Calcium Sulfate (e.g., Gypsum, Anhydrite, Plaster Of Paris, Etc.) Patents (Class 106/772)
  • Patent number: 11078128
    Abstract: A composition for weed control and fertilizer comprising iron hydroxyl ethylenediaminetriacetic acid, fertilizer mineral supplement, feed grade urea, a natural-based wetting agent, molasses desugarized solubles, and water, and may further comprise glycerin and/or preservatives, are provided. Methods for weed control and fertilization of plants comprising the steps of providing a composition comprising an effective amount of iron hydroxyl ethylenediaminetriacetic acid, fertilizer mineral supplement, feed grade urea, natural-based wetting agent, and molasses desugarized solubles, and applying an effective amount of the composition to soil or a plant or a weed, are also provided.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: August 3, 2021
    Assignee: One Earth Organics, LLC
    Inventor: Bradley T. Wolfe
  • Patent number: 11072562
    Abstract: A cement-based tile formed from a mixture comprising: a cement in the range of about 0.1 to 88% by wet weight percent; a secondary material in the range of about 0.1 to 50% by wet weight percent, the secondary material comprising limestone, sand, silica sand, gypsum, silica fume, fumed silica, Plaster of Paris, calcium carbonate, fly ash, slag, rock, or a combination thereof; a reinforcement fiber in the range of about 0.5 to 20% by wet weight percent, the reinforcement fiber comprising cellulose fiber, glass fiber, plastic fiber, polypropylene fiber, polyvinyl alcohol (PVA) fiber, homopolymer acrylic fiber, alkali-resistant fiber, or a combination thereof; a rheology modifying agent in the range of about 0.5 to 10% by wet weight percent; a water in the range of 10 to 60% of a total wet material weight; and wherein the mixture is extruded or molded to form the cement-based tile.
    Type: Grant
    Filed: January 20, 2020
    Date of Patent: July 27, 2021
    Assignee: The Intellectual Gorilla GmbH
    Inventors: Per Just Andersen, Evan R. Daniels
  • Patent number: 11028017
    Abstract: The invention relates to screed mixtures, comprising an inorganic binder, processing additives and drying additives. Self-levelling floor screeds according to the invention can be produced from these screed mixtures, said self-levelling floor screeds drying much more quickly than self-levelling floor screeds with the same composition, but which contain no drying additives.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: June 8, 2021
    Assignee: KNAUF GIPS KG
    Inventors: Sabrina Friedrich, Matthias Büttner
  • Patent number: 10899663
    Abstract: A process for producing a modified fly ash comprising the steps of providing, as a raw material, the raw fly ash discharged from a pulverized coal combustion boiler; classifying the raw fly ash into a crude powder and a fine powder; removing the unburned carbon contained in the crude powder by heating the crude powder at a temperature in a range of 500 to 1000° C.; and mixing together the crude powder from which the unburned carbon has been removed and the fine powder to obtain a modified fly ash.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: January 26, 2021
    Assignee: TOKUYAMA CORPORATION
    Inventors: Kohei Omura, Takuya Seki, Hiroyoshi Kato
  • Patent number: 10737981
    Abstract: A gypsum-based composition of calcium sulfate hemihydrate with (a) alum and calcium carbonate and/or (b) zeolite and sodium percarbonate for making foamed gypsum slurry. A method to make foamed gypsum slurry from the composition. A method to make foamed gypsum product from the composition. A cavity wall having a cavity filled with the foamed gypsum product.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: August 11, 2020
    Assignee: UNITED STATES GYPSUM COMPANY
    Inventors: Samar Emami, Salvatore C. Immordino, Robert H. Negri, David D. Pelot, Jeffrey F. Grussing, Juan Carlos Ruiz Castañeda, Christopher R. Nelson, John Jason Roxburgh, Srinivas Veeramasuneni
  • Patent number: 10731343
    Abstract: A plasterboard comprises a gypsum matrix having a polymeric additive distributed therein in an amount of at least 1 wt % relative to the gypsum, the gypsum matrix further having a first group of fibres and a second group of fibres embedded therein, wherein the fibres of the first group of fibres have an average length that is at least three times the average length of the fibres of the second group of fibres.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: August 4, 2020
    Assignee: Saint-Gobain Placo SAS
    Inventors: Laura Brooks, Nicola Jupp, Joanna Sparkes, Elodie Taboulot, Adam Richardson, Nicholas Jones, Jan Rideout
  • Patent number: 10633283
    Abstract: A method for treating and utilizing bypass dusts from a cement production process involves a) contacting the bypass dust with an aqueous phase and mixing the same to obtain a suspension, wherein water-soluble components of the bypass dust are dissolved in the aqueous phase; b) performing a solid/liquid separation, in particular a vacuum filtration or a filter press filtration, to separate the solids contained in the suspension, wherein a brine remains; c) precipitating a partial amount of the heavy metals present in the brine, and optionally Ca, and separating the precipitate from the brine; and d) subjecting the brine to an electrocoagulation, wherein a flocculate containing the heavy metals remaining in the brine is separated.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: April 28, 2020
    Assignee: Holcim Technology, Ltd.
