Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8075687 | Hydraulic binder comprising a ternary acceleration system and mortars and concretes comprising one such binder A hydraulic binder based on slag cement, the slag cement including 20 to 80 weight % relative to a total weight of slag cement, of a blast furnace slag or a mixture of blast furnace slags, relative to the total weight of the slag cement, the hydraulic binder includi... | 12/13/2011 |
| 7594964 | High strength magnesium slag brick and method of producing the same This invention discloses a high strength magnesium slag brick and a method of producing the same. The high strength magnesium slag brick is composed of 60 to 80 percent by weight of furnace slag from the reduction process of a magnesium production, 15 to 25 percent ... | 09/29/2009 |
| 7470322 | Cementing composition with controlled mechanical properties A cement composition for which the mechanical properties of the set cement can be controlled independently of the slurry density, both at high density (>16 ppg) and at low density ( | 12/30/2008 |
| 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 |
| 7294193 | Cementitious materials including slag and geopolymers Cementitious materials including slag and geopolymer can be added to conventional cement compositions, such as Portland cement, as a partial or total replacement for conventional cement materials. The slag may comprise silicates and/or oxides of calcium, silicon, ma... | 11/13/2007 |
| 7267720 | Method for preparing a building material A method of preparing a building material is provided. An aggregate material, water, a hydraulic binder material, and one or more hydraulic activators are mixed. The hydraulic binder material comprises slag material. The mixture is allowed to harden. A building mate... | 09/11/2007 |
| 7247201 | Pre-blend cement compositions containing non-chloride accelerators The present invention relates to pre-blend cement for general-purpose concrete construction containing Class-F fly ash, Class-C fly ash or slag, and less than about 5 percent (w/w) of sodium thiocyanate (NaSCN) and/or calcium nitrate (Ca(NO3)2)... | 07/24/2007 |
| 7191834 | Foamed cement compositions and associated methods of use A method of cementing in a subterranean formation that comprises providing a foamed cement composition that comprises water, a cement, a gas, and an additive, the additive comprising an anionic foaming agent and at least one of an anionic foam stabilizer or a Zwitte... | 03/20/2007 |
| 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 |
| 7160844 | Proppants and their manufacture Small spheres, commonly referred to as proppants, are manufactured from sol-gel ceramics, preferably aluminosilicates or phosphates, and include chemical composites termed geopolymers. In the preferred manufacturing process, the required chemical components are blen... | 01/09/2007 |
| 7141112 | Cementitious materials including stainless steel slag and geopolymers Cementitious materials including stainless steel slag and geopolymer can be added to conventional cement compositions, such as Portland cement, as a partial or total replacement for conventional cement materials. The stainless steel slag may comprise silicates and/o... | 11/28/2006 |
| 7135068 | Method for oxidizing treatment of steel works slag and resulting LD slag A treatment method includes injecting oxygen into the liquid steel works slag, adding and dissolving in the slag alumina and lime sources, and optionally silica and iron sources and cooling the slag until solidification, the additions being carried out in such amoun... | 11/14/2006 |
| 7097706 | Non-heating clay composites for building materials The object of this invention is to provide a non-calcined clay composite used as building materials capable of promoting humans' health and being desirably used irrespective of location, which is improved in terms of strength without calcining clay. Because the non-... | 08/29/2006 |
| 7073584 | Processes for incorporating inert gas in a cement composition containing spherical beads The present invention provides a process for forming cement in a well bore. In this process, a cement composition is formed that comprises a cement and one or more beads mixed with the cement. The cement composition containing the beads is displaced into the well bo... | 07/11/2006 |
| 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 |
| 7022755 | Resilient cement compositions and methods of cementing Resilient cement compositions and methods of cementing using the compositions are disclosed. A resilient cement composition of the invention comprises hydraulic cement, an aqueous rubber latex and a rubber latex stabilizing surfactant comprising an iso-dodecyl alcoh... | 04/04/2006 |
| 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 |
| 6978834 | Foamed and non-foamed cement compositions including silane treated amorphous silica and methods The present invention provides improved methods of cementing and cement compositions. A cement composition of the invention comprises hydraulic cement, silica hydrophobicized with a mixture of organosilicon compounds and water which upon hardening has high shear bon... | 12/27/2005 |
| 6953505 | Stable and biodegradable foamed cement slurries, additives and methods The present invention relates to stable and biodegradable foamed cement slurries, additives and methods. A foamed cement slurry of the invention comprises a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and a biodegradable foamin... | 10/11/2005 |
| 6951249 | Foamed cement slurries, additives and methods The present invention relates to foamed cement slurries, additives and methods. A foamed cement slurry of the invention comprises a hydraulic cement, sufficient water to form a slurry, sufficient gas to form a foam and an environmentally benign foaming and stabilizi... | 10/04/2005 |
| 6946014 | Method for oxidizing treatment of steel plant slag to obtain cement-based materials A method for treating a raw steel plant slag to transform it into a hydraulic binder at least equivalent to a Portland cement clinker, comprises the following steps: oxidizing treatment with input of oxygen, air or a mixture thereof at a pressure ranging between 1 t... | 09/20/2005 |
