Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 8167998 | Lightweight concrete compositions A lightweight ready-mix concrete composition that contains 8-20 volume percent cement, 11-50 volume percent sand, 10-31 volume percent prepuff particles, 9-40 volume percent coarse aggregate, and 10-22 volume percent water, where the sum of components used does not ... | 05/01/2012 |
| 8167997 | Concrete mixtures having stabilized foam admixture Flowable concrete mixtures have an aqueous foam admixture mixed therein to give the concrete mixture desired strength, flowability, and density. The concrete mixtures include a hydration stabilizer to stabilize the aqueous foam. The hydration stabilizer inhibits the... | 05/01/2012 |
| RE43253 | Lightweight concrete compositions A lightweight concrete composition containing from 10 to 90 volume percent of a cement composition, from 10 to 90 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g/cc to 0.64 g/cc, an aspect ratio o... | 03/20/2012 |
| 8110040 | Lightweight structure concrete composition A lightweight structural concrete is composed of coarse structural aggregate sized between ¼″ to ½″ occupying 15% to 25% of total concrete volume, large non-structural lightweight aggregate such as expanded polystyrene bead of a particular size distribution an... | 02/07/2012 |
| 8083851 | Antimicrobial cements and cementitious compositions Efficient antimicrobial additives are provided comprising a wettable, cake-forming inorganic material having dispersed therein an inorganic or organometallic antimicrobial agent capable of releasing antimicrobial metal ions. These antimicrobial additives are especia... | 12/27/2011 |
| 8016939 | Self-curing concrete A self-curing concrete is provided to absorb water from atmosphere from air to achieve better hydration of cement in concrete. It solves the problem that the degree of cement hydration is lowered due to no curing or improper curing, and thus unsatisfactory propertie... | 09/13/2011 |
| 7985293 | Hydraulic composition A hydraulic composition is provided. This composition exhibits an improved workability in its coating with a trowel, and accordingly, an improved working efficiency with no adverse effects on its physical properties. The hydraulic composition comprises at least one ... | 07/26/2011 |
| 7972435 | Amine containing strength improvement admixture A strength improvement admixture composition is provided that increases the compressive strength of cementitious compositions without negatively increasing the setting time. The admixture comprises the components of a polycarboxylate dispersant and strength improvem... | 07/05/2011 |
| 7947127 | Cement retarder systems, and retarded cement compositions A cement retarder system for use in underground wells included a borate compound, an organophosphonate salt, and a copolymer formed from AMPS and a monomer selected from the group consisting of acrylic acid, acrylamide and mixtures thereof. A method of using the ret... | 05/24/2011 |
| 7883577 | Rheology stabilizer for cementitious compositions An admixture formulation of at least one polycarboxylate dispersant and at least one naphthalene dispersant is provided. When the polycarboxylate dispersant and the naphthalene dispersant of the admixture formulation are combined at various ratios the admixture form... | 02/08/2011 |
| 7862655 | Subterranean cementing methods and compositions comprising oil suspensions of water soluble polymers Of the many methods and compositions provided herein, one method comprises providing a cement composition, wherein the cement composition comprises a cementitious component and an additive comprising a polymer, a phosphorus component, a polyvalent metal ion, an oil-... | 01/04/2011 |
| 7824489 | Cement compositions comprising environmentally compatible defoamers and methods of use Cement compositions including environmentally compatible defoamers and methods of using such cement compositions are provided herein. An example of a method is a method of reducing foam generation in a cement composition. An example of a composition is a is a cement... | 11/02/2010 |
| 7799129 | Lightweight structural concrete provided with various wood properties A lightweight structural concrete with screw-ability and nail-ability similar to wood is composed of a non-structural and ultra lightweight aggregate such as expanded perlite or a combination of expanded perlite and polystyrene beads of a particular size distributio... | 09/21/2010 |
| 7731793 | Fluid loss additive with improved rheological properties A polymeric fluid loss additive for hydraulic cement which includes a polymer component which exhibits delayed hydration. The fluid loss additive is suitable for use in cement slurries which may be subjected to elevated temperatures, as is common in oil and gas dril... | 06/08/2010 |
| 7699929 | Lightweight concrete compositions A lightweight concrete composition containing from 10 to 90 volume percent of a cement composition, from 10 to 90 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g/cc to 0.64 g/cc, an aspect ratio o... | 04/20/2010 |
| 7670426 | Concrete mixtures having aqueous foam admixtures Flowable concrete mixtures have an aqueous foam admixture mixed therein to give the concrete mixture desired strength, flowability, and density. The concrete mixtures include a hydration stabilizer to stabilize the aqueous foam. The hydration stabilizer inhibits the... | 03/02/2010 |
| 7666258 | Lightweight compositions and articles containing such A lightweight cementitious composition containing from 22 to 90 volume percent of a cement composition and from 10 to 78 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g/cc to 0.64 g/cc, an aspect ... | 02/23/2010 |
