Waterproofing soil
Patent 4501788 Issued on February 26, 1985. Estimated Expiration Date: 
September 30, 2002. 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.
September 30, 2002. 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 Pipe lagging cloth and composition Water barrier panel Method of making a water barrier panel Bentonite-gelled oil waterproofing composition Patent #: 4209568 InventorAssigneeApplicationNo. 06/430685 filed on 09/30/1982US Classes:405/107, Artificial water barrier (e.g., dam, levee, etc.)405/116, In situ construction427/136, COATING PAVEMENT OR THE EARTH (E.G., ROADMAKING, ETC.)428/325, Glass or ceramic (i.e., fired or glazed clay, cement, etc.) (porcelain, quartz, etc.)428/454, Sand, clay or mica (silica excluded)428/913, MATERIAL DESIGNED TO BE RESPONSIVE TO TEMPERATURE, LIGHT, MOISTURE, ETC.442/59, COATED OR IMPREGNATED WOVEN, KNIT, OR NONWOVEN FABRIC WHICH IS NOT (A) ASSOCIATED WITH ANOTHER PREFORMED LAYER OR FIBER LAYER OR, (B) WITH RESPECT TO WOVEN AND KNIT, CHARACTERIZED, RESPECTIVELY, BY A PARTICULAR OR DIFFERENTIAL WEAVE OR KNIT, WHEREIN THE COATING OR IMPREGNATION IS NEITHER A FOAMED MATERIAL NOR A FREE METAL OR ALLOY LAYER588/900APPARATUSExaminersPrimary: Bell, James J.Attorney, Agent or FirmInternational ClassesE02B 3/12 (20060101)E02D 31/00 (20060101) AbstractA method and a product providing for waterproofing soil utilizing a flexible non-biodegradable support capable of venting gas coated with water swellable bentonite and covering the soil to be waterproofed with the coated support. | |
