Matches 151 - 200 out of 496 < 1 2 3 4 5 6 7 8 9 10 >
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5591379 Moisture getting composition for hermetic microelectronic devices  
This invention describes a composition of matter having moisture gettering properties and applicable as coating or adhesive in a hermetic microelectronic device. The composition is applied to the...
5580834 Self-sintered silicon carbide/carbon graphite composite material having interconnected pores which may be impregnated and raw batch and process for producing same  
A self-sintered silicon carbide/carbon-graphite composite material having interconnected pores which may be impregnated, and a raw batch and process for producing the composite material, is...
5573919 Assay using an absorbent material  
An assay for detecting an analyte which comprises applying a sample containing analyte to a surface of an absorbent material having at least one binder for the analyte supported on at least a...
5573580 Black wash for producing mould coatings  
A founder's black for producing mould coatings is disclosed, whose main component consists of finely ground refractory to highly refractory inorganic materials. The black wash contains 1 to 40% by...
5571848 Method for producing a microcellular foam  
The invention provides a method for producing a microcellular foam of a curable material by replicating a dissolvable particle preform and leaching away the dissolvable particle preform to yield...
5563212 Synthesis of microporous ceramics  
The present invention provides for microporous ceramic materials having a surface area in excess of 50 m 2 /gm and an open microporous cell structure wherein the micropores have a mean width of...
5563106 Porous Articles  
A method of making a porous refractory article and a dispersion of particles in a liquid carrier, the method involving forming a dispersion of particles in a liquid carrier, introducing gas into...
5560874 Diffuser body  
A rigid, monolithic, porous gas diffusion element which is formed of a body of solid particles and which is comprised of a partially coated, permeable ceramic substrate is disclosed. The substrate...
5558849 Process for making inorganic gels  
A process for making inorganic gels by reaction of tetraalkoxy orthosilicates, tetraalkoxy titanates and tetraalkoxy zirconates with strong carboxylic acids. Water need not be present initially as...
5556689 Microporous thermal insulation molding  
A microporous thermal insulation molding comprising compressed thermal insulation material comprising 30-100% by weight of finely divided metal oxide, 0-50% by weight of opacifier, 0-50% by weight...
5552356 Boron subphosphide/aluminum oxide composite materials, processes for the production thereof and use thereof  
The present invention relates to boron subphosphide/aluminum oxide composite materials, to processes for the production of these materials and to the use thereof.
5549850 LaMnO.sub.3 -coated ceramics  
Processes are provided for forming composites comprising a LaMnO 3 perovskite coatings (or a related perovskite) on a mat of ceramic particles (e.g., fibers, microballoons, or mixtures thereof) or...
5530081 Plastic material composed of silicon carbide, directly-prepared polycarbosilane and organic solvent  
A plastic material composed of silicon carbide powder, polycarbosilane, organic solvent, and optionally boron compounds and/or other additives, preferably porosity agents; and the use of this...
5492870 Hollow ceramic microspheres by sol-gel dehydration with improved control over size and morphology  
Hollow microspheres of ceramic material are formed by a sol-gel technique involving forming and stabilizing an emulsion of an aqueous sol of the ceramic material in an organic phase, followed by...
5482904 Heat-insulating refractory material  
The present invention is intended to provide a heat-insulating refractory material, which does not contain environmentally and hygienically undesirable ceramic heat-insulating fibers, but only...
5460854 Impregnated ceramic core and method of making same  
A method of strengthening a fired porous ceramic core for use in investment casting includes the steps of providing a fired porous ceramic core, impregnating the core with an aqueous solution of a...
5447653 Method for the production of water purifying substances  
Water purifying substances produced by mixing raw material soil containing allophane expressed by: nSiO 2 .Al 2 O 3 .mH 2 O where, n is a number within the range of 1.3 to 2, and m is a number...
5443603 Light weight ceramic abrasive media  
A method for manufacturing abrasive tumbling media comprising discrete abrasive particles having a preselected size and shape made by firing a formed mixture primarily comprising a particulate...
5441919 Ceramic foams  
Ceramic foams in which the open cells are connected by a three-dimensional, substantially continuous ceramic matrix formed of interconnected hollow ligaments, are made from an open-cell,...
5439624 Method for forming porous ceramic materials  
A method for producing high surface area, thermally stable, microporous porous ceramic materials involves replacing a portion of the silicon in a sol or gel comprising silica (silicon dioxide) with...
5418195 Porous ceramic granules  
There is disclosed a process for preparing porous ceramic granules, comprising (a) preparing a foam from an aqueous mixture of a particulate aluminosiliceous material and a fluxing material; ...
5399535 Reticulated ceramic products  
A reticulated ceramic product is provided having from about 5 to about 95 percent, preferably from about 10 to about 90, percent of the total porosity attributable to mesopores. Reticulated ceramic...
5397752 Production of water resisting, hard, porous metasepiolite  
Disclosed is a porous sepiolite having an improved water-resistance and thermal shock resistance obtained by grinding, moisture-conditioning and molding sepiolite, and then calcining said molded...
5384291 Carbothermal synthesis precursors  
Ceramic precursor materials bound together by a product of a condensation reaction between a first reactant that has at least one reactive hydroxyl moiety, such as a carbohydrate, and a second...
5384290 Porous ceramic beads  
Ceramic beads having a bimodal pore distribution are prepared by a process involving a) formation of a ceramic particle slurry, b) adding a foamable prepolymer to the slurry to form a mixture, c)...
5384171 Structurally networked matrix ceramic composite material  
A structurally networked matrix ceramic composite material is disclosed as comprising either a continuous ceramic skeletal structure or a series of noncontinuous ceramic skeletal structure...
