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Pore-forming

Subclass of:

501 - Compositions: ceramic

501001000 - CERAMIC COMPOSITIONS

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Class / Patent application numberDescriptionNumber of patent applications / Date published
501080000 Pore-forming 46
20080242529Composite - A ceramic and metal composite and method of manufacture, is provided in which a ceramic phase is mixed with a metal phase to form a composite able to be applied to a substrate or formed to any shape/configuration required. For example, the composite can form, or be applied to a substrate for use as biomedical implants which can assist in and enhance osteo development or at least provide a material of better biocompatibility/bioactivity and osteo integration or infiltration with the composite. Advantageously, the ceramic and metal phases are bioactive/biocompatible. In a preferred embodiment, the composite is a homogenous mix ceramic and metal phase (and/or bioglasses) when analyzed on a micro meter scale.10-02-2008
20080269040Sintered Ceramics for Mounting Light-Emitting Element - A sintered ceramics for mounting a light-emitting element, which is capable of realizing high optical reflectance over the entire region from ultraviolet radiation to visible light. The sintered ceramics has a light-reflective face of which reflectance to light in each wavelength in the range of 250 nm˜750 nm is 70% or more. The light-reflective face satisfies following reaction:10-30-2008
20080300127Aluminum titanate ceramic forming batch mixtures and green bodies with pore former - A ceramic forming batch mixture including inorganic batch materials, such as sources of alumina, titania, and silica, a low amount of one or more pore formers including at least one starch; an organic binder; and a solvent. Also disclosed is a method for producing a ceramic article involving mixing the inorganic batch materials with the low amount of pore former, adding an organic binder and a solvent, forming a green body; and firing the green body. A green body having a low amount of the one or more pore formers including starch is disclosed.12-04-2008
20080318759Method of Producing Porous Ceramic Supports of Controlled Microstructure - Process for producing a ceramic part from a ceramic powder, comprising the following successive steps: a step (a) of deagglomerating the ceramic powder in liquid phase; a step (b) of incorporating pore formers into the powder dispersion prepared in step (a); a step (c) of removing the liquid medium from the dispersion prepared in step (b); a step (d) of forming agglomerates form the powders obtained in step (c); a step (e) of removing the binder from the preform prepared in step (d); and a step (f) of sintering the binderless part prepared in step (e).12-25-2008
20090011919PROCESS FOR PRODUCING HONEYCOMB STRUCTURE - A process for producing a honeycomb structure by obtaining clay from a cordierite-forming raw material containing an alumina source, a silica source, and a magnesia source; and forming the clay into a honeycomb shape, wherein a material having, in its volume particle size distribution, a 50 volume % particle size (V50) [μm] of 1 to 25 μm is used, as each of alumina source, silica source, and magnesia source; and a material having, in the volume particle size distribution of the whole cordierite-forming raw material, a ratio of 90 volume % particle size (V01-08-2009
20090023576Method for the surface treatment of bead polymers - A method for the surface treatment of bead polymers is to be prepared, by means of which bead polymers are treated in a particularly simple and effective manner such that upon addition to unfinished ceramic pieces, in particular, their strength and dimensional stability increase. To this end, the bead polymers are conducted to a device which is used for comminution, in particular, to a mill, in which the surface of the bead polymers is purposefully scratched or roughened in a uniformly mechanical manner.01-22-2009
20090062105Method of firing green bodies into porous ceramic articles - A method of forming a porous ceramic article having a narrow pore distribution includes heating a green body containing ceramic forming raw materials in a firing environment that raising the temperature of the firing environment to a peak temperature, then reducing the temperature to a hold temperature in order to form porous ceramic.03-05-2009
20090088311BIO-MATERIAL AND METHOD OF PREPARATION THEREOF - A porous bio-material and a method of preparation thereof. The method includes the following steps. First, a body is formed by mixing a bio-ceramic powder, a highly water-absorbing natural organic material and a liquid. Then, the body is partially dried to form a machinable porous bio-material. The sizes of pores and porosity can be tailored by controlling the extent of drying so that the porous bio-material with acceptable strength can be obtained.04-02-2009