    Inventors: Serge Lukas Zihlmann, Florian Christian Gross
  • Patent number: 10544579
    Abstract: Construction panels and other materials, methods for their manufacture, and systems and methods for monitoring environmental conditions with such panels are provided herein. The panels include a core having a first surface and an opposed second surface, and an environmental sensor assembly associated with the panel and configured to detect an environmental condition of the panel and wirelessly communicate data on the environmental condition to a reader.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: January 28, 2020
    Assignee: Georgia-Pacific Gypsum LLC
    Inventors: Charles R. Harrison, Lawrence Gollob, Clarence A. Shelton, Stuart Brandon Gilley, Timothy R. Fierbaugh
  • Patent number: 10486392
    Abstract: Gypsum panels, methods for their manufacture, and systems and methods for monitoring environmental conditions with such panels are provided herein. The panels include a gypsum core having a first surface and an opposed second surface, a first facer material associated with the first surface of the gypsum core, and an environmental sensor assembly associated with the gypsum panel and configured to detect an environmental condition of the gypsum panel and wirelessly communicate data on the environmental condition to a reader.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: November 26, 2019
    Assignee: Georgia-Pacific Gypsum LLC
    Inventors: Charles R. Harrison, Lawrence Gollob, Clarence A. Shelton, Stuart Brandon Gilley
  • Patent number: 10400452
    Abstract: Construction panels and other materials, methods for their manufacture, and systems and methods for monitoring environmental conditions with such panels are provided herein. The panels include at least one environmental sensor assembly associated with a panel core and configured to detect an environmental condition of the panel comprising moisture, pressure, or both, and wirelessly communicate data on the environmental condition to a reader.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: September 3, 2019
    Assignee: Georgia-Pacific Gypsum LLC
    Inventors: Charles R. Harrison, Lawrence Gollob, Clarence A. Shelton, Stuart Brandon Gilley, Timothy R. Fierbaugh
  • Patent number: 10246378
    Abstract: Methods of manufacturing composites are provided, including combining dihydrate calcium sulfate whiskers, hemihydrate calcium sulfate stucco, and water to form a slurry, and setting the slurry to form a composite having a natural porosity of about 60 volume percent or greater. Composites are also provided, including dihydrate calcium sulfate whiskers and dihydrate calcium sulfate crystals, and having a natural porosity of about 60 volume percent or greater.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: April 2, 2019
    Assignee: Georgia-Pacific Gypsum LLC
    Inventors: Mianxue Wu, Jeffery T. Fields, Sara E. Endres
  • Patent number: 10240089
    Abstract: A composite product includes gypsum in an amount of 60 to 90% by weight, fibers in an amount of 1.5 to 26% by weight substantially homogeneously distributed through the composite, and a rheology-modifying agent in an amount of 0.5 to 6% by weight. The composite is caused or allowed to cure to form a cured composite. The cured composite is a fire resistant component used in a fire-rated door core, a fire-rated door or a fire-rated building panel. The fire resistant component may include a building panel, a door panel, a door core, a door rail, a door stile, a door lock block, a door border, or a door insert.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: March 26, 2019
    Assignee: The Intellectual Gorilla GmbH
    Inventors: Evan R. Daniels, Jonathan Newton
  • Patent number: 10161138
    Abstract: An artificial stone building tile and method. Disclosed is an artificial stone building tile and a method of making the building tile. The building tile has a low density and significant flexibility, and is nailable without cracking. It is made by layers of cement formulations separated by layers of metal mesh. Color batches of cement are prepared and placed in the bottom of a mold, with the color batches becoming the visible face of the building tile.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: December 25, 2018
