| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 106739000 |
Portland type cement per se (e.g., clinker preparation, etc.)
| 38 |
| 106724000 |
Organic material containing
| 26 |
| 106714000 |
Slag containing (e.g., blast furnace slag, etc.)
| 14 |
| 106716000 |
With mica, talc, cinder, glass, vermiculite, coke breeze or kiln dust
| 8 |
| 106717000 |
Boron, elemental carbon or phosphorus containing
| 7 |
| 106738000 |
Rock, gravel, stone or carbonate containing (e.g., limestone, dolomite, etc.)
| 6 |
| 106718000 |
Soil, diatomaceous earth, clay, slate or shale containing, or material for treating soil or earth (e.g., soil stabilization, etc.) | 5 |
| 20120055376 | PORTLAND LIMESTONE CALCINED CLAY CEMENT - The claimed subject matter relates to a novel cement comprising Portland cement clinker and a supplementary cementitious material. The supplementary cementitious material comprises a heat treated clay material and an optionally heat treated carbonate material, wherein the clay material has been heat treated optionally together with the carbonate material in such a way that the heat treated clay material is substantially dehydroxylated while the optionally heat treated carbonate material remains substantially carbonated. This can be achieved by premixing the carbonate and clay materials before heat treating to 400-700 C, or heat treating the clay material separately to a temperature of up to 900 C. When used in the final application the cement results in much higher strengths than would be predict from any other combination of these materials. | 03-08-2012 |
| 20190144334 | ENHANCING CALCINED CLAY USE WITH INORGANIC BINDERS | 05-16-2019 |
| 20080223259 | Compressive Strength Improvement of Cement and Gypsum Products - The invention relates generally to a cement or gypsum composition having improved properties, which is prepared by incorporating an enzyme into a cement material such as a cement, motar, or concrete, or into a gypsum product. The invention also relates to methods of manufacturing improved cement compositions and gypsum products, methods of improving the compressive strength of cement compositions and gypsum products, and methods of reducing the cost of such compositions by enabling the use of less expensive aggregates in the manufacturing process. More specifically, the invention relates to a cement composition or a gypsum composition, optionally including at least one aggregate and optionally including at least one pozzolan, comprising a cement material or gypsum optionally including aggregate(s) and pozzolan(s) having blended therein an enzyme. | 09-18-2008 |
| 20120186494 | Cement Compositions and Methods Utilizing Nano-Clay - The present invention includes well treatment fluids and methods utilizing nano-particles. An embodiment of a method of the present invention may comprise introducing a treatment fluid comprising nano-clay into a subterranean formation. The treatment fluid may be selected from the group consisting of a cement composition, a drilling fluid, a spacer fluid, and a lost circulation control composition. Another embodiment of the present invention may comprise a method of cementing. The method of cementing may comprise introducing a cement composition comprising a hydraulic cement, nano-clay, and water into a subterranean formation. The method further may comprise allowing the cement composition to set in the subterranean formation. Yet another embodiment of the present invention may comprise a treatment fluid, the treatment fluid comprising nano-clay. The treatment fluid may be selected from the group consisting of a cement composition, a drilling fluid, a spacer fluid, and a lost circulation control composition. | 07-26-2012 |
| 20160168460 | METHOD FOR ENHANCING STRENGTH AND DURABILITY OF WEAK SOILS | 06-16-2016 |
| 106735000 |
Calcium sulfate specified (e.g., gypsum, anhydrite, plaster of Paris, etc.) | 5 |
| 20100170420 | ADDITIVES AND METHODS FOR REDUCING HEXAVALENT CHROMIUM IN CEMENT - A method for reducing hexavalent chromium in cement comprising the addition, to said cement, of antimony (III) compounds as reducing agents. | 07-08-2010 |
| 20110100264 | METHOD FOR PRODUCING HYDRAULIC POWDER - The present invention produces the hydraulic powder through grinding of the hydraulic compound in the presence of a compound (a) prepared by reacting (A) at least one compound selected from polyhydric alcohols and alkylene oxide adducts thereof with (B) a sulfating agent. | 05-05-2011 |
