Szoke; Ernest G., Jaeschke; Wayne C., Span; Patrick J. - US Patent Attorneys and Agents

Attorney: Szoke; Ernest G., Jaeschke; Wayne C., Span; Patrick J.

Number of patents: 40
Last date: August 22, 2000

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Number	Title	Issue Date
6107523	Beta-diketones for the extraction of copper from aqueous ammoniacal solutions Novel modified and improved beta-diketones and their use in the extraction of copper from aqueous ammoniacal solutions containing copper values, resulting from commercial processes, including, but not limited to, leaching of copper containing ores, such a...	08/22/2000
6071429	Viscosity-stabilized amide composition, methods of preparing and using same Amide compositions useful for softening textile materials, such as fabrics. A concentrate composed of the amide softener and an alkylpolyglycoside is diluted to provide a softening solution of low viscosity stable over extended periods, which on applicati...	06/06/2000
5976218	Process for the recovery of nickel A process for the recovery of nickel from a nickel containing ore in which the ore, particularly a laterite ore, is initially leached with an aqueous acid solution, after which the nickel is precipitated as nickel hydroxide by adding a hydroxide to the aq...	11/02/1999
5968364	Process for the removal of toxic cyanide and heavy metal species from alkaline solutions Toxic cyanide and anionic metal species are removed from aqueous alkaline solutions by contacting the aqueous alkaline solutions with an extractant compound which is capable of being protonated at a pH of 9 or above. Whereby the anionic metal species is e...	10/19/1999
5962399	Preparation of alkylpolyglycosides and cleaning compositions comprising same A process for preparing high detergency or surfactant alkyl polyglycoside compositions and a purified alkyl monoglycoside and to compositions employing the polyglycosides for various end use applications. The process involves removal of a substantial port...	10/05/1999
5908605	Copper recovery process An improvement in the process of recovery of copper from aqueous ammoniacal solutions containing copper values in which the copper values are extracted from the aqueous ammoniacal solution by an organic phase comprised of a diketone copper extractant diss...	06/01/1999
5885327	Process for the recovery of gold Recovery of gold from alkaline cyanide leach solutions using ion exchange adsorbents, comprising (a) contacting the cyanide leach solution containing the gold with an extraction reagent comprised of a solid adsorbent carrying an organic base functionality...	03/23/1999
5879556	Method of recovering extractant A method for the recovery of extractant from the aqueous effluent continuously exiting from a solvent extraction circuit, in which the effluent is contacted with the same water-immiscible diluent being used in the circuit as solvent for the extractant, su...	03/09/1999
5744107	Process for removing heavy metals from soil Heavy metals are efficiently removed from contaminated soil by a process which comprises leaching or washing the soil with a mild leachant solution. The leachant solution is comprised of an aqueous solution of an acid and a salt. The anion of the acid for...	04/28/1998
5734029	Preparation of improved alkypolygloycoside surfactant mixtures An improved alkylpolyglycoside surfactant composition, and method of preparing same, by selecting an average chain length of the alkyl moiety of the composition and mixing two or more of at least binary components having an average alkyl chain lengths suc...	03/31/1998
5670035	Method for recovering copper An improved process is described for the recovery of copper from an aqueous feed solution using solvent extraction and electrowinning in which the electrowinning is conducted in a first step wherein the electrolyte is flowing perpendicular to the cathode ...	09/23/1997
5660806	Process for removing lead from sandblasting wastes containing paint chips Heavy metals are efficiently removed from contaminated soil by a process which comprises leaching or washing the soil with a mild leachant solution comprised of an aqueous solution of an acid and a salt. Heavy metals are also efficiently removed from pain...	08/26/1997
5654458	Recovery of palladium Improvement on the recovery of palladium from aqueous acidic solutions employing ketoximes, including novel ether oximes and palladium complexes, comprising contacting the aqueous acidic solution containing the palladium with an organic solvent containing...	08/05/1997