5382309 Method of making a fiber reinforced ceramic glass composites having tailored coefficient of thermal expansion  
Improved fiber reinforced composites having near zero coefficients of thermal expansion are described. The improved composites include reinforcing fibers and matrix material in which gap structures...
5366944 Vibratable refractory compositions  
A dry vibratable substantially alkali free refractory composition is disclosed for use as a disposable liner wherein the combination of a powdered metal utilized as a high temperature binder and an...
5360771 Light weight mineral foam and process for preparing the same  
Disclosed is a process for preparing a solid, light weight mineral foam which is stable during its preparation and during its subsequent curing and drying and which, thanks to its composition and...
5358910 Porous silicon carbide ceramics using filled polysiloxanes  
The preparation of porous ceramic bodies by sintering certain curable organopolysiloxanes filled with silicon carbide powders. This process is advantageous in that the green bodies have relative...
5344799 Formable ceramic compositions and method of use therefor  
A plastically deformable mixture and method for making a body from the mixture are disclosed. The mixture is composed of powder materials, which when fired form as predominant phases: ceramic,...
5340779 Manufacture of conical pore ceramics by electrophoretic deposition  
Ceramic bodies having conically shaped pores are produced by electrophoretic deposition from aqueous ceramic particle suspensions. The dense ceramic bodies may be fabricated in the form of tubes...
5322821 Porous ceramic beads  
Ceramic beads having a bimodal pore distribution are prepared by a process involving a) formation of a ceramic particle slurry, b) adding a foamable prepolymer to the slurry to form a mixture, c)...
5302558 Porous sepiolite, process for producing same and adsorptive decomposition catalyst composition utilizing such porous sepiolite  
Disclosed is a porous sepiolite having an improved water-resistance and thermal shock resistance obtained by grinding, moisture-conditioning and molding sepiolite, and then calcining said molded...
5296416 Method for producing ceramic composite foams  
Ceramic foams in which the open cells are connected by a three-dimensional, substantially continuous ceramic matrix formed of interconnected hollow ligaments, are made from an open-cell,...
5279993 Gas injection stone and process of manufacture thereof  
A gas injection stone is manufactured by embedding in a refractory compound a plurality of adjacent and abutting nets. Thereby, when the refractory compound is solidified and when the nets...
5279904 Rigid insulating refractory material  
A refractory ceramic material, including a porous base refractory material and a zirconia protective layer covering walls of pores of the porous base refractory material, wherein the refractory...
5279779 High alumina insulating refractory product and method for making same  
The present invention provides an as-fired, high alumina, low silica, corrosion resistant, refractory product and a method for making said product where the product includes from about 50 wt. % to...
5278106 Inogranic particulate material comprising fine balls of uniform size and process for producing same  
An inorganic particulate material comprising fine balls approximately uniform in size and 0.1 to 50 μm in mean particle size and prepared by admixing an aqueous solution of at least one compound...
5252526 Insulating refractory  
A refractory mix for forming high strength, low thermal conductivity refractory shapes comprising from about 40 to 75% by weight of at least one dense refractory aggregate, about 10 to 30% by...
5249620 Process for producing composite materials with a metal matrix with a controlled content of reinforcer agent  
A process for producing composite materials with a metal matrix and with a content of powder reinforcer agent lower than is minimum theoretical compaction value, with said process being based on an...
5248705 Method of forming a porous carbonaceous preform from water-based slurry  
A method for forming a porous carbonaceous preform comprises, forming a mixture comprised of up to about 50 volume percent of furfuryl alcohol or tetrahydrofurfuryl alcohol, about 1 to 10 volume...
5242494 Foamable compositions  
This invention relates to a foamable silicate composition comprising (a) one or more alkali metal silicates, (b) a blowing agent, (c) a hardener which can be an acetate or a formate ester of a...
5240493 Process for preparing submicron/nanosize ceramic powders from precursors incorporated within a polymeric foam  
A process for preparing uniform, agglomerate free, submicron/nanosize ceramic powders from a polymeric foam comprising metal cations homogeneously incorporated within a foam cell structure of the...
5238619 Method of forming a porous carbonaceous preform from a water-based slurry  
A method for forming a porous carbonaceous preform includes forming a mixture comprised of up to about 50 volume percent of furfuryl alcohol or tetrahydrofurfuryl alcohol, about 1 to 10 volume...
5229337 Composition of matter for use in a process of forming a porous refractory mass  
A composition of matter which is a powder mixture for use in a process of forming a porous refractory mass on a surface, the composition including refractory particles, fuel particles which are...
5229046 Process for producing thermal shock-resistant silicon nitride sintered material  
There is provided a thermal shock-resistant silicon nitride sintered material including silicon nitride and rare earth element compounds, which material contains at least 10 pore groups per mm 2 ,...
5227342 Process of making porous ceramic materials with controlled porosity  
A method of making metal oxide ceramic material is disclosed by which the porosity of the resulting material can be selectively controlled by manipulating the sol used to make the material. The...
5219829 Process and apparatus for the preparation of pulverulent metal oxides for ceramic compositions  
The invention relates to a process and an apparatus for converting metal nitrate or mixed metal nitrate solutions into the corresponding metal oxides in a microwave field. The invention consists in...
5217930 Binodal metallic carbide and its use as a catalyst  
A porous refractory carbide with a large specific surface area is disclosed. The refractory carbide has a skeleton of metallic or metalloid refractory carbide and has a bimodal open porosity with a...
Matches 151 - 200 out of 496 < 1 2 3 4 5 6 7 8 9 10 >