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| Number | Title | Issue Date |
| 4855348 | Aqueous, silicone-containing coating composition for high temperature appliances A storage stable water-based paint comprising a solid silicone resin and an ammonium salt of a drying oil modified acrylic copolymer provide a coating for barbecue grills and other appliances that are subjected to temperatures as high as 1300° F. A smoot... | 08/08/1989 |
| 4853085 | Neutral sized paper for use in the production of gypsum wallboard A paper particularly adapted for use as cover sheets in the production of gypsum wallboard, the paper having improved porosity and strength to permit better drainage and more rapid drying in the production of the paper to permit less fiber to be utilized,... | 08/01/1989 |
| 4820754 | Drywall coating composition The unequal porosity and different textures of a drywall reinforced with joint tape and joint compound are concealed by a paint made from a low cost, easily dispersible powder in which the pigment volume concentration is about 70% to about 75%. A vinyl ac... | 04/11/1989 |
| 4801355 | Tabular acicular gypsum and method of filling paper A tabular variety of acicular gypsum crystal filler is prepared by hydrating calcium sulfate dihydrate particles in a seeded continuously stirred reactor at a low level of super-saturation to obtain crystals having an aspect ratio of about 100:10:1 and av... | 01/31/1989 |
| 4787767 | Stud clip for the top rail of a partition The twisting of studs within the ceiling and floor rails of a partition is prevented by a quickly installable stud clip which may be moved along the rail to its desired position before being fastened to the rail and stud. The channel form top rail in this syst... | 11/29/1988 |
| 4771687 | Belt transfer printing of nonplanar articles Apparatus and method for belt transfer printing of nonflat surfaces of porous articles wherein the printing of the article by a first region of the belt is carried out substantially simultaneously with the inking of a second region of the belt. In a prefe... | 09/20/1988 |
| 4769949 | Tub and shower door enclosure having free-floating self-adjusting lower guide assembly A shower door mounted on rails for movement thereon and having a lower guide assembly which is free-floating and which comprises a flange retained in a lower sill track slot and having the other end hingedly mounted on a flange of the shower door.... | 09/13/1988 |
| 4767549 | Dispersant coated mineral fiber in a drilling fluid An oil well drilling fluid containing mineral fibers which have been coated individually with a dispersant is better able to plug voids and fractures in the rock being drilled than those of the prior art because the mineral fibers are thoroughly dispersed... | 08/30/1988 |
| 4757663 | Drywall furring strip system A drywall furring system comprises a plurality of longitudinal carrying channels having congruent tongues co-planar with, spaced apart along and depending from the opposite flanges of the channels and a plurality of furring channels having pairs of slots ... | 07/19/1988 |
| 4752538 | Method for forming a lightweight cementitious structural product and a product formed thereby A method for producing a lightweight set cementitious product having excellent strength by forming a aqueous cementitious slurry, incorporating therein expandable polystyrene beads which are less than completely expanded, and heating the slurry to drive o... | 06/21/1988 |
| 4750307 | Wall construction and resilient runner therefor A buckle-resistant resilient runner having a thickness of from 0.017 to 0.020 inch is interposed between the framework and the wall-board of a partition having a sound transmission coefficient of 53. A scalloped web connects the wallboard support flange a... | 06/14/1988 |
| 4744963 | Highly efficient calcination of gypsum to hemihydrate Hydrodynamic pumping of the fluidized calcining mass in a kettle is set up by the continuous flow of the mass to and from heating rods immersed therein which are constantly emitting at least about 1 British Thermal Unit of heat per minute per square inch ... | 05/17/1988 |
| 4744961 | Submerged combustion calcination Gypsum is calcined by contacting it with the hot gases spewing out of a combustion tube submerged in the mass of gypsum. The formation of dead-burned anhydrite is reduced by surrounding the combustion tube with a second tube called a draft tube. Gypsum pa... | 05/17/1988 |
| 4743475 | Drywall coating composition The unequal porosity and different textures of a drywall reinforced with joint tape and joint compound are concealed by a paint made from a low cost, easily dispersible powder in which the pigment volume concentration is about 70% to about 75%. A vinyl ac... | 05/10/1988 |
| 4741783 | Apparatus and method for rotary buffing Apparatus and method for rotary buffing or wiping of workpieces having uneven surfaces in which the workpiece generally linearly advances relative to one or more buffing rolls which are spinning about spin axes disposed in a plane generally parallel to th... | 05/03/1988 |
| 4730424 | Rooftop walkway A walkway on a rooftop comprises expanded metal planks supported by U-shaped support stands disposed transversely with respect to the length of the planks. The planks have alternating rows of ridges and valleys, both of which have transverse slits. The pl... | 03/15/1988 |
| 4724650 | Subceiling beam intersection An intersection spacer is disclosed for use in a subceiling structure of a grid of open-ended runner beams and intersecting open-ended cross beams, the intersection spacer being generally square in horizontal cross section with inverted vertical corner ed... | 02/16/1988 |
| 4724224 | High density chronic oxide refractory block Large, dense chromic oxide refractory blocks containing from about 80% to about 98% chromic oxide are made by firing a green block comprising, in addition to the chromic oxide, titania and a colloidal silica having a surface area of at least about 90 m | 02/09/1988 |
| 4704838 | Rounded corner ceiling runner system A generally L-shaped coupling plate having an arcuate mandrel at the junction of two generally rectangular tongues is united with a notched out channel by inserting the first tongue into slots defined by the web of the channel and opposed ribs spaced apar... | 11/10/1987 |
| 4702056 | Subceiling construction A suspended grid subceiling and panel units therefor having the appearance of a continuous expanse of decorative light-transmitting block masonry. In a preferred embodiment, the panels units are assemblies of an opaque subgrid of rails and cross rails and... | 10/27/1987 |
