon carbide, for example, by making possible the fabrication of complex shapes. In a first aspect of the present inv... | 03/08/2005 |
| 6844281 | Reinforcement preform for metal matrix composites A preform for use in a metal matrix composite, particularly for a magnesium metal composite. In the preform the reinforcing material typically is silicon carbide, boron nitride, titanium nitride, carbon or graphite. The binder used in the preform is sintered magnesi... | 01/18/2005 |
| 6839639 | Giant composites Shaped composite structures which are strong, stiff and hard and, at the same time, having high toughness, comprise a matrix, for example a cement or ceramics based matrix and embedded therein a plurality of plate shaped or at lest 60 mm thick elongated reinforcemen... | 01/04/2005 |
| 6815038 | Honeycomb structure A honeycomb structure constituted by cell partition walls (ribs) which form combined cells being composed of a plurality of cells adjacent to each other, and a honeycomb outer wall surrounding and holding outermost... | 11/09/2004 |
| 6811868 | Ceramic body and ceramic catalyst body The object of the present invention is to provide a ceramic body that can support a required amount of a catalyst component, without lowering the characteristics such as strength, being manufactured without forming a coating layer and providing a high performance ce... | 11/02/2004 |
| 6777361 | Ceramic composite A ceramic composite material, for example, a ceramic molded body or a layer obtained by pyrolysis of a starting mixture, containing at least one polymer precursor material and at least one filler, which has an average particle size of less than 200 nm. Such a compos... | 08/17/2004 |
| 6762140 | Silicon carbide ceramic composition and method of making The present application is directed to ceramic compositions and, more specifically, to a silicon carbide composition and method of making it through liquid phase sintering. In one embodiment, the present invention is directed to an unsintered ceramic body including ... | 07/13/2004 |
| 6716800 | Composite body of silicon carbide and binderless carbon, process for producing such composite body, and article of manufacturing utilizing such composite body for tribological applications A composite body of silicon carbide having binderless, allotropic carbon granules distributed throughout is produced. The nominal size of the binderless allotropic carbon granules can range from 5 to 500 micrometers. The concentration of the binderless allotropic ca... | 04/06/2004 |
| 6692839 | Titanium based composites and coatings and methods of production A titanium based composite which includes a Ti(Al,O) base matrix, discrete ceramic particles, and an oxide layer on the surface of the composite. The discrete ceramic particles are integrally associated with the Ti(Al,O) base matrix and the oxide layer, s... | 02/17/2004 |
| 6680267 | Silicon carbide ceramic composition and method of making The present application is directed to ceramic compositions and, more specifically, to a silicon carbide composition and method of making it through liquid phase sintering. In one embodiment, the present invention is directed to an unsintered ceramic body... | 01/20/2004 |
| 6620756 | Ceramic matrix composite cutting tool material A reinforcing material is uniformly dispersed in a yttrium aluminum garnet matrix material for use as a machine tool material specially suited for machining Ti or a Ti alloy. The matrix material and the reinforcing material are present in proportions sele... | 09/16/2003 |
| 6605556 | High temperature composite material formed from nanostructured powders The present invention relates to high temperature composite materials formed from nano-sized powders suitable for use in the manufacture of jet engine components. The composite materials consist essentially of a matrix formed from a powdered material havi... | 08/12/2003 |
| 6582629 | Compositions for ceramic igniters Ceramic igniter compositions are provided that contain components of conductive material and insulating material, where the insulating material component includes a relatively high concentration of metal oxide. Ceramic igniters of the invention are partic... | 06/24/2003 |
| 6562745 | Aging resistant, porous silicon Carbide ceramic igniter This invention relates to an aging resistant SiC igniter having a second layer of recrystallized SiC within the body.... | 05/13/2003 |
| 6548787 | Ceramic heater A ceramic substrate for a ceramic heater includes aluminum nitride, silicon nitride or silicon carbide as the main component for increasing mechanical strength and improving thermal shock resistance, and a proper additive for controlling thermal conductiv... | 04/15/2003 |
| 6531423 | Liquid-phase-sintered SiC shaped bodies with improved fracture toughness and a high electric resistance The invention relates to a polycrystalline SiC shaped body, which consists of 96% by weight to 99.5% by weight of hard-material grains having a core/shell structure, 0 to 0.1% by weight free carbon, remainder a partially crystalline binder phase; having t... | 03/11/2003 |
| 6458732 | Lightweight dry refractory A dry refractory composition having superior insulating value. The dry refractory composition also may have excellent resistance to molten metals and slags. The composition includes filler lightweight material, which may be selected from perlite, vermicul... | 10/01/2002 |
| 6417126 | Ceramics and process for producing The present invention provides a process for producing alumina matrix carbide and boride reinforced ceramic composites wherein for any particular composite, the relative density is about 97% or more of the theoretical density. The composites are prepared ... | 07/09/2002 |
| 6398991 | Processes for making a silicon carbide composition Exemplary silicon carbide ceramic bodies having inclusions therein are produced according to the invention. An exemplary ceramic body includes silicon carbide in major amounts and unreacted particles of an additive in minor amounts which are bonded to the... | 06/04/2002 |
| 6328913 | Composite monolithic elements and methods for making such elements A composite monolithic element for use as a hot surface ignitor or the like includes first and second regions or layers. The first region or layer comprises a low pressure ejection molded mixture of silicon carbide and silicon nitride particles or other c... | 12/11/2001 |
| 6297183 | Aging resistant porous silicon carbide ceramic igniter This invention relates to an aging resistant SiC igniter having a second layer of recrystallized SiC within the body.... | 10/02/2001 |