5632963	Process for the removal of impurity elements from solutions of valuable metals A process is disclosed for removing impurity elements, such as arsenic, and if necessary antimony, iron or bismuth, from valuable metal containing, such as copper containing, strongly mineral acid solutions by way of solvent extraction with organic soluti...	05/27/1997
5562848	Viscosity-stabilized amide composition, methods of preparing and using same Amide compositions useful for softening textile materials, such as fabrics. A concentrate composed of the amide softener and an alkylpolyglycoside is diluted to provide a softening solution of low viscosity stable over extended periods, which on applicati...	10/08/1996
5519124	Production of alkylpolyglycosides An improvement in the process of preparation of an alkylpolyglycoside containing a long chain alkyl group of about 10 carbon atoms or more by reaction of a saccharide and a long chain alcohol in the presence of an acid catalyst, particularly an improvemen...	05/21/1996
5514823	Bis-(alkylsalicylidene)ethylene or phenylene diamines and transition metal complexes thereof Preparation of N,N'-bis(alkylsalicylidene)ethylene or phenylene diamines, and transition metal complexes thereof, particularly copper, and their use as an additive to diesel fuel to reduce soot formation in diesel exhaust....	05/07/1996
5496932	Process for the production of alkylpolyglycoside An improved process for preparing an alkylpolyglycoside wherein the alkyl group contains about 8 to about 20 carbon atoms, prepared by reacting a saccharide and an alcohol in the presence of an acid catalyst, and subsequently removing excess unreacted alc...	03/05/1996
5470552	Nickel extraction process The recovery of nickel from aqueous ammoniacal solutions containing nickel values by extraction of the nickel values therefrom with an organic solution containing an oxime extractant and an equilibrium modifier followed by stripping of the nickel values f...	11/28/1995
5457236	Process for the production of beta-diketone In a process for preparing betadiketones which comprises an alkaline condensation of an ester and an acetophenone in the presence of an alkaline catalyst in an inert organic solvent, the improvement comprising at least one of the following conditions: (i)...	10/10/1995
5432275	Continuous bleaching of alkylpolyglycosides A continuous method of bleaching an alkylpolyglycoside, substantially free of alcohol, with peroxy compounds, preferably hydrogen peroxide, which is highly efficient to provide an unexpected high degree of color reduction from a dark brown to a light, whi...	07/11/1995
5349088	Oximation process An improved process for oximation of carbonyl compounds, such as ketones and aldehydes by oximation with hydroxylamine including oximation processes carried out in the presence of a catalytic amount of an alkyl phenol phase transfer catalyst, such as nony...	09/20/1994
5340380	Recovery of precious metal An improved process for recovery of precious metals such as gold or silver using novel ion exchange resins having aryl guanidyl functionality from aryl guanidine compounds having a pKa at 25° C. less than 13 and preferably less than 12. The resins have i...	08/23/1994
5302748	Esterification process An improved process for preparing esters of an alcohol and a carboxylic acid employing sulfuric acid in an amount effective to both catalyze the reaction and to remove or immobilize the water of reaction whereby an ester is provided in increased yield and...	04/12/1994
5300689	Oximation process An improved process for oximation of carbonyl compounds, such as ketones and aldehydes by oximation with hydroxylamine including oximation processes carried out in the presence of a catalytic amount of an acid phase transfer catalyst, such as 2-ethylhexan...	04/05/1994
5260039	Process for the two-phase extraction of metal ions from phases containing solid metal oxides, agents and the use thereof A process is disclosed for the two-phase extraction of metal ions from phases containing solid metal oxides, which is characterized in that the solid metal oxides are brought into contact with a hydroxamic acid, known per se, dissolved in a hydrophobic or...	11/09/1993
5198021	Recovery of precious metal An improved process for recovery of precious metals such as gold or silver using novel ion exchange resins having aryl guanidyl functionality from aryl guanidine compounds having a pKa at 25° C. less than 13 and preferably less than 12. The resins have i...	03/30/1993
