Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 8142915 | Foamed slurry and building panel made therefrom A gypsum slurry is described that includes water, a hydraulic component comprising at least 50% calcined gypsum by weight based on the dry weight of the hydraulic component, foam, a defoamer and a polycarboxylate dispersant. In some embodiments of the invention, the... | 03/27/2012 |
| 8133600 | 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... | 03/13/2012 |
| 8088218 | Foamed slurry and building panel made therefrom A gypsum slurry is described that includes water, a hydraulic component comprising at least 50% calcined gypsum by weight based on the dry weight of the hydraulic component, foam, a defoamer and a polycarboxylate dispersant. In some embodiments of the invention, the... | 01/03/2012 |
| 8057915 | Acoustical gypsum board panel and method of making it The acoustical product of the present invention comprises an acoustical product including a matrix of calcium sulfate dihydrate crystals and expanded perlite distributed throughout the matrix. The expanded perlite has a particle size distribution with at least 10% o... | 11/15/2011 |
| 7932308 | 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... | 04/26/2011 |
| 7892472 | Method of making water-resistant gypsum-based article A moisture resistant gypsum-based product, e.g., a gypsum board, is made by adding a small amount of a siloxane to the aqueous slurry used to make the gypsum-based product along with a small amount of a dead burned magnesium oxide catalyst to enhance the curing of t... | 02/22/2011 |
| 7846536 | Building panels with aesthetic edges A building composite panel including at least one longitudinal edge is made of a core of hydraulic cement and a multi-ply edge facing material covering and attached to at least one of the longitudinal edges. The facing material includes at least a first ply configur... | 12/07/2010 |
| 7875114 | Foamed slurry and building panel made therefrom A gypsum slurry is described that includes water, a hydraulic component comprising at least 50% calcined gypsum by weight based on the dry weight of the hydraulic component, foam, a defoamer, a polycarboxylate dispersant having olefinic unsaturated mono-carboxylic a... | 01/25/2011 |
| 7861955 | Wet-grinding gypsum with polycarboxylates The process of the present invention includes obtaining a feed material having an initial median particle size. A solution of a polycarboxylate dispersant in water is formed, then the feed material is added to the solution to form a slurry. The slurry is wet-ground ... | 01/04/2011 |
| 7819971 | Method of using landplaster as a wallboard filler A gypsum slurry includes calcium sulfate hemihydrate, water and calcium sulfate dihydrate, where the calcium sulfate dihydrate is added downstream of the mixer. In an optional embodiment, the a gypsum slurry includes calcium sulfate hemihydrate, a polycarboxy... | 10/26/2010 |
| 7815730 | 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... | 10/19/2010 |
| 7811685 | 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... | 10/12/2010 |
| 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 |
| 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 |
