Cement composition for extrusion
Patent 5047086 Issued on September 10, 1991. Estimated Expiration Date: 
April 28, 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.
April 28, 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 3390003 Mortar compositions and method of making same Hydraulic cement adhesive compositions Gamma-dicalcium silicate-containing cement composition Patent #: 4560413 InventorsAssigneeApplicationNo. 344600 filed on 04/28/1989US Classes:106/731, Plant material (e.g., vegetable fiber, wood, etc.)106/737, Silica containing (e.g., sand, quartz, etc.)106/797Fiber containing or step of molding or shaping of materialExaminersPrimary: Dixon, William R. Jr.Assistant: Marcantoni, Paul Attorney, Agent or FirmForeign Patent References
International ClassesC04B 016/02C04B 016/06 Foreign Application Priority Data1988-05-06 JPAbstractA cement composition for extrusion which is produced by incorporating, into cement mortar, 3 to 15 weight % of crushed pulp fiber, 0.2 to 1 weight % of at least one member selected from an alkylcellulose and a hydroxyalkylalkyllcellulose, and a 2% water solution having a viscosity of 80,000 cps or more allows for reduced production costs by reducing the loads of the binder material using a pulp fiber without carcinogenicitic asbestos fiber. Furthermore, it allows for excellent extrudability and provides the moldings with workability such as nailing and sawing.Other References
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