Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 7972436 | Air management in cementitious mixtures having plasticizer and a clay-activity modifying agent An exemplary surface active agent admixture composition of the invention comprises (1) a first surface active agent comprising a betaine, an alkyl or aryl or alkylaryl sulfonate, or mixture thereof; and (2) a second surface active agent comprising a nonionic oxyalky... | 07/05/2011 |
| 7569108 | Prevention of latex inversion in saltwater cement compositions for use in subterranean formations and associated compositions The prevention of latex inversion in saltwater cement compositions for use in subterranean formations by inclusion of a combination of latex stabilizers and associated methods of cementing. Saltwater cement compositions comprising saltwater, a cement, a latex, a fir... | 08/04/2009 |
| 7442249 | Cement compositions useful in oil and gas wells Cement compositions containing low reactivity materials are disclosed. The compositions are useful in conditions involving high temperatures, high pressures, and tectonic forces such as oil and gas wells. The cement compositions display increased compressive strengt... | 10/28/2008 |
| 7438758 | Cement compositions comprising aromatic sulfonated polymers and methods of using the same A method of servicing a wellbore that penetrates a subterranean formation includes displacing a cement composition comprising an aromatic sulfonated polymer into the wellbore and allowing the cement composition to set. In an embodiment, a transition time of the ceme... | 10/21/2008 |
| 7413014 | Foamed fly ash cement compositions and methods of cementing Methods of cementing and low density foamed cement compositions therefor are disclosed. A low density foamed cement composition of the invention comprises fly ash comprising calcium oxide or calcium hydroxide, water present in an amount sufficient to form a slurry, ... | 08/19/2008 |
| 7363977 | Prevention of latex inversion in saltwater cement compositions for use in subterranean formations and associated methods The prevention of latex inversion in saltwater cement compositions for use in subterranean formations by inclusion of a combination of latex stabilizers and associated methods of cementing. Saltwater cement compositions comprising saltwater, a cement, a latex, a fir... | 04/29/2008 |
| 7357834 | Cement composition for use with a formate-based drilling fluid comprising an alkaline buffering agent A cement slurry comprising a base for reducing the impact of an alkaline solution may be displaced into a wellbore and allowed to set. The base may comprise a metal carbonate that is soluble in water such as potassium carbonate. The cement slurry may further include... | 04/15/2008 |
| 7357833 | Cementitious material reinforced with chemically treated cellulose fiber The present invention relates to a fiber-reinforced cement based or cementitious material, and process for making, where the reinforcing fiber is a chemically treated cellulose or non-cellulose fiber. The fiber reinforced cementitious material includes (i) cement, (... | 04/15/2008 |
| 7344593 | Fiber reinforced cement composite materials using chemically treated fibers with improved dispersibility A fiber-reinforced building material in one embodiment incorporates cellulose fibers that are chemically treated with a dispersant to impart improved dispersibility to the fibers. The fibers are treated with a dispersant which deactivates the hydroxyl sites of the f... | 03/18/2008 |
| 7326478 | Cement binder based plate The invention concerns a plate whereof the body comprises a binder containing Portland cement, a sulphoaluminous clinker and a calcium sulphate source: the binder comprises, by weight 30 to 80% of Portland cement, 20 to 70% of sulphoaluminous binder, 5 to 20% of a c... | 02/05/2008 |
| 7294194 | Emulsion admixtures for improving cement elasticity Methods and cement compositions for sealing a subterranean zone penetrated by a wellbore. The cement compositions include cementitious material, a mixing fluid, at least one polar monomer, and at least one elasticity enhancing monomer. ... | 11/13/2007 |
| 7285165 | Cement compositions comprising set retarder compositions and associated methods Cement compositions are provided that comprise a hydraulic cement, water, and a set retarder composition, the set retarder composition comprising an acrylamide polymer derivative; and an iron compound. In some embodiments, cement compositions are provided that compr... | 10/23/2007 |
| 7273100 | Biodegradable dispersants for cement compositions and methods of cementing in subterranean formations Methods of cementing in a subterranean formation may include the steps of: providing a cement composition comprising a cement, water, and a dispersant comprising a low molecular weight starch that comprises anionic groups; placing the cement composition in the subte... | 09/25/2007 |
| 7267174 | Methods of plugging a permeable zone downhole using a sealant composition comprising a crosslinkable material and a reduced amount of cement A method of servicing a wellbore, comprising preparing a sealant composition comprising a crosslinkable material, a crosslinking agent, a fluid loss control additive, and water, placing the sealant composition in a permeable zone in the wellbore, and allowing the se... | 09/11/2007 |
| 7246665 | Methods of using settable compositions in a subterranean formation The present invention relates to settable compositions that comprise magnesium oxide and at least one divalent salt and associated methods of use. In some embodiments, the present invention discloses methods of a forming a hardened mass comprising providing a settab... | 07/24/2007 |
| 7244303 | 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... | 07/17/2007 |
| 7244338 | Method for producing cellulose fiber having improved biostability and the resulting products A cellulose fiber having extended biostability and the method of its manufacture are described. While prior treatments of cellulose with biotoxic metal compounds have given improved resistance to decay, these treatments have not been entirely satisfactory where the ... | 07/17/2007 |
| 7241338 | Sprayable, strain-hardening cementitious compositions Sprayable fiber reinforced hydraulically setting mortars exhibit strain hardening behavior, and comprise hydraulically setting cement, less than 4 weight percent matrix interactive fibers, a non-Newtonian additive, a superplasticizer, optionally a viscosity control ... | 07/10/2007 |
| 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 |
