Soil, Diatomaceous Earth, Clay, Slate Or Shale Containing, Or Material For Treating Soil Or Earth (e.g., Soil Stabilization, Etc.) Patents (Class 106/773)
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Patent number: 11332414Abstract: A particle is provided that includes 5 wt % to 90 wt % of agricultural biomass, combustion residues, biosolids, or a combination thereof. A binder intermixed with the agricultural biomass, combustion residues, biosolids, or a combination thereof retains the mixture in the form of a particle. The resultant particle creates a use for existing waste streams while also improving soil quality. A process of stabilizing agricultural biomass, combustion residues, biosolids, or a combination thereof particles is also provided that includes combining agricultural biomass, combustion residues, biosolids, or a combination thereof with mineral and/or synthetic chemical fragments having a bulk density of greater than about 40 pounds per cubic foot and a sizing of about 100% passing through a 30 mesh screen and about 50% or more passing through a 200 mesh screen. By adding binder, a particle is formed that is deodorized and/or stabilized.Type: GrantFiled: March 14, 2011Date of Patent: May 17, 2022Assignee: THE ANDERSONS, INC.Inventors: Charles W. Anderson, Timothy D. Birthisel
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Patent number: 10287210Abstract: A process for manufacturing pellets includes providing a first supply of a first material and a second supply of a binder including a second material in respective storage units. The first supply of the first material is mixed in a counter-current mixer with the second supply of the binder and water to produce a plurality of pellets. The mixing occurs simultaneously with pelletizing in the mixer. The plurality of pellets are discharged from the mixer.Type: GrantFiled: December 7, 2015Date of Patent: May 14, 2019Assignee: KERCHER ENTERPRISES, INC.Inventors: Edwin C. Kercher, Michael A. DiNovo, Joshua S. Long
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Patent number: 9914670Abstract: Disclosed is a process for making a water-soluble granule enriched in humic acid. Disclosed also is a water-soluble granule enriched in humic acid. Such a granule is useful as an organic aid to crop growth, particularly in applications where solubility is desirable or necessary.Type: GrantFiled: June 13, 2015Date of Patent: March 13, 2018Inventor: Kevin Merritt
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Patent number: 9790248Abstract: Methods for converting waste streams from the wood pulping industry to high-value surfactants are described. For example, isolated lignin and lignosulfonate or waste streams containing lignin and lignosulfonate can be directly converted to surfactants, or they can be first converted to methylol derivatives and treated with further reagents to produce surfactants.Type: GrantFiled: February 19, 2015Date of Patent: October 17, 2017Assignee: Empire Technology Development LLCInventor: Georgius Abidal Adam
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Patent number: 9382153Abstract: The invention provides a calcium sulphate-based product comprising a phosphate as additive for increased fire resistance. Particularly preferred phosphate additives may be those containing aluminum or ammonium ions.Type: GrantFiled: November 23, 2011Date of Patent: July 5, 2016Assignee: Saint Gobain Placo SASInventors: Robin Daniel Fisher, Jan Rideout
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Patent number: 8986445Abstract: The invention is directed to a construction material and to the use of modified layered inorganic material. The construction material of the invention comprises a layered inorganic material, which layered inorganic material comprises an ionic organic modifier compound and a biocide. The construction material of the invention has increased resistance against microbial fouling.Type: GrantFiled: June 4, 2010Date of Patent: March 24, 2015Assignee: Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek TNOInventors: Jacobus Eversdijk, Karin Tempelaars, Rudolf Hartmut Fischer
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Patent number: 8932402Abstract: Hydraulic binder comprising: at least one first calcium aluminosilicate derivative with a fineness of less than 6000 Blaine, slag microparticles with a fineness of greater than or equal to 6000 Blaine in an amount of between 1 and 35% of the total weight of the binder, preferably of between 5 and 15%, at least one source of calcium sulphate and at least one base in an amount of less than or equal to 1% of the total weight of the binder.Type: GrantFiled: October 27, 2010Date of Patent: January 13, 2015Assignee: Saint-Gobain WeberInventors: Frank Hesselbarth, Udo Dudda
