Novel collectors and processes for making and using same
Patent 4929343 Issued on May 29, 1990. Estimated Expiration Date: 
July 5, 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.
July 5, 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 2397508 3145082 3438494 3464784 Preparation from hydroxylammonium sulfate of oximes and hydroxamic acids via alcoholic hydroxylamine solution Purification of kaolin clay by froth flotation using hydroxamate collectors Novel collectors and processes for making and using same Patent #: 4871466 InventorsAssigneeApplicationNo. 375443 filed on 07/05/1989US Classes:209/166With modifying agentsExaminersPrimary: Lacey, David L.Assistant: Lithgow, Thomas M. Attorney, Agent or FirmForeign Patent References
International ClassesB03D 001/01B03D 001/008 B03D 001/018 AbstractA method for the production of alkyl or alkaryl hydroxamic acids and/or salts wherein a C8 -C22 alcohol is employed with water as the solvent is disclosed as well as the resultant salt and/or acid solutions per se and their use in the flotation of non-sulfide minerals, preferably clay.Other References
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