United States Gypsum Company

Usg Interiors, Inc.

Knauf Gips Kg

Rafael Bury

Robert H Negri

Pamela L Hargrove

Mark Miklosz

Peder John Gulbrandsen

Samuel D Hulka

Qingxia Liu

Michael Patrick Shake

William A Frank

Xuming Wang

David Paul Miller

Paul W Reed

Lee K Yeung

Michael Lawrence Bolind

Tyler Kincaid

Kevin W Moyer, Jr

Donghong Li

Dick C Engbrecht

Erin Dugan

Donald L Roelfs

Qinghua Li

Jeffrey William Donelan

Yanfei Peng

David D Pelot

Aaron St James

Bernie St James

Jeffrey Samuel Zunk

David J Pekarcik

Elliott St James

Naveen Punati

Juan Ignacio Huitzil

Joseph W Schlude

Kevin W Moyer

Liu Qingxia

Kevin W Moyer Jr

Paul Reed

Xuming Dept Of Metallurgical Engineering Wang

A method of making a setting type compound by injecting an activator compound into a plaster compound wherein the activator compound tube is coaxial and within the plaster compound tube, each at the same flowrate, the same pressure and the same viscosity. The cross sectional transverse areas of an annulus containing the plaster compound and the hole in the annulus containing the activator compound are the same.

Method of making a sprayable setting type compound

Gypsum boards formed from synthetic gypsum and other gypsum sources having high chloride salt concentrations. Gypsum boards may include a board core including set gypsum between a front cover sheet and a back cover sheet. A total concentration of the chloride anion in the board core ranges from about 150 to 4000 parts by weight (pbw) chloride, typically about 300 to about 3000 pbw, more typically from about 400 to about 2000 pbw, further typically from about 1000 to about 2000 pbw, and further typically from about 600 to about 1000 pbw, per 1,000,000 pbw calcium sulfate dihydrate. A polymer layer contacts an inner surface of the back cover sheet. A densified gypsum layer contacts an inner surface of the front cover sheet. Methods of making the gypsum board, and a wall system for employing the gypsum boards, are also provided.

Gypsum board from gypsum having high level of chloride salt and a polymer layer and methods associated therewith

Spackling and joint compounds with lower shrinkage, better sanding, and fast drying. Methods for repairing walls and ceiling in which the present spackling compound is applied to a variety of substrates, including wallboard, plaster and/or wood. Methods for finishing seams in wall construction in which the spackling/joint compound is used for finishing the seams.

Low shrinkage, fast drying spackling or joint compound

Mat-faced cementitious board including: (a) a cementitious core; (b) a fibrous mat having an inner first surface facing at least one face of the cementitious core, and an outer second surface, wherein the inner first surface and the outer second surface are opposed; (c) a hydrophobic, non-setting coating resulting from applying to the outer second surface of the fibrous mat a layer of hydrophobic finish composition including: (i) about 50 to about 80 weight % non-setting, inorganic filler having a mean particle diameter of about 12 microns to about 35 microns, (ii) about 20% to about 50 weight % an aqueous dispersion of a film-forming polymer, (iii) 0% to about 30 weight % additional water; (iv) an absence of fly ash, (v) an absence of pozzolanic material, (vi) an absence of hydraulic cement, (vii) an absence of calcium sulfate hemihydrate, and (viii) an absence of calcium sulfate anhydrite.

Fly ash-free coating formulation for fibrous mat tile backerboard

A formulation for an acoustically transparent coating for use on an acoustical substrate comprising a water dispersible binder and relatively large filler particles, and characterized by a high pigment to volume concentration, high viscosity, high shear thinning, and fast drying to enable the formulation to be sprayed in droplets that retain their identity when in mutual contact and in a dry coating can be efficiently sanded flat.

Acoustically transparent sandable coating

A prefill tool for finishing wallboard joints is provided for finishing a wallboard joint, and includes a box assembly defining a hopper, having a top wall and a front wall constructed and arranged for engaging the wallboard joint. The front wall partially defines a gate dimensioned for dispensing joint compound stored in the hopper. Also, the gate is located on a skid plate mounted on the front wall, the skid plate having a main portion, and a gate portion partially defining the gate being displaced from a plane defined by the main portion.

Prefill tool for finishing wallboard joints

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.

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

A formulation for an acoustically transparent coating for use on an acoustical substrate comprising a water dispersible binder and relatively large filler particles, and characterized by a high pigment to volume concentration, high viscosity, high shear thinning, and fast drying to enable the formulation to be sprayed in droplets that retain their identity when in mutual contact.

Acoustically transparent coating

Provided is an adhesive composition suitable for fortifying panel joints in construction, the adhesive composition comprising a polymeric binder, filler and thickener, wherein the binder is selected from acrylic acid polymers, acrylic acid copolymers, alkyds, polyurethanes, polyesters, epoxies, and combinations thereof and wherein the viscosity of the composition is the range from 100 to 200 Brabender Units and density is in the range from about 7.5 lbs/gal to about 10 lbs/gal. Methods of using the adhesive composition in wall assembly are provided as well.

Joint finishing adhesive

Provided are compositions and methods for expeditious wall installation by spray-applying a joint compound comprising a polymeric binder and hollow spheres.

Spray-applied joint compound, wall assembly, and methods and products related thereto

Disclosed are aspects of board finishing systems. For example, in various aspects, disclosed are joint compound compositions, wall assemblies, methods of treating walls, and products related to any of the foregoing, including reinforcement trim, e.g., for protecting corners where boards meet, fasteners, and tape. The joint compound preferably is a drying type composition with reduced shrinkage property, and includes binder and hollow spheres, resulting in an ultra lightweight formulation in some embodiments. The joint compound composition can be applied in a one-coat treatment in preferred embodiments. Other aspects of board finishing system accommodate such a one-coat treatment to thusly allow a user to manipulate the compound closer to the plane of board as compared with conventional formulations. Joint tape and reinforcement trim can include non-swelling synthetic paper facing material in some embodiments.

Joint compound, wall assembly, and methods and products related thereto

A kit for assembling walls and ceilings is provided. The kit comprises at least two gypsum boards, each with at least one tapered edge, and a self-drying joint compound comprising a polymeric binder and hollow spheres. Methods for wall and ceiling installation are provided as well.

An acoustical panel for forming a monolithic ceiling or wall, the panel extending across a rectangular area, and having a core made primarily of gypsum, the core being essentially coextensive with the panel area such that it has two opposed sides, each of an area substantially equal to the area of the panel, the core having a multitude of perforations extending generally between its sides, the perforations being distributed substantially uniformly across the full area of the core and being open at both sides of the core, the face side of the core being covered by a porous layer, the perforations being optionally restricted at a rear side of the core, the porous layer at the face side of the core being suitable for adherence of drywall joint compound and a water-based non-blocking paint.

Gypsum-panel acoustical monolithic ceiling

Growing community of inventors

Wheeling, IL, United States of America

Rafael Bury