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| Number | Title | Issue Date |
| 7579299 | Semi-synthetic bleaching earth The invention relates to a process of processing an acid suspension containing at least one solid, wherein (a) the suspension containing at least one solid is mixed with an alkali metal silicate solution, the pH of the mixture being adjusted to a pH of more than 4, ... | 08/25/2009 |
| 7354750 | Methods for separating molecules The present invention provides compositions and methods for the separation of metals or molecules such as polypeptides, nucleic acids, or endotoxins using a metal-modified solid support. The metals or molecules are isolated from a starting material using the modifie... | 04/08/2008 |
| 7304015 | Compositions for separating molecules The present invention provides compositions for the separation of metals or biomolecules such as polypeptides, nucleic acids, or endotoxins using modified solid supports. ... | 12/04/2007 |
| 7304016 | Compositions for separating molecules The present invention provides compositions for the separation of metals or biomolecules such as polypeptides, nucleic acids, or endotoxins using modified solid supports. ... | 12/04/2007 |
| 7285166 | Zeolite-containing cement composition Methods and cement compositions are provided for sealing a subterranean zone penetrated by a wellbore, wherein the cement composition comprises zeolite, cementitious material, and a mixing fluid. ... | 10/23/2007 |
| 7285164 | Fluid loss additives for cement slurries Methods for cementing in a subterranean zone, which use a cement composition that includes zeolite, cementitious material, proportioned fluid loss control additives and a mixing fluid. Cement compositions containing proportioned fluid loss control additives, and met... | 10/23/2007 |
| 7244689 | Method of producing alumina-silica catalyst supports Alumina-silica catalyst supports having substantially high surfaces areas are formed by extrusion, drying and firing of a plasticized batch including an alumina-silica powder component, acid, organic binder and water. The alumina-silica powder component can be forme... | 07/17/2007 |
| 7220704 | Desulfurization and novel compositions for same A composition comprising a promoter and a metal oxide selected from the group consisting of a gallium oxide, an indium oxide, and combinations of any two or more thereof, wherein at least a portion of the promoter is present as a reduced valence promoter and methods... | 05/22/2007 |
| 7150321 | Zeolite-containing settable spotting fluids Methods and compositions for wellbore treating fluids, especially settable spotting fluids, that include zeolite and at least one carrier fluid. ... | 12/19/2006 |
| 7147067 | Zeolite-containing drilling fluids Methods and compositions for wellbore treating fluids, especially drilling fluids, that comprise zeolite and a carrier fluid. ... | 12/12/2006 |
| 7147769 | Desulfurization and novel methods for same A composition comprising a metal oxide and a promoter, wherein at least a portion of the promoter is present as a reduced valence promoter, and methods of preparing such composition are disclosed. The thus-obtained composition is employed in a desulfurization zone t... | 12/12/2006 |
| 7140440 | Fluid loss additives for cement slurries Methods for cementing in a subterranean zone, which use a cement composition that includes zeolite, cementitious material, proportioned fluid loss control additives and a mixing fluid. Cement compositions containing proportioned fluid loss control additives, and met... | 11/28/2006 |
| 7140439 | Zeolite-containing remedial compositions Methods and compositions for wellbore treating fluids, especially remedial compositions such as pills, that include zeolite and at least one carrier fluid. ... | 11/28/2006 |
| 7128884 | Porous silica microsphere scavengers Highly purified, porous silica microspheres contain functional groups which are capable of selectively binding to reaction impurities, such as excess reactant or reaction by-products, which are contained in a reaction medium. The reaction impurities can thereby be e... | 10/31/2006 |
| 7112552 | Compositions for separating molecules The present invention provides compositions for the separation of metals or biomolecules such as polypeptides, nucleic acids, or endotoxins using modified solid supports. ... | 09/26/2006 |
| 7053023 | Method for the production of adsorption agent granules based on acid-activated layer silicates The invention is directed to a method for producing adsorption agent granules on the basis of acid-activated layer silicates, wherein by the acid activation at least 10% of the aluminium oxide present in the starting material is removed, and wherein the filtered mat... | 05/30/2006 |
| 7048053 | Zeolite compositions having enhanced compressive strength Zeolite compositions having enhanced compressive strength and methods therefor are provided. In particular, methods and compositions for wellbore treating fluids, especially settable spotting fluids having enhanced compressive strength are provided. ... | 05/23/2006 |
| 7041623 | Porous silica microsphere scavengers Highly purified, porous silica microspheres contain functional groups which are capable of selectively binding to reaction impurities, such as excess reactant or reaction by-products, which are contained in a reaction medium. The reaction impurities can thereby be e... | 05/09/2006 |
| 6964302 | Zeolite-containing cement composition Methods and cement compositions are provided for sealing a subterranean zone penetrated by a wellbore, wherein the cement composition comprises zeolite, cementitious material, and a mixing fluid. ... | 11/15/2005 |
| 6806227 | Solid materials for removing metals and fabrication method Solid materials have been developed to remove contaminating metals and organic compounds from aqueous media. The contaminants are removed by passing the aqueous phase through the solid materials which can be in molded, granular, or powder form. The solid materials a... | 10/19/2004 |
| 6645908 | Sol-gel derived sorbents Described is a method for producing copolymerized sol-gel derived sorbent particles for the production of copolymerized sol-gel derived sorbent material. The method for producing copolymerized sol-gel derived sorbent particles comprises adding a basic sol... | 11/11/2003 |
