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| Number | Title | Issue Date |
| 7993451 | Cement stabilization of soils using a proportional cement slurry A novel cement slurry composed of cement and water that can be used in cement stabilization applications. The cement slurry compound itself is chemically treated, by means of a cellulosic or other thixotropic thickening agent(s) to create a thixotropic system wherei... | 08/09/2011 |
| 7462236 | Gluconate broth for cement and concrete admixture Methods and compositions of the invention involve the use of crude intermediate fermentation broth, derived from industrial glucose fermentation processes prior to completion of purification steps, as additives and admixtures for cementitious compositions. ... | 12/09/2008 |
| 7435293 | Cement compositions comprising maltodextrin Cement compositions, and more particularly, cement compositions that include maltodextrin. An example is a cement composition that includes: a hydraulic cement, water, and an additive comprising maltodextrin. Another example is a cement composition that includes: a ... | 10/14/2008 |
| 7399355 | Fluid loss control additive and cement compositions comprising same A fluid loss control additive comprising a crosslinked polymer and sugar and cement compositions comprising the same. In one embodiment, the fluid loss control additive comprises a polymer and a sugar connected by a pH-sensitive crosslink. In some embodiments, the p... | 07/15/2008 |
| 7393407 | Silicon oxide slurry and method for producing such slurry The present invention relates to a slurry containing water, amorphous silica panicles having a particle size less than 1 micron and silica flour with a particle size between 2-200 microns. In order to stablize the slurry, the slurry contains a polysaccharide. The in... | 07/01/2008 |
| 7371279 | Cellulose ether composition A composition comprising cellulose ether, a superplasticizer and defoamer suitable for use as an additive in extruding inorganic compositions is disclosed. The inventive composition functions as a water retention agent, plasticizer and lubricant in the extrusion of ... | 05/13/2008 |
| 7303625 | Treatment fluids comprising chlorinated carbohydrates Treatment fluid compositions, and more particularly, treatment fluid compositions that include chlorinated carbohydrates. An example is a treatment fluid that includes: a hydraulic cement; water; and a chlorinated carbohydrate. Another example of a treatment fluid i... | 12/04/2007 |
| 7255731 | Use of particular polysaccharides as admixtures for mineral materials The subject of the present invention is the use of particular polysaccharides as admixtures for mineral materials, especially as admixtures for mineral binders. These polysaccharides have, characteristically: a weight-average molec... | 08/14/2007 |
| 7244840 | Admixture, extrudable hydraulic composition and method for the selection of admixture A nonionic water-soluble cellulose ether is characterized in that when 3 pbw of the nonionic water-soluble cellulose ether is added to a mixture of 90 pbw of cordierite, 10 pbw of ordinary Portland cement, and 33 pbw of water, immediately followed by kneading at 20Â... | 07/17/2007 |
| 7151173 | Admixture, extrudable hydraulic composition and method for the selection of admixture A nonionic water-soluble cellulose ether is characterized in that when 3 pbw of the nonionic water-soluble cellulose ether is added to a mixture of 90 pbw of cordierite, 10 pbw of ordinary Portland cement, and 33 pbw of water, immediately followed by kneading at 20Â... | 12/19/2006 |
| 7067000 | Methods of cementing using a fluid loss control additive A method of cementing, comprising displacing a cement composition into a workspace, wherein the cement composition comprises cement, water, and a fluid loss control additive comprising a polymer and a sugar connected by a pH-sensitive crosslink, and allowing the cem... | 06/27/2006 |
| 7067003 | Use of dunder in concrete compositions A cementitious mixture for concrete including an admixture including dunder having a solids content in a range of from 5% to substantially 100% by weight, the dunder being added to the cement in a range of from 0.1% to 5% by weight of cement in a concentration which... | 06/27/2006 |
| 7044224 | Permeable cement and methods of fracturing utilizing permeable cement in subterranean well bores The present invention relates to methods of stimulating a subterranean formation. More particularly, but not by way of limitation, the present invention relates to methods of fracturing subterranean formations utilizing a fracturing fluid comprising a permeable ceme... | 05/16/2006 |