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Publication number: 20140130715Abstract: Compositions and methods for producing a manufactured product, a method for making a liquid absorbent, and processes for disposal of flammable liquids with a flue gas desulfurization by-product. The compositions for the manufactured products combine a binder and the by-product. The composition contains a greater percentage by weight of the by-product than the binder. The methods for producing manufactured products include dewatering the gypsum-depleted waste stream to reduce a water content, and forming the manufactured product. The method for making a liquid absorbent includes dewatering, granulating, drying, heating, and packaging a granulated gypsum-depleted composition as the liquid absorbent. The processes for disposal of flammable liquids include distributing a by-product into contact with flammable liquid, absorbing the liquid, transporting, and igniting the flammable liquid. The artificial soils are a combination of by-product and animal waste, human waste, or another bio-solid.Type: ApplicationFiled: January 20, 2014Publication date: May 15, 2014Applicant: Utter Technology LLCInventor: Terry D. Utter
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Publication number: 20140123878Abstract: The invention relates to a process for the production of binders by calcinating mineral raw material mixtures. In order to improve the process and the quality of the binders, it is proposed that oil shale and/or oil sand fills are converted by targeted agglomeration into particles of a certain size and consistency, wherein the water content for the mechanical stabilization of the agglomerate is adjusted to less than 25 percent and the agglomerates are calcinated to form binders at temperatures between 800 and 1500° C. under reductive conditions over the entire process with a Lambda value <1 in a vertical shaft furnace with updraft gasification. The binding properties are adjusted by the targeted addition of CaO-containing substances and/or existing sulfur fractions of the oil sands and/or oil shales are bound by means of the CaO that is present in the starting material and/or added.Type: ApplicationFiled: March 16, 2012Publication date: May 8, 2014Applicant: ECOLOOP GmbHInventors: Thomas Stumpf, Ulf Boenkendorf, Leonhard Baumann, Roland Möller
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Patent number: 8691007Abstract: A wallboard, a method of preparing a wallboard, and a method of making a gypsum slurry to prepare a wallboard are provided. The wallboard includes a set gypsum dihydrate derived substantially from a non-fibrous form of calcium sulfate and selected from the group consisting of anhydrous gypsum and gypsum hemihydrate. The wallboard also includes an aerogel dispersed in the gypsum dihydrate.Type: GrantFiled: September 20, 2012Date of Patent: April 8, 2014Assignee: Georgia-Pacific Gypsum LLCInventors: Susnata Samanta, Hubert Francis
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Patent number: 8642346Abstract: At least one of these or other problems is reduced using a building material that is uniquely identifiable. A method of making an identifiable gypsum-based building product includes selecting a tagging material occurring naturally in a component of the building material and choosing a carrier substance having a high concentration of the tagging material. By selecting an amount of the carrier substance and adding it to the building material, a building product having a unique product characteristic is created. In a second embodiment of the invention, a second tagging material is combined with the first tagging material to create a unique product. In yet another embodiment of the invention, a supplemental amount of the tagging material is added to the gypsum-based composition in addition to the carrier substance. Some tagging materials are useful in a gypsum-based composition to produce a visual confirmation of the presence of the tagging material.Type: GrantFiled: June 1, 2011Date of Patent: February 4, 2014Assignee: United States Gypsum CompanyInventors: Salvatore C. Immordino, Jr., Brett R. Link, Charles J. Miller, Guy L. Rosenthal, Richard B. Stevens, Lee K. Yeung
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Patent number: 8529691Abstract: A joint filler composition may include 100 parts by mass of a base material, 1 to 20 parts by mass of inorganic hollow particles, and 3 to 20 parts by mass of a mineral having a chain structure or a layer structure.Type: GrantFiled: April 23, 2012Date of Patent: September 10, 2013Assignee: Yoshino Gypsum Co., Ltd.Inventor: Tsuyoshi Goto
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Publication number: 20130196061Abstract: Fiber-containing composite particles and fiber-reinforced barrier matrix compositions made from them are disclosed. The composite particles include a core, a hydratable clay mineral layer, an optional protective coating, and a reinforcing fiber. The fiber may be present in any or all of several locations: adhered to the core, dispersed in the hydratable layer or in the protective coating. Upon hydration, the hydratable clay mineral layer swells and forms a matrix that cohesively holds the fibers and the core in a fiber-reinforced barrier matrix composition.Type: ApplicationFiled: October 7, 2011Publication date: August 1, 2013Applicant: AQUABLOK, LTD.Inventor: John H. Hull
