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| Number | Title | Issue Date |
| 7323237 | Algae-resistant roofing material and methods A method of making algae-resistant shingles in which the algae-inhibiting material, usually a copper compound, is applied only to larger granules, instead of being applied to a full size range of granules. Use of the larger granules only, as algae-resistant granules... | 01/29/2008 |
| 6935089 | Methods of manufacturing roofing products Methods of making roofing products. One such method includes (a) creating a mixture having a filler and a polymer; (b) forming a sheet from the mixture; (c) cooling the sheet; (d) embossing the sheet; (e) forming multiple roofing products from the sheet; and (f) bun... | 08/30/2005 |
| 6933037 | Triple laminate roofing shingle A three-layer asphalt composition shingle where the top layer is of a full width, a middle layer is less than the full width, and a bottom layer has a width shorter than the middle layer. The middle and top layers of the shingle have tabs and cutouts. The tabs of ea... | 08/23/2005 |
| 6920730 | Multi-layered shingle and method of making same A multi-layered shingle adapted to be positioned with other similar shingles in an overlapping arrangement on a roof to yield a simulated wooden shake roof covering comprising a headlap portion and a butt portion. The butt portion comprises a series of multi-layered... | 07/26/2005 |
| 6790307 | Shingles with multiple blend drops and method of depositing granules onto a moving substrate A method of making shingles includes providing a moving asphalt coated sheet having at least an overlay lane and an underlay lane. Blend drops of at least two color blends are discharged onto each lane, wherein at least one of the blend drops discharged onto the ove... | 09/14/2004 |
| 6692608 | Method of making simulated wood shake shingle having vertical shadow lines A method of making shingles includes coating a shingle mat with roofing asphalt to make an asphalt-coated sheet, and covering the asphalt-coated sheet with granules to form a granule-covered sheet along a longitudinal axis, the granule-covered sheet havin... | 02/17/2004 |
| 6679308 | Multi-layered shingle and method of making same An apparatus is provided for the continuous manufacture of shingles, for producing a plurality of laminated shingles. The apparatus includes a means for continuously advancing a fibrous sheet, a means for waterproofing the sheet, a means for adhering gran... | 01/20/2004 |
| 6524682 | Glass backdust for roof covering A roof covering has a back surface and a plurality of glass particles applied as a backdust on the back surface. A method of manufacturing a roof covering includes coating a substrate with an organic-based coating material, and applying a plurality of gla... | 02/25/2003 |
| 6355132 | Multi-layered shingle and method of making same A method is provided of continuously producing a plurality of laminated shingles, including the steps of advancing a fiber sheet, waterproofing the sheet, applying granules thereto, cutting and separating the sheet into a plurality of strips which are pos... | 03/12/2002 |
| 6352744 | Vacuum treatment of asphalt coating In a method of reducing voids in an asphalt roofing product, an asphalt coating material having voids is contacted with a vacuum in an amount effective to reduce the voids in the coating material. A mat is coated with the coating material to make an aspha... | 03/05/2002 |
| 6190754 | Variegated shingle and method of manufacture The variegated shingle comprises a shingle layer having front and rear surfaces the front surface including a butt portion and a headlap portion. The shingle layer contains granules on the front surface forming a plurality of horizontal striations providi... | 02/20/2001 |
| 6185471 | Method for labeling roofing shingles using binary coding scheme, and shingles produced by the method Information as to the location, date and shift of manufacture of roofing shingles is cut into an edge of the shingles as a coded sequence of slits. Preferably, the slit sequence is coded using a binary coding scheme, with a separate binary number group de... | 02/06/2001 |
| 6174403 | Muli-layered and colored shingle and method of making same A method for the production of a laminated shingle wherein at least two strips of a continuously advancing sheet are coated with differently colored aggregates of granules. Present among one of the aggregates are a multitude of granules having at least on... | 01/16/2001 |
| 6092345 | Method of making a shingle A method is provided for making a shingle by cutting a layer of shingle material to have a headlap area and a tab area, and with a plurality of tabs being present in the tab area, separated by slotted openings. The tab area of the shingle is made to have ... | 07/25/2000 |
| 5961780 | Apparatus for making a shingle Apparatus is provided for making a multi-layer shingle by cutting an anterior layer of shingle material to have a headlap area and a tab area, and with a plurality of tabs being present in the tab area, separated by slotted openings. The tab area of the a... | 10/05/1999 |
