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| Number | Title | Issue Date |
| 8182652 | Method of making a coating and a coated acoustical panel using degraded fibers An acoustical panel is made by applying a thin, acoustically-transparent coating to an acoustical base mat. A pulp is made from one or more fillers, a fibrous filler, a binder and water. A thickener solution is prepared from a thickener and water. A portion of the p... | 05/22/2012 |
| 8080133 | Panels including renewable components and methods for manufacturing A panel includes about 0.1% to about 95% by weight of a renewable component. The panel has at least one of a CAC value of at least about 25, an NRC value of at least about 0.25 and an STC of at least about 25. A method for manufacturing such panels is also provided.... | 12/20/2011 |
| 8028803 | Molding a lightweight cast acoustical product A lightweight cast article that is made by the method of the present invention. A foamed acoustical product is prepared by blending a starch with cold water, then heating the starch/water blend to form a starch gel. Mineral wool is added to the starch gel to form a ... | 10/04/2011 |
| 7935223 | Panels including renewable components and methods for manufacturing A panel includes about 0.1% to about 95% by weight of a renewable component. The panel has at least one of a CAC value of at least about 25, an NRC value of at least about 0.25 and an STC of at least about 25. A method for manufacturing such panels is also provided.... | 05/03/2011 |
| 7887230 | Mixer having S-shaped paddles for mixing viscous materials A mixer is provided that is configured for attachment to a power tool for mixing a viscous material, and includes a shaft defining a shaft axis, and a plurality of paddles attached to the shaft and extending radially from the shaft. All of the paddles have generally... | 02/15/2011 |
| 7875358 | Slurry and acoustical panel with reduced bound water A composition for a slurry for manufacture of a building panel includes one or more fillers, one or more binders and water. One or more fillers is an expanded perlite at least partially covered with a film-forming, thermoplastic polymer coating Some embodiments use ... | 01/25/2011 |
| 7849652 | Suspended ceiling with measurement indicia A main tee member having a measurement indicia system for use with a suspended ceiling includes a support flange and a web extending upwardly from the support flange. The web has first and second sides and a plurality of receiving channels extending from the first s... | 12/14/2010 |
| 7803296 | Methods and systems for preparing gypsum slurry containing a cellulose ether A method for forming a gypsum slurry comprises the steps of combining gypsum and water to form a slurry, combining cellulose ether with at least a second material configured to delay solubilization of the cellulose ether, and adding the combined cellulose ether and ... | 09/28/2010 |
| 7803226 | Siloxane polymerization in wallboard Polymerization of siloxane is improved using a gypsum-based slurry that includes stucco, Class C fly ash, magnesium oxide and an emulsion of siloxane and water. This slurry is used in a method of making water-resistant gypsum articles that includes making an emulsio... | 09/28/2010 |
| 7789645 | Multi-layer process and apparatus for producing high strength fiber-reinforced structural cementitious panels A structural cementitious panel, produced by a multi-layer process including providing a moving web; b. one of depositing a first layer of loose fibers upon the web and c. depositing a layer of settable slurry upon the web; d. depositing a second layer of loose fibe... | 09/07/2010 |
| 7776462 | Gypsum products utilizing a two-repeating unit dispersant and a method of making them A gypsum slurry includes water, a hydraulic component including stucco and a polycarboxylate dispersant. The dispersant has two repeating units wherein the first repeating unit is an olefinic unsaturated mono-carboxylic acid repeating unit or an ester or salt, and t... | 08/17/2010 |
| 7776461 | Gypsum products utilizing a two-repeating unit dispersant and a method for making them A gypsum slurry includes water, a hydraulic component including stucco and a polycarboxylate dispersant. The dispersant has two repeating units wherein the first repeating unit is an olefinic unsaturated mono-carboxylic acid repeating unit or an ester or salt, and t... | 08/17/2010 |
| 7776170 | Fire-resistant gypsum panel A method of continuously forming a multilayer panel includes making a gypsum slurry, then dividing the gypsum slurry into at least a primary gypsum slurry and a secondary gypsum slurry. An additive slurry having water and an intumescent material is created, then add... | 08/17/2010 |
| 7767019 | Gypsum products utilizing a two-repeating unit dispersant and a method for making them A gypsum slurry includes water, a hydraulic component including stucco and a polycarboxylate dispersant. The dispersant has two repeating units wherein the first repeating unit is an olefinic unsaturated mono-carboxylic acid repeating unit or an ester or salt, and t... | 08/03/2010 |
| 7754007 | Gypsum mixtures for forming solids An example embodiment of a mixture to be employed in conjunction with water for preparing a slurry that hydrates to form a high strength flooring compound comprises about 50% to about 98% by weight calcium sulfate hemihydrate, about 0.002% to about 1% by weight poly... | 07/13/2010 |
| D618826 | Ceiling grid tee with uniform effective thickness | 06/29/2010 |
| 7736764 | Surface enhancing coating for gypsum-containing floor underlayments A coating for preparing a floor underlayment to receive an adhesive includes a water-soluble, latex polymer, a defoamer and a dual-function surface enhancing agent. The surface enhancing agent includes a set accelerator that also functions to cross link the adhesive... | 06/15/2010 |