| 7179348 | Method for producing cellulose fiber having improved biostability and the resulting products A cellulose fiber having extended biostability and the method of its manufacture are described. While prior treatments of cellulose with biotoxic metal compounds have given improved resistance to decay, these treatments have not been entirely satisfactory where the ... | 02/20/2007 |
| 7166159 | 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 ... | 01/23/2007 |
| 7160606 | Method of treating building materials with boron and building materials A method of treating building materials with boron and boron treated building materials. The method involves introducing boron during manufacture of the building materials in the form of a water soluble copper-borate complex. The copper-borate complex enables a wide... | 01/09/2007 |
| 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 |
| 7147706 | Cementitious compositions and methods of making cementitious compositions Cementitious compositions having high compressive strength and high flexibility. An efficient method of making such strong cementitious compositions entails pre-mixing cement additives that can easily be added to a mixture of cement, silica, fibers and water. The ce... | 12/12/2006 |
| 7147708 | Fiber gel mixture for use in cementicious products The present invention relates to a thickened aqueous solution, or gel solution, for use in providing fiber to a cement composition. Additionally, the present invention relates to a method for adding fibers to cement. ... | 12/12/2006 |
| 7128965 | Cementitious product in panel form and manufacturing process The present invention relates to a product, in particular a panel, that can be obtained by the Hatschek process and without autoclaving, and can be used as siding, cladding element or partition element, this product being formed from a fibre-reinforced cementitious ... | 10/31/2006 |
| 7128781 | Cementitious compositions and methods of making cementitious compositions Cementitious compositions having high compressive strength and high flexibility. An efficient method of making such strong cementitious compositions entails pre-mixing cement additives that can easily be added to a mixture of cement, silica, fibers and water. The ce... | 10/31/2006 |
| 7059409 | Methods of cementing and cement compositions containing a polymeric cement cohesion additive A method and cementing composition is provided for sealing a subterranean zone penetrated by a well bore, wherein the cementing composition comprises a mixture of cementitious material, a polymeric cement cohesion additive, and sufficient water to form a slurry. The... | 06/13/2006 |
| 7048793 | Beneficiated water reducing compositions Exemplary compositions comprise at least one aldopentonic acid, such as xylonic acid; and further comprise a lignin, a lignosulfonic acid or its salt, an additional sugar acid such as a aldohexonic acid or salt, a conventional admixture (such as a polyacrylate super... | 05/23/2006 |
| 7041167 | Low density accelerant and strength enhancing additive for cementitious products and methods of using same Disclosed are concrete and fiber cement formulations and products comprising low-density calcium silicate hydrate, and methods for producing these formulations and products. The disclosed formulations exhibit accelerated curing times. Other advantages of the disclos... | 05/09/2006 |
| 7008479 | Methods and cement compositions for cementing in subterranean zones Methods of cementing in subterranean zones, improved cement compositions and improved additives are provided. The compositions are basically comprised of a hydraulic cement, sufficient water to form a slurry and an additive for providing improved rheology, fluid los... | 03/07/2006 |
| 6982000 | Cement compositions including silane treated amorphous silica The present invention provides improved cement compositions comprising hydraulic cement, silica hydrophobicized with a mixture of organosilicon compounds and water. ... | 01/03/2006 |
| 6942726 | Cementitious material reinforced with chemically treated cellulose fiber The present invention relates to a fiber-reinforced cement based or cementitious material, and process for making, where the reinforcing fiber is a chemically treated cellulose or non-cellulose fiber. The fiber reinforced cementitious material includes (i) cement, (... | 09/13/2005 |
| 6926851 | Method, composition and apparatus for controlled concrete A method is provided for use of a concrete composition and an associated apparatus. The method provides for mixing of the concrete material, accelerant powder and, optionally, an associated substance to enable the controlled hardening of the concrete material in a m... | 08/09/2005 |
| 6916369 | Beneficiated water reducing compositions Exemplary compositions comprise at least one aldopentonic acid, such as xylonic acid; and further comprise a lignin, a lignosulfonic acid or its salt, an additional sugar acid such as a aldohexonic acid or salt, a conventional admixture (such as a polyacrylate super... | 07/12/2005 |
| 6899177 | Methods of cementing subterranean zones with cement compositions having enhanced compressive strengths Methods of cementing subterranean zones penetrated by well bores using cement compositions having enhanced compressive strengths are provided. A method of the invention basically comprises the steps of preparing or providing a cement composition having enhanced comp... | 05/31/2005 |
| 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 |
| 6875266 | Concrete formulation An additive for use in the preparation of lightweight concrete, said additive including a blend of from around 40% to 99% of organic polymeric material and from 1% to around 60% of an air entraining agent. The additive is particularly suitable for the preparation of... | 04/05/2005 |
| 6843845 | Admixture and extrudable hydraulic composition An admixture comprising (A) a nonionic water-soluble hydroxyethyl cellulose and/or hydroxyethyl ethyl cellulose having a viscosity of at least 500 mPa·s as measured in a 1 wt % aqueous solution at 20° C., and (B) another nonionic water-soluble cellulose ether havi... | 01/18/2005 |
| 6824605 | Additive for the preparation of ecological permeable concretes with high compression, bending and abrasion resistance, and production process An additive for elaboration of ecological permeable concretes. The additive containing from about 24.5% to 28.2% by weight of a mixture made of dispersing agents, from about 3.3% to 3.8% by weight of a humectant agent, from 0 to about 1% by weight of a nonionic surf... | 11/30/2004 |