    Inventor: Jacob Caval
  • Patent number: 10155360
    Abstract: Gypsum panels, methods for their manufacture, and systems and methods for monitoring environmental conditions with such panels are provided herein. The panels include a gypsum core having a first surface and an opposed second surface, a first facer material associated with the first surface of the gypsum core, and an environmental sensor assembly associated with the gypsum panel and configured to detect an environmental condition of the gypsum panel and wirelessly communicate data on the environmental condition to a reader.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: December 18, 2018
    Assignee: Georgia-Pacific Gypsum LLC
    Inventors: Charles R. Harrison, Lawrence Gollob, Clarence A. Shelton, Stuart Brandon Gilley
  • Patent number: 10151104
    Abstract: Construction panels and other materials, methods for their manufacture, and systems and methods for monitoring environmental conditions with such panels are provided herein. The panels include a core having a first surface and an opposed second surface, and an environmental sensor assembly associated with the panel and configured to detect an environmental condition of the panel and wirelessly communicate data on the environmental condition to a reader.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: December 11, 2018
    Assignee: Georgia-Pacific Gypsum LLC
    Inventors: Charles R. Harrison, Lawrence Gollob, Clarence A. Shelton, Stuart Brandon Gilley, Timothy R. Fierbaugh
  • Patent number: 9950956
    Abstract: This invention relates to the use, in a foamy aqueous suspension of calcium sulfate hemihydrate, as an agent having the dual function of being a dispersing agent and an anti-defoaming agent, of a comb polymer made up of (meth)acrylic acid, a monomer which is an alcoxy- or hydroxy-polyalkylene glycol, and an ester of (meth)acrylic acid. It also relates to the aqueous suspensions thereby formed, and the plasterboard manufactured from 2 sheets of paper containing a body resulting from the drying of said suspensions.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: April 24, 2018
    Assignee: COATEX
    Inventors: Jean-Marc Suau, Yves Kensicher
  • Patent number: 9878950
    Abstract: A liquid accelerator composition for accelerating the setting reaction of calcium sulfate hemihydrate and water and methods of forming a liquid gypsum accelerator are provided. The liquid accelerator composition includes a liquid media in which calcium sulfate dihydrate is less than fully soluble and a ground product of a mill grinding of a mixture comprising calcium sulfate dihydrate.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: January 30, 2018
    Assignee: National Gypsum Properties, LLC
    Inventors: Chris Fewox, Joseph J. Bailey
  • Patent number: 9718254
    Abstract: A gypsum board comprises a cover sheet and a gypsum layer disposed on the cover sheet. The gypsum layer comprises the reaction product of an isocyanate, water, and stucco. The isocyanate increases the moisture resistance of the gypsum board. A method of manufacturing the gypsum board comprises the steps of combining the isocyanate, the water, and the stucco to form a slurry, and applying the slurry to a cover sheet to form the gypsum layer on the cover sheet.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: August 1, 2017
    Assignee: BASF SE
    Inventors: Rajesh Kumar, Sridhar Iyer, Christopher Tanguay, Daniel Niedzwiecki
  • Patent number: 9623586
    Abstract: A method of preparing a reduced weight, reduced density gypsum panel that includes high expansion vermiculite with fire resistance that meet or exceed one or more industry standard fire tests.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: April 18, 2017
    Assignee: United States Gypsum Company
    Inventors: Qiang Yu, Srinivas Veeramasuneni, Weixin D. Song, Wenqi Luan
  • Patent number: 9375899
