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Class Information
Number: 23/296
Name: Chemistry: physical processes > Physical processes > Crystallization > Selective
Description: Processes wherein preferential crystallization is carried out in a system containing two or more normally solid crystallizable constituents.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7540884 |
Method for performing the purifying separation of crystals out their suspension in a mother liquor |
Jun. 2, 2009 |
| 7531023 |
Method for the purification of a molten metal |
May. 12, 2009 |
| 7150766 |
Method of particle formation |
Dec. 19, 2006 |
| 7001526 |
Optical isomer separation method |
Feb. 21, 2006 |
| 6860907 |
Method of particle formation |
Mar. 1, 2005 |
| 6855176 |
Emulsion crystallisation with recycle |
Feb. 15, 2005 |
| 6558434 |
Method for cooling by altering crystal field interaction |
May. 6, 2003 |
| 6428583 |
Separation process |
Aug. 6, 2002 |
| 6364914 |
Method of crystallization with the particle size distribution being controlled |
Apr. 2, 2002 |
| 6180074 |
Method for processing flue gases containing sulphur oxides |
Jan. 30, 2001 |
| 6103139 |
Single-use encapsulated hot pack activator |
Aug. 15, 2000 |
| 5755975 |
Separation of substances from a liquid mixture by crystallization |
May. 26, 1998 |
| 5614104 |
Process and apparatus for the continuous determination of the sylvine saturation of hot solutions for monitoring and controlling the hot solubilizing of a crude potash salt |
Mar. 25, 1997 |
| 5575923 |
Salt basket for crystallizer and method of use in zero liquid discharge industrial facilities |
Nov. 19, 1996 |
| 5505924 |
Multistage countercurrent recrystallization process and apparatus for performing same |
Apr. 9, 1996 |
| 5447541 |
Process for separating and purifying substances by crystallization from the melt under high pressure |
Sep. 5, 1995 |
| 5448005 |
Crystallization of paraxlene from high purity paraxylene feeds |
Sep. 5, 1995 |
| 5447542 |
Process for separating and purifying substances by crystallization from the melt |
Sep. 5, 1995 |
| 5435919 |
Optically-active, amhiphilic, water-soluble free-radical addition copolymers and their use in the resolution of racemic mixtures |
Jul. 25, 1995 |
| 5433932 |
Process to recover azide values from azide-based gas generating materials |
Jul. 18, 1995 |
| 5332674 |
Process for preparing (R) and (S)-1,2-isopropylideneglycerol by crystallizing racemic benzoyl ester |
Jul. 26, 1994 |
| 5240467 |
Multistage countercurrent recrystallization process and apparatus for performing same |
Aug. 31, 1993 |
| 5230769 |
Process and apparatus for separating substances by crystallization |
Jul. 27, 1993 |
| 5154805 |
Method of preparing chlorate |
Oct. 13, 1992 |
| 5090965 |
Process for the separation of substances by cooling crystallization |
Feb. 25, 1992 |
| 5084260 |
Method for producing pure boric acid |
Jan. 28, 1992 |
| 5062862 |
Process and apparatus for recovering a pure substance from a liquid mixture by crystallization |
Nov. 5, 1991 |
| 4975200 |
Potassium fluoride removal from potassium chloride |
Dec. 4, 1990 |
| 4956157 |
Process for separating salts in seawater |
Sep. 11, 1990 |
| 4938934 |
Recovery of cesium chloride from pollucite ore |
Jul. 3, 1990 |
| 4734102 |
Process for concentrating a suspension |
Mar. 29, 1988 |
| 4727218 |
Procedure and means for separating or purifying organic substances |
Feb. 23, 1988 |
| 4723962 |
Process for recovering lithium from salt brines |
Feb. 9, 1988 |
| 4690725 |
Purification of Cd and Te by zone refining |
Sep. 1, 1987 |
| 4685935 |
Process for producing pure magnesium sulphite |
Aug. 11, 1987 |
| 4666456 |
Process for the continuous partial crystallization and the separation of a liquid mixture |
May. 19, 1987 |
| 4650658 |
Stable crystals of sodium bromite trihydrate |
Mar. 17, 1987 |
| 4632809 |
Apparatus for the crystallization/separation of material mixtures |
Dec. 30, 1986 |
| 4590058 |
Process for producing high purity solutions of alkali metal hydrosulfites |
May. 20, 1986 |
| 4568353 |
Process of producing coarse, pure potassium chloride crystals |
Feb. 4, 1986 |
| 4472361 |
Method of recovering alumina values from a starting solid mixture comprising AlCl.sub.3 and NaCl |
Sep. 18, 1984 |
| 4451383 |
Recyclable hot pad |
May. 29, 1984 |
| 4417912 |
Method of producing crystallized glass from phosphate glass |
Nov. 29, 1983 |
| 4401531 |
Process for the production of electrolytic zinc or high purity zinc salts from secondary zinc raw-materials |
Aug. 30, 1983 |
| 4331556 |
Heat storage material |
May. 25, 1982 |
| 4312847 |
Silicon purification system |
Jan. 26, 1982 |
| 4312849 |
Phosphorous removal in silicon purification |
Jan. 26, 1982 |
| 4312848 |
Boron removal in silicon purification |
Jan. 26, 1982 |
| 4312846 |
Method of silicon purification |
Jan. 26, 1982 |
| 4298423 |
Method of purifying silicon |
Nov. 3, 1981 |
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