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| Number | Title | Issue Date |
| 7285166 | Zeolite-containing cement composition Methods and cement compositions are provided for sealing a subterranean zone penetrated by a wellbore, wherein the cement composition comprises zeolite, cementitious material, and a mixing fluid. ... | 10/23/2007 |
| 7070647 | Cement composition A novel cement is alkalescent, capable of solidifying a wide range of soil and applicable to biological environment. The cement composition contains 100 parts by weight of magnesium oxide, 5 to 25% by weight of at least one of silicic acid, alumina and iron oxide, 3... | 07/04/2006 |
| 7070648 | Preparation of gypsum compositions A gypsum composition containing a sulfonate-containing comb-branched copolymer is disclosed. The sulfonate-containing comb-branched copolymer comprises recurring units of a polyether macromonomer, an acrylic monomer, and a sulfonate monomer. The sulfonate-containing... | 07/04/2006 |
| 6989057 | Zeolite-containing cement composition A method and cement composition is provided for sealing a subterranean zone penetrated by a well bore, wherein the cement composition comprises zeolite, cementitious material, and water sufficient to form a slurry. ... | 01/24/2006 |
| 6936645 | Method of finishing a drywall and a compound therefor The method for sealing a seam between adjacent structural panels significantly reduces the time for finishing a drywall in comparison with conventional methods, which use multiple applications of a joint compound to seal the seam. An drywall joint compound is mixed ... | 08/30/2005 |
| 6902797 | Gypsum-based composite materials reinforced by cellulose ethers A gypsum-based composite structure is prepared from a slurry comprising a mixture of calcium sulfate hemihydrate, a cellulose ether additive other than CMC and an amount of water that is sufficient to form a slurry. The calcium sulfate hemihydrate is hydrated by the... | 06/07/2005 |
| 6824606 | Additive for special plasters and mortars, compositions containing the additive and utilization of the additive in special plasters and mortars A water retaining additive for conglomerate building materials, free of cellulose-like derivatives, that comprises at least a rheological grade clay, preferably sepiolite, and a modified natural gum such as guar gum, as well as conglomerate compositions that contain... | 11/30/2004 |
| 6740395 | Substrate smoothed by coating with gypsum-containing composition and method of making A rough-surfaced substrate, such as a fiberboard, is provided with a smoother surface by applying a coating comprising calcium sulfate hemihydrate which has been prevented from hydrating to gypsum by set preventer, and which sets when brought into contact with a set... | 05/25/2004 |
| 6648965 | Fire door components and fire doors comprising the components Structural components for a fire door comprising a core and edge banding and other structural components, the components comprising gypsum, expanded perlite, and cement, and having a density between about 60 and 80 lbs./ft.3. Also, a method by ... | 11/18/2003 |
| 6641658 | Rapid setting cementitious composition A rapid setting cementitious composition useful for making cement boards employs an insoluble form of anhydrous calcium sulfate (anhydrite) to accelerate setting and to permit reducing the amount of high alumina cement usage.... | 11/04/2003 |
| 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 |
| 6572698 | Activated aluminosilicate binder An activated aluminosilicate binder containing aluminosilicates, calcium sulphate and an activator containing alkali metal salts is disclosed. The aluminosilicates are selected from a group consisting of blast furnace slag, clay, marl and industrial by-pr... | 06/03/2003 |
| 6554893 | Fire door core The present invention describes an improved building material composition, useful for example as a fire door core and to improved methods of making this composition. The building material of the present invention consists essentially of expanded perlite, ... | 04/29/2003 |
| 6475275 | Cement composition A cement composition contains 35-85% by weight of a cement, 3-15% by weight of a clay, 1-50% by weight of an aggregate and/or a fibrous material, and 0.2-5% by weight of a high efficiency retarder. A benefit of the present invention is that equipment used... | 11/05/2002 |
| 6406535 | Material for constructional finished wallboard A constructional finished wallboard is formed of a mixture including 50 to 65 wt. % of dried shirasu, 30 to 40 wt. % of a plaster component, 3 to 10 wt. % of a clay component, 5 to 10 wt. % of shirasu balloons, 0.8 to 2 wt. % of a bond reinforcing compone... | 06/18/2002 |
| 6387172 | Gypsum compositions and related methods A set gypsum composition and methods for the preparation thereof are disclosed. The set gypsum composition comprises a continuous phase of interlocking set gypsum matrix having an enhanced water voids volume and/or is prepared from a mixture (e.g., slurry... | 05/14/2002 |
| 6379455 | Chemical agent for improving the engineering properties of soil A chemical agent for improving the engineering properties of soil includes a mixture of cementitious pozzalans (5 to 60% by mass), calcium sulphate (20 to 80% by mass), an oxide of calcium (15 to 50% by mass) and silica oxide (1 to 30% by weight). Monofil... | 04/30/2002 |
| 6350304 | Building material The construction material comprises a construction base material and microcapsules inside of which liquid containing hinokitiol is incorporated and a plurality of which are to be mixed into the construction base material and the liquid in the microcapsule... | 02/26/2002 |
| 6340389 | Fire door core The present invention describes improved fire door cores and improved methods of making these fire door cores. The fire door core of the present invention comprises expanded perlite, a fireproof binder, fire clay or vermiculite, and optionally one or more... | 01/22/2002 |
| 6299970 | Fire-resistant gypsum fiberboard Fiberboards are provided containing at least about 65 wt. % calcium sulfate dihydrate derived from hemihydrate or anhydrous gypsum, and at least about 7 wt. % pulped paper fibers. The boards are capable of being formed into structural members having super... | 10/09/2001 |
| 6277190 | Use of alcohols as additives for plaster and/or mortar Mortars and plasters containing additives which are alcohols having from 8 to 72 carbon atoms adsorbed on solid supports, and processes for the preparation of the additives.... | 08/21/2001 |
