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| Number | Title | Issue Date |
| 6884822 | Sol-gel process utilizing reduced mixing temperatures A method of manufacturing a xerogel monolith having a pore diameter distribution includes preparing a first solution comprising metal alkoxide and preparing a second solution comprising a catalyst. A third solution is prepared by mixing the first solution and the se... | 04/26/2005 |
| 6852300 | Process for preparing silica or silica-based thick vitreous films according to the sol-gel technique and thick films thereby obtained A sol-gel process allowing preparation, on a substrate, of glassy films of silicon oxide or mixed oxides based on silicon oxide, of thickness above 1 micrometer, generally between 2 and 20 micrometers and characterized by absence of defects, that turn out to be part... | 02/08/2005 |
| 6849242 | Porous silica granule, method for producing the same, and method for producing synthetic quartz glass powder using the porous silica granule The granule consists of individual granules approximately spherical in shape, having a pore volume of 0.5 cm3, a mean diameter of pores of 50 nm or less, a specific surface area of 100 m2/g or less, and a bulk density of 0.7 g/cm3 or... | 02/01/2005 |
| 6838068 | Silica gel A method of producing a silica gel by hydrolyzing a silicon alkoxide and subjecting the resulting hydrogel to a hydrothermal treatment substantially without aging it is described. Also described in a silica gel produced by such a method and a silica gel which has th... | 01/04/2005 |
| 6838004 | Nanopore reactive adsorbents for the high-efficiency removal of waste species A nanoporous reactive adsorbent incorporates a relatively small number of relatively larger reactant, e.g., metal, enzyme, etc., particles (10) forming a discontinuous or continuous phase interspersed among and surrounded by a continuous phase of smaller adso... | 01/04/2005 |
| 6806295 | Sol-gel processing with inorganic metal salt precursors Methods for sol-gel processing that generally involve mixing together an inorganic metal salt, water, and a water miscible alcohol or other organic solvent, at room temperature with a macromolecular dispersant material, such as hydroxypropyl cellulose (HPC) added. T... | 10/19/2004 |
| 6802188 | Method of making photosensitive monolithic glass apparatus A partially modified photosensitive monolithic oxide glass apparatus formed through photolithographic imaging. The apparatus may be either a volume apparatus or a layer apparatus. Both types of apparatus may be used to diffuse light in predetermined directions or sh... | 10/12/2004 |
| 6800267 | Doped precipitated silica Aluminum-doped precipitated silicas having a BET surface area of more than 300 m2/g and aluminum distributed uniformly in the silica particles are prepared by sequentially heating a mixture of water and sodium silicate at a temperature of from 70 to 86° ... | 10/05/2004 |
| 6764667 | Method for the formation of aerogel precursor using rapid gelation two-step catalysis A rapid gelation, two-step method for the production of an aerogel precursor is disclosed. The method involves the addition of a small amount of catalyst during mixing of alcogel components in order to allow some pre-polymerization to occur. Next, the addition of th... | 07/20/2004 |
| 6743936 | Composites made using functionalized nanoparticles There are disclosed amphoteric nano-sized metal oxide particles functionalized with silyl esters of a phosphonate and composites thereof with an acrylate-based monomer, including liquid crystal monomers photopolymerizable at ambient temperature. Also disclosed are t... | 06/01/2004 |
| 6730282 | Sol-gel process for the manufacture of nanocomposite photoluminescent materials It is described a process based on sol-gel chemistry suitable to the production of nanocomposite materials being photoluminescent at ambient temperature, comprising silicon grains of dimension of nanometers embedded in a silica matrix. ... | 05/04/2004 |
| 6716408 | Procedure for preparing silica from calcium silicate This invention concerns a procedure for preparing amorphous silica from calcium silicate and CO2, with formation and separation of precipitate CaCO3. ... | 04/06/2004 |
| 6670402 | Rapid aerogel production process Methods of more rapidly producing aerogel products by means of a rapid solvent exchange of solvent inside wet gels with supercritical CO2 by injecting supercritical, rather than liquid, CO2 into an extractor that has been pre-heated ... | 12/30/2003 |