    Abstract: A composite product includes gypsum in an amount of 70 to 90% by weight, fibers in an amount of 1.5 to 26% by weight substantially homogeneously distributed through the composite, and a rheology-modifying agent in an amount of 0.5 to 6% by weight. The composite is caused or allowed to cure to form a cured composite. The cured composite is a fire resistant component used in a fire-rated door core, a fire-rated door or a fire-rated building panel. The fire resistant component may include a building panel, a door panel, a door core, a door rail, a door stile, a door lock block, a door border, or a door insert.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: June 28, 2016
    Assignee: THE INTELLECTUAL GORILLA GMBH
    Inventors: Evan R. Daniels, Jonathan Newton
  • Patent number: 9260349
    Abstract: The invention solves the problem of obtainment of binding agent for mass of shape constriction elements, consisting of the fact, that preferably calcium sulfate, preferably calcium oxide, preferably zinc oxide, are initially mixed in mechanical mixer, and after thorough mixing, the obtained dry mass shall be subjected to the effects of ultrasonic stationary wave. The binding agent for mass for production of shaped construction elements, in accordance with the invention, consists of 65-86% of weight, preferably of calcium sulfate, 15-35% of weight, preferably of calcium oxide and 0.1-0.7% of weight, preferably of zinc oxide.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: February 16, 2016
    Assignee: HCH SPOLKA ZO.O.
    Inventors: Andrzej Haintze, Jerzy Haintze
  • Patent number: 9039831
    Abstract: A non-aqueous drywall compound being the combination of a first component mixture of acetone, a non-aqueous liquid adhesive containing ethyl cyanoacrylate, and a powder containing calcium sulfate hemihydrate (plaster of Paris), the mixture being a pliable putty capable of adhering to gypsum wallboard or similar work surfaces. The second component of the drywall compound is an accelerator or activator containing acetone and toluene. The first component is applied to a defect in a work surface using a spreading tool and the second component is then applied to the exposed surface of the first component, such as by spraying or brushing, whereupon the drywall compound cures, hardens or sets within less than ten minutes to a state capable of being sanded into a smooth, hard surface and painted.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: May 26, 2015
    Inventor: Walter Trudeau
  • Patent number: 9027303
    Abstract: An aqueous gypsum plaster-cement composition comprises a hydraulic binder consisting of calcined gypsum and hydraulic cement in a weight ratio of from about 4:1 to about 2:1, an aggregate which comprises sand, a foam, a perlite, rice hulls or a mixture thereof, a superplasticizer comprising an air entraining agent, a retarder, and water in an amount of from about 0.4 to about 0.75 parts by weight per part of binder, with the proviso that the gypsum plaster-cement composition contains essentially neither a pozzolana nor lime. The use thereof, a method of constructing buildings using this composition and the buildings obtainable in this way are also described.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: May 12, 2015
    Assignee: Crupe International (IP) GmbH
    Inventors: Hubert Lichtinger, Bernd Bruno Winfried Eck
  • Publication number: 20150114268
    Abstract: The invention relates to a process for producing calcium sulphate dihydrate by reacting a water-soluble calcium compound with a water-soluble sulphate compound in the presence of water and a polymer containing acid groups, wherein the polymer containing acid groups comprises specific polyether groups. Additionally disclosed are calcium sulphate dihydrate producible by the process according to the invention, and the use thereof for production of gypsum plasterboard.
    Type: Application
    Filed: June 14, 2013
    Publication date: April 30, 2015
    Applicant: BASF Construction Solutions GmbH
    Inventors: Niklas Loges, Uwe Gehrig, Michael Schinabeck, Frank Dierschke, Michael Brau, Luc Nicoleau
  • Publication number: 20150096464
    Abstract: Provided herein are compositions and methods including hydraulic cement, supplementary cementitious material, and/or self-cementing material. Methods for making the compositions and using the compositions are provided.