| 4698946 | Intersecting partitions adapted to support corner-mounted furniture Hang-on furniture supporting studs standing independently at the intersection of wallboard partitions are tied together by an intersection stud for proper orientation and stabilization.... | 10/13/1987 |
| 4686253 | Lightweight joint compound having improved paintability Expanded perlite coated with a composition to render the perlite impervious to water, and a joint compound incorporating the same. The perlite is ground prior to expansion to provide subsequently expanded perlite having a mean particle size from about fro... | 08/11/1987 |
| 4681613 | Slag furnace melt flow control valve A valve apparatus for the precise regulation of a stream of molten material such as molten rock or slag as it issues from a primary melter or holding device, comprising a frame retaining a valve, the valve comprising a pair of plate-form valve members, on... | 07/21/1987 |
| 4681644 | Accelerator for gypsum plaster and process of manufacture A setting accelerator for calcined gypsum plaster and a process for its preparation are disclosed. The accelerator comprises finely ground calcium sulfate dihydrate having composite coatings on the particles of firstly a calcination inhibiting material su... | 07/21/1987 |
| 4672785 | Modified runner and area separation wall structure utilizing runner An integral generally channel-form runner for securing and supporting one or more wallboard panels in a demountable structure, the runner having an integral support for the lower edges of the wallboard panels in a position spaced above the bottom of the r... | 06/16/1987 |
| 4670032 | Melt flow control valve A valve apparatus for the precise regulation of a stream of molten material such as molten rock or slag as it issues from a primary melter or holding device, comprising a frame retaining a valve, the valve comprising a pair of plate-form valve members, on... | 06/02/1987 |
| 4666355 | Top grip lock nut assembly A pair of legs depending from the ring of a lock nut carrier pass through oppositely disposed arcuate slits in a spring clip and cleave to the lock nut so that the spring clip will support the nut within a metal channel framing member. The carrier and nut... | 05/19/1987 |
| 4661161 | Ready-mixed, setting-type cementitious composition having separately packaged accelerator A setting-type cementitious composition useful for a variety of applications, including, in a preferred embodiment, a joint compound for finishing joints between adjacent gypsum wallboards, comprising a first or cementitious component in pre-mixed form co... | 04/28/1987 |
| 4657594 | Lightweight joint compound Expanded perlite coated with an amino-functional siloxane and a silicone wetting agent, and a joint compound incorporating same, which, when applied to gypsum wallboard, has improved bonding properties and greater uniformity in paint gloss appearance betw... | 04/14/1987 |
| 4655950 | Foamed cast acoustical material and method A lightweight cast acoustical material requiring less drying time and energy is obtained by lightly cooking an aqueous slurry of starch, cooling it to about less than 140° F., whipping air into it, adding granulated mineral wool with thorough mixing to f... | 04/07/1987 |
| 4647486 | Fire resistant gypsum board . . . anhydrite Increased fire resistant gypsum board core formulations and plaster fireproofing formulations are provided by incorporating calcium sulfate anhydrite into the formulations. Particularly fire resistant effects are achieved with a fibrous form of calcium su... | 03/03/1987 |
| 4638606 | Decorative trim system for partition adapted to support a cantilevered load The outside corners of hollow partitions comprising kerfed-edge wallboards supported by kerf-engaging studs having a bifurcated web open to the frontal insertion of a slotted standard from which furniture may be suspended are supported by a corner stud fa... | 01/27/1987 |
| 4634498 | Method for the production of high density fiberboard High strength and high density wood fiberboard is formed by treating the wood fiber source material with a highly alkaline solution, such as sodium hydroxide solution, before interfelting the fibers into a loose mat. The wood source material may be treate... | 01/06/1987 |
| 4633614 | Adjustable tub enclosure and shower stall doors A structure comprising movable doors for use in tub enclosures or shower stalls, each door having a frame and a panel mounted in the frame, and adjustment apparatus for raising or lowering one side of the door to compensate for out-of-plumb wall condition... | 01/06/1987 |
| 4629419 | Calcination method and apparatus An apparatus for calcining a granular or powdered mineral, more specifically hydrated calcium sulphate, comprising a vessel the side wall or walls of which slope inwardly toward a bottom of small cross-sectional area, as compared with an upper region of t... | 12/16/1986 |
| 4625477 | Display wall formed of readily attachable and detachable panels A modular wall panel construction including at least two vertically oriented structural members in edge-to-edge engagement, and means affixing the structural members together and permitting ready disassembly thereof, comprising a vertically oriented stand... | 12/02/1986 |
| 4626199 | Submerged combustion calcination Gypsum is calcined by contacting it with the hot gases spewing out of a combustion tube submerged in the mass of gypsum. The formation of dead-burned anhydrite is reduced by surrounding the combustion tube with a second tube called a draft tube. Gypsum pa... | 12/02/1986 |
| 4622791 | Base molding An integral base molding adapted to be mounted at the base of a wall, and having a front wall member, a rear wall member and a panel-supporting web positioned above the bottom of the base molding, defining a channel adapted to receive the lower edges of p... | 11/18/1986 |
| 4621471 | Base trim system for partition corners A base trim system for partition corners comprises a base trim and a mounting bracket for the base trim. The base trim piece for the corner of intersecting walls has two upright wings angularly joined at a first edge of each, a recessed flange joined to t... | 11/11/1986 |
| 4621473 | Field attachment clip for wall panels An integral clip for attaching wall panels to metal studs having flanges in engagement with the occluded surfaces of the wall panels, the clip comprising impaling points adapted to be driven into the occluded surface of the panel for securing the clip to ... | 11/11/1986 |