| 6547854 | Amine enriched solid sorbents for carbon dioxide capture A new method for making low-cost CO2 sorbents that can be used in large-scale gas-solid processes. The new method entails treating a solid substrate with acid or base and simultaneous or subsequent treatment with a substituted amine salt. The m... | 04/15/2003 |
| 6482324 | Porous silica microsphere scavengers Highly purified, porous silica microspheres contain functional groups which are capable of selectively binding to reaction impurities, such as excess reactant or reaction by-products, which are contained in a reaction medium. The reaction impurities can t... | 11/19/2002 |
| 6436294 | Process for modifying the metal ion sorption capacity of a medium A process for modifying a medium is disclosed that includes treating a medium having a metal ion sorption capacity with a solution that includes: A) an agent capable of forming a complex with metal ions; and B) ions selected from the group consisting of s... | 08/20/2002 |
| 6342191 | Anchored catalyst system and method of making and using thereof This invention relates to a process for producing an enhanced adsorbent particle comprising contacting a non-amorphous, non-ceramic, crystalline, porous, calcined, aluminum oxide particle that was produced by calcining at a particle temperature of from 30... | 01/29/2002 |
| 6338830 | Absorbent and/or catalyst and binder system and method of making and using therefor The invention relates to a method for producing an adsorbent and/or catalyst and binder system comprising I) mixing components comprising (a) a binder comprising a colloidal metal oxide or colloidal metalloid oxide, (b) an oxide adsorbent and/or catalyst ... | 01/15/2002 |
| 6251280 | Imprint-coating synthesis of selective functionalized ordered mesoporous sorbents for separation and sensors The present invention relates generally to mesoporous sorbent materials having high capacity, high selectivity, fast kinetics, and molecular recognition capability. The invention also relates to a process for preparing these mesoporous substrates through ... | 06/26/2001 |
| 6133497 | Catalyst for removing olefins from aromatic compounds or mixtures thereof A catalyst is described on the basis of acid-activated smectitic clay minerals for removing olefins from aromatic compounds or mixtures of aromatic compounds which is characterized in that the acid-activated clay mineral contains at least 5 milli-equivale... | 10/17/2000 |
| 6017508 | Process of modifying the porosity of aluminosilicates and silicas, and mesoporous compositions derived therefrom A process of modifying the porosity of an aluminosilicate or silica whose porosity is not amenable to modification by acid extraction. The process involves contacting said aluminosilicate or silica with an alkali aluminate, and then extracting the alumina... | 01/25/2000 |
| 5985790 | Method of making acid contacted enhanced aluminum oxide adsorbent particle This invention relates to a process for producing an enhanced adsorbent particle comprising contacting a non-amorphous, non-ceramic, crystalline, porous, calcined, aluminum oxide particle that was produced by calcining at a particle temperature of from 40... | 11/16/1999 |
| 5948726 | Adsorbent and/or catalyst and binder system and method of making therefor The invention relates to a method for producing an adsorbent and/or catalyst and binder system comprising I) mixing components comprising (a) a binder comprising a colloidal metal oxide or colloidal metalloid oxide, (b) an oxide adsorbent and/or catalyst ... | 09/07/1999 |
| 5935895 | Heterogeneous catalysts A silica-titania mixed oxide catalyst and its method of manufacture is disclosed. Such catalysts can be used especially to catalyze the epoxidation of olefinically unsaturated compounds with organic hydroperoxides.... | 08/10/1999 |
| 5888402 | Process for the purification of a hydrocarbon stream Process for the purification of a hydrocarbon stream by removing contaminating compounds contained in the hydrocarbon stream by contact with a solid adsorbent material and withdrawing a purified hydrocarbon stream, the improvement of which comprises passi... | 03/30/1999 |
| 5814209 | Method for ecological utilization of acid effluents of fuller's earth Disclosed is a process for the ecological usage of acid effluents. Also disclosed is a sorption agent which is characterized in that an acid effluent, created from the production of fullers earth which contains as main ingredients Fe2+/3+ -, Al... | 09/29/1998 |
| 5780563 | Supported lewis acid catalysts derived from superacids useful for hydrocarbon conversion reactions A supported Lewis acid catalyst system for catalyzing hydrocarbon conversion reactions including cationic polymerization, alkylation, isomerization and cracking reactions is disclosed, wherein the catalyst system comprises an inorganic oxide support havin... | 07/14/1998 |
| 5714429 | Supported heteropolyacid catalyst on a silica support formed by flame hydrolysis This invention relates to a novel catalyst composition comprising a heteropolyacid and a siliceous support which is in the form of extrudates or pellets and to a process for hydrating olefins to the corresponding alcohols in the vapour phase in the presen... | 02/03/1998 |
| 5707516 | Column packings for liquid chromatography Column packings for liquid chromatography comprising porous granules which have hydrophilic surfaces prepared by calcining a crystalline clay mineral having a fibrous structure. Median pore diameter of the porous ceramic granules is in the range of from 0... | 01/13/1998 |
| 5650506 | Modified glass fiber membranes useful for DNA purification by solid phase extraction The present invention relates to modified glass fiber membranes which exhibit sufficient hydrophilicity and sufficient electropositivity to bind DNA from a suspension containing DNA and permit elution of the DNA from the membrane. Generally, the hydrophil... | 07/22/1997 |
| 5625054 | DNA purification by solid phase extraction using fluorinated celite The present invention relates to fluorinated surfaces which exhibit sufficient hydrophilicity and sufficient electropositivity to bind DNA from a suspension containing DNA and permit elution of the DNA from the surface. Generally, the hydrophilic and elec... | 04/29/1997 |
| 5616701 | DNA purification by solid phase extraction using a hydroxide-washed glass fiber membrane The present invention relates to modified glass fiber membranes which exhibit sufficient hydrophilicity and sufficient electropositivity to bind DNA from a suspension containing DNA and permit elution of the DNA from the membrane. Generally, the hydrophil... | 04/01/1997 |
