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Class Information
Number: 423/63
Name: Chemistry of inorganic compounds > Treating mixture to obtain metal containing compound > Group vb metal (v, nb, or ta) > Ion exchanging or liquid-liquid extracting
Description: Processes which include the step of (1) attracting and retaining a component of the mixture by contact with an ion exchange substance, or (2) selectively dissolving a component in one of two immiscible liquids to effect a separation; see Glossary.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7494630 |
Method of stripping metals from organic solvents |
Feb. 24, 2009 |
| 7282187 |
Recovery of metal values |
Oct. 16, 2007 |
| 7182925 |
Tantalum concentrates dissolution and purification method |
Feb. 27, 2007 |
| 7025899 |
Concentrated solutions of oxime metal extractants and method of formulating extractant compositions therefrom |
Apr. 11, 2006 |
| 6709641 |
Method for extracting anions |
Mar. 23, 2004 |
| 6652819 |
Production of high purity vanadium compound from vanadium-containing carbonaceous residues |
Nov. 25, 2003 |
| 6576099 |
Oxygen reduced niobium oxides |
Jun. 10, 2003 |
| 6267936 |
Method for effecting solvent extraction of metal ions using hydrocarbon soluble aminomethylene phosphonic acid compounds |
Jul. 31, 2001 |
| 6180072 |
Process to recover metals from spent catalyst |
Jan. 30, 2001 |
| RE36990 |
Chemical process for the recovery of metal from an organic complex |
Dec. 19, 2000 |
| 6010676 |
Method for making a highly pure tantalum compound |
Jan. 4, 2000 |
| 5945342 |
Method for digesting spent ion exchange resins and recovering actinides therefrom using microwave radiation |
Aug. 31, 1999 |
| 5891407 |
Process for producing pure ammonium metallates |
Apr. 6, 1999 |
| 5881358 |
Composition for extracting transition metal and method for extracting transition metal using the same |
Mar. 9, 1999 |
| RE36118 |
Chemical process of separating metals from an organic complex |
Mar. 2, 1999 |
| 5866750 |
Method for removal of metal alkoxide compounds from liquid hydrocarbon |
Feb. 2, 1999 |
| 5723098 |
Process for the recovery of catalysts in adipic acid production |
Mar. 3, 1998 |
| 5682593 |
Extraction of acids and metal salts from aqueous solutions with diethyl dodecylphosphonate |
Oct. 28, 1997 |
| 5478539 |
Process for the recovery of metals |
Dec. 26, 1995 |
| 5437848 |
Recovery of metal values from process residues |
Aug. 1, 1995 |
| 5431892 |
Process for recovering valuable metal from waste catalyst |
Jul. 11, 1995 |
| 5411724 |
Method for substitution of alumina in the framework of zeolites by silicon |
May. 2, 1995 |
| 5332420 |
Chemical process of separating metals from an organic complex |
Jul. 26, 1994 |
| 5330731 |
Process for separation of zirconium-88, rubidium-83 and yttrium-88 |
Jul. 19, 1994 |
| 5296203 |
Recovery of niobium from irradiated targets |
Mar. 22, 1994 |
| 5271910 |
Process of treating metal chloride wastes |
Dec. 21, 1993 |
| 5260039 |
Process for the two-phase extraction of metal ions from phases containing solid metal oxides, agents and the use thereof |
Nov. 9, 1993 |
| 5230876 |
Removal of vanadium from phosphoric acid |
Jul. 27, 1993 |
| 5213777 |
Process for the recovery of metals |
May. 25, 1993 |
| 5209910 |
Process for the recovery and separation of tantalum and niobium |
May. 11, 1993 |
| 5194232 |
Process for the preparation of tantalum/niobium hydroxides and oxides with a low fluoride content |
Mar. 16, 1993 |
| 5190735 |
Recovery of germanium-68 from irradiated targets |
Mar. 2, 1993 |
| 5182026 |
Resins having improved exchange kinetics |
Jan. 26, 1993 |
| 5171548 |
Process for the removal of vanadium from wet process phosphoric acid |
Dec. 15, 1992 |
| 5167938 |
Process for strontium-82 separation |
Dec. 1, 1992 |
| 5141965 |
Resins having improved exchange kinetics |
Aug. 25, 1992 |
| 5112873 |
Resins having improved exchange kinetics |
May. 12, 1992 |
| 5078978 |
Pyridine-containing alkoxysilanes bonded to inorganic supports and processes of using the same for removing and concentrating desired ions from solutions |
Jan. 7, 1992 |
| 5024821 |
Solvent extraction process |
Jun. 18, 1991 |
| 5023059 |
Recovery of metal values and hydrofluoric acid from tantalum and columbium waste sludge |
Jun. 11, 1991 |
| 5006319 |
Process for removing iron, chromium and vanadium from phosphoric acid |
Apr. 9, 1991 |
| 4966761 |
Process for treatment of flyash |
Oct. 30, 1990 |
| 4965055 |
Preparation of ultra-pure metal halides |
Oct. 23, 1990 |
| 4923507 |
Process for opening ores |
May. 8, 1990 |
| 4891130 |
Process for removing metals from aluminosilicate materials |
Jan. 2, 1990 |
| 4876036 |
Process for the extraction of cations and application thereof to the treatment of aqueous effluents |
Oct. 24, 1989 |
| 4834787 |
Phosphate rock utilization |
May. 30, 1989 |
| 4830997 |
Process for regenerating used catalysts by means of hydrogen peroxide aqueous solution stabilized with an organic compound |
May. 16, 1989 |
| 4798709 |
Process for treatment of flyash |
Jan. 17, 1989 |
| 4797264 |
Recovery of metals adsorbed on chelating agents |
Jan. 10, 1989 |
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