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Patent number: 8444787Abstract: Provided are methods and systems for introducing a wet gypsum accelerator or other high viscosity production additive to an aqueous dispersion of calcined gypsum in a discharge apparatus downstream of a stucco mixer in which the dispersion was prepared. These methods and systems are useful in the production of various gypsum products such as board including wallboard and ceiling tiles.Type: GrantFiled: August 11, 2011Date of Patent: May 21, 2013Assignee: United States Gypsum CompanyInventors: James R. Wittbold, W. David Song
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Patent number: 8337612Abstract: Disclosed are a system, a method and/or composition of environment friendly composite construction material. In one aspect, a method includes providing a mixture of a pozzolanic material and/or a kaolin clay with an activator solution to form an alumino-silicate cementitious material through a resulting geo-polymerization process. The alumino-silicate cementitious material is in the form of a paste. The method also includes processing the alumino-silicate cementitious material to transform the alumino-silicate cementitious material that is in the form of the paste to a form of a powder of the alumino-silicate cementitious material. The method further includes mixing the alumino-silicate cementitious material which is in the form of the powder with water to control a workability of the alumino-silicate cementitious material.Type: GrantFiled: August 12, 2011Date of Patent: December 25, 2012Assignee: King Abdulaziz City for Science and TechnologyInventors: Mohd Mustafa Al Bakri Abdullah, Mohammed A Binhussain, Kamarudin Hussin, Mohd Ruzaidi Ghazali, Norazian Mohammed Noor, Mohammad Tamizi Selimin
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Publication number: 20120192768Abstract: An embodiment includes a method of servicing a well bore. The method may comprise introducing a lost circulation composition into a lost circulation zone, the lost circulation composition comprising hydraulic cement, nano-particles, amorphous silica, clay, and water. The method further may comprise allowing the lost circulation composition to set in the lost circulation zone. Another embodiment includes a lost circulation composition. The lost circulation may comprise hydraulic cement, nano-particles, amorphous silica, clay, and water.Type: ApplicationFiled: April 11, 2012Publication date: August 2, 2012Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Krishna Ravi, Rahul Chandrakant Patil, Sandip Prabhakar Patil, Sairam KS Pindiprolu, Craig Roddy, Ricky Convington, Jiten Chatterji, D. Chad Brenneis
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Publication number: 20120171772Abstract: At least one of these or other problems is reduced using a building material that is uniquely identifiable. A method of making an identifiable gypsum-based building product includes selecting a tagging material occurring naturally in a component of the building material and choosing a carrier substance having a high concentration of the tagging material. By selecting an amount of the carrier substance and adding it to the building material, a building product having a unique product characteristic is created. In a second embodiment of the invention, a second tagging material is combined with the first tagging material to create a unique product. In yet another embodiment of the invention, a supplemental amount of the tagging material is added to the gypsum-based composition in addition to the carrier substance. Some tagging materials are useful in a gypsum-based composition to produce a visual confirmation of the presence of the tagging material.Type: ApplicationFiled: June 1, 2011Publication date: July 5, 2012Inventors: Salvatore C. Immordino, JR., Brett R. Link, Charles J. Miller, Guy L. Rosenthal, Richard B. Stevens, Lee K. Yeung
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Publication number: 20120094139Abstract: Kaolin clay pigments which contain a minor amount of gypsum provide improved properties of brightness, opacity and bulking to coated sheets.Type: ApplicationFiled: December 20, 2011Publication date: April 19, 2012Inventor: Zhenzhong Zhang
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Patent number: 8105433Abstract: It is an object of the invention to provide a cement admixture that can form concrete having a sufficient self-healing capability and satisfactorily maintaining its self-healing capability for prolonged periods. The cement admixture of the invention contains an expanding material and an alumina-silicate with swelling properties. The cement admixture is combined with cement to form a cement composition. The cement composition is mixed with water and an aggregate to provide concrete with an excellent self-healing capability.Type: GrantFiled: February 13, 2009Date of Patent: January 31, 2012Assignees: The University of Tokyo, National University Corporation Yokohama National University, East Japan Railway CompanyInventors: Toshiharu Kishi, Tae-Ho Ahn, Akira Hosoda, Kaoru Kobayashi
