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| Number | Title | Issue Date |
| 8105433 | Cement admixture, and cement composition and concrete containing the cement admixture It is an object of the invention to provide a cement admixture that can form concrete having a sufficient self-healing capability and satisfactorily maintaining its self-healing capability for prolonged periods. The cement admixture of the invention contains an expa... | 01/31/2012 |
| RE42511 | Bonded aggregate composition and binders for the same Bonded aggregate compositions such as concrete, concrete repair products, high temperature refractories, high temperature insulation and fire resistant insulation are made from an aqueous solution of phosphoric acid and a separate, storable dry mixture of suitable a... | 07/05/2011 |
| 7699928 | Sprayable and pumpable phosphate cement A sprayable and pourable cement composition is provided. The cement composition comprises about 30 to 40 percent by weight calcium silicate, about 20 to 35 percent by weight magnesium oxide and about 25 to 45 percent by weight monopotassium phosphate. ... | 04/20/2010 |
| 7628851 | Bone cement compositions having fiber-reinforcement and/or increased flowability The present invention relates in general to implantable compositions, and method for preparing same, containing a calcium salt-containing component, optionally demineralized bone, a plurality of discrete fibers, optionally a flow additive, and optionally continuous ... | 12/08/2009 |
| 7531034 | Metal-phosphate binders A metal-phosphate binder is provided. The binder may include an aqueous phosphoric acid solution, a metal-cation donor including a metal other than aluminum, an aluminum-cation donor, and a non-carbohydrate electron donor. ... | 05/12/2009 |
| 7473312 | Calcium phosphate bone cements In a first aspect, the present invention discloses a self setting calcium phosphate cement comprising:—(i) a powdered component, said powdered component having an average particle size d50 of less than 15 μm, and (ii) a calcium phosphate based powder, ... | 01/06/2009 |
| 7442246 | Phosphate-based dental investing material In order to produce a dental cast product having the flat surface, by blending a dispersant with a phosphate-based investing material to improve the dispersability of an aggregate powder and a binder powder so as to prevent a agglomeration of the aggregate powder an... | 10/28/2008 |
| 7438755 | Chemically bonded phosphate ceramic sealant formulations for oil field applications A sealant for an oil or geothermal well capable of setting within about 3 to about 6 hours at temperatures less than about 250° F. for shallow wells less than about 10,000 feet and deep wells greater than about 10,000 feet having MgO present in the range of from ab... | 10/21/2008 |
| 7431763 | Magnesium ammonium phosphate cement composition This invention relates to a cement, which comprises in its main phase of microcrystalline magnesium ammonium phosphate and nanoapatite after hardening and thus at the same time has considerable strength. The material is biologically degradable and is suitable for ap... | 10/07/2008 |
| 7416602 | Calcium phosphate cement The invention is related to a rapid setting calcium phosphate cement comprising a powdered first component comprising stabilized dicalcium phosphate dihydrous containing from about 10 ppm to about 60 ppm of magnesium, a powdered second component comprising a calcium... | 08/26/2008 |
| 7402542 | Construction material A structural material of a polystyrene base and the reaction product of the polystyrene base and a solid phosphate ceramic is applied as a slurry which includes one or more of a metal oxide or a metal hydroxide with a source of phosphate to produce a phosphate ceram... | 07/22/2008 |
| 7393405 | Hydraulic cement based on calcium phosphate for surgical use A hydraulic cement is based on calcium phosphate for surgical use, and includes three components. The first component includes α-tricalcium phosphate powder particles. The second, component includes calcium sulphate dehydrate. The third component includes water. Fu... | 07/01/2008 |
| 7353876 | Self-degrading cement compositions and methods of using self-degrading cement compositions in subterranean formations Methods of stimulating subterranean formations are provided. More particularly, methods of fracturing subterranean formations using a fracturing fluid comprising a self-degrading cement composition are provided. An example of a method is a method of treating a subte... | 04/08/2008 |
| 7351280 | Macroporous, resorbable and injectible calcium phosphate-based cements (MCPC) for bone repair, augmentation, regeneration, and osteoporosis treatment A composition and method for producing interconnective macroporous, resorbable and injectable calcium phosphate-based cements (MICPCs). The composition of the invention sets to poorly crystalline apatitic calcium phosphate after mixing a powder component and an aque... | 04/01/2008 |
