Clay mixture having contamination resistance
February 1, 2009. 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 3186896 Method of constructing underground concrete walls and reinforcement cage therefor Water barrier panel Double twist thread twisting frame Squaring off and reaming tool for deep elongated trench excavations Steel reinforced underground wall Method of forming a water barrier around foundations Method of making a water barrier panel Bentonite-gelled oil waterproofing composition Waterproofing structure InventorAssigneeApplicationNo. 304464 filed on 02/01/1989US Classes:428/76, Complete cover or casing52/169.14, With waterproofing means; e.g., covering, coating, or lamina106/33, Leak stopping106/900, SOIL STABILIZATION405/19, Mattress405/270, Impermeabilization428/72, Including elements cooperating to form cells428/102, Including stitching and discrete fastener(s), coating or bond428/325, Glass or ceramic (i.e., fired or glazed clay, cement, etc.) (porcelain, quartz, etc.)428/454, Sand, clay or mica (silica excluded)428/906, ROLL OR COIL428/911, PENETRATION RESISTANT LAYER428/913, MATERIAL DESIGNED TO BE RESPONSIVE TO TEMPERATURE, LIGHT, MOISTURE, ETC.442/256At least one layer is derived from water-settable material (e.g., cement, gypsum, etc.)ExaminersPrimary: Cannon, James C.Attorney, Agent or FirmInternational ClassesB32B 019/06E02D 027/32 AbstractA mixture of swellable clay, such as bentonite, is charged with an additive which provides an excess of single-charged cations which tend to neutralize the deleterious effects of double-charged cations which are naturally present in seawater and industrial waste. The mixture is deposited on and carried by a sheet to facilitate its uses as a pond liner or a foundation sealant.Field of SearchWith waterproofing means; e.g., covering, coating, or laminaMattress Impermeabilization Including elements cooperating to form cells Complete cover or casing Alignment layer of specified composition Glass or ceramic (i.e., fired or glazed clay, cement, etc.) (porcelain, quartz, etc.) Sand, clay or mica (silica excluded) | |