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Patent number: 8016960Abstract: Provided are methods and systems for introducing a wet gypsum accelerator or other high viscosity production additive to an aqueous dispersion of calcined gypsum in a discharge apparatus downstream of a stucco mixer in which the dispersion was prepared. These methods and systems are useful in the production of various gypsum products such as board including wallboard and ceiling tiles.Type: GrantFiled: April 27, 2005Date of Patent: September 13, 2011Assignee: United States Gypsum CompanyInventors: James R. Wittbold, W. David Song
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Publication number: 20110048286Abstract: A method of making a cementitious composition comprises (a) selecting at least one pozzolanic particulate material; (b) selecting and grinding at least one feldspar material to a fineness of at least 3000 Blaine; (c) mixing calcium oxide or calcium hydroxide with gypsum; (d) mixing the ground feldspar with the lime-gypsum mixture to produce an activator; (e) conditioning the pozzolanic particulate material with an aqueous solution; (f) adding the activator to the conditioned material to produce a slurry; and (g) curing the slurry in a sealed container. The pozzolanic particulate material can be slag, fly ash, or siliceous rock. A cementitious composition of the invention comprises a pozzolanic particulate material, a ground feldspar material, a lime compound and gypsum, and uses readily available materials, as an economic replacement for Portland cement, fly ash or other materials in filling, backfilling and paving, particularly for backfilling or stabilizing mine sites.Type: ApplicationFiled: February 24, 2009Publication date: March 3, 2011Inventor: Allen Pratt
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Publication number: 20100175590Abstract: A joint compound system includes a set-inhibited, pre-wetted, setting-type, ready-mix joint compound and a set initiator. The set-inhibited, pre-wetted, setting-type joint compound includes a ready-mixed, setting-type joint compound base with a calcium-free phosphate set preventing agent that impedes chemical hydration of a gypsum component of the setting-type joint compound. The joint compound base is free of calcium carbonate. The set initiator includes alum to reinitiate the chemical hydration reactions.Type: ApplicationFiled: November 19, 2009Publication date: July 15, 2010Inventors: Richard B. Stevens, Charles J. Miller
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Patent number: 7608347Abstract: An improved gypsum slurry that includes water, calcium sulfate hemihydrate, a polycarboxylate dispersant and a modifier. The modifier is chemically configured to improve the efficacy of the polycarboxylate dispersant. Preferred modifiers include cement, lime, slaked lime, soda ash, carbonates, silicates and phosphates.Type: GrantFiled: June 9, 2006Date of Patent: October 27, 2009Assignee: United States Gypsum CompanyInventors: Dennis M. Lettkeman, Michael P. Shake, Qingxia Liu, John W. Wilson, Brian Randall, David R. Blackburn
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Publication number: 20090260544Abstract: Disclosed embodiments relate to well treatment fluids and methods that utilize nano-particles. Exemplary nano-particles are selected from the group consisting of particulate nano-silica, nano-alumina, nano-zinc oxide, nano-boron, nano-iron oxide, and combinations thereof. Embodiments also relate to methods of cementing that include the use of nano-particles. An exemplary method of cementing comprises introducing a cement composition into a subterranean formation, wherein the cement composition comprises cement, water and a particulate nano-silica. Embodiments also relate to use of nano-particles in drilling fluids, completion fluids, simulation fluids, and well clean-up fluids.Type: ApplicationFiled: April 20, 2009Publication date: October 22, 2009Applicant: Halliburton Energy Services, Inc.Inventors: Craig W. Roddy, Jiten Chatterji, Roger Cromwell
