Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7407996 | Low dust wall repair compound A wall repair compound useful for filling and repairing cracks, holes, and other imperfections in a wall surface includes a conventional filler material, a conventional binder material, and a dust reducing additive which reduces the quantity of airborne dust particl... | 08/05/2008 |
| 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 |
| 7302779 | Method and apparatus for masonry chimney flue repair An apparatus for repairing cracks, crevices, joints, and other discontinuities in a chimney flue liner, comprises a flexible, resilient applicator having a liquid impervious rubberized coating. An electrical vibrator is installed within the applicator, for tamping t... | 12/04/2007 |
| 6936099 | Lightweight joint compound containing stable air pockets Low density joint compounds, and methods for their use are disclosed. Joint compounds comprising water, calcium carbonate, a foaming agent, and a rheology modification agent contain a plurality of stable air bubbles. Joint compounds can have densities of about 4 pou... | 08/30/2005 |
| 6902614 | Perlited Portland cement plaster joint compound additive with lime A composition and method for treating a surface is described. In one embodiment, the composition comprises about 10% to 90% by weight of cement, about 10% to 90% by weight of plaster, about 0.01% to about 20% by weight of lime, and about 0% to about 30% by weight of... | 06/07/2005 |
| 6881257 | Machinable light weight sisal-based concrete structural building material A machinable light weight sisal-based concrete structural building material and a method of making the same are disclosed. The material includes short sisal fibers in a range from about 22% (v/v) to about 33% (v/v); a cement in a range from about 12% (v/v) to about ... | 04/19/2005 |
| 6846358 | 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 is prepared from an aqueous mixture of expanded perli... | 01/25/2005 |
| 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 |
| 6447596 | Bonded aggregate composition and binders for the same Bonded aggregate compositions such as concrete, concrete repair products, high temperature refractories, high temperature insulation and fire resistant insulation are made from an aqueous solution of phosphoric acid and a separate, storable dry mixture of... | 09/10/2002 |
| 6406537 | High-strength joint compound A composition comprising calcined gypsum, trimetaphosphate ion, and a water-soluble linear polymer formed by the addition reaction of ethylene oxide and/or alkoxy-substituted ethylene oxide with water, having enhanced strength when set and exhibiting high... | 06/18/2002 |
| 6379454 | Finishing mortar for sound-absorbing coating of inner walls, ceilings and the like in buildings The invention relates to a finishing mortar for sound-absorbing coating of inner walls, ceilings and the like in buildings. It may be applied directly on concrete or some other carrying material or on underlying insulation material, such as mineral wool. ... | 04/30/2002 |
| 6340388 | Strengthened, light weight wallboard and method and apparatus for making the same A novel wallboard composition is disclosed comprising a unique combination of synthetic binders selected for their ability to establish a strengthened permanent bond in the final dry state for use in a wallboard composition comprising primarily gypsum, an... | 01/22/2002 |
| 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 |
| 5922447 | Lightweight gypsum board A lightweight gypsum board is provided, including, by dry weight, gypsum as the largest single ingredient, perlite as the second largest single ingredient, and starch as a minor ingredient, in the board. The starch may be pre-cooked prior to mixing, and i... | 07/13/1999 |
| 5911818 | Acoustical tile composition A composition suitable for making acoustical tiles in a water-felting process comprises expanded perlite, clay, a binder component selected from the group consisting of starch, latex, cellulosic fiber and mixtures thereof and optionally mineral wool. The ... | 06/15/1999 |
| 5888292 | Bonded aggregate composition and binders for the same Bonded aggregate compositions such as concrete, concrete repair products, high temperature refractories, high temperature insulation and fire resistant insulation are made from an aqueous solution of phosphoric acid and a separate, storable dry mixture of... | 03/30/1999 |
| 5804003 | Method of manufacturing an inorganic board The object of the present invention is to prevent delamination of an inorganic board. To attain this object, a method of manufacturing an inorganic board comprising forming a single mat by the paper making method by using slurry of raw material mixture su... | 09/08/1998 |
| 5795380 | Lightweight roof tiles and method of production A roof tile which is lightweight and yet strong has a dry component that includes cement, gypsum, perlite aggregate, lava stone and a powder that may be perlite powder or volcanic ash. Water and a styrene acrylic catalyst are mixed with the dry constituen... | 08/18/1998 |
| 5759260 | Method for using lightweight concrete for producing a combination therefrom and a combination produced thereby This invention is directed to a lightweight concrete combination. The combination includes a lightweight concrete product having auxiliary structures, such as at least one fastener, embedded therein. The lightweight concrete product comprises (a) cement a... | 06/02/1998 |
| 5718758 | Ultra-light high moisture retention title mortar A premixed ultra-light sandless mortar for use with clay and concrete tiles. The mortar uses ASTM standard C-332 aggregate, vermiculite or perlite aggregate in place of heavy aggregates such as sand. The mortar cement is made from portland cement, lime, a... | 02/17/1998 |
| 5641584 | Highly insulative cementitious matrices and methods for their manufacture Insulation barriers incorporating a cementitious structural matrix formed from a cementitious mixture including a hydraulic cement and water. The insulation barriers are manufactured from cementitious materials in order to be lightweight, insulative, less... | 06/24/1997 |
