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| Number | Title | Issue Date |
| 8182604 | Microbial biocementation A method of forming a high strength cement in a permeable starting material, the method comprising the step of combining the starting material with effective amounts of (i) a urease producing micro-organism; (ii) urea; and (iii) calcium ions and wherein the effectiv... | 05/22/2012 |
| 8083849 | Activating compositions in subterranean zones The present disclosure is directed to a system and method for managing cement in a subterranean zone. In some implementations, a method of cementing in a subterranean formation includes positioning a cement slurry including a plurality of activation devices in a wel... | 12/27/2011 |
| 7682445 | Powdered CBC system with improved reaction feature The present invention deals with the initial hydration reaction of highly alkaline chemically bonded ceramic systems such as Ca-aluminate and Ca-silicate, exhibiting a controlled pH development, reduced from very high levels to be in a pH range of 7-9 by the use of ... | 03/23/2010 |
| 7452417 | Downhole servicing compositions having high thermal conductivities and methods of using the same A downhole servicing composition comprising from about 15 percent to about 80 percent by weight of a clay, and from about 10 percent to about 75 percent by weight of a carbon source is disclosed. The invention includes a downhole servicing composition comprising fro... | 11/18/2008 |
| 7353870 | Methods of using settable compositions comprising cement kiln dust and additive(s) The present invention provides settable compositions that comprise water and cement kiln dust. The settable compositions optionally may comprise an additive that comprises at least one of the following group: fly ash; shale; slag cement; zeolite; metakaolin; and com... | 04/08/2008 |
| 7337842 | Methods of using cement compositions comprising high alumina cement and cement kiln dust The present invention provides cement compositions that comprise water, high alumina cement, a soluble phosphate, and cement kiln dust. The cement compositions optionally may be foamed with a gas. Methods of cementing also are provided that comprise: providing the c... | 03/04/2008 |
| 7338923 | Settable drilling fluids comprising cement kiln dust Settable drilling fluids that comprise an aqueous-based drilling fluid and cement kiln dust. Methods of cementing in a subterranean formation that comprise providing a settable drilling fluid comprising an aqueous-based drilling fluid and cement kiln dust, introduci... | 03/04/2008 |
| 7311964 | Inorganic matrix-fabric system and method A method of reinforcing a structural support, includes applying a reinforcement system comprising an AR-glass fibrous layer embedded in an inorganic matrix to the structural support. The AR-glass fibrous layer has a sizing applied thereon, and a resinous coating app... | 12/25/2007 |
| 7284609 | Methods of using settable spotting compositions comprising cement kiln dust Exemplary embodiments include settable spotting compositions that comprise cement kiln dust and associated methods of use. Exemplary embodiments also include methods that comprise providing a settable spotting composition comprising cement kiln dust; introducing the... | 10/23/2007 |
| 7273949 | Salts and methods for their preparation Disulfonate salts of 2,4-pentanedione and methods for making such salts are described. The disulfonate salts are useful as cement dispersants. Cement compositions including such salts, methods for making cement compositions including such salts, and methods for perf... | 09/25/2007 |
| 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 20... | 07/17/2007 |
| 7232483 | Cement composition having chromium reducer Exemplary compositions and methods for reducing hexavalent chromium in cementitious compositions involve the use of a liquid additive composition, comprising stannous chloride. Along with the stannous chloride may be used at least one co-additive comprising an antio... | 06/19/2007 |
| 7213646 | Cementing compositions comprising cement kiln dust, vitrified shale, zeolite, and/or amorphous silica utilizing a packing volume fraction, and associated methods Cementing compositions are provided that comprise water, cement kiln dust, vitrified shale, zeolite, and/or amorphous silica, that utilize a packing volume fraction such that the solid particulate materials of the fluid are in a hindered settling state. Methods of c... | 05/08/2007 |