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Publication number: 20080196630Abstract: This invention relates to a novel process and composition for treating the surface of an ABS or other polymer sheet so that it will accept watercolor paints. More particularly, this invention involves using a series of adhesive ground compounds to modify the surface of the ABS polymer or other sheet so that it becomes water absorbent to a certain degree. A method of treating the surface of a polymer so that it is acceptable for watercolor pigments comprising: (a) roughening the surface of the polymer; (b) applying a layer of a mixture of soft gel gloss and kaolin clay to the roughened surface and allowing it to dry; (c) applying a second layer of soft gel gloss and kaolin clay mixture to the first layer of soft gel gloss and kaolin clay mixture and allowing it to dry; and (d) applying a layer of absorbent watercolor ground to the kaolin clay layer.Type: ApplicationFiled: February 13, 2008Publication date: August 21, 2008Inventors: Douglas Enns, Floyd Armstrong
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Three-Dimensional Printing Material System With Improved Color, Article Performance, and Ease of Use
Publication number: 20080187711Abstract: A materials system and methods are provided to enable the formation of articles by three dimensional printing. The materials system includes particulate mixtures having a whitening agent and a solid particulate additive comprising an acid, the latter adapted for modifying a cure rate of an infiltrant. The materials system also includes aqueous fluids including optical brightening agents.Type: ApplicationFiled: January 10, 2008Publication date: August 7, 2008Applicant: Z CorporationInventors: Amir Alam, James F. Bredt, Nanette Clark, Mary Flynn, Jean Sprauer, Derek X. Williams -
Patent number: 7285166Abstract: 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.Type: GrantFiled: May 11, 2005Date of Patent: October 23, 2007Assignee: Halliburton Energy Services, Inc.Inventors: Karen Luke, B. Raghava Reddy, Russell M. Fitzgerald, Frank Zamora, Glen C. Fyten, Keith A. Rispler, Donald A. Getzlaf, Dennis W. Gray, Sears T. Dealy
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Patent number: 7097706Abstract: The object of this invention is to provide a non-calcined clay composite used as building materials capable of promoting humans' health and being desirably used irrespective of location, which is improved in terms of strength without calcining clay. Because the non-calcined clay composite is produced without calcining clay, the process of producing it is simplified and its productivity is improved. The non-calcined clay composite includes 50 to 90 wt % clay, 2 to 30 wt % lime, 4 to 48 wt % blast furnace slag, 0.04 to 0.9 wt % alkaline chemical, and water as a balance, and has high compression strength due to an ionic coagulation reaction, a pozzolan reaction, and a latent hydraulic reaction.Type: GrantFiled: April 14, 2003Date of Patent: August 29, 2006Assignee: G Plus Co., Ltd.Inventors: Hee-Yong Choi, Hey-Zoo Hwang, Min-Chol Cho, Tae-Sung Park, Yu-Son Chu
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Patent number: 7070647Abstract: 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 to 35 parts by weight of a phosphate, 2 to 30 parts by weight of gypsum and 0.005 to 7 parts by weight of a hydroxycarboxylic acid or a ketocarboxylic acid.Type: GrantFiled: February 21, 2001Date of Patent: July 4, 2006Assignee: National Institute for Rural EngineeringInventors: Shinsaku Fujimori, Shigeji Kobori
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Patent number: 7045008Abstract: 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 particles generated when sanding the hardened joint compound. Airborne dust reducing additives include oils, surfactants, solvents, waxes, and other petroleum derivatives. The additive can be added to conventional ready-mixed joint compounds and to setting type joint compounds. A method of reducing the quantity of airborne dust generated when sanding a fully hardened joint compound includes mixing a sufficient quantity of the dust reducing additive with the joint compound prior to when the joint compound has been applied to the wall.Type: GrantFiled: September 17, 2003Date of Patent: May 16, 2006Assignee: 3M Innovative Properties CompanyInventor: Nathaniel P. Langford
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Patent number: 6989057Abstract: 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.Type: GrantFiled: December 10, 2002Date of Patent: January 24, 2006Assignee: Halliburton Energy Services, Inc.Inventors: Donald A. Getzlaf, Karen Luke, Keith A. Rispler, Russell M. Fitzgerald, Glen C. Fyten
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Publication number: 20040107877Abstract: 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.Type: ApplicationFiled: December 10, 2002Publication date: June 10, 2004Applicant: Halliburton Energy Services, Inc.Inventors: Donald A. Getzlaf, Karen Luke, Keith A. Rispler, Russell M. Fitzgerald, Glen C. Fyten
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Patent number: 6739806Abstract: The present invention provides cement compositions comprising an improved fluid loss control additive, and methods for cementing in a subterranean formation using such cement compositions. The cement compositions comprise a hydraulic cement, water, and a fluid loss control additive comprising at least two polymers connected by a pH-sensitive crosslink. Optionally, other ingredients may be included in the compositions.Type: GrantFiled: June 13, 2003Date of Patent: May 25, 2004Assignee: Halliburton Energy Services, Inc.Inventors: Michael J. Szymanski, Larry S. Eoff, John Michael Wilson, Samuel J. Lewis
