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| Number | Title | Issue Date |
| 8117786 | Insulation barrier for ceiling hatch openings A barrier or dam to contain loose insulation from falling through an attic access hatch or scuttle opening is provided. Embodiments include four pieces that can be assembled together around the perimeter of hatches of varying sizes. Two of the pieces may be male pie... | 02/21/2012 |
| 8034203 | Gypsum wallboard with improved nail pull strength and the method for making same Repulped fiber that has been treated with an aqueous solution of a caustic selected from sodium hydroxide, potassium hydroxide and sodium carbonate, is used to make wallboard paper that is used to make a gypsum wallboard having improved nail pulling strength compare... | 10/11/2011 |
| D638289 | Seismic expansion joint clip for suspended ceilings | 05/24/2011 |
| D638288 | Seismic expansion joint clip for suspended ceilings | 05/24/2011 |
| D637899 | Seismic expansion joint clip for suspended ceilings | 05/17/2011 |
| D637898 | Seismic attachment clip for suspended ceilings | 05/17/2011 |
| D637897 | Mounting bracket useful for ceiling grid systems | 05/17/2011 |
| 7918950 | Low fiber calcination process for making gypsum fiberboard An energy efficient method for making a gypsum cellulose fiberboard comprising adding a first portion of cellulose fiber to gypsum before the gypsum and cellulose fiber are co-calcined in a reactor, adding a second portion of cellulose fiber to the slurry after it l... | 04/05/2011 |
| 7908810 | Corrugated steel deck system including acoustic features The present invention relates to a sound rated floor system for inhibiting sound transmission between floors. The system includes a corrugated steel deck; a first layer of cementitious material or board or sheet applied over the corrugated steel deck; a sound insula... | 03/22/2011 |
| 7861470 | Self centering shaft wall system A J-runner, used in the construction of shaft walls in buildings is provided with a lifting element or ledge or both to permit simple centering of studs or shaft walls or both. By providing a lifting member in a lower J-runner, the studs or shaft walls or both can r... | 01/04/2011 |
| 7826917 | Method and system for laying out perforation patterns A method and system for automating the layout of perforation patterns is described. An embodiment of the invention includes an innovative software application running on a computer, which application allows a perforation designer to select lines or arcs that compris... | 11/02/2010 |
| D626406 | Mounting bracket useful for ceiling grid systems | 11/02/2010 |
| 7815889 | Method and apparatus for pressurized calcination of gypsum A method for calcining gypsum in a pressurized reactor by injecting combustion gases and air into the pressurized reactor to create a fluidized bed of gypsum, and heating the fluidized bed of gypsum in the pressurized reactor sufficiently to form a calcined hemihydr... | 10/19/2010 |
| D589334 | Clip for architectural element | 03/31/2009 |
| 7507287 | Activated carbon as mercury release control agent in gypsum calcination A method for providing effective mercury release control during gypsum calcination is disclosed. The method comprises providing a reactor and gypsum containing mercury; providing a mercury sorbent, such as activated carbon and/or derivatives thereof in the reactor; ... | 03/24/2009 |
| 7479008 | Burner apparatus A burner apparatus for an indoor or outdoor fireplace, fire pit, stove or oven is shown. The burner apparatus operates to produce natural gas fueled or liquid petroleum fueled amber flames among artificial logs, coals or a combination of artificial logs and coals, s... | 01/20/2009 |
| 7364676 | Slurry spreader for cementitious board production The invention provides a board forming system comprising a forming table comprising a belt with a surface for conveying a backing layer; a mixer fitted with a mechanism capable of depositing cementitious slurry material over a top surface of the backing layer; and a... | 04/29/2008 |
| 7364015 | Acoustical panel comprising interlocking matrix of set gypsum and method for making same An acoustical panel comprising a continuous phase of an interlocking set gypsum matrix and a method of preparing an acoustical panel are disclosed. ... | 04/29/2008 |
| D563770 | Acoustical mounting bracket for attaching ceiling suspension to floor joists | 03/11/2008 |
| 7258251 | Multi-chambered dispensing container A multi-chambered dispensing container which has a unique means for seating the cap portion of the container to the bottle portion of the container. The cap portion can be attached to the bottle portion such that the contents of one chamber of the container do not l... | 08/21/2007 |