20090221414Slurry and Ceramic Composite Produced with it - The invention relates to ceramic slurry from which ductile ceramic fibrous composites can be produced. They can be stretched under tension without any of the brittleness typical for ceramic materials occurring.09-03-2009
20090298670METHOD FOR REMOVING GRAPHITE FROM CORDIERITE BODIES - A method of removing graphite from a core region of a cordierite-forming green body and a method of firing a cordierite-forming green body to form a fired cordierite body. A dried cordierite-forming green body containing graphite is first heated so that the core region is at a first temperature in a range from about 950° C. up to about 1100° C. The green body is then either held at the first temperature or heated to a second temperature in a range from about 1050° C. up to about 1160° C.; in either case resulting in removal of a majority of graphite from the core region. The green body may then be heated to a third temperature in a range from about 1300° C. up to about 1350° C. at a second predetermined heating rate to remove any residual graphite from the core region and then heated to a temperature of at least 1390° C. to form the fired cordierite body.12-03-2009
20090298671Compositions for Preparing Low Dielectric Materials Containing Solvents - Silica-based materials and films having a dielectric constant of 3.7 or below and compositions and methods for making and using same are disclosed herein. In one aspect, there is provided a composition for preparing a silica-based material comprising an at least one silica source, a solvent, an at least one porogen, optionally a catalyst, and optionally a flow additive wherein the solvent boils at a temperature ranging from 90° C. to 170° C. and is selected from the group of compounds represented by the following formulas: HO—CHR12-03-2009
20100029462Ceramic precursor having improved manufacturability - A batch mixture including ceramic forming ingredients; a pore former mixture of a graphite and a starch; a hydroxypropyl methyl cellulose binder; and a liquid vehicle, as defined herein. Also disclosed is a method for producing a ceramic precursor article having enhanced throughputs in extrusion and drying as defined herein.02-04-2010
20100099547Ceramic Porous Body With Communication Macropores and Process for Producing the Ceramic Porous Body - The present invention is a method for producing a ceramic porous body with high porosity and continuous macropores, which comprises mixing a ceramic powder with an aqueous solution of a gelable water-soluble polymer to form a slurry, gelling for a while to fix the tissue structure, freezing it to produce ice crystals in the gel tissue and creating structures that become continuous pores, thawing the ice by controlled atmospheric substitution-type drying method with the resulting water being replaced without damaging the gel, and then sintering it to produce a ceramic porous body having various porosities, pore diameters and pore shapes, while conventionally cracks and contraction were likely to occur during drying when the solids concentration of the slurry is less than 20 vol %, with the method of the present invention it is possible to control these problems even at a solids concentration of 10 vol % or less, manufacture and provide a ceramic porous body with a porosity of 72% to 99% and a compression strength of 0.4 MPa or more.04-22-2010
20100113249ALKYLCELLULOSE SALT BINDER FOR GREEN BODY MANUFACTURE - A batch mixture including ceramic-forming ingredients, a pore former, a binder comprising an ammonium salt of an alkylated cellulose binder, and a liquid vehicle, as defined herein. Also disclosed is a method for producing a ceramic precursor article as defined herein having excellent extrusion properties.05-06-2010
20100152015COMPOSITE MATERIAL AND COMPOSITE COMPONENT, AND METHOD FOR PRODUCING SUCH - A composite material, a composite component made thereof, and a method for producing a metal-ceramic composite material or a composite component are provided. The composite material or the composite component is produced by the method described in the following. In a first step, a porous ceramic preform is produced from a ceramic starting mass, and in a second step the infiltration of the porous ceramic preform with a molten metal takes place, the ceramic starting mass having a ceramic main component and a ceramic minor component that reacts with this main component, and the minor component reacts at least partially with the main component during the first and/or second step.06-17-2010
20100298113METHODS OF MAKING CERAMIC BODIES USING CATALYZED PORE FORMERS AND COMPOSITIONS FOR MAKING THE SAME - The present disclosure relates to methods of making ceramic bodies using catalyzed pore formers and compositions for making the same.11-25-2010