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Patent number: 6740395Abstract: 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 initiator, e.g. aluminum sulfate, preferably present on the surface of the substrate.Type: GrantFiled: December 21, 2001Date of Patent: May 25, 2004Assignee: United States Gypsum CompanyInventors: John D. Halm, Aida L. Carbo, Michael R. Lynn, Richard B. Stevens, Charles J. Miller, Peter M. Attard, Therese A. Fults
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Publication number: 20040007163Abstract: The present invention provides methods, lightweight well cement compositions and additives for the well cement compositions. The methods of the invention for sealing pipe in a well bore penetrating a zone or formation which readily fractures at low hydrostatic pressure is basically comprised of the steps of providing a lightweight cement composition comprised of a hydraulic cement, water and an additive comprising an aqueous suspension of microspheres containing a water swellable clay suspending agent, placing the cement composition in the annulus between the pipe and the well bore and allowing the cement composition to set.Type: ApplicationFiled: June 25, 2003Publication date: January 15, 2004Inventors: Lance E. Brothers, Krista L. Keener, James A. Braden, Jan Pieter Vijn, Bach Dao
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Patent number: 6676746Abstract: The quantity of dust generated by a sandable wall repair compound is reduced by adding a dust reducing additive to the compound. Dust reducing additives include oil, wax, and mixtures thereof. Dust reducing additives containing oil may include rheological and polar additives to minimize the bleeding of the oil into substrates to which the wall repair compound is applied.Type: GrantFiled: June 1, 2001Date of Patent: January 13, 2004Assignee: 3M Innovative Properties CompanyInventor: Nathaniel P. Langford
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Publication number: 20030230217Abstract: A clay plaster formulation and application. The clay plaster is a mixture of various clays, and aggregate. This plaster is both functional and decorative and is for use on new and existing construction.Type: ApplicationFiled: June 17, 2003Publication date: December 18, 2003Inventor: Armin Croft Elsaesser
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Patent number: 6641660Abstract: The present invention provides stable well cementing methods and compositions for sealing subterranean zones penetrated by well bores. The improved thermally stable and degradation resistant well cement compositions are basically comprised of a hydraulic cement, sufficient water to form a pumpable slurry, an aqueous hydrogenated styrene-butadiene rubber latex and a latex stabilizer present in an amount sufficient to stabilize the hydrogenated styrene-butadiene latex.Type: GrantFiled: November 13, 2002Date of Patent: November 4, 2003Assignee: Halliburton Energy Services, Inc.Inventors: Jiten Chatterji, Roger S. Cromwell, Bobby J. King, Darrel C. Brenneis, Ronald J. Crook
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Patent number: 6641658Abstract: 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.Type: GrantFiled: July 3, 2002Date of Patent: November 4, 2003Assignee: United States Gypsum CompanyInventor: Ashish Dubey
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Patent number: 6616753Abstract: 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 form a slurry and a rapidly acting thixotropy providing gelling agent, and allowing the sealing composition to remain at rest in the zone whereby the sealing composition rapidly gels and then sets into a hard impermeable mass therein.Type: GrantFiled: December 11, 2001Date of Patent: September 9, 2003Assignee: Halliburton Energy Services, Inc.Inventors: B. Raghava Reddy, Karen Luke
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Publication number: 20030121661Abstract: 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 form a slurry and a rapidly acting thixotropy providing gelling agent, and allowing the sealing composition to remain at rest in the zone whereby the sealing composition rapidly gels and then sets into a hard impermeable mass therein.Type: ApplicationFiled: December 11, 2001Publication date: July 3, 2003Inventors: B. Raghava Reddy, Karen Luke
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Patent number: 6572698Abstract: 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-products, such as fly ash, and has an Al2O3 content greater than 5% by weight. Blast furnace slag is present in an amount less than 35% by weight, and cement kiln dust, in an amount of from 1 to 20% by weight, is added to the mixture as an activator.Type: GrantFiled: January 2, 2001Date of Patent: June 3, 2003Assignee: International Mineral Technology AGInventor: Suz-Chung Ko