    Type: Application
    Filed: December 8, 2014
    Publication date: April 9, 2015
    Inventors: Irvin CHEN, Miguel FERNANDEZ, Joshua PATTERSON, Martin DEVENNEY
  • Patent number: 8974597
    Abstract: The invention provides a set gypsum-containing product having increased resistance to permanent deformation and a method for preparing it comprising forming a mixture of a calcium sulfate material, water, and an appropriate amount of one or more enhancing materials chosen from condensed phosphoric acids, each of which comprises 2 or more phosphoric acid units; and salts or ions of condensed phosphates, each of which comprises 2 or more phosphate units. The mixture is then maintained under conditions sufficient for the calcium sulfate material to form a set gypsum material.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: March 10, 2015
    Assignee: United States Gypsum Company
    Inventors: Qiang Yu, Steven W. Sucech, Brent E. Groza, Raymond J. Mlinac, Frederick T. Jones, Paul J. Henkels
  • Publication number: 20150060070
    Abstract: Cement compositions and methods of making the same are provided. The composition comprises cement or lime, water and Lassenite, a pozzolanic strength retrogression inhibitor.
    Type: Application
    Filed: August 30, 2013
    Publication date: March 5, 2015
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Ramesh Muthusamy, Tushar Gosavi, Rahul Chandrakant Patil
  • Patent number: 8968465
    Abstract: A composition includes calcium sulfate hemihydrate, stearic acid, an accelerant, and a mixing solution. The composition can be injected, e.g., through a needle, and is capable of setting, e.g., in vivo, in a relatively short period of time to a relatively high hardness.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: March 3, 2015
    Assignee: Wright Medical Technology, Inc.
    Inventors: Jantzen Cole, Timothy Smith
  • Patent number: 8950928
    Abstract: A slurry quick-setting admixture comprising an alkaline earth metal carbonate, a water-soluble acidic substance, calcium aluminate, an alkali metal sulfate, and water; and a quick-setting cement concrete comprising such a slurry quick-setting admixture and cement concrete. The slurry quick-setting admixture may further contain calcium sulfate, calcium hydroxide and/or aluminum hydroxide, a retarder, etc. The spraying method comprises mixing water and a powder quick-setting admixture comprising an alkaline earth metal carbonate, a water-soluble acidic substance, calcium aluminate and an alkali metal sulfate, to form a slurry quick-setting admixture, mixing this slurry quick-setting admixture with cement concrete to form a quick-setting cement concrete, and spraying this quick-setting cement concrete.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: February 10, 2015
    Assignee: Danki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Yasuhiro Nakashima, Youhei Yamagishi, Shunichi Mishima, Isao Terashima
  • Publication number: 20140345497
    Abstract: A grinding process, in a grinding unit including a first shop including a first mill and a first separator, an outlet from the first mill being connected to an inlet of the first separator; a second shop including a second separator and a second mill, an outlet from the second separator being connected to an inlet of the second mill; the second separator being fed by the material coming from the first separator, wherein the first separator is operated at a tangential speed of 15 to 25 m/s and a radial speed of 3.5 to 5 m/s; and the second separator is operated at a tangential speed of 20 to 50 m/s and a radial speed of 2.5 to 4 m/s.