20110039682METHOD FOR SYNTHESIZING ONE-DIMENSIONAL HELICAL NANOPOROUS STRUCTURES AND METHOD FOR SYNTHESIZING GLYCINE-DERIVED SURFACTANT FOR SYNTHESIZING HELICAL NANOPOROUS STRUCTURES - Disclosed herein are a method for synthesizing one-dimensional helical mesoporous structure, in which a self-assembled structure of a glycine-derived surfactant is used as a template at room temperature to synthesize the one-dimensional helical mesoporous silica structures having a uniform pore size and a method for synthesizing a glycine-derived surfactant for synthesizing the helical nanoporous structures, in which relatively expensive surfactant can be easily recovered using an organic solvent and reused, which provides economical and environment friendly effects and the glycine-derived surfactant is synthesized by homogeneously heating a reaction product of glycine and phthalic anhydride by dielectric heating with irradiation of microwave, whereby it is possible to realize high yield of the glycine-derived surfactant, shortened synthesis time and increase in energy efficiency, leading to improvement in productivity and reduction in production cost.02-17-2011
20110082023CELLULAR CERAMIC PLATES WITH ASYMMETRICAL CELL STRUCTURE AND MANUFACTURING METHOD THEREOF - A method for the continuous production of a cellular ceramic plate having asymmetric cells comprising thermally treating ceramic particles and a blowing agent in a foaming furnace while conveying said ceramic particles and said blowing agent at a first speed thereby forming a cellular ceramic plate, and annealing said cellular ceramic plate in an annealing lehr by cooling it down while conveying it at a second speed, larger than said first speed, thereby stretching and cooling said cellular ceramic plate.04-07-2011
20110124486Aluminum Titanate-Containing Ceramic-Forming Batch Materials And Methods Using The Same - The present disclosure relates to aluminum titanate-containing ceramic-forming batch materials and methods using the same.05-26-2011
20120135854Method of Forming Porous Ceramic Articles Using Inert Gas - A method of manufacturing a porous ceramic article is provided that includes injecting a gas into a precursor batch material. The gas is pressurized to a positive gauge pressure. Exemplary gasses that can be injected into the precursor batch material include at least one of nitrogen, helium, neon, argon, krypton, and xenon. Air can also be injected into the precursor batch material, including air in which at least a portion of CO05-31-2012
20120220443CERAMIC-BODY-FORMING BATCH MATERIALS COMPRISING SILICA, METHODS USING THE SAME AND CERAMIC BODIES MADE THEREFROM - The disclosure relates to ceramic-body-forming batch materials comprising at least one pore former and inorganic batch components comprising at least one silica source having a specified particle size distribution, methods of making ceramic bodies using the same, and ceramic bodies made in accordance with said methods. The disclosure additionally relates to methods for reducing pore size variability in ceramic bodies and/or reducing process variability in making ceramic bodies.08-30-2012
20140336033HIGH POROSITY CORDIERITE HONEYCOMB ARTICLES - Methods of making a porous cordierite ceramic honeycomb article are provided. In example methods, a batch composition includes a quantity of non-crosslinked pore former provided as a superaddition of about 20% or less of a dry weight of a quantity of inorganic components. Batch compositions are also provided that include a quantity of clay and other substantially nonfibrous inorganic components sufficient to yield an article including cordierite. Example batch compositions can include clay having a median particle size of about 7 μm or less and/or provided in an amount that is 10% or less of the dry weight of the quantity of inorganic components.11-13-2014
20140342898POROUS CERAMIC ARTICLE AND METHOD OF MANUFACTURING THE SAME - The present disclosure relates to porous ceramic articles and a method of making the same. The porous ceramic articles have microstructure of sinter bonded or reaction bonded large pre-reacted particles and pore network structure exhibiting large pore necks. The method of making the porous ceramic articles involves using pre-reacted particles having one or more phases. A plastic ceramic precursor composition is also disclosed. The composition includes a mixture of at least one of dense, porous, or hollow spheroidal pre-reacted particles and a liquid vehicle.11-20-2014
20160090327METHOD OF MAKING A POROUS SINTERED BODY, A COMPOUND FOR MAKING THE POROUS SINTERED BODY, AND THE POROUS SINTERED BODY - A thermal formation sintering compound containing a binder, a sinterable powder material and a pore formation material, for formation into a predetermined shape in a thermal formation step, removal of the binder in a degreasing step, and sintering of the powder material in a sintering step is provided. The binder contains a low-temperature draining component which melts in the thermal formation step, begins draining at a temperature lower than a draining temperature of the pore formation material, and drains at a temperature lower than a temperature at which the pore formation material drains; and a high-temperature draining component which melts in the thermal formation step, begins draining after the pore formation material begins draining, and drains at a temperature higher than does the pore formation material.03-31-2016
