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| Number | Title | Issue Date |
| 7353687 | Reference leak A reference leak includes a leak layer formed of one of a metallic material, a glass material, and a ceramic material. The metallic material is selected from the group consisting of copper, nickel, and molybdenum. The leak layer comprises a number of substantially p... | 04/08/2008 |
| 7316721 | Ceramic foam insulator with thermal expansion joint A canister for maintaining entrained particles in a gas stream passing there through. The canister has an outer annular member and an inner porous annular member. The inner porous annular member has rings with at least one expansion zone in each ring. An annular int... | 01/08/2008 |
| 7314593 | Process for preparing improved silicon carbide powder Improved silicon carbide powder is prepared by carbothermal reduction of silica by introducing β-SiC powder simultaneously with iron in the starting composition resulting into a precursor powder which after complete reduction contains at least 90% SiC preferably ri... | 01/01/2008 |
| 7287975 | Resin mold material and resin mold A resin mold material includes one-dimensional communicating holes extending substantially linearly from a mold surface and having diameters from 1 nm to less than 10 μm; a surface layer including the mold surface and the one-dimensional communicating holes; a supp... | 10/30/2007 |
| 7053016 | Ceramic porous body and method of manufacturing glass usable as binder therefor A ceramic porous body is provided which uses a binder made of a glass that has excellent acid resistance and alkali resistance and which can be used for a long period of time as a filtration filter. The ceramic porous body is formed from ceramic particles that are b... | 05/30/2006 |
| 7005200 | Method for manufacturing articles for high temperature use, and articles made therewith A method for manufacturing an article for use in a high-temperature environment, and an article for use in such an environment, are presented. The method comprises providing a substrate; selecting a desired vertical crack density for a protective coating to be depos... | 02/28/2006 |
| 6833337 | Method for fabricating shaped monolithic ceramics and ceramic composites through displacive compensation of porosity, and ceramics and composites made thereby The present invention is a method for fabricating shaped monolithic ceramics and ceramic composites, and the ceramics and composites made thereby. The method of the present invention includes three basic steps: (1) Synthesis or other acquisition of a porous preform ... | 12/21/2004 |
| 6818579 | Granular ceramic material with high porosity A ceramic material, includes SiO2 and Na2O and/or K2O. The material is characterized by a porosity of over 60% and by pores, more than 70% of which have a pore size ranging between 0.1 and 15 μm. The ceramic material can be used as ... | 11/16/2004 |
| 6811602 | Process for preparing silicate porous product A process for preparing a silicate porous product, which comprises a step of forming a clay mineral into a dispersion by means of a dispersant, a step of removing gases dissolved in the dispersion, a step of freezing the dispersion and drying it in its frozen state ... | 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 |
| 6664205 | Porous, sound-absorbing ceramic moldings and method for production thereof The present invention is a porous sound-absorbing ceramic form made of a porous ceramic material with communicating pores and having a bulk specific gravity of 0.5 to 1.0. The porous ceramic material consists essentially of 100 parts by weight of perlite ... | 12/16/2003 |
| 6620458 | Method to produce alumina aerogels having porosities greater than 80 percent A two-step method for producing monolithic alumina aerogels having porosities of greater than 80 percent. Very strong, very low density alumina aerogel monoliths are prepared using the two-step sol-gel process. The method of preparing pure alumina aerogel... | 09/16/2003 |
| 6620749 | Light-weight black ceramic insulation Ultra-high temperature, light-weight, black ceramic insulation having a density ranging from about 0.12 g/cc. to 0.6 g/cc. such as ceramic tile is obtained by pyrolyzing siloxane gels derived from the reaction of at least one organo dialkoxy silane and at... | 09/16/2003 |
| 6602449 | Method of producing ceramic foams A method of producing ceramic foam wherein a precursor including an AlCl3 (Pri2 O) complex is decomposed to form a mixture of a polymerizing species and liquid isopropyl chloride and the mixture is foamed. The foamed mixtu... | 08/05/2003 |
| 6541108 | Process for the preparation, preferably from waste materials, of silicate foam with closed pores, and the product produced by the process The process of the invention characterized in that to 100 parts by weight of a silicate powder having 2000-8000 m2 /g specific surface, 1-10 parts by weight of gas-forming material with particle size of 10-100 μm and 0.5-15 parts by weight of ... | 04/01/2003 |
| 6399528 | Porous aluminum oxide structures and processes for their production The present invention relates to a porous aluminum oxide structure comprising Al2 O3 and Zr, the structure having an open porosity greater than about 30% and an average pore size from about 20 nm to about 1000 nm, wherein the Zr, exp... | 06/04/2002 |
| 6339034 | Light-weight ceramic insulation Ultra-high temperature, light-weight, ceramic insulation such as ceramic tile is obtained by pyrolyzing a siloxane gel derived from the reaction of at least one organo dialkoxy silane and at least one tetralkoxy silane in an acid or base liquid medium. Th... | 01/15/2002 |
| 6331496 | High performance ceramic matrix composite The composite includes inorganic fiber for reinforcement and a matrix of 40 to 95% by weight of silicon carbide ceramic and 5 to 60% by weight of an oxide phase dispersed in the silicon carbide ceramic. The oxide phase forms a continuous network structure... | 12/18/2001 |
| 6284688 | Refractory compositions Substantially dry, self-hardening, thermally activated refractory compositions, suitable for use to produce linings for furnaces or metallurgical vessels such as ladles, tundishes or launders, comprise particulate refractory material, an inorganic binder ... | 09/04/2001 |
