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| Number | Title | Issue Date |
| 8163666 | Taphole mix It is intended to provide a taphole mix capable of forming SiC bonds with minimum of an excess and a deficiency in components thereof, and excellent in drillability. A fine particle fraction having a particle diameter of 75 μm or less is comprised of three componen... | 04/24/2012 |
| 8133830 | Silicon nitride sintered compact and sliding member using the same A silicon nitride sintered compact contains silicon nitride grains, and a sintering aid component in a range of 2 to 15 mass %. The silicon nitride grains include needle crystal grains each having a long diameter L of 10 μm or less and a ratio (L/S) of the long dia... | 03/13/2012 |
| 7642209 | Silicon nitride sintered material and method for manufacturing A silicon nitride sintered material includes a silicon nitride crystal and a grain boundary layer that contains at least two of a first metal silicide (a metal silicide having, as a first metal element, at least one selected from the group consisting of Fe, Cr, Mn a... | 01/05/2010 |
| 7368076 | Method for producing a silicon nitride filter A method for producing a silicon nitride filter, which comprises heat-treating in nitrogen a green body comprising from 60 to 95 mass % of metal silicon particles having an average particle diameter of from 10 to 75 μm, wherein particles having particle diameters o... | 05/06/2008 |
| 7332695 | Carbon heating element and method of producing same A carbon heating element having an arbitrary specific resistance and an arbitrary shape which are arbitrary necessary as a heating element, and a method of producing the same. The carbon heating element is obtained by uniformly dispersing one or at least two metal o... | 02/19/2008 |
| 7294596 | Sintered ceramic material with improved properties and method for its manufacturing A sintered ceramic material comprises a crystalline phase and an intergranular phase comprising a glass phase. The material is manufactured from a starting powder being mixed with an additive comprising one or more metal from a group of Li, Na, Mg, Ca, Sr, Ba, Sc, Y... | 11/13/2007 |
| 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 |
| 7192899 | Silicon nitride sintered body having high heat conductivity and silicon nitride structural element A silicon nitride sintered body exhibiting a high heat conductivity, the silicon nitride sintered body includes a rare earth element in an amount of 2 to 17.5 mass % in terms of the oxide thereof, Fe in an amount of 0.07 to 0.5 mass % in terms of the oxide thereof, ... | 03/20/2007 |
| 7163656 | Method for making dense polycrystalline aluminum oxynitride A dense polycrystalline aluminum oxynitride body is produced. According the method of production, aluminum oxide (alumina) powder and 26 to 40 mole % aluminum nitride powder is mixed to form a very fine powder mixture. The powder mixture is shaped and hot pressed at... | 01/16/2007 |
| 7157393 | Carbide and nitride ternary ceramic glove and condom formers A slip-casted article former containing ternary ceramics, particularly of carbide and nitride materials, having the formula M.sub.n+1AX.sub.n (MAX), where M is a transition metal, A is an element from Groups IIIA and IVA of the periodic table, X is nitrogen or carbo... | 01/02/2007 |
| 7153484 | Porous SiNproducing method A producing method of a porous Si3N4 having high porosity and formed of Si3N4 particles having a high aspect ratio includes the following steps. A compound of a rare earth element as a first sintering agent is mixed in an ... | 12/26/2006 |
| 7141518 | Durable charged particle coatings and materials This invention concerns coatings having high surface area materials and at least one metal ion adsorbed onto the high surface area material as well as substrates having the coating and methods of applying the coating. The substrates may be films, woven fabrics or ma... | 11/28/2006 |
| 7135140 | Method of producing silicon nitride honeycomb filter A method for producing a silicon nitride honeycomb filter, which comprises heat-treating in a nitrogen atmosphere a green body comprising from 50 to 85 mass % of metal silicon particles having an average particle diameter of from 5 to 50 μm, from 5 to 30 mass % of ... | 11/14/2006 |
