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United States Gypsum Company patents


Recent patent applications related to United States Gypsum Company. United States Gypsum Company is listed as an Agent/Assignee. Note: United States Gypsum Company may have other listings under different names/spellings. We're not affiliated with United States Gypsum Company, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "U" | United States Gypsum Company-related inventors


 new patent  Methods for analyzing respirable particles in bulk materials

Provided is a method for detecting respirable participles in a bulk material comprising particles. The method comprises: analyzing morphology of the particles; analyzing chemical composition of the particles; creating a profile of the particles, wherein each particle in the profile is characterized by its shape, size and chemical composition; selecting... United States Gypsum Company

Gypsum slurry application modifier

A gypsum slurry modifier device is provided for use with a gypsum mixer outlet boot having at least one tubular outlet leg, and includes a support bracket mountable to the outlet boot; at least one clamp member associated with the support bracket and constructed and arranged for engaging the at... United States Gypsum Company

Gypsum wallboard comprising laminated multi-ply paper cover sheets bonded with a non-ionic polymeric binder and methods

Provided are wallboard panels comprising laminated multi-ply paper cover sheets bonded with a non-ionic polymeric binder and a cross-linker, and methods for making the wallboard panels.... United States Gypsum Company

Light weight gypsum board

This invention provides low dust low density gypsum wallboard products having high total core void volumes, corresponding to low densities in the range of about 10 to 30 pcf. The wallboards have a set gypsum core formed between two substantially parallel cover sheets, the set gypsum core preferably having a... United States Gypsum Company

Nonwoven joint tape having low moisture expansion properties and using same

The invention is directed to a joint tape for finishing a joint between boards comprising a nonwoven substrate that does not swell substantially in the presence of water. The invention further provides a method of finishing a joint between boards comprising (i) applying a joint tape of the invention to... United States Gypsum Company

Slurry distribution system with vibration isolation

A cementitious slurry mixing and dispensing system includes a slurry mixer that agitates and forms aqueous cementitious slurry, a discharge conduit in communication with the mixer and forming an interior surface defining a slurry flow path to convey the slurry therethrough to an outlet, a distribution mat disposed proximally to... United States Gypsum Company

Gypsum wallboard and related methods and slurries

Disclosed is a gypsum board comprising a set gypsum core disposed between two cover sheets. The set gypsum core is formed from a slurry comprising stucco, water, and at least one pregelatinized starch having a viscosity of from about 20 cP to about 300 cP as measured according to the... United States Gypsum Company

Construction adhesive compositions

A construction adhesive composition comprises between about 10 weight percent (wt. %) and about 30 wt. % of a vinyl acrylic latex, between about 30 wt. % and about 65 wt. % of calcium carbonate, and a surfactant.... United States Gypsum Company

System and manufacturing cementitious boards with on-line slurry set measurement

Embodiments of a system and a method for measuring cementitious board during its continuous manufacture can be used online in a continuous manufacturing process to effectively determine the degree to which cementitious slurry has set (e.g., expressed as percent hydration) at a predetermined location, such as, near a cutting station,... United States Gypsum Company

Pourable compositions

The invention provides a pourable composition comprising calcium sulfate hemihydrate; optionally, cement; one or more anionic surfactants selected from alkyl anionic surfactants, alkyl ether anionic surfactants, alkyl aryl anionic surfactants, and combinations thereof; one or more set accelerator additives; and water.... United States Gypsum Company

Gypsum slurries with linear polycarboxylate dispersants

A gypsum slurry includes water, a hydraulic component including calcium sulfate hemihydrate and a linear polycarboxylate dispersant. The linear polycarboxylate anionic dispersant includes a first monomeric repeating unit and a second monomeric repeating unit. The first repeating unit of the linear polycarboxylate dispersant is an olefinic unsaturated carboxylic acid repeating... United States Gypsum Company

Continuous ready mix joint treatment and texture product production

A continuous ready mix joint or texture compound manufacturing system and a method for continuously manufacturing a ready mix joint or texture compound includes a continuous mixer having an inlet and an outlet, a pump disposed at the outlet of the continuous mixer, and a disperger having an inlet and... United States Gypsum Company

Mat-faced board

Disclosed is an improved facer mat for use as a cover sheet for gypsum board. Also disclosed are gypsum boards containing such mat facers on one or both major surfaces of the board (face and back sides when installed), a method of manufacturing such board, and a method of making... United States Gypsum Company

Method for preparing mat-faced board

Disclosed is an improved facer mat for use as a cover sheet for gypsum board. Also disclosed are gypsum boards containing such mat facers on one or both major surfaces of the board (face and back sides when installed), a method of manufacturing such board, and a method of making... United States Gypsum Company

Drywall trim piece or tape attached with heated adhesive

A trim strip assembly is provided for use on a corner formed by at least two sheets of drywall. The trim strip assembly includes a trim strip body extending along a body axis that may extend longitudinally, and the trim strip body may have at least one inside surface 18.... United States Gypsum Company