| 7347896 | Reactive magnesium oxide cements Novel hydraulic cements are disclosed that include reactive magnesium oxide prepared by low temperature calcination. The cements can be formulated to suit a large number of applications with various setting times, strength and levels of sustainability either by addi... | 03/25/2008 |
| 7312171 | Method of binding structural material A structural material of a polystyrene base and the reaction product of the polystyrene base and a solid phosphate ceramic. The ceramic is applied as a slurry which includes one or more of a metal oxide or a metal hydroxide with a source of phosphate to produce a ph... | 12/25/2007 |
| 7311786 | Passivation of sulfidic iron-containing rock A method for passivating sulfidic iron-containing rock comprising: contacting sulfidic iron-containing rock with a magnesium-containing substance, a manganese-containing substance, and a calcium-containing substance; and adjusting the pH of the system to below about... | 12/25/2007 |
| 7309674 | Refractory composition and process for the repair of a hot refractory wall The present invention relates to refractory composition consisting essentially of 40-90 dry weight % of amorphous silica aggregates, up to 40 dry weight % of alumina based compounds 10-15 dry weight % of clay, 0.2-2.0 dry weight % of a chemical binder and further co... | 12/18/2007 |
| 7294187 | Rapid-hardening calcium phosphate cement compositions A bone or dental implant material in the form of a paste includes a mixture of calcium phosphate and/or calcium-containing powders and a solution that is (1) an acidic calcium phosphate solution saturated with respect to one or more calcium phosphate compounds, (2) ... | 11/13/2007 |
| 7278483 | Methods of using cement compositions comprising phosphate compounds in subterranean formations Methods of using cement compositions comprising phosphate compounds in subterranean formations are provided. An example of a method is a method of cementing in a subterranean formation. Other examples of methods include methods of avoiding the loss of circulation in... | 10/09/2007 |
| 7279038 | Process for affecting the setting and working time of bioresorbable calcium phosphate cements A fast-setting, bioresorbable calcium phosphate cement is prepared by a process which can be carried out with a heat treatment up to 1000° C. on a mixture of a wetting solution and a calcium phosphate powder having a Ca to P molar ratio of 0.5-2.5. The wetting solu... | 10/09/2007 |
| 7273523 | Strontium-apatite-cement-preparations, cements formed therefrom, and uses thereof Calcium-strontium-hydroxyphosphate (strontium-apatite-) cement preparations are described, comprising a powder mixture, which contains molar quantities of the components calcium (Ca), strontium (Sr) and phosphate (P) in the mixture in the ranges 1.00 | 09/25/2007 |
| 7270705 | Method of increasing working time of tetracalcium phosphate cement paste A method for increasing working time/setting time of monolithic tetracalcium phosphate (TTCP) cement paste formed by mixing a TTCP powder with an aqueous solution, which includes heating the TTCP powder, prior to the mixing, so that the TTCP powder is maintained at ... | 09/18/2007 |
| RE39804 | Inorganic resin compositions, their preparation and use thereof Inorganic resin compositions comprising, in combination, an aqueous solution of metal phosphate, an oxy-boron compound, a wollastonite compound and other optional additives, inorganic composite articles and products reinforced by fillers and fibers including glass f... | 09/04/2007 |
| 7261717 | Methods and devices for delivering orthopedic cements to a target bone site Methods and devices are provided for delivery an orthopedic, e.g., calcium phosphate cement to a target bone site. In practicing the subject methods, a flowable cement composition is delivered to a target bone site in conjunction with vibration. Also provided are th... | 08/28/2007 |
| 7258735 | Process for affecting the setting and working time of bioresorbable calcium phosphate cements A fast-setting, bioresorbable calcium phosphate cement is prepared by a process which can be carried out with a heat treatment up to 1000° C. on a mixture of a wetting solution and a calcium phosphate powder having a Ca to P molar ratio of 0.5-2.5. The wetting solu... | 08/21/2007 |
| 7255738 | Lightweight cementitious composite material A lightweight cementitious composite material includes expanded synthetic polymer particulate having a particle size of between 0.0625 and 0.5 inches. A dispersant coating on said particulate suppresses electrostatic attraction between particulate particles. A matri... | 08/14/2007 |
