United States Gypsum Company

Knauf Gips Kg

David D Pelot

Robert H Negri

Tyler Kincaid

Samar Emami

Salvatore C Immordino, Jr

Richard B Stevens

Christopher Robert Nelson

John Jason Roxburgh

Srinivas Veeramasuneni

Rafael Bury

William Rago

Terry L Rosenstiel

Jeffrey F Grussing

Alexander J Donovan

Naveen Punati

Salvatore Immordino

Charles W Cochran

Kevin W Moyer, Jr

Juan Carlos Ruiz Castaneda

Juan Carlos Ruiz Castañeda

Juan Huitzil

Edgar R De La Rosa Cruz

Vittorio A Immordino

Jorge A Garcia Torres

Juan Ignacio Huitzil

Antonio Contreras

Miguel Gama Goicochea

Joseph W Schlude

Christopher R Nelson

Juan Carlos Ruiz CASTAÑEDA

Kevin W Moyer

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

A joint compound including calcium sulfate hemihydrate and/or at least one filler, wherein a total amount of the at least one filler and/or calcium sulfate hemihydrate is at least about 50 wt % of the joint compound on a dry (water-free) basis, preferably the filler comprises calcium carbonate, calcium sulfate dihydrate, or calcium sulfate anhydrite, or a mixture thereof; binder at up to about 15 wt % of the joint compound on a dry basis; polymer thickener at up to about 3 wt % of the joint compound on a dry basis; plasticizer dedusting agent at about 0.01 to about 3 wt % of the joint compound on a dry (water free) basis; and an additive up to about 10 wt % of the joint compound on a dry basis.

Plasticizer dedusting agents for joint compounds

Method of making foamed gypsum slurry having 15 to 90 volume percent gas bubbles including: passing first slurry including water and on dry basis 50 to 98 wt. % calcium sulfate hemihydrate, 1 to 50 wt. % calcium carbonate, and 0.1 to 10 wt. % cellulose thickener via a first hose to a Wye connector conduit first inlet opening at Rate C and passing alum solution via a second hose to a second inlet opening of the conduit at Rate D to create combined mixed stream passing from the conduit to a static mixer for mixing for Time 3 to activate at least a portion of the calcium carbonate and alum to generate COand create the foamed gypsum slurry; transferring the slurry from the mixer to a cavity between two wall boards via a third hose. Allowing the slurry in the cavity to expand, harden and dry.

Method for making a lightweight gypsum composition with internally generated foam and products made from same

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. An actuator assembly is configured to drive the sanding member into contacting relationship with the joint compound specimen such that the sanding member exerts a controlled amount of pressure against the joint compound specimen. The force gauge is configured to measure a resistance force against the sanding member in a resistance direction in opposing relationship to the sanding direction. A processor programmed with a joint compound analyzing application is configured to use a force signal from the force gauge that is indicative of the resistance force to determine the sandability value for the joint compound specimen.

System and method for evaluating joint compound specimen

An identifiable wallboard joint tape is provided and includes a web of tape incorporated with an identifier such that the tape is visible under UV light and visually distinguishable from the surrounding wallboard joint and joint compound.

Wallboard joint tape with fluorescent compound

A gypsum-based composition of calcium sulfate hemihydrate with (a) alum and calcium carbonate and/or (b) zeolite and sodium percarbonate for making foamed gypsum slurry. A method to make foamed gypsum slurry from the composition. A method to make foamed gypsum product from the composition. A cavity wall having a cavity filled with the foamed gypsum product.

A joint tape embedding apparatus configured to determine the bonding and/or 'feel' of embedding joint tape into a dry wall or wall board joint using a particular joint compound. The joint embedding apparatus is configured to allow the same user or different users to accurately repeat the determination of the bonding and/or 'feel' attributes of the joint compound.

Joint tape embedding apparatus, system, and method

Provided are building panels comprising at least one magnet receptive element, methods for making such panels, and kits and methods for attaching objects to a panel without nails or screws.

Magnet receptive panels and methods

Growing community of inventors

Chicago, IL, United States of America

David D Pelot