| 20120285350 | SECONDARY SYNTHETIC METHOD FOR CALCIUM SULPHOALUMINATE MINERAL IN PORTLAND CEMENT CLINKER - A method for secondarily synthesizing calcium sulphoaluminate mineral in Portland cement clinker is provided. The method includes adding gypsum into raw Portland cement, calcination, then heating twice to re-form calcium sulphoaluminate mineral that has decomposed at high temperature in the clinker. This method can increase the content of calcium sulphoaluminate mineral in the clinker. As a result, the advantages of the calcium sulphoaluminate mineral in the clinker may be obtained, such as improvement of the early stage performance and long-term performance of the cement clinker and increase in the quantity of mixture in the cement. | 11-15-2012 |
| 20130139731 | CEMENTITIOUS BINDERS AND WOOD PARTICLES-BASED INCOMBUSTIBLE COLOURED COMPOSITE PANEL WITH STRUCTURAL HIGH PERFORMANCE - This invention relates to a composite panel made from wood and cementitious binders, with flat surfaces and several possible colours. The said panel comprises 35 to 85% of grey or white Portland cement; 10 to 30% of debarked resinous wood particles; 5 to 20% of semi-hydrated calcium sulphate; 0 to 10% of a surface accelerator; 0 to 10% of aluminium sulphate solution; 0 to 30% of calcium carbonate; and 0 to 15% of pigments. The invention uses the process of preparation for the existing VIROC panel, adjusting it to the new material. This panel, in addition to being very resistant and showing high performances in terms of resistance to impact, humidity, temperature variation, noise and fungi, as well as other microorganisms, also complies with all the requirements of the associated product standard. | 06-06-2013 |
| 20140366778 | Manufacture of Perfume Stones - Perfumed stones adapted to store perfume so as to release the smell over an extended period, and a method of manufacture of perfumed stones, is disclosed. The stones find particular suitability in perfumed jewelry. | 12-18-2014 |
| 106737000 |
Silica containing (e.g., sand, quartz, etc.) | 5 |
| 20090301355 | Cementitious Composition and Concrete of Such Composition - A cementitious composition comprising an hydraulic cement and one or more aggregates being added to or mixed with the cement and water. The cement contains more than 20 percent of weight micronized aplite. | 12-10-2009 |
| 20110048287 | CEMENT/AGGREGATE COMPOSITION, CONCRETE PRODUCT AND METHOD FOR MAKING A CONCRETE PRODUCT - A concrete product is produced by providing red dune sand having a particle size of 45 microns or less and mixing the red dune sand with hydraulic cement in a ratio of about 30% of the cement being replaced by the red dune sand. The cement and red dune sand are then mixed with fine and course aggregate, water and a superplasticizer and cast after pouring into a mold cavity. Then within 24 hours of casting, the cast article is steam cured for 12 hours under atmospheric pressure, demolded and placed in an auto clave at 100% humidity. The temperature in the auto clave is raised to 180° C. within one to two hours and maintained at that temperature for 4 to 5 hours. The temperature also increases the pressure to about 10 bars. The pressure is released to reach atmospheric pressure within 20-30 minutes and the temperature reduced gradually, so that the article can be removed. | 03-03-2011 |
| 20110094421 | Dry Application Papercrete - A dry papercrete mix is formed by preparing a wet pulp of fiber material such as newsprint and sharp sand by mixing sand, fiber material and water in a batch or continuous mixer, drying the pulp to a moisture content below that which will cause a reaction with Portland cement and adding additional sands and/or pumice and Portland cement. The resulting dry, granular mix can then be handled stored and used in the manner which is conventional for concrete. The dry papercrete mix can also be applied by pouring the dry papercrete mix into a desired volume such as a form in a dry state and injecting water into the dry papercrete mix until the mix is sufficiently wetted. | 04-28-2011 |
