Expanded synthetic calcium silicates
Patent 3998650 Issued on December 21, 1976. Estimated Expiration Date: 
December 21, 1993. 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.
December 21, 1993. 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 3238052 3574113 3590111 3676165 3804652 InventorsAssigneeApplicationNo. 495371 filed on 08/07/1974US Classes:106/672, Hollow, foam, cellular or porous material containing or method of forming cellular or porous product106/681, Soil, diatomaceous earth, clay, shale, slate or rock material containing or material for treating soil or earth (e.g., soil stabilization, etc.)106/796Silica-lime mixturesExaminersPrimary: Poer, J.Attorney, Agent or FirmForeign Application Priority Data1971-12-21 DTAbstractThe invention relates to expanded synthetic calcium silicates, particularly of a kind having a white or other pure color. | |