| 7032663 | Permeable cement and sand control methods utilizing permeable cement in subterranean well bores This invention relates to improved methods for completing wells in unconsolidated subterranean zones. More specifically, the present invention relates to cement compositions useful in subterranean applications, and more particularly, to permeable cement compositions... | 04/25/2006 |
| 7004256 | Set retarder compositions, cement compositions, and associated methods Cement compositions, that comprise water, a cement, a strength-retrogression additive, and an acid, wherein the acid comprises ethylenediamine tetra acetic acid, nitrilotriacetic acid, or a combination thereof, are provided. Methods of cementing in a subterranean fo... | 02/28/2006 |
| 6978835 | Methods of cementing in subterranean formations A method of retarding the set time of a cement composition comprising providing a cement composition that comprises water and a cement, and retarding the set time of the cement composition by including a copolymer retarder in the cement composition, wherein the copo... | 12/27/2005 |
| 6893497 | Use of water-soluble polysaccharide derivatives as dispersing agents for mineral binder suspensions The invention concerns the use of water-soluble polysaccharide derivatives as dispersing agents for mineral binder suspensions. A partially hydrolyzed cellulose containing carboxyl groups and optionally hydroxyalkyl and/or sulfate groups and/or a partially hydrolyze... | 05/17/2005 |
| 6872246 | Fiber cement composite materials using cellulose fibers loaded with inorganic and/or organic substances This invention discloses a new technology related to cellulose fiber reinforced cement composite materials using the loaded cellulose fibers. This invention discloses four aspects of the technology: fiber treatment, formulation, method and final product. This techno... | 03/29/2005 |
| 6849117 | Cement composition, its use for the production of a self-leveling liquid casting, and a casting thus obtained A cement composition for liquid casting, based on a binder comprising Portland cement and additives comprising at least a fluidizer and a combination of a thickening agent acting by steric exclusion and a gelling thickening agent. The composition can also include a ... | 02/01/2005 |
| 6811604 | Additives for mineral binders, based on a product of internal dehydration of a hydrogenated sugar, mineral binders with additives and method of preparing same The subject matter of the invention is a new additive for mineral binders comprising a composition containing at least one product of internal dehydration of a hydrogenated sugar which can especially be a dehydrated hexitol such as isosorbide, isomannide, sorbitan o... | 11/02/2004 |
| 6800129 | High solids pumpable cement additives Exemplary liquid cement additive compositions have high solids loading which includes alkali or alkaline earth metal salts and other cement additive components. The liquid carrier is preferably aqueous in nature, although non-aqueous carriers are possible, and the c... | 10/05/2004 |
| 6797050 | Use of fermentation residues as flow-enhancing agents in cementitious materials Herein is disclosed an admixture, for concrete, gypsum panels, and other cementitious products, derived from fermentation still bottoms. The admixture typically comprises protein, glycerol, and lactate, as well as smaller amounts of other alcohols, sugars, and other... | 09/28/2004 |
| 6676744 | Fiber cement composite materials using cellulose fibers loaded with inorganic and/or organic substances This invention discloses a new technology related to cellulose fiber reinforced cement composite materials using the loaded cellulose fibers. This invention discloses four aspects of the technology: fiber treatment, formulation, method and final product. ... | 01/13/2004 |
| 6648964 | Admixtures for mineral binders based on hydrogenated disaccharide, admixture-containing mineral binders, and a process for the preparation thereof A novel admixture for mineral binders is composed of a polyol composition with a high hydrogenated disaccharide content (ࣙ40%). The hydrogenated disaccharide is advantageously chosen from maltitol, lactitol and mixtures thereof. Within the admixture, th... | 11/18/2003 |
| 6641661 | High early strength cement and additives and methods for making the same A method for improving early strength of cements, comprising introducing into a cement during the grinding thereof (a) at least one water reducer comprising a polyoxyalkylene polymer; (b) a sugar; (c) an alkali or alkaline earth metal chloride; and (d) an... | 11/04/2003 |
| 6527849 | Self-repairing, reinforced matrix materials Self-repairing, fiber reinforced matrix materials include a matrix material including inorganic as well as organic matrices. Disposed within the matrix are hollow fibers having a selectively releasable modifying agent contained therein. The hollow fibers ... | 03/04/2003 |