| 20120234210 | CEMENT/AGGREGATE COMPOSITION, CONCRETE PRODUCT AND METHOD FOR MAKING A CONCRETE PRODUCT - A concrete product is produced by providing red dune sand having a particle size of 45 microns or less and mixing the red dune sand with hydraulic cement in a ratio of about 30% of the cement being replaced by the red dune sand. The cement and red dune sand are then mixed with fine and course aggregate, water and a superplasticizer and cast after pouring into a mold cavity. Then within 24 hours of casting, the cast article is steam cured for 12 hours under atmospheric pressure, demolded and placed in an auto clave at 100% humidity. The temperature in the auto clave is raised to 180° C. within one to two hours and maintained at that temperature for 4 to 5 hours. The temperature also increases the pressure to about 10 bars. The pressure is released to reach atmospheric pressure within 20-30 minutes and the temperature reduced gradually, so that the article can be removed. | 09-20-2012 |
| 20160046527 | CONCRETE COMPOSITION AND PROCESS - A concrete comprises in relative parts by weight: 100 of Portland cement; 0.25 to 9 of a defoamer; 0.001 to 6 of a surfactant; 0 to 230 of coarse gravel and/or fine gravel and/or shear enhancers; 0 to 85 of sand; 0 to 60 of a particulate pozzolanic or non-pozzolanic material or a mixture thereof having a mean particle size less than 15 micrometers; 0 to 80 of a particulate pozzolanic or non-pozzolanic material or a mixture thereof having a mean particle size between 15 to 88 micrometers; 0.3 to 18 of a water-reducing superplasticizer; 0 to 14 of polyethylene fibers; and 5 to 40 of water. An air mixing process using a tightly sealed mixing tool is used to thoroughly mix the constituents of the concrete before adding the water for curing. By adjusting relative parts in the composition, concretes of high and ultrahigh performance can be achieved efficiently. | 02-18-2016 |
| 106733000 |
Titanium, vanadium, chromium, molybdenum, tungsten, manganese, iron, copper, zinc, tin or lead compound containing (Ti, V, Cr, Mo, W, Mn, Fe, Cu, Zn, Sn, Pb) | 4 |
| 20140137772 | Novel Cement That Is Resistant To Internal Sulfate Reactions And To External Sulfate Attacks - The present invention relates to a novel cement which makes possible the preparation of concrete, grout or mortar which is resistant to internal sulfate reactions and to external sulfate attacks, and also the use of this cement for the preparation of concrete, grout or mortar. | 05-22-2014 |
| 20140238275 | CEMENT COMPOSITION CONTAINING AN ADDITIVE OF A POZZOLAN AND A STRENGTH RETROGRESSION INHIBITOR - A cement composition comprises: cement; water; and an additive, wherein the additive is a pozzolan and a strength-retrogression inhibitor, and wherein a mixture consisting essentially of: the additive; water; and a source of calcium develops a compressive strength of at least 500 psi at a time of 24 hours, a temperature of 190° F., and a pressure of 3,000 psi. A method of cementing in a subterranean formation comprises: introducing the cement composition into the subterranean formation and allowing the cement composition to set. The compressive strength of the test cement composition consisting essentially of: the cement; the water; and the additive at a final time of 72 hours has a percent change greater than −5% from the compressive strength of the test cement composition at an initial time of 24 hours when tested at a temperature of 300° F. and a pressure of 3,000 psi. | 08-28-2014 |
| 20150114267 | CORROSION INHIBITING CEMENTITIOUS COMPOSITIONS - Provided herein is a cementitious composition comprising a photoactivator, wherein the photoactivator is capable of converting NOx to NO | 04-30-2015 |
| 20160046526 | HEAT-ENERGY-ACCUMULATING MATERIAL - The invention relates to a material that can accumulate heat energy at high temperatures without losing its structural capacities. The material is fundamentally concrete formed by a mixture of cement, aggregates and water by means of high-frequency vibration, and comprises a proportion of aggregates which corresponds to between 70% and 85% of the total volume of the dry mixture, where the aggregates are classed as fine aggregates having a diameter of less than 8 mm and coarse aggregates having a diameter of between 8 mm and 25 mm, the granulometry of the dry mixture presenting deviations from the Bolomey curve of less than 5% in the end thirds of the granulometry and less than 10% in the middle third of the granulometry. | 02-18-2016 |
| 106736000 |
Sulfur containing (e.g., alum, etc.) | 3 |
| 20090194005 | CEMENTITIOUS COMPOSITION AND APPARATUS AND METHOD FOR MANUFACTURING THE SAME - A cementitious composition capable of forming high early strength cement when admixed with water may comprise, for each 100% by weight, no more than about 60% by weight C | 08-06-2009 |