| 6251819 | Silicon carbide foam with high specific surface area and improved mechanical properties Silicon carbide foam useful as a catalyst support has a BET specific surface area of at least 5 m2 /g, and a compression strength exceeding 0.2 MPa. The foam is prepared by impreganting an organic foam with a suspension of silicon in a resin co... | 06/26/2001 |
| 5962352 | Method for fabricating porous composite oxide A method for fabricating a porous composite oxide is provided. The method includes the steps of: (a) slowly mixing a solution including a silicon oxide source and a solution including an aluminum oxide source; (b) adding hydrochloric acid to the mixed sol... | 10/05/1999 |
| 5958831 | SiC foam catalyst carrier with a reinforced skin and corresponding catalytic systems SiC foam-based catalyst carrier in the form of a moulded part having walls reinforced with a SiC skin having mechanical characteristics higher than those of the foam, this skin allowing the carrier to be handled and used without damage.... | 09/28/1999 |
| 5958363 | Method for making monolithic metal oxide aerogels Transparent, monolithic metal oxide aerogels of varying densities are produced using a method in which a metal alkoxide solution and a catalyst solution are prepared separately and reacted. The resulting hydrolyzed-condensed colloidal solution is gelled, ... | 09/28/1999 |
| 5849055 | Process for producing inorganic microspheres A process for producing inorganic microspheres (solid spheres or hollow spheres), which comprises pulverizing a material by wet pulverization to an average particle size of at most 5 μm to obtain a slurry of a pulverized powder material, spraying the slu... | 12/15/1998 |
| 5833728 | Method for the preparation of vitreous hollow microspheres Provided is a method for the efficient preparation of fine hollow spherical glassy bodies having a high strength and excellent whiteness from a volcanic vitreous deposit as the starting material. The fine hollow spherical glassy bodies as desired can be p... | 11/10/1998 |
| 5827457 | Method for manufacturing a lightweight ceramic foamed substance A method for manufacturing a lightweight foamed ceramic body from components comprising: (a) at least one expandable volcanic mineral; (b) at least one alkaline earth metal oxide, hydroxide, or carbonate, (c) at least one inorganic binder and (d) a foamin... | 10/27/1998 |
| 5772735 | Supported inorganic membranes Supported inorganic membranes capable of molecular sieving, and methods for their production, are provided. The subject membranes exhibit high flux and high selectivity. The subject membranes are substantially defect free and less than about 100 nm thick.... | 06/30/1998 |
| 5759932 | Coating composition for metal-based substrates, and related processes An improved thermal barrier coating for metal substrates such as superalloys is provided. The coating is a slurry composition, comprising spheres of zirconia, at least some of which are hollow, contained within a porous oxide matrix, such as aluminosilica... | 06/02/1998 |
| 5705448 | Production of porous articles A gas generating substance is added to an aqueous dispersion containing refractory particles and a polymerizable monomer and the pressure and/or temperature are adjusted so that the substance generates the gas before the polymerization gets underway; to c... | 01/06/1998 |
| 5674792 | Shaped body having a high silicon dioxide content and a process for producing such shaped bodies A shaped body of amorphous silicon dioxide, which has a chemical purity of at least 99.9% and a cristobalite content of at most 1% and which is impermeable to gas, is known. To provide shaped bodies of amorphous silicon dioxide which have a high precision... | 10/07/1997 |
| 5614255 | Method for the preparation of vitreous hollow microspheres Proposed is an efficient method for the preparation of vitreous hollow microspheres from particles of a vitreous volcanic deposit by a heat treatment to effect expansion of the particles by foaming. The inventive method comprises a step, prior to the heat... | 03/25/1997 |
| 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 the dispersion, removing the liquid carrier to provide a sol... | 10/08/1996 |
| 5503931 | Moisture absorbing material and methods of production An improved moisture absorbing amorphous silicate material formed by the steps of: parboiling rice under 22 psi and at a temperature above 212 degrees F. to force bran into the rice grain and dissolve cellulose from the rice hulls creating voids in the ri... | 04/02/1996 |
| 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, reticulated precursor metal, i.e. a metal foam. The precursor metal ... | 08/15/1995 |
| 5395805 | Method for making monolithic metal oxide aerogels Transparent, monolithic metal oxide aerogels of varying densities are produced using a method in which a metal alkoxide solution and a catalyst solution are prepared separately and reacted. The resulting hydrolyzed-condensed colloidal solution is gelled, ... | 03/07/1995 |
| 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 high strengths and thus can be easily handled and, if desire... | 10/25/1994 |
| 5340514 | Method for preparing pottery products containing shirasu balloons The present invention relates to a process of using shirasu balloon powder as a material to manufacture pottery products where; white pottery products of light weight, highly white coloring, uniformly distributed density and satisfactory strength can be obtain... | 08/23/1994 |
| 5336645 | Soluble, cellulated mold and foamable mixture A soluble thermally cellulated, ceramic mold member, having gas evolved cells dispersed in a soluble crystalline matrix, the matrix consisting predominantly of at least one crystal phase selected from the group consisting of borates and phosphates of alka... | 08/09/1994 |
| 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 di-polyhydric alcohol or a polyoxyalkylene glycol and (d) a su... | 09/07/1993 |
| 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 mm2, each pore group consisting of pores of 10 or less... | 07/20/1993 |
