Process for the solution mining of subterranean sodium bicarbonate bearing ore bodies
Patent 3953073 Issued on April 27, 1976. Estimated Expiration Date: 
April 27, 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.
April 27, 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 2625384 3184287 InventorApplicationNo. 470912 filed on 05/17/1974US Classes:299/5, Dissolving or chemical reaction23/302T, Sodium compounds422/261, Liquid-solid contact means423/206.2Alkali carbonate from tronaExaminersPrimary: Novosad, Stephen J.Assistant: Suchfield, George A. Attorney, Agent or FirmAbstractThis invention relates to the solution mining of subterranean trona deposits which comprises treating the ore "in situ" with an aqueous solvent containing sodium hydroxide at a concentration of not less than approximately 1% and no greater than that which will leave the brine thus produced with no less than approximately 1.5 parts of sodium bicarbonate per hundred parts of sodium carbonate when saturated.Field of SearchInput and output wells |
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