| 20110226163 | METHOD FOR MANUFACTURING HEAVYWEIGHT AGGREGATE AND HEAVYWEIGHT CONCRETE - The invention has an object to provide a heavyweight fine aggregate and a heavyweight aggregate for a stiff heavyweight concrete having a slump of 0 to 3 cm, in which segregation from the cement paste is unlikely to occur, and to provide a stiff heavyweight concrete having a slump of 0 to 3 cm, using the heavyweight fine aggregate and heavyweight aggregate. The heavyweight fine aggregate comprises no less than 20 wt % of aggregate having a particle size smaller than 0.15 mm, and no less than 20 wt % of aggregate having a particle size from 2.5 mm to less than 5 mm. The above feature allows effectively inhibiting segregation between the aggregate and cement paste when blending the aggregate into the heavyweight concrete, and allows effectively increasing the filling rate in boxes when blending the aggregate into the heavyweight concrete for box filling. | 09-22-2011 |
| 20120272871 | CONCRETE COMPOSITION - A concrete composition comprising a mouldable mixture of aggregate, binder and liquid vehicle, wherein the aggregate comprises sulphur concrete-derived aggregate and wherein the binder comprises hydraulic binder. The use of crushed sulphur concrete as aggregate in cement-based concrete reduces the hardening time of the concrete. | 11-01-2012 |
| 106723000 |
Process involving steam, electrical, magnetic or wave energy, vibration or vacuum or product thereof | 2 |
| 20140174324 | Method and Apparatus for Baking Clinker - To produce cement clinker by baking of raw meal in a kiln, use is conventionally made of a raw meal preheater in which the heat of the flue gas emerging from the kiln is transferred to the raw meal. In order to remove impurities which accumulate in circulation between the kiln and the raw meal preheater, a part of the flue gas is extracted from the kiln, bypassing the raw meal preheater. The heat generated during the baking of cement clinker can be used particularly efficiently if the flue gases extracted and diverted past the raw meal pre-heater are used in a boiler to generate hot steam which can subsequently be expanded in a turbine. | 06-26-2014 |
| 20140261090 | Integration of Molten Carbonate Fuel Cells in Cement Processing - In various aspects, systems and methods are provided for operating molten carbonate fuel cells with processes for cement production. The systems and methods can provide process improvements including increased efficiency, reduction of carbon emissions per ton of product produced, and simplified capture of the carbon emissions as an integrated part of the system. The number of separate processes and the complexity of the overall production system can be reduced while providing flexibility in fuel feed stock and the various chemical, heat, and electrical outputs needed to power the processes. | 09-18-2014 |
| 106734000 |
Halogen containing (F, Cl, Br, I) | 1 |
| 20090277357 | Mineral Binder and Process for Producing Same - The invention relates to a mineral, hydraulic binder for producing concrete or mortars or cement suspensions, based on at least one cement. The cement comprises clinker phases such as, C | 11-12-2009 |
| Entries |
| Document | Title | Date |
|---|
| 20100031854 | FAST-SETTING, FIBROUS, PORTLAND CEMENT-BASED BUILDING MATERIAL - A fast-setting, fibrous, Portland Cement-based building material is made by soaking wood chips in water to provide substantially saturated wood chips, combining the saturated wood chips with a slurry of Portland cement to provide a wood chip/cement slurry, mixing a slurry of monomagnesium phosphate (“MOP”) with the wood chip/cement slurry to provide a quick-setting MOP/wood chip/cement composition, and compressing the quick-setting MOP/wood chip/cement composition to make the fast-setting, fibrous, Portland Cement-based building material. The inventive composition combines the best properties of cement and wood, yet uses recycled materials to make an environmentally-friendly building material. | 02-11-2010 |
| 20100037802 | PROCESS FOR PRODUCING CONCRETE IN HOT WEATHER - A process for manufacturing concrete bodies at elevated temperatures including the steps of providing pre-selected amounts of cement, aggregate and water where the temperature of at least the aggregate and more likely the cement and water are heated to a temperature between about 32° C. and 45° C. The heated amounts of cement, aggregate and water are mixed at an elevated temperature within the aforementioned range and a set retarding, water reducing admixture added. The mixing is continued and the hot mixture including the set retarding, water reducing admixture is cast at an elevated temperature within the same range to provide a concrete body form or structure with improved short and long-term compressive strengths. | 02-18-2010 |