| 7109137 | Methods for making microporous ceramic materials The present invention provides a method for making a microporous ceramic material and includes the steps of (a) preparing a starting material for firing comprising a nonoxide ceramic precursor containing silicon as an essential component; (b) heating the starting ma... | 09/19/2006 |
| 7056849 | Nanoscale ordered composites of covalent ceramics for high-temperature structural applications via block-copolymer-assisted assembly and method of making A method of making nanoscale ordered composites of covalent ceramics through block copolymer-assisted assembly. At least one polymeric precursor is mixed with a block copolymer, and self-assembly of the mixture proceeds through an annealing process. During the annea... | 06/06/2006 |
| 7041366 | Porous silicon nitride ceramics and method for producing the same The invention provides porous silicon nitride ceramics that having uniform, fine closed pores and a manufacturing method thereof. Metal Si powder is mixed with a sintering additive, followed by thermal treatment, which is a pre-process for forming a specific grain b... | 05/09/2006 |
| 7008893 | Silicon nitride-based composite sintered body and producing method thereof The present invention provides a silicon nitride-based sintered body having excellent mechanical properties from room temperature to a medium-low temperature range, a low friction coefficient and excellent wear resistance; a raw material powder for the sintered body... | 03/07/2006 |
| 6982070 | Process for synthesizing spinel type silicon nitride powders A large amount of spinel type silicon nitride powders of a high-pressure phase is produced by mixing raw powders having a particle size of 10 μm or less of α-, β- or amorphous silicon nitride, each of which is a low pressure phase, with non-nitrified metal powder... | 01/03/2006 |
| 6958303 | Electro-static dissipative ceramic products and methods The invention provides partially stabilised zirconia and alumina based electro-static dissipative or ESD ceramic compositions. The proposed ceramic compositions include specific amounts of dopants comprising one or more metal oxides selected from iron oxide, chromiu... | 10/25/2005 |
| 6869902 | Silicon nitride porous body and method of manufacturing the same A silicon nitride porous body (5) obtained by nitriding a molded body having metallic silicon (3) as a main component, the porous body having a porous structure with an average pore diameter of 3 μm or above, and wherein the total content of silicon a... | 03/22/2005 |
| 6863963 | Silicon nitride member, method for manufacturing the same, and cutting tool A silicon nitride member, a method for manufacturing the silicon nitride member and a cutting tool are disclosed. A cutting tool 1 includes a substrate 3 formed through sintering of a silicon nitride material, and a hard film 5 composed of a plu... | 03/08/2005 |
| 6846764 | Silicon nitride porous body and method of manufacturing the same A silicon nitride porous body which is obtained by nitriding a molded body having metallic silicon as a main component and by performing a high temperature heating treatment at a temperature higher than the nitriding temperature, and which has a porous structure wit... | 01/25/2005 |
| 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 |
| 6784131 | Silicon nitride wear resistant member and method of manufacturing the member The present invention provides a silicon nitride wear resistant member composed of silicon nitride sintered body containing 1-10 mass % of rare earth element in terms of oxide thereof as sintering agent, wherein a total oxygen content of the silicon nitride sintered... | 08/31/2004 |
| 6777360 | Ceramic material, method of producing same, and formed product thereof A ceramic material suitable for use in production of paving tiles, construction tiles, flooring in offices, flooring in machinery plants and so forth is obtained by a method comprising steps of mixing defatted bran derived from rice bran with a thermosetting resin b... | 08/17/2004 |
| 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 |
| 6749930 | Corrosion-resistive members A corrosion-resistive member is provided, including a corrosion-resistive face that is exposed to a corrosive gas causing ion bombardmemt. At least a part of the corrosion-resistive member is composed of a sintered silicon nitride body having an open porosity of not... | 06/15/2004 |