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Patent number: 6475275Abstract: 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 to apply cement compositions need not be cleaned every night when used on a construction site.Type: GrantFiled: October 21, 1999Date of Patent: November 5, 2002Assignee: Isolatek InternationalInventors: Edward Nebesnak, Robert Ostertog
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Patent number: 6406535Abstract: 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 component, 0.01 to 3 wt. % of a color pigment, and 1 to 5 wt. % of fibers for plaster. In preparing the wallboard, after preparing the mixture, an appropriate amount of water is added to the mixture to mix together, which is applied onto a substrate. Then, the surface of the mixture on the substrate is finished, followed by drying to thereby form the constructional finished board.Type: GrantFiled: September 14, 2000Date of Patent: June 18, 2002Assignee: Takachiho Corp.Inventor: Masahiro Shintome
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Patent number: 6379455Abstract: 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). Monofilament fibers can also be included in the mix.Type: GrantFiled: July 20, 2000Date of Patent: April 30, 2002Assignee: Road Building International (Barbados) LimitedInventor: Josy Cohen
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Patent number: 6299970Abstract: 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 superior mechanical properties and/or fire resistance, including screw-holding capacities in excess of 650 lbs.Type: GrantFiled: May 19, 1999Date of Patent: October 9, 2001Assignee: Georgia-Pacific Gypsum CorporationInventors: Turner W. Richards, Hubert C. Francis, George F. Fowler
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Patent number: 6200380Abstract: 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 least substantially continuously blended.Type: GrantFiled: February 16, 1999Date of Patent: March 13, 2001Assignee: National Gypsum CompanyInventors: Ronald S. Finkelstein, Jashbhai M. Patel
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Patent number: 6197107Abstract: The present invention is of a cementitious composition containing OPC, calcined gypsum, a source of amorphous silica and a source of amorphous alumina. The ratio of calcium sulfate hemihydrate to OPC is 0.7:1.0 to 1.4:1.0, the ratio of amorphous silica and amorphous alumina to OPC is 0.26:1.0 to 0.4:1.0, and the ratio of amorphous alumina to amorphous silica is 0.3:1.0 to 1.5:1.0. The cementitious composition, by itself and mixed with aggregates, is fast-setting and exhibits good early compressive strength and very high compressive strength after hydration. Despite the high content of calcium sulfate relative to prior art OPC formulations, the cementitious composition according to the present invention is essentially waterproof and exhibits excellent strength characteristics, even after 2 years under water. The use of calcined gypsum in place of alumina cement or even OPC is of great economic advantage, and in addition, provides the cementitious composition with quick-setting characteristics.Type: GrantFiled: March 30, 2000Date of Patent: March 6, 2001Assignee: M. Gold Investments (1999) Ltd.Inventors: Elisha Stav, Meir Gamliel Goldgraber
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Patent number: 6168424Abstract: An installation for quick thermal treatment of suspended powder substances, in particular for flash calcining of mineral substances, comprises modules advantageously arranged in mobile units including elements for supplying powder substances, a combustion chamber wherein the substances are introduced suspended in a hot air flux and a cooling assembly where the calcined substances are recuperated to pre-heat the combustion air. The substances are pneumatically transported in the heated air downstream of the supplying elements, via a pre-heating device up to the combustion chamber.Type: GrantFiled: December 30, 1999Date of Patent: January 2, 2001Assignee: Demeter TechnologiesInventors: Gilbert Raynaud, Olivier Pons, Pierre Valmalette, Sylvain Salvador
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Patent number: 6162288Abstract: 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 causing the composition to swell or shrink or to cause a salt layer to form on the composition when it is spray-applied. The fireproofing composition can retain fluidity in conventional spray hoses overnight and yet is capable of being injected with a set accelerator, such as aluminum sulfate, on the next day or on a successive day when spray-applied onto a substrate.Type: GrantFiled: May 19, 1999Date of Patent: December 19, 2000Assignee: W. R. Grace & Co.-Conn.Inventors: Lawrence J. Kindt, Dennis M. Hilton, Richard P. Perito