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Class Information
Number: 423/566.2
Name: Chemistry of inorganic compounds > Sulfur or compound thereof > Binary compound > Sulfide of alkali metal
Description: Product or process in which the compound is a sulfide of an alkali metal.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7604785 |
Process for the recovery of elemental sulphur from residues produced in hydrometallurgical processes |
Oct. 20, 2009 |
| 7431902 |
Separation of ammonia from sulfur compounds |
Oct. 7, 2008 |
| 7229602 |
Method of preparing metal chalcogenide particles |
Jun. 12, 2007 |
| 7101520 |
High luminescence phosphor particles and methods for producing the particles |
Sep. 5, 2006 |
| 7011806 |
Spray drying process for producing anhydrous alkali sulfide |
Mar. 14, 2006 |
| 6875414 |
Polysulfide measurement methods using colormetric techniques |
Apr. 5, 2005 |
| 6582675 |
Method for the preparation of anhydrous sodium sulfide |
Jun. 24, 2003 |
| 6555078 |
Method of preparing lithium salts |
Apr. 29, 2003 |
| 6503474 |
Process for the preparation of anhydrous sodium sulfide |
Jan. 7, 2003 |
| 6372156 |
Methods of chemically converting first materials to second materials utilizing hybrid-plasma systems |
Apr. 16, 2002 |
| 6337062 |
Method for the production of anhydrous alkali metal sulfide and alkali metal sulfide solution |
Jan. 8, 2002 |
| 6217843 |
Method for preparation of metal intercalated fullerene-like metal chalcogenides |
Apr. 17, 2001 |
| 6066752 |
Process for producing sulfur-containing organosilicon compounds and synthetic intermediates thereof |
May. 23, 2000 |
| 5972165 |
Method of producing oxidized white liquor using dregs containing carbon particles |
Oct. 26, 1999 |
| 5958281 |
Lithium ion-conductive solid electrolyte and method for producing the same |
Sep. 28, 1999 |
| 5879830 |
Process for regenerating sodium sulphide from the sodium sulphate which forms in treating lead paste from exhausted batteries |
Mar. 9, 1999 |
| 5833718 |
Sodium potassium sulfide composition and method for preparing same |
Nov. 10, 1998 |
| 5508012 |
Methods for recovering sodium sulfides from a sulfur scavenging reaction |
Apr. 16, 1996 |
| 5455206 |
Corrosion resistant ceramic materials |
Oct. 3, 1995 |
| 5328677 |
Recovery of sulfides from tannery waste liquor |
Jul. 12, 1994 |
| 5205908 |
Purification of process gas from a partial combustion of black liquor |
Apr. 27, 1993 |
| 5173088 |
Process for preparing crystals of anhydrous sodium sulfide |
Dec. 22, 1992 |
| 5128064 |
Cadmium sulfide membranes |
Jul. 7, 1992 |
| 5080881 |
Method of preparing lower sodium polysulfides from higher sodium polysulfides and sodium |
Jan. 14, 1992 |
| 5075098 |
Method of preparing Na.sub.2 S (II) |
Dec. 24, 1991 |
| 5071632 |
Process for preparing crystals of anhydrous sodium sulfide |
Dec. 10, 1991 |
| 5039506 |
Method of preparing NA2S (I) |
Aug. 13, 1991 |
| 5039505 |
Method of preparing Na.sub.2 S (III) |
Aug. 13, 1991 |
| 4740473 |
Sodium sulfide analyzer |
Apr. 26, 1988 |
| 4557914 |
Process for producing substances optically transparent to infrared rays |
Dec. 10, 1985 |
| 4523043 |
Reagent and method for decomposing organosulfur compounds |
Jun. 11, 1985 |
| 4441923 |
Integrated process using non-stoichiometric sulfides or oxides of potassium for making less active metals and hydrocarbons |
Apr. 10, 1984 |
| 4439411 |
Production of sodium hydrosulfide |
Mar. 27, 1984 |
| 4395385 |
Process for removing hydrogen sulfide from sour gas streams |
Jul. 26, 1983 |
| 4243645 |
All dry solid potassium seed regeneration system for magnetohydrodynamic power generation plant |
Jan. 6, 1981 |
| 4225571 |
Electrowinning of metal from sulphide ores and recovery of water soluble sulphides |
Sep. 30, 1980 |
| 4210526 |
Desulfurizing fossil fuels |
Jul. 1, 1980 |
| 4198385 |
Reduction of sodium sulfate to sodium sulfide |
Apr. 15, 1980 |
| 4147612 |
Regeneration of alkali metal sulfides from alkali metal hydrosulfides |
Apr. 3, 1979 |
| 4147611 |
Regeneration of alkali metal sulfides from alkali metal hydrosulfides |
Apr. 3, 1979 |
| 4126666 |
Process for producing high purity lithium sulfide |
Nov. 21, 1978 |
| 4029741 |
Recovery of antimony sulfides |
Jun. 14, 1977 |
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