| 6669748 | Dispersion liquid of silica particles for polishing, method of producing the same, and polishing agent The present invention provides a dispersion liquid of silica particles for polishing with a low content of Na ions and also with a content of ions other than Na ions in a prespecified range. This dispersion liquid is a dispersion liquid of silica particle... | 12/30/2003 |
| 6632412 | Bioactive sol-gel derived silica fibers and methods for their preparation This invention relates to bioactive sol-gel derived silica fibers, methods for their preparation, an implantable device comprising the fibers and the use of the device for tissue guiding or bone repair.... | 10/14/2003 |
| 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 |
| 6569358 | Method for incorporating metal nanoparticles in porous materials The method of preparing the porous material incorporating ultrafine metal particles comprises the following steps: (1) preparing surface-protected ultrafine metal particles by reducing metal ions in the presence of molecules such as dodecanethiol molecule... | 05/27/2003 |
| 6562310 | Group IIA containing mesoporous materials Mesoporous materials containing a Group IIA metal are prepared by a sol-gel type techniques.... | 05/13/2003 |
| 6516537 | Method for drying and producing microporous particles In a process for drying microporous, fluid-containing particles, the fluid-containing particles to be dried are fed as a moving bed countercurrently to a drying fluid, the interfacial tension of the fluid being reduced in comparison with the interfacial t... | 02/11/2003 |
| 6508082 | Method for fabricating high-purity silica glass using sol-gel processing Disclosed is a method for fabricating high-purity silica glass using a sol-gel processing that includes the steps of: (a) mixing deionized water with a monomer and a dimer to prepare an aqueous premix solution; (b) mixing the aqueous premix solution with ... | 01/21/2003 |
| 6495257 | Fine particulate silica gel and fine particulate silica gel internally containing microparticles of a metal compound Fine particulate silica gel having the following characteristics (1) to (3): (1) average particle size: from 1 to 200 μm; (2) oil absorption in accordance with JIS K5101: from 100 to 300 ml/100 g; and (3) hygroscopicity represented by moisture adsorption unde... | 12/17/2002 |
| 6492014 | Mesoporous composite gels an aerogels A composite gel or aerogel is formed by commingling a particulate guest (such as a colloidal or dispersed (i.e., non-colloidal) solid or a powder) with a sol which is either about to gel or in which gelation has just started. After addition of the particu... | 12/10/2002 |
| 6486216 | Stable colloidal silica aquasols A stable aquasol containing colloidal silica having a surface area of from about 700 m2 /g to about 1100 m2 /g, and an S-value of from about 20 to about 50; wherein the colloidal silica is not surface treated; wherein the molar ratio... | 11/26/2002 |
| 6475561 | Method of producing silicon tetrachloride-based and organically modified aerogels The present invention refers to a method of producing organically modified aerogels on a basis of silicon tetrachloride in which: a) a hydrogel is obtained by direct reaction of silicon tetrachloride with water, b) the hydrogel obtained in step a) is surf... | 11/05/2002 |
| 6457329 | Process for fabricating sol-gel article involving low-shrinkage formulation A silica sol-gel fabrication process is provided which allows improved control of the shrinkage that takes place during the drying of a gel body. In particular, the invention makes it possible to attain extremely low shrinkage through the completion of th... | 10/01/2002 |
| 6451862 | Process for producing a spherical silica gel A process for producing a spherical silica gel, which comprises supplying a liquid mixture of an alkali silicate solution and an acid solution to a spraying apparatus, spraying the liquid mixture to obtain droplets, bringing the droplets into contact with... | 09/17/2002 |
| 6446467 | Monolithic glass light shaping diffuser and method for its production A holographic light shaping diffuser (LSD) is formed from a monolithic glass material by recording light shaping structures (sometimes collectively known as "speckle", particularly when the structures extend into the interior of the diffuser) in the glass... | 09/10/2002 |