    Type: Application
    Filed: November 30, 2012
    Publication date: November 27, 2014
    Inventor: Didier Dumont
  • Patent number: 8864902
    Abstract: A cement clinker which can be sintered at 1,300 to 1,400° C. which is lower than the conventional sintering temperature and develops excellent strength characteristics such as mortar compression strength. The cement clinker has a total content of C3A and C4AF calculated by Bogue's formulas of 22 mass % or more, a C3S content calculated by Bogue's formula of 60 mass % or more and an iron modulus (I.M.) of 1.3 or less, preferably 1.0 to 1.3. Since the total content of C3A and C4AF is 22 mass % or more, the cement clinker can be sintered at a low temperature and the reduction of strength when a cement composition is cured can be prevented by reducing the iron modulus of the cement clinker.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: October 21, 2014
    Assignee: Tokuyama Corporation
    Inventors: Hiroshi Nagata, Akinori Nakamura, Hiroyoshi Kato, Takashi Chabayashi, Daihachi Kitayama
  • Patent number: 8808448
    Abstract: The method for applying a heat insulation layer to an area is characterized in that alpha-hemihydrate or beta-gypsum or lime-alpha-hemihydrate or a mixture thereof is mixed as hydraulic binder with a pore former consisting of aluminum powder, mixed with ground limestone, and citric acid with addition of water and is cast in liquid or pasty form onto the area. The mixture has a pH of 11.8 or more. The constituents are preferably mixed on site, namely in such a consistency that the mixture is self-leveling. Placement on the laying site can e.g. be carried out by means of a floor screed pump. The material expands to the desired total thickness, yielding a homogeneous insulation layer of uniform thickness and quality and of high strength that will reach its high final strength after about 24 hours. The material can also be applied in a pasty consistency to a wall.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: August 19, 2014
    Inventor: Antonius Mertens
  • Patent number: 8801852
    Abstract: A gypsum slurry is provided that includes calcium sulfate hemihydrate; water; a dispersant component comprising at least one of the following a comb-branched polymer with polyether side chains, naphthalene sulfonate-formaldehyde condensate or melamine sulfonate-formaldehyde condensate; a foaming agent; and a polycondensation component with three polycondensation repeating units. Also provided is a method for making a gypsum slurry with a foaming agent in which the ratio between the dispersant component and the polycondensation component is adjusted to control for the size of foam bubbles in the gypsum slurry. Gypsum products made from the gypsum slurry are provided and methods for making the products are provided as well.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: August 12, 2014
    Assignee: United States Gypsum Company
    Inventors: Chris C. Lee, Alfred C. Li, Richard J. Haszel, David R. Blackburn, James R. Wittbold, Brent Groza
  • Patent number: 8795429
    Abstract: A method of making a rapid setting lightweight homogeneous foamed fly ash based cementitious aggregate composition with improved compressive strength for products such as panels is disclosed. The method mixes fly ash, alkali metal salt of citric acid, foaming agent for entraining air, optional foam stabilizing agent, a calcium sulfate such as stucco or gypsum, and water. Compositions are also disclosed which include mixtures of fly ash, particularly Class C fly ash alone or in mixtures with Class F fly ash, alkali metal salts of citric acid, foaming agents, a calcium sulfate such as calcium sulfate dihydrate or hemihydrate and an optional portland cement.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: August 5, 2014
    Assignee: United States Gypsum Company
    Inventor: Marianela Perez-Pena
  • Patent number: 8793897
    Abstract: In a process for the continuous conditioning of gypsum plaster, the gypsum plaster is passed from a calcination facility connected upstream to a gypsum plaster cooler in the form of particles. In the gypsum plaster cooler, soluble calcium sulphate anhydrite is initially converted to calcium sulphate hemi-hydrate and calcium sulphate dihydrate to calcium sulphate hemi-hydrate, and crystal defects are eliminated. Subsequently, the gypsum plaster is brought into contact with ambient air and dehumidified by the latter and thereby simultaneously cooled indirectly.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: August 5, 2014
    Assignee: Grenzebach BSH GmbH
    Inventors: Alfred Brosig, Gunther Schafer
  • Patent number: 8784551
    Abstract: The present invention provides a bone cement formula having a powder component and a setting liquid component, wherein the powder component includes a calcium sulfate source and a calcium phosphate source with a weight ratio of the calcium sulfate source less than 65%, based on the total weight of the calcium sulfate source and the calcium phosphate source, and the setting liquid component comprises ammonium ion (NH4+) in a concentration of about 0.5 M to 4 M, wherein the calcium phosphate source includes tetracalcium phosphate (TTCP) and dicalcium phosphate in a molar ratio of TTCP to dicalcium phosphate of about 0.5 to about 2.5, and the calcium sulfate source is calcium sulfate hemihydrate (CSH), calcium sulfate dehydrate (CSD), or anhydrous calcium sulfate.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: July 22, 2014
    Assignee: National Cheng Kung University
    Inventors: Chien-Ping Ju, Jiin-Huey Chern Lin
  • Publication number: 20140144349
    Abstract: A cementitious composition including: a binder containing (a) 60-94%, by weight, of at least one pozzolanic material; (b) at least 0.5% calcium sulfoaluminate (CSA), by weight; (c) 1.2-11% by weight, expressed as SO3, of at least one inorganic sulfate selected from the group of sulfates consisting of a calcium sulfate hemihydrate, an anhydrous calcium sulfate, a calcium sulfate dihydrate, a sodium sulfate, and a sodium calcium sulfate; and (d) a total sulfate content of at least 3%, by weight, expressed as SO3, the cementitious composition including, at most, 3% natural lime, the cementitious composition including, at most, 10% alumina cement, the contents of the composition being calculated on a dry, aggregateless basis.