5158603	Process of extracting anions with quaternary amines An improved extraction system employing a quaternary amine to extract anions from an aqueous solution, particularly precious metals such as gold or silver from an aqueous alkaline solution. The improvement comprises the use of a weak organic acid (a compo...	10/27/1992
5138027	Polyamide of dimer acids, alkylene diamine and polyalkylene polyamine A polyamide resin adapted for use in thermographic inks prepared from certain dimer acids and monomeric acids and a mixture of a diamine and a polyamine. The alkylene diamines and triamines, such as ethylene diamine and diethylene triamine, are preferred....	08/11/1992
5081155	Hydroxy aromatic ketones Novel hydroxy-aryl ketones are disclosed having a branched hydrocarbon chain on the aromatic nucleus ortho to the hydroxy group. The compounds were found to possess anti-microbial properties and are also useful as intermediates to the preparation of the c...	01/14/1992
5028259	Recovery of precious metal An improved process for recovery for precious metals such as gold and silver from aqueous cyanide solutions by contact with certain guanidine reagents. The guanidine reagents not only extract the precious metal but may provide advantages in selectivity of...	07/02/1991
4992200	Recovery of precious metals Recovery of precious metals such as gold and silver from aqueous cyanide solutions thereof, by contact with a reagent containing a guanidine functionality. The guanidine reagent extracts the precious metal from the aqueous solution which is subsequentily ...	02/12/1991
4977282	Production of d-alpha-tocopherol from natural plant sources Quantities of natural tocopherol can be aminoalkylated to selectively introduce functional groups onto the 5 and 7 positions of the non-alpha-tocopherol homologues. Natural d-alpha-tocopherol can then be separated from the aminoalkylated non-alpha-tocophe...	12/11/1990
4965054	Process of extraction of gallium from aqueous solutions thereof An improved process of extraction of gallium from aqueous solutions thereof to provide for recovery of the gallium in a very pure form, either as the metal or as the hydroxide. The process involves two extraction steps and two strip or scrub steps employi...	10/23/1990
4957714	Solvent extraction process An improvement is disclosed in the solvent extraction process for recovering metal values, i.e. copper, from aqueous solutions, particularly aqueous solutions, containing copper and iron which may also include chloride, and more particularly to an improve...	09/18/1990
4936999	Process for recovery of amino acids from aqueous mixtures Disclosed is a process for recovery of amino acids from aqueous mixtures. In particular, it relates to a treatment of said amino acid containing aqueous mixture prior to extraction of the amino acid with a water immiscible organic solution containing a wa...	06/26/1990
4912228	Process of extraction of amino acids from aqueous solutions thereof An improvement in the process of extraction of amino acids from aqueous solutions in which the amino acids are extracted with quaternary ammonium extractants. A pretreatment of the amino acid containing aqueous solution with a tertiary amine prior to extr...	03/27/1990
4895597	Recovery of precious metals Recovery of precious metals such as gold and silver from aqueous cyanide solutions thereof, by contact with a reagent containing a guanidine functionality. The guanidine reagent extracts the precious metal from the aqueous solution which is subsequently s...	01/23/1990
4886889	Process for recovery of an amino acid from aqueous mixtures thereof Disclosed is a process for recovery of amino acids from aqueous mixtures. In particular, it relates to a treatment of said amino acid containing aqueous mixture prior to extraction of the amino acid with a water immiscible organic solution containing a wa...	12/12/1989
4886888	Extraction of amino an acid from aqueous mixtures thereof Amino acids can be purpified and/or concentrated by extracting aqueous mixtures such as fermentation broths by contacting an aqueous mixture containing amino acids with an organic solution containing a water insoluble extractant selected from the group co...	12/12/1989

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Attorney: Szoke; Ernest G., Jaeschke; Wayne C., Span; Patrick J.