| 7658797 | Lightweight concrete compositions A lightweight ready-mix concrete composition that contains 8-20 volume percent cement, 11-50 volume percent sand, 10-31 volume percent prepuff particles, 9-40 volume percent coarse aggregate, and 10-22 volume percent water, where the sum of components used does not ... | 02/09/2010 |
| 7632348 | Lightweight concrete compositions containing antimicrobial agents A lightweight concrete composition containing from 10 to 90 volume percent of a cement composition, from 10 to 90 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g/cc to 0.64 g/cc, an aspect ratio o... | 12/15/2009 |
| 7621995 | Concrete mixtures having high flowability A viscosity modifying agent is added to a concrete mixture to give the concrete desirable rheological properties. The viscosity modifying agent is incorporated into a foam admixture before it is mixed into the concrete. Because the viscosity modifying agent is a com... | 11/24/2009 |
| 7618490 | Spraying material and spray technique employing the same To provide a spraying material having an excellent quick-setting property and excellent adherability, a small alkali amount and excellent initial strength development, and a spraying method using it. The spraying material comprises a liquid quick-setting admi... | 11/17/2009 |
| 7608143 | Methods of reducing hydroxyl ions in concrete pore solutions Methods of reducing hydroxyl ions in concrete pore solutions are provided. Such methods are useful in providing resistance to gels which form in concrete due to the alkali-silica (ASR) reaction. The methods comprise, in one aspect, adding a salt, in aqueous or solid... | 10/27/2009 |
| 7591893 | Dense mortar based on binary ettringite binder, comprising at least one poly(alkylene oxide) comb polymer and at least one structuring organic resin A dense mortar includes: (i) an ettringite binder, including calcium sulphate and a calcium aluminate mineral compound, (ii) at least one poly(alkylene oxide) comb polymer and, (iii) at least one organic resin, the organic resi... | 09/22/2009 |
| 7537656 | Cement compositions comprising biodegradable monomers for retarding the setting thereof Cement compositions may comprise one or more secondary amines substituted with a carboxyl group or salts thereof (e.g., 3-hydroxy N,N′-iminodisuccinic acid) for retarding the setting of such compositions. The inclusion of such materials in cement compositions may ... | 05/26/2009 |
| 7449062 | Cement compositions for reducing gas or water migration and methods of using the same A method of cementing a wellbore comprising preparing a cement composition comprising a water-soluble aromatic sulfonated polymer, and placing the cement composition into the wellbore, wherein the cement composition develops a compressive strength of greater than ab... | 11/11/2008 |
| 7445670 | Foamed cement compositions and associated methods of use A method is provided for reducing the density of a well cement composition for cementing in a subterranean formation. The method comprises providing a cement composition that comprises water and a cement, and then adding an additive comprising an anionic foam stabil... | 11/04/2008 |
| 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 |
| 7410536 | Oxidation-stable iron oxide pigments, process for preparing them and their use The present invention relates to oxidation-stable iron oxide pigments which have a coating of at least one organic substance, to their preparation and to their use. ... | 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 |
| 7402204 | Flexible cementing compositions and methods for high-temperature wells A well cementing composition comprises an hydraulic cement and flexible, acrylonitrile-butadiene copolymer particulate material. A method of cementing a well comprises mixing the composition with sufficient water, and optionally, other additives to form a pumpable s... | 07/22/2008 |
| 7398828 | Well cementing slurries containing fibers The problem of fiber or particle settling in well cement slurries is addressed by providing a fluid containing two fiber components of differing properties. Such a well treatment fluid, comprising a base fluid; a first fiber component that it substantially more dens... | 07/15/2008 |
| 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 |
| 7396403 | Concrete reinforced with acrylic coated carbon fibers Concrete products and dry concrete mixes comprise cement, acrylic coated carbon fibers, and any optional components such as silica fumes, slag, stone, sand, and/or other aggregates. Preferably, the acrylic coated carbon fibers have a length of about 2½ inches to ab... | 07/08/2008 |
| 7393408 | Modified powdered mass for treatment of soils and loose building materials Modified Powdered Mass for treatment of soils and loose building materials containing caustic lime and/or calcareous hydraulic binders and a modification component, where the modification component consists of linear olefins containing 10 to 24 carbon atoms, alone o... | 07/01/2008 |
| 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 |
| 7387674 | Method for solidifying soil and industrial waste, and solidified materials prepared thereby Disclosed herein are a method for solidifying soil and industrial waste and a solidified material prepared thereby. The solidified material of soil and industrial waste is prepared by adding 2-6 parts by weight of a 3-5-fold dilution of a solidifying agent and 3-15 ... | 06/17/2008 |