501081000 By use of organic combustible material 11
20090018008PROCESS FOR THE PREPARATION OF A SINTERED CERAMIC, CERAMIC THUS OBTAINED AND SPARK PLUG COMPRISING IT - Process for the preparation of a ceramic wherein: 01-15-2009
20130244860CERAMIC-BODY-FORMING BATCH MATERIALS COMPRISING SILICA, METHODS USING THE SAME AND CERAMIC BODIES MADE THEREFROM - The disclosure relates to ceramic-body-forming batch materials comprising at least one pore former and inorganic batch components comprising at least one silica source having a specified particle size distribution, methods of making ceramic bodies using the same, and ceramic bodies made in accordance with said methods. The disclosure additionally relates to methods for reducing pore size variability in ceramic bodies and/or reducing process variability in making ceramic bodies.09-19-2013
20140249020CERAMIC BODY FORMING BATCH MATERIALS COMPRISING SILICA METHODS USING THE SAME AND CERAMIC BODIES MADE THEREFROM - The disclosure relates to ceramic-body-forming batch materials comprising at least one pore former and inorganic batch components comprising at least one silica source having a specified particle size distribution, methods of making ceramic bodies using the same, and ceramic bodies made in accordance with said methods. The disclosure additionally relates to methods for reducing pore size variability in ceramic bodies and/or reducing process variability in making ceramic bodies.09-04-2014
20160176765METHOD FOR PRODUCING LIGHT CERAMIC MATERIALS06-23-2016
501082000 Of resin or vegetable origin material 7
20090099003CERAMIC MOLDED PRODUCT AND MANUFACTURING METHOD THEREOF - A method of manufacturing a ceramic molded product includes adding a binder mainly comprising a saccharide and water to a powder of ceramics such as silicon carbide and stirring the same to form an aqueous sludge having a fluidity, casting the sludge into an elastic die, molding the sludge while applying vibrations in a negative pressure state, solidifying the sludge by putting the die in which the sludge is cast to a temperature below freezing point for freeze-drying, and to a temperature where the binder is not frozen completely, then thawing the sludge in the negative pressure state and subliming and evaporating the water content in the binder, taking the molded product solidified in the die out of the die, further dewatering the demolded product by elevating the temperature to a temperature where the saccharide in the binder is dissolved, and then sintering the molded product.04-16-2009
20110136653METHOD FOR THE PRODUCTION OF A POROUS, CERAMIC SURFACE LAYER - A method for producing a porous ceramic surface layer on a substrate includes providing a mixture including at least one polymer and at least one ceramic material and applying the mixture to the substrate.06-09-2011
20110294650POROUS CERAMIC PROCESSING USING ACO-PRILLED WAX AND NON-IONIC SURFACTANT MIXTURE - This disclosure is directed to porous ceramic processing; and in particular to a method using selected pore forming materials to avoid high exotherms during the ceramic firing process, and the green bodies formed using the selected pore forming materials. The selected pore forming materials are homogeneous wax/non-ionic surfactant particles formed by a prilling process in which the wax is melted and the non-ionic surfactant is mixed into the wax prior to prilling. The disclosure is useful in the manufacture porous ceramic honeycomb bodies including ceramic honeycomb filter traps.12-01-2011
20120157291BONE SUBSTITUTE MATERIAL - A method of fabricating a bone substitute material comprises the steps of providing a foam material (06-21-2012
501083000 Of cellulosic material 3
20100222200Aluminum Titanate-Containing Ceramic-Forming Batch Materials And Methods Using The Same - The present disclosure relates to aluminum titanate-containing ceramic-forming batch materials and methods using the same.09-02-2010
20100234206Controlled Pore Size Distribution Porous Ceramic Honeycomb Filter, Honeycomb Green Body, Batch Mixture And Manufacturing Method Therefor - A porous ceramic honeycomb filter manufactured from an oxide-based ceramic material having a pore size distribution with d09-16-2010
20160083299CERAMIC PRECURSOR BATCH COMPOSITIONS FOR INCREASED STIFFENING ONSET TEMPERATURE USING ORGANIC ADDITIVE HETEROATOM POLYOLS - A ceramic precursor batch composition comprising inorganic ceramic-forming ingredients, a binder, an aqueous solvent and a heteroatom polyol agent. The heteroatom polyol agent can be represented by X(R) where X is at least one of S, N, and P, and R is at least two of CH03-24-2016
501084000 By gas blowing, foaming agent, or in situ reactive gas generation 6