| 6406536 | Organic additives for the preparation of cementitious compositions with improved constancy of color Described herein is the use of a combination of organic additives that is particularly advantageous for the preparation of cementitious compositions having a high conservation of the degree of white, which contain in mass a photocatalyst that is able to o... | 06/18/2002 |
| 6395205 | Method of manufacturing an aerated autoclaved concrete material A method for manufacturing an aerated autoclaved concrete material. A quick-stiffening mixture is prepared by combining a silica containing material, quicklime, a rising agent, gypsum, cement and water. The mixture is deposited into a mold and is allowed ... | 05/28/2002 |
| 6383284 | Masonry render A dry masonry render mixture comprising, in concentrations which can be varied to achieve different finishes, Portland cement, river sand, graded stones, plasterers lime, the ingredients being mixed in the presence of lightweight filaments and silica-base... | 05/07/2002 |
| 6384141 | Anti-shrinkage agent for hydraulic material The present invention is related to a shrinkage reducing agent for hydraulic materials which comprises at least one polymer selected from the group consisting of (a) a polymer having a structure derived from the residue of a compound containing 2 to 30 ca... | 05/07/2002 |
| 6261360 | Self-repairing, reinforced matrix materials Self-repairing, fiber reinforced matrix materials include a matrix material including inorganic as well as organic matrices. Disposed within the matrix are hollow fibers having a selectively releasable modifying agent contained therein. The hollow fibers ... | 07/17/2001 |
| 6221152 | Stable suspension of hydrocolloids The present invention comprises a stable hydrocolloid welan gum in which a hydrocolloid, preferably welan gum, is uniformly dispersed in a superplasticizer such as sulfonated naphthalene, sulfonated melamine, modified lignosulfate, their derivatives and m... | 04/24/2001 |
| 6110271 | Methods for improved rheological control in cementitious systems In accordance with the present invention, a microbial polysaccharide having the features characteristic of S-657 has been found to be effective to improve the rheological properties of a variety of cementitious systems. Thus, the addition of a small, but ... | 08/29/2000 |
| 6068697 | Polysaccharide derivatives and hydraulic compositions A polysaccharide derivative prepared by replacing all or part of the hydroxyl hydrogen atoms of a polysaccharide or polysaccharide derivative by (A) a hydrophobic substituent having a C8 -C43 hydrocarbon chain as the partial structur... | 05/30/2000 |
| 6033469 | Injection preparation suspension free of sodium bentonite Injection medium in the form of a dry mixture for preparing an injection suspension for sealing and/or reducing the penetrability of soils (loose rocks) and/or stone and/or structures against penetration by fluids, especially by water and gases, containin... | 03/07/2000 |
| 5997633 | Composition for and method of pumping concrete A composition for and a method of promoting the flow of a concrete slurry through a pump and a conduit is provided. The composition is a dry particulate mixture comprised of a water soluble, inorganic material and a solvatable, organic polymer. The compos... | 12/07/1999 |
| 5989334 | Self-repairing, reinforced matrix materials Self-repairing, fiber reinforced matrix materials include a matrix material including inorganic as well as organic matrices. Disposed within the matrix are hollow fibers having a selectively releasable modifying agent contained therein. The hollow fibers ... | 11/23/1999 |
| 5951752 | Method of using a coloring composition in a concrete based composition An aqueous composition for coloring cement based compositions comprising water, pigment, a suspension enhancing agent and latex polymer solids.... | 09/14/1999 |
| 5880182 | Water-reducing admixtures for cementitious compositions An admixture for decreasing the water demand of cementitious compositions such as concrete consists of (a) from 75-25% by weight of a water-reducing agent whose major component is a polycarboxylate; and (b) from 25-75% by weight of at least one saccharide comp... | 03/09/1999 |
| 5858083 | Cementitious gypsum-containing binders and compositions and materials made therefrom Cementitious binders include calcium sulfate beta-hemihydrate, a cement component comprising Portland cement, and either silica fume or rice-husk ash. The silica fume or rice-husk ash component is at least about 92 wt % amorphous silica and has an alumina... | 01/12/1999 |
