 |
|
 |
| |
 |
|
Class Information
Number: 423/21.5
Name: Chemistry of inorganic compounds > Treating mixture to obtain metal containing compound > Rare earth metal (at. no. 21, 39, or 57-71) > Ion exchanging or liquid-liquid extracting
Description: Processes which include the step of (a) attracting and retaining a compound of the mixture by contact with an ion exchange substance or (b) selectively dissolving a compound in one of two immiscible liquids to effect a separation; see Glossary.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7553461 |
Multivalent metal ion extraction using diglycolamide-coated particles |
Jun. 30, 2009 |
| 7494630 |
Method of stripping metals from organic solvents |
Feb. 24, 2009 |
| 7435399 |
Chromatographic extraction with di(2-ethylhexyl)orthophosphoric acid for production and purification of promethium-147 |
Oct. 14, 2008 |
| 7282187 |
Recovery of metal values |
Oct. 16, 2007 |
| 7157022 |
Multivalent metal ion extraction using diglycolamide-coated particles |
Jan. 2, 2007 |
| 7157003 |
Cyclic method for separating chemical elements present in an aqueous solution |
Jan. 2, 2007 |
| 7122164 |
Niobate-based octahedral molecular sieves |
Oct. 17, 2006 |
| 7101484 |
Sr-90/Y-90 radionuclide generator for production of high-quality Y-90 solution |
Sep. 5, 2006 |
| 7063792 |
Method for separating metals such as zirconium and hafnium |
Jun. 20, 2006 |
| 7025899 |
Concentrated solutions of oxime metal extractants and method of formulating extractant compositions therefrom |
Apr. 11, 2006 |
| 6974563 |
Ion exchange materials for the separation of 90Y from 90SR |
Dec. 13, 2005 |
| 6736958 |
Ion sensing method |
May. 18, 2004 |
| 6667016 |
Inorganic-organic hybrid gels for extracting species such as lanthanides and actinides, and their preparation |
Dec. 23, 2003 |
| 6657081 |
Calixarene derivatives |
Dec. 2, 2003 |
| 6630114 |
Calixarene derivatives, preparation method and use of said derivatives to extract antinides and lathanides |
Oct. 7, 2003 |
| 6350419 |
Combined supported liquid membrane/strip dispersion process for the removal and recovery of metals |
Feb. 26, 2002 |
| 6312654 |
Method of separating a trivalent actinide from a trivalent lanthanide and/or yttrium in aqueous solution |
Nov. 6, 2001 |
| 6312653 |
Method for separating actinides and lanthanides by liquid-liquid extraction using calixarenes |
Nov. 6, 2001 |
| 6306355 |
Method for separating actinides and lanthanides by membrane transport using a calixarene |
Oct. 23, 2001 |
| 6270737 |
Extraction processes and solvents for recovery of cesium, strontium, rare earth elements, technetium and actinides from liquid radioactive waste |
Aug. 7, 2001 |
| 6258333 |
Method for the simultaneous recovery of radionuclides from liquid radioactive wastes using a solvent |
Jul. 10, 2001 |
| 6214301 |
Hafnium radioisotope recovery from irradiated tantalum |
Apr. 10, 2001 |
| 6110433 |
Process for the recovery of metals from used nickel/metal/rare earth hydride storage batteries |
Aug. 29, 2000 |
| 6093376 |
Selective separation of rare earth elements by ion exchange in an iminodiacetic resin |
Jul. 25, 2000 |
| 5966584 |
Method of separating trivalent actinides from trivalent lanthanides |
Oct. 12, 1999 |
| 5965025 |
Fluid extraction |
Oct. 12, 1999 |
| 5945342 |
Method for digesting spent ion exchange resins and recovering actinides therefrom using microwave radiation |
Aug. 31, 1999 |
| 5911921 |
Non-stoichiometric ytterbium phosphate powder of low infrared reflectivity |
Jun. 15, 1999 |
| 5881358 |
Composition for extracting transition metal and method for extracting transition metal using the same |
Mar. 9, 1999 |
| 5866087 |
Calixarene derivatives, their preparation process and their use for extracting actinides and lanthanides |
Feb. 2, 1999 |
| 5826161 |
Process for the selective separation of actinides (III) and lanthanides (III) |
Oct. 20, 1998 |
| 5792357 |
Method and apparatus for back-extracting metal chelates |
Aug. 11, 1998 |
| 5787332 |
Process for recovering tantalum and/or niobium compounds from composites containing a variety of metal compounds |
Jul. 28, 1998 |
| 5770085 |
Extraction of metals and/or metalloids from acidic media using supercritical fluids and salts |
Jun. 23, 1998 |
| 5766478 |
Water-soluble polymers for recovery of metal ions from aqueous streams |
Jun. 16, 1998 |
| 5708958 |
Method of separating trivalent actinides and rare earth elements |
Jan. 13, 1998 |
| 5688975 |
Rare earth stabilized Cr/Ti substituted molecular sieves |
Nov. 18, 1997 |
| 5682593 |
Extraction of acids and metal salts from aqueous solutions with diethyl dodecylphosphonate |
Oct. 28, 1997 |
| 5678242 |
Membrane extraction with thermodynamically unstable diphosphonic acid derivatives |
Oct. 14, 1997 |
| 5639433 |
Extraction of rare earth elements using alkyl phosphinic acid or salt/alkyl or aryl phosphonic acid or ester blends as extractant |
Jun. 17, 1997 |
| 5622679 |
Extraction of rare earth elements using alkyl phosphinic acid or salt/tetraalkylammonium salt as extractant |
Apr. 22, 1997 |
| 5595714 |
Recovery of gadolinium and its complexing agents from aqueous solutions containing their complexes |
Jan. 21, 1997 |
| 5492680 |
Separation of scandium from tantalum residue using fractional liquid-liquid extraction |
Feb. 20, 1996 |
| 5470479 |
Continuous, steady-state, chromatographic separation of gadolinium isotopes |
Nov. 28, 1995 |
| 5437795 |
Chromatographic separation of erbium isotopes |
Aug. 1, 1995 |
| 5409677 |
Process for separating a radionuclide from solution |
Apr. 25, 1995 |
| 5368736 |
Process for the separation and purification of yttrium-90 for medical applications |
Nov. 29, 1994 |
| 5338520 |
Recovery of neodymium/didymium values from bastnaesite ores |
Aug. 16, 1994 |
| 5332420 |
Chemical process of separating metals from an organic complex |
Jul. 26, 1994 |
| 5332531 |
Extracting metal ions with diphosphonic acid, or derivative thereof |
Jul. 26, 1994 |
|
|
|
 |
|
 |
|
| |
Randomly Featured Patents |
|