20080287281Method For Producing a Wear-Resistant Reaction-Bounded Ceramic Filtering Membrane - The invention relates to a method for producing a wear-resistant reaction-bounded ceramic filtering membrane, during which a porous metallic or non-metallic support for producing a green body is provided with a suspension. This suspension is obtained from a dispersant and from a dispersed phase, and this dispersed phase can be obtained from at least one ceramic raw material from the group of metal nitrides and, optionally, from at least one other ceramic raw material. The invention provides that the green body produced in this manner is fired at a temperature ranging from 700° C. to 1250° C. under atmospheric pressure in a oxidizing atmosphere in order to obtain a phase change of at least the ceramic raw material.11-20-2008
20080312064Porous, Fired Ceramic Foam - The invention relates to a porous, fired ceramic foam having a total porosity of between 50 and 92% and an intergranular porosity of at least 5%. In particular, the invention relates to a recrystallised silicon carbide foam.12-18-2008
20090018009Method For Preparing a Porous Ceramic Material With High Heat Resistance - The present invention relates to a method for preparing a porous ceramic material, particularly for thermal insulation, comprising the steps of: 01-15-2009
20090069167METHOD OF OBTAINING POROUS CERAMICS - A method of manufacturing a porous ceramic part, comprising the following steps in succession: 03-12-2009
20090197756WATER-BASED CERAMIC FOAMS SHOWING IMPROVED GEL STRENGTH - A method of preparing a gelled ceramic-based foam comprising forming a slurry comprising at least water, a ceramic, albumin and an aldehyde, such that the ratio of the aldehyde to the albumin is from about 60:1 to about 200:1, and frothing the slurry, such that the albumin polymerizes to form a gelled ceramic-based foam. The foam shows improved capability to resist collapse during any subsequent handling, drying to greenware, or firing steps. This enables simplified and more economical production of highly porous ceramics.08-06-2009
20090325780Ultrastable Particle-Stabilized Foams and Emulsions - Described is a method to prepare wet foams exhibiting long-term stability wherein colloidal particles are used to stabilize the gas-liquid interface, said particles being initially inherently partially lyophobic particles or partially lyophobized particles having mean particle sizes from 1 nm to 20 μm. In one aspect, the partially lyophobized particles are prepared in-situ by treating initially hydrophilic particles with amphiphilic molecules of specific solubility in the liquid phase of the suspension.12-31-2009
501085000 By volatilizing or heat expansion of water or other noncombustible material 5
20090093358Porous Silicone Carbide - A porous refractory product includes a matrix of sintered silicon carbide having a porosity of about 45% to about 65%. The matrix is formed by heating in a noble gas atmosphere a cast preform including a mixture of alpha-silicon carbide and boron carbide each having a particle size of less than about 1 micron. The heating causes the formation of gaseous SiO within the silicon carbide matrix, which, in turn, forms pores having an average size of less than about 1 micron. The porous refractory products herein are suitable for use in a variety of applications including for use in high temperature particulate filtering applications.04-09-2009
20090247389METHOD FOR MANUFACTURING CORDIERITE CERAMICS - There is provided a method for manufacturing cordierite ceramics by forming and heating a cordierite-forming raw material containing α-alumina. A degree of orientation [expressed by (I10-01-2009
20100056355GAS PORE FORMER IN CELLULAR MONOLITHS - Porous ceramic articles may be produced by using a gas as a pore former, where the gas is injected into a ceramic precursor batch material and mixed. Pressure is then applied to mixture such that the gas liquefies. The pressure is maintained during formation of a green body, maintaining the gas in a liquefied state. After formation of the green body, the pressure is removed whereby the gas returns to a gaseous state, creating pores in the green body. The green body may then be fired to produce a porous ceramic article.03-04-2010
20150018195CERAMIC FOAM - The invention relates to a method for preparing a ceramic material, in particular porcelain, having a porous, foam-like structure, comprising the steps of providing a clay composition comprising kaolin clay; alkali metal salt and/or alkaline earth metal salt, or a mixture thereof; a plastic mineral clay; and a frit; and water; shaping said composition in a mould; drying said composition in said mould by subjecting it to temperatures below 140° C.; firing said composition in said mould by subjecting it to temperatures within the range of 700-1200° C. The invention also pertains to objects made of this foamed ceramic material.01-15-2015
20150038318Building Brick Comprising A Porous Material, The Microstructure Of Which Is Controlled By The Addition Of A Nucleating Agent During The Process Of Preparing Same - A building brick with cellular structure comprising a porous material, said porous material being obtained by a process comprising the following successive steps: 02-05-2015

Patent applications in class Pore-forming

Patent applications in all subclasses Pore-forming

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