| 20100037803 | Method for Manufacturing Concrete Containing Electric Arc Furnace Dust - A method for manufacturing concrete bodies or forms containing electric arc furnace dust in an amount of up to about 4% at elevated temperatures to provide concrete bodies is disclosed. The concrete bodies have improved compressive strength and slump retention capability. The method for producing the bodies includes the steps of providing pre-selected amounts of electric arc furnace dust, water, cement and aggregate. The electric arc furnace dust is mixed with water and then added to the cement and aggregate and mixed together at a temperature of about 32° C. and 45° C. to form a hot mixture. The hot mixture is added to a mold and cast at an elevated temperature to form a body with improved strength and slump retention characteristics. | 02-18-2010 |
| 20110000402 | System and Method for Handling Recyclable Materials and Products Manufactured Therefrom - A system and method for handling recyclable materials and products manufactured therefrom is provided. The method includes receiving recyclable material extracted from post consumer and post industrial sources at a manufacturing facility, acquiring information associated with the recyclable material received at the manufacturing facility, such as properties and certification(s) relating thereto, and storing the acquired information in a database for subsequent access. The recycling method may also include manufacturing a product at the manufacturing facility from the recyclable material, generating product information associated with the product such as properties and certification(s) relating thereto, and storing the product information in the database. The product may then be shipped with the product information and certification information stored in a tangible medium to provide quality certified “green” recycled products for use in building construction. | 01-06-2011 |
| 20110083586 | CONTROLLED RELEASE OF CHEMICAL ADMIXTURES - A method of controlling release of an admixture in a cement-based composition involves intercalating an admixture (e.g. an accelerator, a set retarder, a superplasticizer) for the cement-based composition into a layered double hydroxide or mixture thereof. A cement-based composition prepared in such a manner and containing a cement-based material (e.g. cement, mortar or concrete) has better workability, especially in respect of slump-loss characteristics. | 04-14-2011 |
| 20110253013 | RESTRAINING EXPANSIVE CONCRETE WITH NON-METALLIC FIBERS - Synthetic fibers, such as polypropylene fibers, are mixed in a shrinkage compensating concrete to provide restraint in lieu of conventional steel reinforcement used in a shrinkage compensating concrete. While the synthetic fibers have a low elastic modulus and low strength, they act to restrain expansion of the concrete in the same way that conventional steel rebar does. In addition, only a small amount of the synthetic fibers are needed to restrain the expansion. As a result, shrinkage compensating concrete can be used in more varied applications, and can be provided more quickly, easily and inexpensively. Construction time requirements and expenses of concrete structures are correspondingly reduced. | 10-20-2011 |
| 20160096773 | COMPOSITIONS AND METHODS FOR CONTROLING SETTING OF CARBONATABLE CALCIUM SILICATE CEMENTS CONTAINING HYDRATING MATERIALS - The invention provides compositions and methods for controlling setting of carbonatable calcium silicate compositions that are contaminated with hydrating materials. These carbonatable calcium silicate cements are suitable for use as non-hydraulic cement that hardens by a carbonation process and may be applied in a variety of concrete components in the infrastructure, construction, pavement and landscaping industries. | 04-07-2016 |
| 20160107938 | ACCELERATOR FOR MINERAL BINDERS - A method for preparing a setting and hardening accelerator for mineral binders including a step of: (i) reacting a calcium compound CV with a silica sol SL, a molar ratio of Si:Ca being less than 0.1 during the reaction. | 04-21-2016 |