Formable corner finishing and trim strip

A formable trim strip for use in connection with drywall applications includes two or more layers, including a trim strip body and a backing paper. The trim strip body extends along a body axis and has a top surface and a bottom surface. The trim strip body comprises a polymer... United States Gypsum Company

Gypsum panels and methods

Provided are wallboards in which gypsum core is adhered to a paper cover sheet with an adhesive. Wallboards with laminated paper cover sheets in which an inner water-absorbent cover sheet is adhered to the outer paper cover sheet are provided as well. Methods for making these wallboards are provided as... United States Gypsum Company

System and evaluating joint compound specimen

Embodiments of a system and a method for evaluating a joint compound specimen can be used to determine a numerical sandability value for the specimen. A moving assembly is configured to move a sanding member in a sanding direction relative to the joint compound specimen supported in a support fixture.... United States Gypsum Company

Alternative core material based vacuum insulated panels

A vacuum insulated panel (VIP) and a method of manufacturing a VIP includes a rigid core material having high insulation and low conductivity properties. The rigid core may be made of an inorganic material that effectively mimics a porous silica core material. The core material includes large particles of an... United States Gypsum Company

Slurry distributor, using same

A slurry distribution system can include a feed conduit and a distribution conduit in fluid communication therewith. The feed conduit can include a first feed inlet and a second feed inlet disposed in spaced relationship thereto. The distribution conduit can extend generally along a longitudinal axis and include an entry... United States Gypsum Company

Constrictor valve with webbing, cementitious slurry mixing and dispensing assembly, and making cementitious product

A constrictor valve can be associated with a conduit in fluid communication with a mixer to control a flow of cementitious slurry discharged from the mixer through the conduit. The constrictor valve can include a constrictor housing, a webbing constriction assembly, and a drive mechanism. The webbing constriction assembly includes... United States Gypsum Company

Lightweight, reduced density fire rated gypsum panels

A reduced weight, reduced density gypsum panel that includes high expansion vermiculite with fire resistance capabilities that are at least comparable to (if not better than) commercial fire rated gypsum panels with a much greater gypsum content, weight and density.... United States Gypsum Company

Dimensionally stable geopolymer composition and method

A method for making geopolymer cementitious binder compositions for cementitious products such as concrete, precast construction elements and panels, mortar, patching materials for road repairs and other repair materials, and the like is disclosed. The geopolymer cementitious compositions of some embodiments are made by mixing a synergistic mixture of thermally... United States Gypsum Company

Dimensionally stable geopolymer composition and method

A method for making geopolymer cementitious binder compositions for cementitious products such as concrete, precast construction elements and panels, mortar and repair materials, and the like is disclosed. The geopolymer cementitious compositions of some embodiments are made by mixing a synergistic mixture of thermally activated aluminosilicate mineral, calcium aluminate cement,... United States Gypsum Company

Slurry distribution system and method

A slurry distributor for use in a continuous manufacturing process includes an inlet opening and a shaped duct adapted to receive a flow of slurry provided at the inlet opening. The shaped duct has a parabolic guide surface adapted to redirect the flow of slurry. An outlet opening in fluid... United States Gypsum Company

Freeze-thaw durable geopolymer compositions and methods for making same

A freeze-thaw durable, dimensionally stable, geopolymer composition including: cementitious reactive powder including thermally activated aluminosilicate mineral, aluminate cement preferably selected from at least one of calcium sulfoaluminate cement and calcium aluminate cement, and calcium sulfate selected from at least one of calcium sulfate dihydrate, calcium sulfate hemihydrate, and anhydrous calcium... United States Gypsum Company

Method and system for on-line blending of foaming agent with foam modifier for addition to cementitious slurries

Disclosed is a method and system for blending a foam modifier with foaming agent online, e.g., as may be particularly useful for gypsum or cement slurries. The foam modifier comprises a fatty alcohol that is added to a gypsum or cement slurry that includes foaming agent, such as an alkyl... United States Gypsum Company

Low weight and density fire-resistant gypsum panel

An about ⅝ inch to ¾ inch thick low weight, low density gypsum panel with fire resistance capabilities sufficient to provide a Thermal Insulation Index of at least 17.0 minutes which when subjected to U419 test procedures will not fail for at least 30 minutes and, in selected embodiments, also... United States Gypsum Company

System and manufacturing cementitious boards with on-line board measurement

Embodiments of a system and a method for continuously measuring cementitious board during the continuous manufacture thereof can be used in connection with the manufacture of various cementitious products, including gypsum wallboard, for example. Embodiments of a system and a method for continuously measuring cementitious board during its continuous manufacture... United States Gypsum Company

Freeze-thaw durable geopolymer compositions and methods for making same

A freeze-thaw durable, dimensionally stable, geopolymer composition including: cementitious reactive powder including thermally activated aluminosilicate mineral, aluminate cement preferably selected from at least one of calcium sulfoaluminate cement and calcium aluminate cement, and calcium sulfate selected from at least one of calcium sulfate dihydrate, calcium sulfate hemihydrate, and anhydrous calcium... United States Gypsum Company