| 6200380 | Method for continuous production for wallboard tape joint compound A method of continuously producing a cementitious composition such as joint compound includes pre-mixing at least two dry ingredients and pre-mixing at least two liquid ingredients. The ingredients are provided in a continuous mixing apparatus and at leas... | 03/13/2001 |
| 6162288 | Sprayable fireproofing composition Improved sprayable gypsum-based fireproofing composition comprising a lightweight aggregate and a set retarding agent in an amount effective to delay the setting of said composition for at least 24 hours and preferably for at least 72-96 hours without cau... | 12/19/2000 |
| 6096373 | Sprayable composition and method for forming a foamed outdoor protective cover layer A sprayable composition and a method of protecting material with the composition is disclosed. The composition comprises a bulking/setting material, a water soluble polymer and water to provide a cover layer which, after spraying, is tough, flexible and w... | 08/01/2000 |
| 6007620 | Process to make interground, white, blended cement A process of manufacturing blended white cement comprises the following steps: (a) providing anhydrous alumino-silicate, diatomaceous earth, and/or other natural pozzolans; (b) providing white clinker; (c) providing gypsum; and (d) combining and grinding ... | 12/28/1999 |
| 5997632 | Blended hydraulic cement The present invention is directed to blended hydraulic cement compositions which are formed with subbituminous fly ash. In one embodiment, the cement composition comprises from about 0.1 wt. % to about 7 wt. % of a retarding agent; from about 0.1 wt. % to... | 12/07/1999 |
| 5961712 | Method for making shotcrete and such compositions The invention provides cementitious mixtures, particularly for use as shotcrete binding materials. The resultant shotcrete has characteristics of rapid setting as low as 5 to 10 minutes, high early compressive strength (5 to 25 MPa in two hours curing, 20... | 10/05/1999 |
| 5945208 | Fire-resistant gypsum building materials Fiberboards are provided containing at least about 65 wt. % calcium sulfate dihydrate derived from hemihydrate or anhydrous gypsum, and at least about 7 wt. % pulped paper fibers. The boards are capable of being formed into structural members having super... | 08/31/1999 |
| 5882146 | Immobilization of materials There is disclosed a method for immobilizing an oily or non-polar substance in a concrete matrix comprising the following steps: (a) absorbing the said oily or non-polar substance into a calcined clay mineral; (b) incorporating the calcined clay mineral and ab... | 03/16/1999 |
| 5788762 | Cementitious systems and methods of making the same Novel cementitious systems comprised of gypsum, calcined clay, and clinker consisting essentially of hydraulic calcium silicates are disclosed which have the following properties: (1) a water demand of less than about 33% nc; (2) one-day strengths of at l... | 08/04/1998 |
| 5749963 | Hardenable mortar composition The hardenable mortar composition consists of a bonding agent component including a hydraulic bonding agent, such as cement, gypsum or mortar, and a paste-forming agent consisting of a liquid solvent inert with respect to the hydraulic bonding agent, and ... | 05/12/1998 |
| 5707443 | Grouting materials and their use A grouting material which is self-dispersing when brought into contact with a volume of water containing liquor or slurry and is settable to a solid mass after such dispersion, the material being in the form of self-dispersing granules or pellets and comp... | 01/13/1998 |
| 5651816 | Cement, cement products, molding material, concrete member and a method of producing the same Cement comprising hydraulic cement and polymer precursor such as alcohol-soluble phenol resin precursor that is substantially anhydrous and generates water by polymerization.... | 07/29/1997 |
| 5626665 | Cementitious systems and novel methods of making the same Novel cementitious systems comprised of gypsum, calcined clay, and clinker consisting essentially of hydraulic calcium silicates are disclosed which have the following properties: (1) a water demand of less than about 33% nc; (2) one-day strengths of at l... | 05/06/1997 |
| 5482543 | Multipurpose, ecological water-paint A new and original water paint is disclosed, in liquid form, such as a milky emulsion, containing a low amount of water and comprising minerals, acetic acid solution, and other components. The new water paint has bactericidal, fireproof, transpiring, ecol... | 01/09/1996 |
| 5482551 | Extruded fire resistant construction and building products An extrudable composition is provided which is made up primarily of gypsum, a binder/rheology aid and water with a crumbly, semi-dry consistency. The extrudable composition described can be extruded through a die to provide a building product. Density can... | 01/09/1996 |
| 5277712 | Dry mix-type joint compounds, compositions therefrom and methods for filling drywall joints with same A dry mix-type, drywall panel joint compound is produced which comprises (a) a fine plaster which is applied to a joint formed between adjacent drywall panels in the plastic state to form a hardened material, (b) a material which imparts internal strength... | 01/11/1994 |
| 5098612 | Method of preparing solidified and stabilized hazardous or radioactive liquids An aqueous liquid or sludge waste is solidified by mixing it with a clay selected from the group consisting of sodium Montmorillonite, attapulgite, sepiolite, and mixtures thereof and a cementitious material coated with a fluid silicone polymer.... | 03/24/1992 |
| 4994112 | Hydrophobically modified cellulosic thickeners for paper coating Hydroxyalkylcellulose hydrophobically modified with a C12 to C16 alkyl or aralkyl group represents a preferred thickener for a paper coating composition to obtain uniform coating at high speed. The process for manufacture involves: preparing an aqueous co... | 02/19/1991 |
| 4988390 | Method for production of inclusion water for hardening gypsum, method for production of shaped article of gypsum, and shaped article of gypsum A shaped article of gypsum possessing heretofore unattainable high strength, a method for the production of the shaped article, and a method for the production of inclusion water indispensable to the hardening by hydration of the production of the shaped ... | 01/29/1991 |
