Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7988783 | Additive for hydraulically setting systems, the hydraulically setting mixtures and the use there of The invention relates to an additive for hydraulically setting systems based on modified polycarboxylates and water-soluble ethers of high polymeric polysaccharides, optionally containing further standard additives, characterized by a content of a) a water-soluble e... | 08/02/2011 |
| 7922811 | Biomass-derived grinding aids Compositions and methods for increasing grinding efficiency of cement, cement clinker, raw materials for cement, and other inorganic particles. Use of biomass-derived polyols such as diols, triols, or mixtures thereof, optionally with a conventional grinding aid, ce... | 04/12/2011 |
| 7892353 | Glycerin by-products and methods of using same Methods and compositions for grinding materials are provided. In an embodiment, the present invention provides a method of grinding solid materials. For example, the method can comprise mixing the solid material with the grinding aid, and using a grinding media such... | 02/22/2011 |
| 7887630 | Glycerin by-products and methods of using same Methods and compositions for grinding materials are provided. In an embodiment, the present invention provides a method of grinding solid materials. For example, the method can comprise mixing the solid material with the grinding aid, and using a grinding media such... | 02/15/2011 |
| 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 |
| 7438757 | Concrete block and method of making same A concrete building block containing Portland cement, a filler, water, and a quantity of particularly sized plastic particles, such as spent abrasive particles of a thermoset plastic. The associated method of producing such blocks eliminates the need of curing the b... | 10/21/2008 |
| 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 |
| 7410538 | Granulated hydrophobic additive for cementitious materials A cementitious material in powder form comprising cement, also comprises sufficient of a granulated hydrophobing additive, which comprises form 5 to 15 parts by weight of an organopolysiloxane component, form 10 to 50 parts by weight of a water-soluble or water-disp... | 08/12/2008 |
| 7404855 | 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... | 07/29/2008 |
| 7399355 | Fluid loss control additive and cement compositions comprising same A fluid loss control additive comprising a crosslinked polymer and sugar and cement compositions comprising the same. In one embodiment, the fluid loss control additive comprises a polymer and a sugar connected by a pH-sensitive crosslink. In some embodiments, the p... | 07/15/2008 |
| 7393886 | Cement dispersant and concrete composition containing the dispersant A superior cement dispersant and a concrete composition containing the cement dispersant, the cement dispersant being a water-soluble amphoteric copolymer which contains an alkylene oxide adduct of a polyamide polyamine having an unsaturated group and at least two t... | 07/01/2008 |
| 7393814 | Methods, cement compositions and oil suspensions of powder Methods, cement compositions and oil suspensions of powders selected from the group consisting of micro-silica, silica flour, fine silica flour, silica sand, fine particle size cement, ultra-fine particle size cement, fly ash, slag, vitrified shale and zeolite. ... | 07/01/2008 |
| 7393407 | Silicon oxide slurry and method for producing such slurry The present invention relates to a slurry containing water, amorphous silica panicles having a particle size less than 1 micron and silica flour with a particle size between 2-200 microns. In order to stablize the slurry, the slurry contains a polysaccharide. The in... | 07/01/2008 |
| 7381264 | Admixture A liquid accelerator composition for sprayed concrete, comprising aluminium sulphate, amorphous aluminium hydroxide, alkanolamine and an organic dibasic acid anhydride. The compositions allow the attainment of high early compressive strength, and they can be tailore... | 06/03/2008 |
| 7374699 | Slurry rheology modifier A slurry rheology modifier comprises a first water-soluble low-molecular compound [referred to hereinafter as compound (A)] and a second water-soluble low-molecular compound [referred to hereinafter as compound (B)] being different from the compound (A), wherein the... | 05/20/2008 |
| 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 |
| 7350574 | Methods of retarding the setting of a cement composition using biodegradable monomers Methods of retarding the setting of a cement composition comprise including one or more secondary amines substituted with a carboxyl group or salts thereof (e.g., 3-hydroxy N,N′-iminodisuccinic acid) in the cement composition. The inclusion of such materials in ce... | 04/01/2008 |
| 7344592 | Controlled low strength flowable fill composition with iron chelating compounds A rapid setting, controlled low strength composition of Class C fly ash is provided having a quantity of hydrated lime and an iron chelating compound in an amount sufficient to accelerate the hydration and set time of the fly ash. In some examples, a filler material... | 03/18/2008 |