| 6939834 | Grout for making watertight screens The invention relates to a grout for making watertight screens which comprises a mixture of water, natural or modified clay, specific blast furnace slag and an activating agent. The invention also relates to a process which makes use of said grout, as well as... | 09/06/2005 |
| 6910537 | Canister, sealing method and composition for sealing a borehole Method and composition for sealing a borehole. A chemically bonded phosphate ceramic sealant for sealing, stabilizing, or plugging boreholes is prepared by combining an oxide or hydroxide and a phosphate with water to form slurry. The slurry is introduced into the b... | 06/28/2005 |
| 6907928 | Storable cementitious slurries containing boric acid and method of using the same A storable, hydraulically-active, cementitious slurry is made and used to cement within subterranean foundations for oil and gas wells. The slurry is made from a hydraulically-active cementitious material, a suspending agent, and, as a retarder, boric acid. The bori... | 06/21/2005 |
| 6869473 | Cementicious materials including stainless steel slag and geopolymer Cementicious materials including stainless steel slag and geopolymer can be added to conventional cement compositions, such as Portland cement, as a partial or total replacement for conventional cement materials. The stainless steel slag may comprise silicates and/o... | 03/22/2005 |
| 6843843 | Underwater immersion block and method to produce the same It is an object of the invention to effectively absorb and remove CO2 in an exhaust gas generated during an industrial process for reducing an amount of exhausting CO2 into the atmospheric air. The exhaust gas containing CO2 is blown... | 01/18/2005 |
| 6840996 | Cement composition A cement composition of an environmental impact reducing type, used in the field of civil engineering and construction, which provides initial strength-development equal to that of ordinary Portland cement and which can reduce the clinker calcination amount, is prov... | 01/11/2005 |
| 6835244 | Use of organic carbon-containing minerals A synthetic slag is produced by melting the mineral content of an organic carbon-containing mineral, for example, oil shale or tar sands, with a source of lime such as cement kiln dust. The organic carbon, especially hydrocarbon, content of the mineral is oxidized b... | 12/28/2004 |
| 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 |
| 6755905 | Use of high carbon coal ash A synthetic slag is produced by a high temperature combustion reaction between coal ash having a high carbon content, and a source of lime such as cement kiln dust. The carbon content of the coal ash is oxidized by oxygen gas, which typically is derived from air or ... | 06/29/2004 |
| 6709509 | Portland cement manufacture from slag from the production of magnesium metal A process for the production of Portland cement and white Portland cement using magnesium furnace slag, a waste product from the manufacture of magnesium metal, as a primary starting material. The furnace slag is blended with calcium oxide and silicon dioxide to for... | 03/23/2004 |
| 6699321 | Concrete composition A concrete composition contain glass, including ordinary recycled glass is provided. The invention also relates to methods of producing the concrete compositions of the invention. A concrete composition containing glass particles, including recycled glass... | 03/02/2004 |
| 6695911 | Method and installation for production of cement clinker In the production of cement clinker or cement with the addition of a cement additive (40), such as for example slag, which is ground in a closed-circuit grinding installation into slag meal (32) of equal fineness to cement, in order to utilize excess slag... | 02/24/2004 |
| 6676747 | Method for producing puzzolanic binders for the cement industry from steel slags using a reduction metal bath In a method for producing puzzolanic or hydraulic grinding additives for the cement industry from basic oxidic slags, in particular steel slags, using a metal bath for the reduction of metal oxides contained in the slags, the basicities of the liquid slag... | 01/13/2004 |
| 6626242 | Storable composition and slurries and use of same for cementing oil and gas wells Storable compositions and slurries for cementing oil and gas wells are described which comprise blast-furnace slag besides other additives which are usual in the cementing technique. The compositions and slurries are insufficiently activated (or are activ... | 09/30/2003 |
| 6616753 | Methods and compositions for sealing subterranean zones Methods and compositions for sealing subterranean zones penetrated by well bores are provided. The methods basically comprise the steps of introducing a sealing composition into the subterranean zone comprised of a hydraulic cement, sufficient water to fo... | 09/09/2003 |
| 6613142 | Storable compositions and slurries and use of same for cementing oil and gas wells Storable compositions and slurries for cementing oil and gas wells are described which comprise blast-furnace slag besides other additives which are usual in the cementing technique. The compositions and slurries are insufficiently activated (or are activ... | 09/02/2003 |
| 6593262 | Porosifying, solidification-accelerating additive for binding agent building materials, and process of producing A porosifying, solidification-accelerating additive for binding agent building materials consisting of Al2 O3, 50-90%; MgO, 4-20%; SiO2, 0.5-15%; AlN, 0.1-5%; Fe2 O3, 0.1-5%; CaO, 0.1-5%; F, 0.1-5%; N... | 07/15/2003 |
| 6521040 | Method for processing chromium oxide-containing substances in large quantities, method for utilizing the processed substances, and products comprising the processed substances A method of rapidly reducing chromium oxide-containing slag and the like in large quantities, in a simplified manner and without requiring high temperatures. Chromium oxides are reduced with at least one of elementary sulfur and compounds of sulfur having... | 02/18/2003 |
| 6506249 | Delayed-setting concrete The invention relates to a delayed-setting concrete based on blast furnace slag. The invention further relates to a method of initiating the setting of said concrete.... | 01/14/2003 |