| 7223414 | Silica-calcium phosphate bioactive composite for improved synthetic graft resorbability and tissue regeneration A resorbable silica-calcium phosphate bioactive composite that finds utility for drug delivery. The bioactive composite is loaded with a pharmaceutical composition and releases a therapeutically effective amount of a pharmaceutical composition for periods of up the ... | 05/29/2007 |
| 7214265 | Injectable calcium phosphate cements and the preparation and use thereof A calcium phosphate cement suitable for use in dental and bone prosthesis is disclosed, which include calcium phosphate particles having a diameter of 0.05 to 100 microns, wherein said calcium phosphate particles on their surfaces have whiskers or fine crystals havi... | 05/08/2007 |
| 7204880 | Rapid setting cement A cement formula including mono potassium phosphate, mono ammonium phosphate, magnesia, and fly ash exhibits rapid setting and high strength characteristics. ... | 04/17/2007 |
| 7201797 | Process for affecting the setting and working time of, bioresorbable calcium phosphate cements A fast-setting, bioresorbable calcium phosphate cement is prepared by a process which can be carried out with a heat treatment up to 1000° C. on a mixture of a wetting solution and a calcium phosphate powder having a Ca to P molar ratio of 0.5–2.5. The wetting so... | 04/10/2007 |
| 7186294 | Process for affecting the setting and working time of bioresorbable calcium phosphate cements A fast-setting, bioresorbable calcium phosphate cement is prepared by a process which can be carried out with a heat treatment up to 1000° C. on a mixture of a wetting solution and a calcium phosphate powder having a Ca to P molar ratio of 0.5–2.5. The wetting so... | 03/06/2007 |
| 7174961 | Methods of cementing using cement compositions comprising basalt fibers Methods of using cement compositions that comprise basalt fibers in subterranean formations are provided. An example of such a method may comprise providing a cement composition that comprises water, a hydraulic cement, and a plurality of basalt fibers; introducing ... | 02/13/2007 |
| 7166160 | Biodegradable cement retarder compositions and methods of cementing in a subterranean formation The present invention is directed to hydraulic cement compositions comprising set-retarding additives and methods of retarding the set of a cement composition utilizing poly(amide) set-retarding additives and methods of cementing in subterranean zones utilizing a ce... | 01/23/2007 |
| 7160381 | Tetracalcium phosphate (TTCP) with surface whiskers and method of making same A tetracalcium phosphate (TTC P) particle for use in preparing a fast-setting, bioresorbable calcium phosphate cement is disclosed. The TTCP particle has a basic calcium phosphate whiskers or fine crystals on a surface thereof; the basic calcium phosphate whiskers o... | 01/09/2007 |
| 7160383 | Composition and application of novel sprayable phosphate cement (grancrete) that bonds to styrofoam A dry mix particulate composition of a calcined oxide of Mg and/or Ca, an acid phosphate, and fly ash or equivalent, wherein the calcined oxide is present in the range of from about 17% to about 40% by weight and the acid phosphate is present in the range of from ab... | 01/09/2007 |
| 7160382 | Calcium phosphate cements made from (TTCP) with surface whiskers and process for preparing same A tetracalcium phosphate (TTCP) particle for use in preparing a fast-setting, bioresorbable calcium phosphate cement is disclosed. The TTCP particle has a basic calcium phosphate whiskers on a surface thereof; the basic calcium phosphate whiskers having a Ca/P molar... | 01/09/2007 |
| 7156915 | Tetracalcium phosphate (TTCP) with surface whiskers and method of making same A tetracalcium phosphate (TTCP) particle for use in preparing a fast-setting, bioresorbable calcium phosphate cement is disclosed. The TTCP particle has a basic calcium phosphate whiskers or fine crystals on a surface thereof; the basic calcium phosphate whiskers of... | 01/02/2007 |
| 7150879 | Neutral self-setting calcium phosphate paste The present invention provides a novel process for producing a calcium phosphate cement or filler which hardens in a temperature dependent fashion in association with an endothermic reaction. In the reaction a limited amount of water is mixed with dry calcium phosph... | 12/19/2006 |
| 7115163 | Magnesium ammonium phosphate cement composition This invention relates to a cement, which comprises in its main phase of microcrystalline magnesium ammonium phosphate and nanoapatite after hardening and thus at the same time has considerable strength. The material is biologically degradable and is suitable for ap... | 10/03/2006 |
