Cementitious composition
Patent 4875937 Issued on October 24, 1989. Estimated Expiration Date: 
October 21, 2008. 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.
October 21, 2008. 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 ReferencesHigh early strength cement Cement compositions Patent #: 4481037 InventorAssigneeApplicationNo. 260976 filed on 10/21/1988US Classes:106/695, With other cement material (e.g., Portland, calcium sulfate, etc.)106/791Lime containingExaminersPrimary: Dixon, William R. Jr.Assistant: Green, Anthony Attorney, Agent or FirmForeign Patent References
International ClassesC04B 007/32C04B 011/06 Foreign Application Priority Data1987-10-29 GBAbstractA cement composition to be combined with water comprises high alumina cement, beta anhydrite, aluminium sulphate, a source of free lime and a reactive filler, eg. blast furnace slag to form a rapid setting and hardening durable material.Other References
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