| 7204310 | Methods of use settable drilling fluids comprising cement kiln dust Settable drilling fluids comprising an aqueous-based drilling fluid and cement kiln dust. Methods of cementing in a subterranean formation comprising: providing a settable drilling fluid comprising an aqueous-based drilling fluid and cement kiln dust, introducing th... | 04/17/2007 |
| 7204307 | Methods of using settable compositions comprising cement kiln dust The present invention provides settable compositions that comprise water and cement kiln dust. The settable compositions optionally may comprise an additive that comprises at least one of the following group: fly ash; shale; slag cement; zeolite; metakaolin; and com... | 04/17/2007 |
| 7199086 | Settable spotting compositions comprising cement kiln dust Provided herein are settable spotting compositions that comprise cement kiln dust and associated methods of use. Also provided are methods that comprise providing a settable spotting composition comprising cement kiln dust; introducing the settable spotting composit... | 04/03/2007 |
| 7174962 | Methods of using lightweight settable compositions comprising cement kiln dust Settable compositions that comprise water, CKD, and microspheres, wherein the lightweight settable composition has a density less than about 13 pounds per gallon. Methods of cementing that comprise providing a lightweight settable composition having a density less t... | 02/13/2007 |
| 7156174 | Contained micro-particles for use in well bore operations The present invention relates to well bore operations, and more particularly, to contained micro-particles, and methods for using such contained micro-particles in cementing operations. An exemplary method of facilitating the use of micro-particles in a well bore fl... | 01/02/2007 |
| 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 20... | 12/19/2006 |
| 7087110 | Liquid additive for intergrinding cement Exemplary compositions and methods for reducing hexavalent chromium in cementitious compositions involve the use of a liquid additive composition, comprising stannous chloride. Along with the stannous chloride may be used at least one co-additive comprising an antio... | 08/08/2006 |
| 7067004 | Grout compositions having high thermal conductivities and methods of using the same Grout slurries are provided that have high thermal conductivities of greater than about 1.4 Btu/hr-ft-° F. and low hydraulic conductivities ranging from about 5×10−9 cm/s to about 1×10−8 cm/s. Such grout slurries comprise water and a grout composition that is... | 06/27/2006 |
| 7064161 | Acrylic copolymer agents based on urethane for improving the workability of hydraulic binders, preparation method, binders containing same and uses thereof The invention relates to the technical field of mortars, concretes, and other compositions based on cement, and in particular to agents capable of modifying their rheological characteristics, in particular workability. Workability may be defined as the property of a... | 06/20/2006 |
| 7047701 | Jointing compound or plaster for construction elements and its method of preparation A jointing compound or plaster for construction elements, particularly paper-faced plasterboards. This plaster includes, in percentages by weight with respect to the total weight of plaster 50 to 85% of a mineral filler; 1 to 20% of an organic binder dispersible in ... | 05/23/2006 |
| 7030184 | Method for improving the mechanical strength of cement matrices, and cement matrices produced thereby The mechanical property known as “strength at young ages” of cement matrices or hydraulic binders may be significantly improved by adding dispersions of mineral fillers and dispersing agents. The dispersing agents of the present invention comprise copolymers pre... | 04/18/2006 |
| 7018466 | Process for producing a concrete and a mortar A concrete admixture or a mortar admixture which is obtained by mixing a silicate with an acid in the presence of water and then solidifying the mixture. It is preferable that the silicate is sodium silicate and the acid is a carboxylic acid. This admixture can impr... | 03/28/2006 |
| 6997984 | Cement admixture A burned product containing 100 parts by weight of C2S, 10 to 100 parts by weight of C2AS, and 20 parts by weight or less of C3A; a cement admixture prepared by grinding the burned product; and a cement containing 100 parts by weight... | 02/14/2006 |
| 6960624 | Method of improving the mechanical strength, particularly the strength “at young ages” of cement matrices, and the cement matrices obtained thereby Cements or hydraulic binders may be prepared by adding an aqueous suspension comprising a ground mineral filler and at least one grinding aid agent to a cement or hydraulic binder. The resulting cement or hydraulic binder has very appreciably improved mechanical pro... | 11/01/2005 |