| 6440397 | Abrasive silica compositions and dentifrice compositions prepared therefrom Silica compositions for abrasive systems in dentifrice formulations are disclosed. The silica abrasive system comprises (a) silica gels having a median particle size below 7 microns, a pH of from about 6 to about 11 and powder RDA's of from 100 to about 2... | 08/27/2002 |
| 6438998 | Ultrasonic dispersion apparatus for silica sol Disclosed are apparatus and method for ultrasonically dispersing a silica sol such as is used in a process of manufacturing a silica glass by a sol-gel method. The apparatus includes a sol feeder for holding a sol to be dispersed, a sol container for cont... | 08/27/2002 |
| 6438867 | Method for drying and producing microporous particles and a drying device In a process for drying microporous, fluid-containing particles, the heat required for increasing the temperature is supplied by convection by reducing the interfacial tension of the fluid, preferably to 0 to 1/10, in particular to 0 to 1/20, of the inter... | 08/27/2002 |
| 6419174 | Abrasive compositions and methods for making same Abrasive compositions comprised of water-insoluble abrasive polishing agents suspended in a liquid medium in combination with humectant, and methods for making same. The inventive abrasive compositions are rheologically stable, settling-resistant, and re-... | 07/16/2002 |
| 6403059 | Methods of making dentifrice compositions and products thereof Methods of making dentifrice compositions including, as a raw material ingredient thereof, abrasive compositions comprised of water-insoluble abrasive polishing agents suspended in a liquid medium in combination with humectant, and the unique dentifrice c... | 06/11/2002 |
| 6399677 | Epoxy resin compositions and premolded semiconductor packages In an epoxy resin composition comprising an epoxy resin, a curing agent, and an inorganic filler, the filler is porous silica having a specific surface area of 6-200 m2 /g, a true specific gravity of 2.0-2.2, and a mean particle size of 2-50 μ... | 06/04/2002 |
| 6395807 | Fine spherical silica and liquid sealing resin composition containing same The fine spherical silica having a particle size distribution in which maximum particle diameter is 24 μm, average particle diameter is 1.7 to 7 μm, and the proportion X1 of particles having a particle diameter of 3 μm or less in the total p... | 05/28/2002 |
| 6386002 | Process entailing sol-gel production of silica glass A silica-water dispersion suitable for use as a sol for sol-gel fabrication is produced from a silica-water mixture with addition of alkaline agent. The agent functions to increase viscosity so as to improve dispersing efficiency during shear mixing.... | 05/14/2002 |
| 6386373 | Process for making silica powder and use of such powder in the manufacture of an optical fiber preform A process is described for making silica powder by a sol-gel process whereby an aqueous suspension is made of a silica-based raw material which includes particles containing chlorine, the pH of the suspension is adjusted to a value from 3 to 4.5 if necess... | 05/14/2002 |
| 6380265 | Dispersion of fine porous inorganic oxide particles and processes for preparing same A dispersion comprising fine porous inorganic oxide particles, e.g., silica gel particles, wherein the particles have a median particle size below three microns. The dispersed particles have a porosity after drying in which at least about 0.50 cc/g of por... | 04/30/2002 |
| 6374637 | Process for producing a linearly-miniaturized densified optical article using a mold having an internal volume which is a homothetic copy of the optical article A process for producing a linearly-miniaturized, densified optical product, which entails a) cold filling a mould with a liquid colloidal dispersion formed from a chemical precursor; b) polycondensing the liquid colloidal dispersion to obtain a gel; c) su... | 04/23/2002 |
| 6375914 | Method for treating silica gel A method for stabilizing silica gel wherein after the gel is precipitated it is treated in a solution consisting of a liquid which is preferably water, aluminium sulphate and a compound such as a carbonate, hydroxide or oxide of a divalent metal.... | 04/23/2002 |
| 6375735 | Precipitated silicas, silica gels with and free of deposited carbon from caustic biomass ash solutions and processes Disclosed are amorphous precipitated silicas, silica gels, and amorphous carbons derived from biomass and methods of producing them with and without adhered or deposited amorphous carbons produced by acidifying a caustic silicate solution produced by caus... | 04/23/2002 |
