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Class Information
Number: 23/297
Name: Chemistry: physical processes > Physical processes > Crystallization > Selective > With extraction
Description: Processes carried out in solution, in combination with a step of physical extraction or dissolving.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7611208 |
Methods for constructing underground borehole configurations and related solution mining methods |
Nov. 3, 2009 |
| 7527773 |
Rare earth oxide nanocrystals and methods of forming |
May. 5, 2009 |
| 7507388 |
Process for production of dense soda, light soda, sodium bicarbonate and sodium silicate from solutions containing bicarbonate |
Mar. 24, 2009 |
| 7404828 |
Method for the production of particles |
Jul. 29, 2008 |
| 7001526 |
Optical isomer separation method |
Feb. 21, 2006 |
| 6855176 |
Emulsion crystallisation with recycle |
Feb. 15, 2005 |
| 6346523 |
Budesonide particles and pharmaceutical compositions containing them |
Feb. 12, 2002 |
| 6027607 |
Salt extraction process and device |
Feb. 22, 2000 |
| 5840085 |
Process for removing sodium chloride and potassium salts from ash collected from a soda recovery boiler |
Nov. 24, 1998 |
| 5503641 |
Process and apparatus for preparing a potassium chloride mixture |
Apr. 2, 1996 |
| 5104478 |
Method for making single crystals |
Apr. 14, 1992 |
| 5028302 |
Purification of chlor-alkali membrane cell brine |
Jul. 2, 1991 |
| 4997637 |
Digestive crystallizing process and apparatus for purification of KC1 |
Mar. 5, 1991 |
| 4822585 |
Silicon purification method using copper or copper-aluminum solvent metal |
Apr. 18, 1989 |
| 4734102 |
Process for concentrating a suspension |
Mar. 29, 1988 |
| 4683034 |
Process for separating dimethyl isophthalate and dimethyl orthophthalate from their mixture with dimethyl terephthalate |
Jul. 28, 1987 |
| 4657559 |
Process for seed crystal preparation for phosphoric acid crystallization |
Apr. 14, 1987 |
| 4655789 |
Phosphoric acid crystallization process |
Apr. 7, 1987 |
| 4544391 |
Method for separation of solid mixtures by simultaneous multi-stage recrystallization |
Oct. 1, 1985 |
| 4333737 |
Reclamation of materials from photoflash cartridges |
Jun. 8, 1982 |
| 4271131 |
Production of highly pure lithium chloride from impure brines |
Jun. 2, 1981 |
| 4087253 |
Method of obtaining caustic soda from a sodium chloride liquor containing sulphate ions recovered from an electrolytic cell |
May. 2, 1978 |
| 4079116 |
Process for producing ammonium heptamolybdate and/or ammonium dimolybdate |
Mar. 14, 1978 |
| 4072472 |
Production of high purity salt from high sulfate salt deposits |
Feb. 7, 1978 |
| 3994531 |
Method of solution mining potassium chloride from subterranean deposits |
Nov. 30, 1976 |
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