| 5843522 | Bitumen-based membrane with sealing means for contiguous membranes and relevant processing system A bitumen-based waterproofing membrane is provided with an improved edge for sealing with a contiguous membrane to provide a membrane system with improved waterproofing characteristics. A bitumen-based reinforced membrane sheet is coated with granular mat... | 12/01/1998 |
| 5795622 | Method of rotating or oscillating a flow of granules to form a pattern on an asphalt coated sheet In a method of forming a pattern of granules on an asphalt coated sheet moving in a machine direction, a flow of separate first granules and second granules is discharged onto the sheet. The flow of granules is rotated to form a pattern of first and secon... | 08/18/1998 |
| 5747105 | Traversing nozzle for applying granules to an asphalt coated sheet A method for applying granules to a moving asphalt coated sheet includes providing a nozzle for discharging granules onto a sheet having first and second edges. The nozzle is mounted for movement along a path which traverses the sheet and extends beyond t... | 05/05/1998 |
| 5718787 | Integration of asphalt and reinforcement fibers A method for producing asphalt fibers includes supplying molten asphalt to a rotating asphalt spinner, centrifuging asphalt fibers from the asphalt spinner, and collecting the asphalt fibers. The molten asphalt is supplied to the asphalt spinner at a temp... | 02/17/1998 |
| 5494728 | Method for making roofing shingles using asphalt fibers, and shingles made thereby A method for making asphalt fibers includes supplying molten asphalt to a rotating asphalt spinner at a temperature between about 270° F. and about 500° F., centrifuging asphalt fibers from the asphalt spinner, and collecting the asphalt fibers. A metho... | 02/27/1996 |
| 5382449 | Method of using volcanic ash to maintain separation between asphalt roofing shingles Volcanic ash is applied to hot asphalt roofing shingles during manufacture to maintain separation and inhibit color transfer between the shingles when stacked. Volcanic ash is separated into a fine particulate component which is a respirable dust and a re... | 01/17/1995 |
| 5286544 | Oil and rubber treated roofing granules Roofing granules having surfaces treated with an oil and an elastomeric rubber. The elastomeric rubber can be an organic block copolymer having elastomeric and nonelastomeric repeating units. The oil and rubber are applied to the roofing granules' surface... | 02/15/1994 |
| 5186980 | Roofing shingles and method of making same A method of making roofing shingles in several lanes in which, after the asphalt saturated base sheet is covered with a first granule layer, a pattern of asphalt patches is printed on each lane and contrasting color granules are adhered to the patches. Ea... | 02/16/1993 |
| 4900589 | Granule application device and process A granule application device for use in making a shingle roofing product is provided. This device includes a sheet having a weather protected headlap area and having a weather exposed butt area which moves continuously from an upstream end to a downstream... | 02/13/1990 |
| 4795661 | Process for the manufacture of asphalt shingles A rectangular shingle sheet having a butt portion which is longitudinally divided into spaced apart tab segments and an undivided headlap portion which is 1.3 to 1.5 times higher than the outward extensions of said tab segments in the butt portion; the bu... | 01/03/1989 |
| 4634622 | Lightweight asphalt based building materials and process for making same A lightweight asphalt roofing product wherein the asphalt-based coating has a specific gravity less than 1.0. A lightweight filler is used which has an effective specific gravity in the range of 0.10-0.50 and is present in the coating in the range of 3%-2... | 01/06/1987 |
| 4352837 | Method of manufacturing roofing shingles having multiple ply appearance An improved apparatus for manufacturing roofing shingles having multiple ply appearance, in which an elongated strip of a dry organic or mineral material previously saturated in an asphalt tank and with at least one uniform longitudinally continuous strip... | 10/05/1982 |
| 4274243 | Asphalt shingle for simulating a tiled roof The present invention relates to the field of roof coverings, specifically laminated roof shingles formed of mineral granule covered, asphalt saturated felt material. The disclosed shingle when combined with other shingles on a roof deck simulates a tile ... | 06/23/1981 |
| 4241107 | Roof coating process A unique method for applying a lightweight cementitious coating to either existing or new roof surfaces. The invention relates to the method of preparing the coating mixture and its manner of application.... | 12/23/1980 |
| 3995083 | Electrical discharge recording medium, particularly aluminized paper for recording, and method A paper carrier substrate, has a contrasting layer applied thereto which thereafter is aluminized; in accordance with the invention, this contrasting layer is ordinary printing ink, which has a somewhat rough surface, permitting excellent adhesion of the ... | 11/30/1976 |