| 6736875 | Composite cordierite filters Composite cordierite honeycomb structures especially suitable for diesel exhaust filtration applications comprise a non-oxide polycrystalline phase constituting 10-70% by weight, with the remainder of the ceramic material constituting a cordierite phase, the non-oxi... | 05/18/2004 |
| 6709999 | Molded part of ceramic material derived from polymers, process for producing ceramic molded parts and sliding element having a molded part A molded part of a ceramic material derived from polymers includes a composite body of a single-phase or multi-phase, amorphous, partially crystalline or crystalline matrix of silicon carbide (SiC), silicon nitride (Si3N4), silicon dioxide (SiO... | 03/23/2004 |
| 6689202 | Molds for the manufacture of a dental restoration and methods of making dental restorations Blocks of material are prepared in a variety of shapes and sizes to be used in the fabrication of models for dental restorations. The material comprises a partially sintered ceramic material. The blocks are used to manufacture molds using CAD/CAM methods ... | 02/10/2004 |
| 6670294 | Corrosion-resistive ceramic materials and members for semiconductor manufacturing Corrosion-resistive ceramic materials include a silicon based ceramic, wherein a percentage of respective metal elements other than metal elements constituting sintering agents and silicon is not more than 10 weight ppm. The corrosion-resistive ceramic ma... | 12/30/2003 |
| 6642165 | Wear resistant member for electronic equipment, and bearing and spindle motor therewith Wear resistant member for electronic equipment comprises a silicon nitride sintered body that contains conductivity enhancing particles, and has electrical resistivity in the range from 1 to 105 Ω.multidot.m. In silicon nitride sintered body, ... | 11/04/2003 |
| 6599637 | Silicon nitride composite substrate A Si3 N4 composite substrate which manifests no generation of cracking on the substrate even by mechanical shock or thermal shock, and is excellent in heat radiation property and heat-cycle-resistance property is obtained by using a ... | 07/29/2003 |
| 6593261 | Silicon nitride porous body and its production process A silicon nitride porous body which is a body having a generally columnar outer shape and at least two through-holes mutually parallel to one another and which has generally perpendicularly oriented columnar crystals on the surface of the through-holes.... | 07/15/2003 |
| 6589448 | Ceramic ball for bearing and ceramic ball bearing using the same A ceramic bearing ball in which at least a portion of a constituent ceramic is formed of an electrically conductive inorganic compound phase, whereby a proper electrical conductivity is imparted to the ceramic. Thus, electrifying of a bearing ball is prev... | 07/08/2003 |
| 6573208 | Homogeneous bulky porous ceramic material A homogeneous bulky porous ceramic material is provided, the average pore diameter D50 of which is less than 4 μm and the closed porosity of which is less than 2 μm, and having a bubble point that matches the pore diameter measured on the material. A ho... | 06/03/2003 |
| 6562746 | Cubic boron nitride-based sintered material and manufacture thereof The present invention provides a cubic boron nitride-based sintered material excellent in durability and usable for a cutting tool material capable of carrying out high speed cutting of at least a high grade cast iron represented with a Ni-Resist cast iro... | 05/13/2003 |
| 6558821 | Ceramic sinter, and wear resistant member and electronic component member using thereof In ceramic sinter consisting of at least one kind selected from a group consisting of silicon nitride, zirconia, silicon carbide, cermet, SIALON, aluminum nitride and alumina, wear resistant member and electronic component member using thereof, skewness a... | 05/06/2003 |
| 6534428 | Titanium diboride sintered body with silicon nitride as a sintering aid The present invention relates to a titanium diboride sintered body and a method for manufacturing thereof wherein silicon nitride is added to a titanium diboride as a sintering aid. The sintered body according to the present invention has a fine structure... | 03/18/2003 |
| 6461989 | Process for forming 312 phase materials and process for sintering the same A process is provided for forming a material comprising an M3 X1 Z2 phase comprising the steps of: (a) providing a mixture of (i) at least one transition metal species, (ii) at least one co-metal species selected from the ... | 10/08/2002 |