    Type: Application
    Filed: April 15, 2012
    Publication date: May 29, 2014
    Applicant: GREEN BINDER TECHNOLOGIES LTD
    Inventors: Alon Raz, Nechemia Masury
  • Publication number: 20140130708
    Abstract: Provided herein are compositions and methods including hydraulic cement, supplementary cementitious material, and/or self-cementing material. Methods for making the compositions and using the compositions are provided.
    Type: Application
    Filed: January 15, 2014
    Publication date: May 15, 2014
    Applicant: CALERA CORPORATION
    Inventors: IRVIN CHEN, MIGUEL FERNANDEZ, JOSHUA PATTERSON, MARTIN DEVENNEY
  • Publication number: 20140123878
    Abstract: 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: Application
    Filed: March 16, 2012
    Publication date: May 8, 2014
    Applicant: ECOLOOP GmbH
    Inventors: Thomas Stumpf, Ulf Boenkendorf, Leonhard Baumann, Roland Möller
  • Patent number: 8702881
    Abstract: A method of preparing a reduced weight, reduced density gypsum panel that includes high expansion vermiculite with fire resistance that meet or exceed one or more industry standard fire tests.
    Type: Grant
    Filed: November 5, 2012
    Date of Patent: April 22, 2014
    Assignee: United States Gypsum Company
    Inventors: Qiang Yu, Srinivas D. Veeramasuneni, Weixin D. Song, Wenqi Luan
  • Patent number: 8691007
    Abstract: 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: Grant
    Filed: September 20, 2012
    Date of Patent: April 8, 2014
    Assignee: Georgia-Pacific Gypsum LLC
    Inventors: Susnata Samanta, Hubert Francis
  • Patent number: 8673071
    Abstract: This method relates to making a joint compound that includes predispersing a dedusting agent in water to make a predispersed dedusting agent. Dry components, including at least one filler, are combined to make a dry mixture. Process water is pumped into a vessel and the predispersed dedusting agent is introduced to the vessel. The dry mixture is then added to the vessel and all components are blended to make a homogeneous product.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: March 18, 2014
    Assignee: United States Gypsum Company
    Inventors: Salvatore C. Immordino, Jr., Ronald E. Schenck, Charles Miller
  • Patent number: 8657952
    Abstract: A composition includes calcium sulfate hemihydrate, stearic acid, an accelerant, and a mixing solution. The composition can be injected, e.g., through a needle, and is capable of setting, e.g., in vivo, in a relatively short period of time to a relatively high hardness.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: February 25, 2014
    Assignee: Wright Medical Technology, Inc.
    Inventors: Jantzen Cole, Timothy Smith
  • Publication number: 20140041553
    Abstract: CO2-sequestering formed building materials are provided. The building materials of the invention include a composition comprising a carbonate/bicarbonate component. Additional aspects of the invention include methods of making and using the CO2-sequestering formed building material.