| 6913645 | Cementitious material A combination of compositions, products and methods of producing a new type of cement. The cementitious material is created by adding sodium carbonate (also known as soda ash, trona, natron, sodium carbonate decahydrate, sodium carbonate anhydrous, etc.) and one or ... | 07/05/2005 |
| 6902797 | Gypsum-based composite materials reinforced by cellulose ethers A gypsum-based composite structure is prepared from a slurry comprising a mixture of calcium sulfate hemihydrate, a cellulose ether additive other than CMC and an amount of water that is sufficient to form a slurry. The calcium sulfate hemihydrate is hydrated by the... | 06/07/2005 |
| 6869475 | Calcium silicate insulating material containing blast furnace slag cement An asbestos free, calcium silicate insulating material, suitable for use in applications where a tough, fire resistant, heat insulating, electrical insulating, and corrosion resistant material is desirable. The calcium silicate insulating material is produced by com... | 03/22/2005 |
| 6863837 | Dispersant composition The present invention provides a sulfonated coal tar distillate salt polymer that is a condensation product of an aldehyde, preferably formaldehyde, and a sulfonated middle fraction obtained during coal tar distillation. The middle fraction includes from about 40% t... | 03/08/2005 |
| 6855440 | Construction material, composition and process for producing the same A construction product made from an extrudable composition formed into various shapes for use in deck-building systems and other applications is disclosed. The extrudable composition prepared from polyethylene polymeric compounds, such as HDPE, and mixed with a mine... | 02/15/2005 |
| 6841232 | Reinforced wallboard A reinforced wallboard core is prepared from a slurry comprising a mixture of β-calcium sulfate hemihydrate, a cellulose ether additive other than CMC and an amount of water that is sufficient to form a slurry and resulting in a wallboard density of less than 0.8 g... | 01/11/2005 |
| 6815399 | Shear-sensitive plugging fluid for plugging and a method for plugging a subterranean formation zone A plugging fluid for plugging a subterranean formation zone surrounding a drill hole consisting of an emulsion comprising an oil phase containing an oil, an emulsifier and 2.4 to 4 kg of cement per liter of oil and an aqueous phase containing water and 12-16 g of po... | 11/09/2004 |
| 6797382 | Thermal interface materials A crosslinkable thermal interface material is produced by combining at least one rubber compound, at least one amine resin and at least one thermally conductive filler. This interface material takes on the form of a liquid or “soft gel”. The gel state is brought... | 09/28/2004 |
| 6752866 | Method for improving the mechanical strength of cement matrices, and cement matrices produced thereby The mechanical property known as “strength at young ages” of cement matrices or hydraulic binders may be significantly improved by adding dispersions of mineral fillers and dispersing agents. The dispersing agents of the present invention comprise copolymers pre... | 06/22/2004 |
| 6743830 | Construction board materials with engineered microstructures The present invention discloses a composition of matter for use in wallboard in the construction that has a morphology of pores and a network of interconnected inorganic particles that are coated with a thin layer of organic binder. The process used to produce the w... | 06/01/2004 |
| 6673434 | Thermal interface materials A crosslinkable thermal interface material is produced by combining at least one rubber compound, at least one amine resin and at least one thermally conductive filler. This interface material takes on the form of a liquid or "soft gel". The gel state is ... | 01/06/2004 |
| 6660799 | Acrylic copolymer agents based on urethane for improving the workability of hydraulic binders, preparation method, binders containing same and uses thereof The invention relates to the technical field of mortars, concretes, and other compositions based on cement, and in particular to agents capable of modifying their rheological characteristics, in particular workability. Workability may be defined as the pr... | 12/09/2003 |
| 6630022 | Mechanical activation of granitic powders A mechanically activated pozzolan prepared from granitic quarry fines. Quarry fines are milled by a high-energy milling process to convert the essentially inert raw granitic fines into a chemically reactive state. When added to a portland cement mortar mi... | 10/07/2003 |
