Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 8163081 | Composite materials using novel reinforcements The present invention relates to materials used for building products, construction projects, structural objects, mechanical devices and other materials applications. Specifically, the invention concerns composite materials made with reinforcing elements in a binder... | 04/24/2012 |
| 8137453 | Fiber reinforced concrete and method of manufacturing fiber reinforced concrete member Fiber reinforced concrete is generated by including fiber in a dispersed manner in a cement matrix including: cement; first pozzolanic reactant particles having a high activity; second pozzolanic reactant particles having an activity lower than the first pozzolanic ... | 03/20/2012 |
| 8123852 | Cement compositions comprising high aspect ratio materials and methods of use in subterranean formations The present invention relates to subterranean well cementing operations, and more particularly, to cement compositions that include high aspect ratio materials, and methods for using such cement compositions in subterranean formations. An example of a method of the ... | 02/28/2012 |
| 8118925 | Refractory material with stainless steel and organic fibers A refractory includes a cement, a binder and a matrix. The matrix comprises both stainless steel fibers and organic fibers. The refractory can be easily cast, without additional steel reinforcement, into large fire wall 16 panels 10 capable of meeting ... | 02/21/2012 |
| 8101016 | Precast concrete component material mixture and method of precasting A precast concrete component material mixture and method of precasting, which is used to manufacture sleepers for transportation tracks, and related precast concrete components, are provided. The precast concrete component material mixture include: 891 to 963 kg/m | 01/24/2012 |
| 7993448 | Cement-containing composition for use with alkali-resistant fiberglass and poles made therefrom A cement-containing composition, and in particular to a sand free composition employing effective amounts of cement, a superplasticizer, a metakaolin clay, an acrylic based co-polymer, and water, and which is especially adapted for use in manufacturing poles. ... | 08/09/2011 |
| 7988782 | Methods for restraining expansive concrete 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 s... | 08/02/2011 |
| 7905956 | Fiber reinforced cement composition and products and manufacturing process A fiber reinforced cement composition having the following raw material composition is provided to manufacture a fiber reinforced cement product which is excellent in bending strength, dimension stability, handling property, flexibility performance, and processabili... | 03/15/2011 |
| 7901504 | Concrete compositions A concrete which includes in parts by weight: 100 Portland cement; 50 to 200 of a sand having a single grading with a D10 to D90 between 0.063 and 5 mm, or a mixture of sands, the finest sand having a D10 to D90 between 0.063 and 1 mm and the coarsest sand having a ... | 03/08/2011 |
| 7875113 | Concrete compositions A concrete obtained through mixing a composition comprising the following constituents: a) 21 to 27% of a hydraulic binder, b) 52 to 68% of aggregate particles having a size of between 0.02 mm and 5 mm, c) 2 to 6% of pozzolanic reaction particles having a particle s... | 01/25/2011 |
| 7799127 | High early strength engineered cementitious composites Rapid repair and retrofit of existing infrastructures demand durable high early strength materials that not only deliver sufficient strength within a few hours of placement but also significantly prolong the maintenance interval. The invention comprises a class of n... | 09/21/2010 |
| 7744690 | Blast-resistant concrete also suitable for limiting penetration of ballistic fragments Concrete with improved strength and toughness. A uniform mix of first constituents comprises: cement of Blaine fineness of 280-360 m2/kg; sand at a mass ratio of 0.75-1.25 of the cement; silica fume at a mass ratio of 0.15-0.4 of the cement; silica flour ... | 06/29/2010 |
| 7727327 | Low embodied energy concrete mixture A method for making a low embodied energy cementitious mixture by blending a variety of post-consumer wastes, post-industrial wastes, as well as renewable, organic and recyclable materials with Portland cement or a material having similar cementitious properties. Th... | 06/01/2010 |
| 7727326 | Varied length fibers in a brittle material Concrete and mortar composites can be made with two or more sizes of fibers therein. The different sized fibers can be used to adjust the toughness and reliability of the composite material. The different sized fibers can also be used to increase the deflection of c... | 06/01/2010 |
| 7717997 | Integral water resistant fibre-cement A method of producing a water resistant fiber-cement product. The water repelling agent can be added or applied to the fiber-cement or indeed the material forming the fiber cement at a number of different stages in the process. The resultant material has increased w... | 05/18/2010 |
| 7641731 | Ultrahigh-performance, self-compacting concrete, preparation method thereof and use of same The invention relates to an ultra-high-performance, self-compacting light-colored concrete comprising: a cement; a mixture of calcined bauxite sands of different grain sizes, the finest sand having an average grain size of less than 1 mm and the thickest sand having... | 01/05/2010 |
| 7544241 | Method for sealing a conduit and composition for use therein A grout for repairing a conduit, such as an underwater conduit comprises, as mixed, from 40 to 50 wt % cement; from 25 to 35 wt % water; and, from 0.05 to 0.25 wt % psyllium husk; based on the total weight of the grout as mixed. ... | 06/09/2009 |
| 7494543 | Concrete compositions A concrete for making articles such as fixtures, furniture and other accoutrements having high compressive and resistive strengths, good machining, cutting and abrasion resistance properties and an aesthetically pleasing finish. This concrete is obtained through mix... | 02/24/2009 |
| 7455727 | Integral water resistant fibre-cement A method of producing a water resistant fiber-cement product. The water repelling agent can be added or applied to the fiber-cement or indeed the material forming the fiber cement at a number of different stages in the process. The resultant material has increased w... | 11/25/2008 |
