Method for making a plant-cultivating web from excretive sludge of domestic animals
Patent 6922941 Issued on August 2, 2005. Estimated Expiration Date: 
April 24, 2023. 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.
April 24, 2023. 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 3907726 Process of making agricultural product from organic sewage sludge Alternative method for producing tall fescue sod RE33998 Method for producing sod Sludge treatment system Method for manufacturing sod Patent #: 5481827 InventorAssigneeApplicationNo. 10421746 filed on 04/24/2003US Classes:47/9, MULCHING71/12, From sewage or night soil264/122, Utilizing diverse solid particles523/128, Containing carbohydrate or cellular material derived from plant or animal47/56, SEED TAPE OR MAT, METHOD OR APPARATUS523/129Composition containing nonresinous organic material derived from municipal solid waste disposal system or process of preparingExaminersPrimary: Gellner, Jeffrey L.Attorney, Agent or FirmForeign Patent References
International ClassesA01G013/02C09K017/52 A01G001/00 AbstractA method for making a plant-cultivating web or sheet from excretive sludge of domestic animals includes collecting sludge; concentrating the sludge; stabilizing the sludge; dehydrating the sludge; mixing the sludge with polyvinyl acetate (PVAC), wherein the mixing ratio between the sludge and PVAC is 4:1; drying a mixture of the sludge and PVAC; grinding the dried mixture into powders; mixing the powders with polyethylene, wherein the mixing ratio between the powders and polyethylene is 10%-80%: 90%-10%; adding high molecular weight starch into a mixture of the powders and polyethylene; and rolling the starch/mixture of the powders and polyethylene into a plate-cultivating web. An environment-protective and waste-reusing product is provided accordingly. | |
