Roofing or siding article
Patent 4288959 Issued on September 15, 1981. Estimated Expiration Date: 
May 21, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 21, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 22350 43717 173957 1674630 2626872 2634208 2797201 2957775 3319390 Fibrous dispersion aid for thermoplastics Patent #: 4015039 InventorApplicationNo. 06/040587 filed on 05/21/1979US Classes:52/518, LAPPED MULTIPLANAR SURFACING; E.G., SHINGLE TYPE52/556, Metal face end covering52/559, Formed by slot52/560TaperedExaminersPrimary: Lawrence, Evan K.Attorney, Agent or FirmInternational ClassesE04D 1/28 (20060101)E04D 1/00 (20060101) E04D 1/26 (20060101) AbstractA weather and fire-resistant roofing or siding article, such as a shingle or panel, having a high thermal insulation value is cut from insulating board comprising fiber, binder and about 50 to 90% by weight expanded perlite. The article has adjacent butt and nailing sections, the butt section being substantially uniformly the maximum thickness of the article and having a water- and weather-resistant coating composition on the outer surface to be exposed to the weather, and the nailing section having a non-tapered outer surface and an inner surface tapered from the maximum thickness at the junction of the two sections to a minimum thickness at the edge of the article. The outer surface of the butt section may be machined or pressed or embossed to provide a decorative surface simulating a wood shake, and coated with a sun- and moisture-proof coating such as asphalt and roofing granules.Other References
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