    Type: Application
    Filed: October 16, 2013
    Publication date: February 13, 2014
    Applicant: CALERA CORPORATION
    Inventors: BRENT R. CONSTANTZ, ANDREW YOUNGS, TERENCE C. HOLLAND
  • Patent number: 8642346
    Abstract: 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: Grant
    Filed: June 1, 2011
    Date of Patent: February 4, 2014
    Assignee: United States Gypsum Company
    Inventors: Salvatore C. Immordino, Jr., Brett R. Link, Charles J. Miller, Guy L. Rosenthal, Richard B. Stevens, Lee K. Yeung
  • Patent number: 8636841
    Abstract: A cement manufacturing apparatus capable of increasing quantity of fly ash used in the apparatus while controlling unburned carbon content in cement within a permissible range. The cement manufacturing apparatus comprises a removal means for removing unburned carbon from gypsum, and a grinding means for grinding gypsum from which unburned carbon is removed by the removal means together with clinker to generate cement. With the apparatus, total unburned carbon content in cement can be reduced, and the quantity of fly ash used in the apparatus can be, increased by the reduced amount of unburned carbon. The removal means can remove unburned carbon contained in gypsum as well as unburned carbon contained in fly ash, and the grinding means may grind the fly ash from which unburned carbon is removed together with the gypsum, from which unburned carbon is removed, and clinker.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: January 28, 2014
    Assignee: Taiheiyo Cement Corporation
    Inventors: Tomomichi Nakamura, Yukinori Sakamoto, Tsuyoshi Matsura
  • Publication number: 20130340652
    Abstract: A cement clinker which can be sintered at 1,300 to 1,400° C. which is lower than the conventional sintering temperature and develops excellent strength characteristics such as mortar compression strength. The cement clinker has a total content of C3A and C4AF calculated by Bogue's formulas of 22 mass % or more, a C35 content calculated by Bogue's formula of 60 mass % or more and an iron modulus (I.M.) of 1.3 or less, preferably 1.0 to 1.3. Since the total content of C3A and C4AF is 22 mass % or more, the cement clinker can be sintered at a low temperature and the reduction of strength when a cement composition is cured can be prevented by reducing the iron modulus of the cement clinker.
    Type: Application
    Filed: April 17, 2012
    Publication date: December 26, 2013
    Applicant: TOKUYAMA CORPORATION
    Inventors: Hiroshi Nagata, Akinori Nakamura, Hiroyoshi Kato, Takashi Chabayashi, Daihachi Kitayama
  • Patent number: 8597426
    Abstract: A panel is provided that includes stucco, water and a dispersant component having dispersing properties and comprising a comb-branched polymer with polyether side chains, naphthalene sulfonate-formaldehyde condensate or melamine sulfonate-formaldehyde condensate. A polycondensation component is also included in the slurry that includes three repeating units. A method of making the gypsum panel includes combining stucco, water and a first dosage of a first dispersant to form a slurry, the first. A second dosage of a second dispersant is added to the slurry. Properties of the gypsum slurry are tested and it is formed into a product. The product sets and properties of the product are identified. The first dosage or the second dosage is changed based on the properties of the slurry or product.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: December 3, 2013
    Assignee: United States Gypsum Company
    Inventors: Chris C. Lee, Alfred C. Li, Richard J. Haszel, David R. Blackburn, James R. Wittbold, Brent Groza
  • Patent number: 8580055
    Abstract: Provided herein are mixtures, emulsions and other additives for use in manufacturing gypsum wallboard. The mixtures and emulsions may be wax-based emulsions or wax-free mixtures or emulsions, with wax-based emulsions including water; at least one wax, a dispersant which may include sulfur or a sulfur-containing group, and a particular wetting agent or surfactant. Mixtures may also be prepared including water, a dispersant, and a particular wetting agent or surfactant. Gypsum slurries may be prepared using such emulsions and mixtures.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: November 12, 2013
    Assignee: Henry Company LLC
    Inventors: Jonathan Stuart, Dennis Michael Mahoney, Ariel Lender, Norman Davies
  • Patent number: 8551242
    Abstract: A method of servicing a wellbore in a subterranean formation, comprising preparing a cement composition comprising water and a cementitious material, wherein the cementitious material further comprises blast furnace slag, vitrified shale, calcium sulfate hemi-hydrate or combinations thereof, and placing the cement composition in the wellbore. A cement composition comprising water and a cementitious material, wherein the cementitious material further comprises blast furnace slag, vitrified shale, calcium sulfate hemi-hydrate or combinations thereof. A cement composition comprising water and a cementitious material, wherein the cementitious material further comprises blast furnace slag.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: October 8, 2013
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Lance E. Brothers, Anthony Palmer