| 7341627 | Fiber reinforced concrete products and method of preparation Concrete products and mixes with reinforcing carbon graphite fibers, the carbon fibers being provided in the form of resin coated warped beam fabric, and a method for producing reinforced concrete products, where semi-cured carbon fibers are mixed with concrete and ... | 03/11/2008 |
| 7326290 | Liquid setting accelerator for a composition comprising Portland cement The invention relates to a setting accelerator for a composition comprising Portland cement, in the form of a slurry comprising at least one calcium aluminate, 0.5 4%, preferably 0.6 2.3% of an aluminous cement setting inhibitor by weight in relation to the overall ... | 02/05/2008 |
| 7320730 | Subterranean fluids and methods of using these fluids in subterranean formations Subterranean fluids comprising a hydraulic cement in an invert emulsion, and methods of using such fluids in subterranean well cementing operations, are provided. The fluids comprise a hydraulic cement and an invert emulsion of oil, water, and a surfactant. Optional... | 01/22/2008 |
| 7316742 | Subterranean fluids having improved environmental characteristics and methods of using these fluids in subterranean formations Subterranean fluids are provided that have improved environmental characteristics, and more particularly, subterranean fluids are provided that include a hydraulic cement in an invert emulsion. Methods of using such fluids in subterranean operations also are provide... | 01/08/2008 |
| 7303014 | Casing strings and methods of using such strings in subterranean cementing operations Improved casing strings, and methods of using improved casing strings in subterranean cementing operations, are provided. An example of an apparatus is a pipe string comprising at least one pipe section and a delivery system of an activator. Another example of an ap... | 12/04/2007 |
| 7303625 | Treatment fluids comprising chlorinated carbohydrates Treatment fluid compositions, and more particularly, treatment fluid compositions that include chlorinated carbohydrates. An example is a treatment fluid that includes: a hydraulic cement; water; and a chlorinated carbohydrate. Another example of a treatment fluid i... | 12/04/2007 |
| 7294195 | Water repellant gypsum compositions In at least one embodiment, the present invention relates to a gypsum composition suitable for use in the manufacture of construction materials comprising a) gypsum, b) water, and c) a water repellancy composition comprising a hydroxy-based cellulose and a siliconat... | 11/13/2007 |
| 7293941 | Methods for cementing using compositions containing salts 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... | 11/13/2007 |
| 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 |
| 7282093 | Cement compositions with improved mechanical properties and methods of cementing in subterranean formations Foamed cement compositions comprising carbon fibers, a hydraulic cement material, sufficient water to form a slurry, an expanding additive, and optionally, other ingredients, including any suitable additives. ... | 10/16/2007 |
| 7261771 | Method of controlling the viscosity of a cementitious mixture using oppositely-charged polyelectrolytes A process for increasing the viscosity of an aqueous cementitious mixture during its working state by mixing oppositely-charge polyelectrolytes into the cementitious mixture. ... | 08/28/2007 |
| 7261772 | Gypsum composition A gypsum composition comprising water, stucco, clay, an amine compound, a polyoxyalkylene, and a comb-branched copolymer is disclosed. The gypsum composition has improved fluidity. A method for preparing the gypsum composition is also disclosed. The method comprises... | 08/28/2007 |
| 7258738 | Cementing compositions including salts 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... | 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 |
| 7255739 | Cement compositions with improved corrosion resistance and methods of cementing in subterranean formations This invention provides cement compositions that comprise a high alumina cement, vitrified shale, a soluble phosphate, and water sufficient to form a slurry. This invention also presents methods of enhancing the corrosion resistance of a cement composition that comp... | 08/14/2007 |
| 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 |
| 7244304 | Gypsum-containing board and tile, and method for producing same A method for producing a set gypsum-containing product comprising an interlocking matrix of set gypsum wherein said method comprises applying to said set gypsum one or more enhancing materials selected from the group consisting of phosphoric acid; condensed phosphor... | 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 |
| 7241391 | Biodegradable scale and corrosion inhibitor composition A biodegradable scale and corrosion inhibiting composition includes between about 50 and about 90% by weight of a protein polymer that is derived from a natural source, and between about 10 and about 20% by weight of the alkali salts of gluconic acid. ... | 07/10/2007 |
| 7232873 | Polycarboxylic acid cement dispersant and method for producing concrete secondary product A polycarboxylic acid cement dispersant that can exhibit high dispersing ability and allow deforming in early stages in the case of producing concrete products, whereby the turnover of a formwork is increased so as to improve productivity, and the method of producin... | 06/19/2007 |