| 7452418 | Unitized filamentary concrete reinforcement having circumferential binding element The present invention relates to a filamentary film construct which is used in providing cementitious mixtures supplemental and reinforcing strength upon setting, and more particularly, to a unitized filamentary construct which comprises a plurality of oriented rein... | 11/18/2008 |
| 7441600 | Cement compositions with improved mechanical properties and methods of cementing in subterranean formations The present invention provides foamed cement compositions with improved mechanical properties and methods of cementing in subterranean formations, particularly in conjunction with subterranean well operations. The foamed cement compositions comprise carbon fibers, a... | 10/28/2008 |
| 7419543 | Metal fiber concrete A mixture of metal fiber concrete based on cement, granular elements and water, comprising metal fibers whose diameter ranges from 1.15 mm to 1.8 mm, wherein the form coefficient thereof is between 35 and 45. The dosing of metal fibers is at least 80 kg/m3 | 09/02/2008 |
| 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 |
| 7393406 | In situ formation of chloride sequestering compounds The present invention provides methods and compounds for the in situ formation in concrete of chloride sequestering compounds that resist corrosion of metals contained within the concrete. These chloride sequestering compounds may include, but are not limited to, co... | 07/01/2008 |
| 7357833 | Cementitious material reinforced with chemically treated cellulose fiber The present invention relates to a fiber-reinforced cement based or cementitious material, and process for making, where the reinforcing fiber is a chemically treated cellulose or non-cellulose fiber. The fiber reinforced cementitious material includes (i) cement, (... | 04/15/2008 |
| 7351279 | Cement compositions with improved mechanical properties and methods of cementing in subterranean formations Cement compositions with improved mechanical properties and associated methods are provided, which are useful in conjunction with subterranean well operations. In certain embodiments, the cement compositions comprise carbon fibers, rubber particles, a hydraulic ceme... | 04/01/2008 |
| 7350573 | Servicing a wellbore with wellbore fluids comprising perlite Wellbore fluids comprising an expanded and ground perlite and methods of using the same are disclosed. In one embodiment, the methods include a method of cementing comprising preparing or placing a cement composition comprising cement, water, and an expanded and gro... | 04/01/2008 |
| 7341620 | Fire-insulating wall covering and a preparation method for same A sound-absorbing and fire-insulating wall covering includes, a cured mixture of: (i) 5-20% by weight mineralized wood fibre; (ii) 20-60%/by weight sand with an SiO2 content of less than 5% by weight and a greywacke content of at least 30% by weigh... | 03/11/2008 |
| 7328756 | Settable fluids comprising particle-size distribution-adjusting agents and methods of use Settable fluids comprising particle-size distribution-adjusting agents, and methods of using such settable fluids in subterranean and surface applications are provided. In certain exemplary embodiments, the settable fluid comprises a cement, a set retarder, and a pa... | 02/12/2008 |
| 7316743 | Performance concretes that do not contain additions with latent hydraulic activity A solid mixture for the preparation of concretes with a mechanical strength after 28 days that is greater than or equal to 110 MPa comprising cement, calcareous aggregates and admixtures characterised by the fact that any additions with latent hydraulic activity are... | 01/08/2008 |
| 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 |
| 7270704 | Mixture for fabrication of fireproof high-strength spherical granules and the method of their manufacture The inventive method for producing refractory high-strength spherical granules consists in separately presintering kaolin and bauxite in a rotational furnace, jointly sintering said components in order to produce a charging material, granulating, drying and screenin... | 09/18/2007 |
| 7267873 | Fiber reinforced concrete Fiber reinforced concrete has thin steel wire of diameter between 0.05 and 0.3 mm such as cut from recycled vehicle tires. To avoid the problem of balling when mixing, two alternatives are suggested. The first consists of strands of fiber, which demonstrate excellen... | 09/11/2007 |
| 7267173 | 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... | 09/11/2007 |
| 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 |
| 7229492 | Cement compositions comprising improved lost circulation materials and methods of use in subterranean formations Cement compositions that include improved lost circulation materials are provided. In certain exemplary embodiments, the improved lost circulation materials include inelastic particles of polyethylene, polystyrene, and/or polypropylene. Optionally, the cement compos... | 06/12/2007 |
| 7223055 | Structure for supporting the spindle in a machine tool and method for the manufacture thereof A support structure or sleeve for the spindle of a machine tool consists of a tubular casing, preferably made of sheet steel with a high modulus of elasticity, in contact with a layer of agglomerate obtained by casting inside the casing a mixture formed by a granula... | 05/29/2007 |
| 7223464 | Composite material and production method for composite material A composite material including a base material and composite portions is provided. The base material includes carbon fibers and carbon, and the composite portions include a plurality of protruding portions, which include at least silicon carbide, and which are forme... | 05/29/2007 |
| 7217441 | Methods for coating pipe comprising using cement compositions comprising high tensile strength fibers and/or a multi-purpose cement additive Among the methods provided is a method of coating the interior of a pipe comprising: providing a pipe having an interior surface; providing a cement composition comprising a cement component and high tensile strength fibers and/or a multi-purpose cement additive; co... | 05/15/2007 |
| 7204879 | Fiber reinforced cementitious material A fiber reinforced cementitious material and the fiber used therein are disclosed. The fiber reinforced cementitious material includes a conventional cementitious material and less than 5 pounds per cubic yard of the cementitious material of fibers dispersed therein... | 04/17/2007 |