| 7735285 | Acoustical mounting bracket for attaching ceiling suspension to floor joists A bracket for use in acoustically isolating a ceiling support grid from a frame member includes a planar body having a grid receiving formation and at least one mounting aperture, and a resilient grommet secured relative to each aperture for acoustically isolating a... | 06/15/2010 |
| D614943 | Acoustic isolator clip | 05/04/2010 |
| 7670520 | Multi-layer process for producing high strength fiber-reinforced structural cementitious panels with enhanced fiber content A process for producing fiber-reinforced structural cementitious panels made of at least one layer of fiber reinforced cementitious slurry, the process for each such layer of slurry including providing a moving web; depositing a first layer of individual, loose fibe... | 03/02/2010 |
| D608619 | Bridge apparatus useful for ceiling grid systems | 01/26/2010 |
| 7647744 | Acoustic isolator clip for isolating wallboard support channels from frame member A clip for use in acoustically isolating a wallboard support channel from a frame member, the support channel having at least one mounting point, includes a first portion positionable between a first surface of the channel and the frame member, a second portion posi... | 01/19/2010 |
| 7647705 | T-square with finger guard A finger guard for use with a T-square having a head and a blade includes an elongated body, two finger-shielding surfaces extending along a longitudinal axis of said body for accommodating an installer's thumb, a lower edge on the body that is attachable to the bla... | 01/19/2010 |
| 7637996 | Gypsum products utilizing a two-repeating unit dispersant and a method for making them A gypsum slurry includes water, a hydraulic component including stucco and a polycarboxylate dispersant. The dispersant has two repeating units wherein the first repeating unit is an olefinic unsaturated mono-carboxylic acid repeating unit or an ester or salt, and t... | 12/29/2009 |
| 7608347 | Modifiers for gypsum slurries and method of using them 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... | 10/27/2009 |
| 7601214 | Modified landplaster as a wallboard filler A gypsum slurry includes calcium sulfate hemihydrate, water and calcium sulfate dihydrate is coated with a hydrophilic, dispersible coating. The coating is less soluble than the calcium sulfate hemihydrate to delay exposure of the landplaster to the remainder of the... | 10/13/2009 |
| D601177 | Tray for paper beading apparatus | 09/29/2009 |
| 7587778 | Wallboard taping knife with polymeric hammer A tool includes a blade with a working end and a handle end opposite the working end, a handle secured to the handle end and having a blade end and a hammer end, a hammer secured to the hammer end and having a body made of a relatively hard, lightweight polymeric ma... | 09/15/2009 |
| D599831 | Corner bead roller tool | 09/08/2009 |
| D599231 | Finger guard for a T-square | 09/01/2009 |
| 7572329 | Method of making a gypsum slurry with modifiers and dispersants In a method of making a gypsum slurry, a polycarboxylate dispersant, a modifier and a hydraulic material comprising stucco are selected for use in the slurry. These components are then combined with water to form a slurry, where the modifier is added to the slurry p... | 08/11/2009 |
| 7572328 | Fast drying gypsum products A slurry is made including water, at least 50% by weight calcium sulfate hemihydrate, and a specific polycarboxylate dispersant prepared using at least three repeating units. A first repeating unit is a vinyl ether-type repeating unit. A second repeating unit includ... | 08/11/2009 |
| 7544242 | Effective use of dispersants in wallboard containing foam Effective use of dispersants in wallboard containing foam results from a method where stucco is mixed with a first dispersant and a first quantity of water to form a gypsum slurry. A soap is blended with a second dispersant and a second quantity of water to make a f... | 06/09/2009 |
| 7543708 | Plastic bag for fine powders A method of making and filling a plastic bag includes the steps of providing a bag having a plurality of microperforations; filling the bag with a powdered product; securing the bag; removing at least a portion of entrapped air in the bag through the microperforatio... | 06/09/2009 |
| 7516909 | Continuous slurry dispenser apparatus An apparatus for mixing an additive into a fluid to form a settable mixture includes a main fluid passageway having an inlet for receiving a supply of the fluid and an outlet for dispensing the fluid, the passageway having a longitudinal axis. The apparatus includes... | 04/14/2009 |
| 7513768 | Embedment roll device An embedment device includes a first integrally formed elongate shaft rotatably secured to the support frame and having a first plurality of axially spaced disks axially fixed to the first shaft, a second integrally formed elongate shaft rotatably secured to the sup... | 04/07/2009 |
| 7504165 | High strength flooring compositions A composition is disclosed for a mixture to be used in conjunction with water for preparing a slurry that hydrates to form a high strength flooring compound. The mixture includes from about 50% to about 98% by weight calcium sulfate hemihydrate. A three repeating un... | 03/17/2009 |
| 7503430 | Reduced dust acoustic panel An acoustical panel includes an acoustical layer having an interlocking matrix of calcium sulfate dihydrate, polyethylene glycol and at least one of the group fibers, a lightweight aggregate and mixtures thereof. The acoustical layer has voids in the interlocking ma... | 03/17/2009 |
| D586246 | T-square with finger guard | 02/10/2009 |
| D583840 | Inside corner gate for paper beading apparatus | 12/30/2008 |