| 5542976 | Refractory imitation fireplace objects A blend for producing refractory imitation fireplace objects comprises between 30% and 50% amorphous aluminum siliceous mineral silicate, between 1% and 5% fibre and between 40% and 60% high temperature cement. A method of producing a slurry for casting t... | 08/06/1996 |
| 5542358 | Ultra-light high moisture retention tile mortar A premixed ultra-light sandless mortar for use with clay and concrete tiles. The mortar uses vermiculite or perlite aggregate in place of heavy aggregates such as sand. The mortar cement is made from portland cement, lime, air entraining agents, and water... | 08/06/1996 |
| 5529624 | Insulation material An improved fire retardant insulation material for buildings is disclosed. The insulation material comprises a mixture of perlite and natural or synthetic zeolite bound together by a lime-cement mixture. The insulation is reinforced by a three dimensional... | 06/25/1996 |
| 5525009 | Synthetic bulk material cover and method of using the same A synthetic cover for bulk material piles and loads in transit may be formed from a mixture of liquid, binder, and fibers. These constituents may be mixed and applied to cover a waste pile. The cover will harden to minimize water infiltration, wind blown ... | 06/11/1996 |
| 5391245 | Fire-resistant building component A method of, and compositions for, the making of a fire-resistant door core assembly. Doors produced from the door core assemblies. In the making of a door core assembly, an aqueous slurry containing gypsum cement and diatomaceous earth is prepared. The s... | 02/21/1995 |
| 5387282 | Structural cementitious composition and method of manufacturing the same A structural article of manufacture having a specific gravity less than about 1.5, composed of a compressed, dry cementitious composition comprising a particulate aggregate substantially free from particles smaller than about minus 80 mesh.... | 02/07/1995 |
| 5336318 | Clay-free, asbestos-free and glass microbubble-free drying type joint compounds A clay-free, asbestos-free and glass microbubble-free, drying type Joint compound containing an in-situ or associative thickener as a substitute for asbestos and any clay substitute therefor. In particular, these drying type joint compounds contain no att... | 08/09/1994 |
| 5294255 | Pumpable backfill grout A pumpable backfill grout which hardens into a controlled low strength material and an additive for making up such a backfill grout. The grout consists essentially of portland cement, a smooth surfaced vesicular expanded perlite, fly ash, fine aggregate, ... | 03/15/1994 |
| 5290355 | Roofing shingle composition, method of formulation, and structure A formula of lightweight aggregates, fiber, and Portland Cement, which, when graded, prepared and mixed as described produces a lightweight, fire and thermal resistive concrete which can be successfully and easily extruded into shapes for use in construct... | 03/01/1994 |
| 5264257 | Glass composite sheathing board An insulating board is provided in which the capacity to absorb the moisture exemplified by wood fiber based board, cellulose fiber based board and perlite based board is coupled with the high permeability of fiberglass insulation to provide a board havin... | 11/23/1993 |
| 5256222 | Lightweight building material board A lightweight wallboard having a density in the range of 10 pcf to 30 pcf and comprised of a faced layer of expanded siliceous inorganic particles, such as expanded perlite, bonded together by inorganic binder, such as sodium silicate. The board is made b... | 10/26/1993 |
| 5188889 | Inorganic board and method of manufacture thereof An inorganic board having excellent dimensional stability and excellent insulating properties comprises a pair of surface layers consisting of a hardened mixture of 30 to 60% by weight of cement, 30 to 60% by weight of a silica-containing material, 0 to 1... | 02/23/1993 |
| 5174819 | Composite material and method An improved composite material is prepared by first uniformly mixing cement and perlite fines. The perlite fines comprise particles that are less than 200 mesh. The mixture of perlite fines and cement is then mixed with water, formed into a desired shaped... | 12/29/1992 |
| 5167710 | Process for manufacturing a cement mixture containing reinforcing fibers and products obtained therefrom Process for making a cement mixture containing fibers wherein a paste is formed by mixing cement and, per 100 parts by weight of cement, approximately 5 to 20 parts by weight of a first pulverized material of which the grains have an average diameter of b... | 12/01/1992 |
| 5114617 | High strength structural perlite concrete A high strength concrete particularly useful for precast, prestressed products comprising by weight of the wet concrete mix, 8 to 60 percent cement, 0.5 to 20 percent smooth-surfaced, vesicular, expanded perlite, 5 to 30 percent water, 0 to 12 percent poz... | 05/19/1992 |
| 5108679 | Process for the production of concrete building products A process for the production of concrete roofing products of reduced weight loading having a thickness in section of not greater than 15 mm. The process involves forming an asbestos-free cementitious composition comprising (i) lightweight aggregate, (ii) ... | 04/28/1992 |
| 5080022 | Composite material and method An improved composite material is prepared by first uniformly mixing cement and perlite fines. The perlite fines comprise particles that are less than 200 mesh. The mixture of perlite fines and cement is then mixed with water, formed into a desired shaped... | 01/14/1992 |
| 5076986 | Process for manufacturing a composite material A process for manufacturing composite materials of high quality whatever be the respective amount, proportion and kind of constituents used in the starting mixture which comprises a binder made of two components capable of reacting with each other, at lea... | 12/31/1991 |
| 4963191 | Cementing compositions There are disclosed high temperature refractory mixes especially adapted for relining and resizing chimney flues, comprising from 65 to 70 weight percent of portland cement, from 21 to 25 weight percent of volcanic glass, from 6 to 10 weight percent of mi... | 10/16/1990 |