Water-resistant gypsum products and methods

This invention relates to water-resistant gypsum products manufactured with water-based emulsions comprising polymerizable siloxane compound and an anionic polyacrylamide; and methods for making a water-resistant gypsum product, comprising a step of preparing a water-based siloxane emulsion in a turbine emulsifier.... United States Gypsum Company

Light weight gypsum fiber panel suitable for use as roof cover board

A roof cover board made from a mixture of 30-60% stucco; 20-50% perlite; 10-30% cellulose fiber; 3-20% starch; and siloxane. Also disclosed is a stucco-free roof cover board made from a mixture of 30-60% perlite, 30-60% cellulose fiber, 5-25% starch; and siloxane. Also disclosed are methods for making same.... United States Gypsum Company

System and producing mold-resistant paper with wet scrubber assembly

Embodiments of a system and a method for preparing mold-resistant paper comprising a wet scrubber assembly in fluid communication with at least one collection plenum disposed at an operational area of a paper manufacturing line. The wet scrubber assembly can be operated to draw a stream of exhaust air from... United States Gypsum Company

Dry joint compound in a graduated container for accurate water addition

A joint compound container including a base member having a sidewall and a bottom wall defining an interior space with an open top end where a surface of the sidewall includes an indicator. A cover is attached to the top end of the base member and a designated amount of... United States Gypsum Company

Foam modifiers for gypsum slurries, methods, and products

Disclosed is a foam modifier, e.g., useful for gypsum or cement slurries. The foam modifier comprises a fatty alcohol that is added to a gypsum or cement slurry that includes foaming agent, such as an alkyl sulfate surfactant. The fatty alcohol can be a C6-C16 fatty alcohol in some embodiments.... United States Gypsum Company

04/06/17 / #20170096369

Foam modifiers for gypsum slurries, methods, and products

Disclosed is a foam modifier, e.g., useful for gypsum or cement slurries. The foam modifier comprises a fatty alcohol that is added to a gypsum or cement slurry that includes foaming agent, such as an alkyl sulfate surfactant. The fatty alcohol can be a C6-C16 fatty alcohol in some embodiments.... United States Gypsum Company

03/23/17 / #20170081562

Drywall joint tape with dual purpose adhesive backing

A joint tape to be applied to wallboard is provided and includes a base substrate having opposing sides. In certain embodiments, a first adhesive layer is applied to one of the sides of the base substrate and a second adhesive layer is applied to the first adhesive layer, where the... United States Gypsum Company

03/23/17 / #20170081842

Acoustical gypsum wallboard

This invention provides acoustical building panels and methods for imparting the acoustical property to wallboard with help of a compliant coating.... United States Gypsum Company

03/16/17 / #20170073143

Package for delivery of additives for powdered compositions

A joint compound system is provided including a main container of base joint compound; and an additive container isolated from the base joint compound and housing at least one and preferably multiple additive packages constructed and arranged so that the additive packages are protected from exposure to moisture prior to... United States Gypsum Company

03/16/17 / #20170073272

Pregelatinized starch with mid-range viscosity, and product, slurry and methods related thereto

Disclosed are product (e.g., panels), slurry, and methods relating to a pregelatinized starch having a mid-range viscosity (i.e., from about 20 centipoise to about 700 centipoise), and an extruded pregelatinized starch.... United States Gypsum Company

03/09/17 / #20170065950

Slurry mixer gate having enhanced extractor ports

A discharge gate is provided for delivering a mixed slurry from a gypsum slurry mixer, and includes a first extractor port configured for generating a first density slurry for a first gypsum layer, and a second extractor port configured for generating a second density slurry for a second gypsum layer.... United States Gypsum Company

03/09/17 / #20170066946

Enhanced adhesive composition for re-enforcing joints in gypsum panel construction

This invention provides flexible adhesive compositions which can be used instead of joint reinforcement tape for securing a joint seam between abutting panels. Methods using the compositions are provided as well.... United States Gypsum Company

02/16/17 / #20170044062

Fluorescent building product and related detection method

A method of making an identifiable gypsum-based building product, includes incorporating a suitable amount of an optically identifiable marker into the product to be sensed by a conventional detecting device; applying the product with the marker in a conventional manner in the course of building construction, creating a finished building... United States Gypsum Company

02/16/17 / #20170045399

System and manufacuring cementitious boards with on-line void detection

Embodiments of a system and a method for detecting voids in a cementitious board can be used in connection with the manufacture of products, including cementitious board products such as gypsum wallboard, for example. Such systems and methods can be used to generate numerical void measurements based upon a series... United States Gypsum Company

02/02/17 / #20170030076

Gypsum wallboard with reinforcing mesh

A wallboard panel is provided, including a sheet of face paper, a first layer of gypsum composition having a first density, a web of mesh associated with the first layer of gypsum composition, a second layer of gypsum composition having a second density, the second density being lower than the... United States Gypsum Company

01/26/17 / #20170022104

Apparatus and methods for producing gypsum wallboard

An apparatus for production of a gypsum product is provided which comprises a conveyer comprising a conveyer belt and means for rotating the conveyer belt; means for forming a gypsum product; and at least one laser scanner positioned over the conveyer belt at the location where the scanner scans at... United States Gypsum Company








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