| Patent Number |
Title Of Patent |
Date Issued |
| 7501107 |
Method for obtaining precipitated calcium carbonate particles of nanometric scale structure |
Mar. 10, 2009 |
| 7455763 |
Recycling process for demetalization of hydrocarbon oil |
Nov. 25, 2008 |
| 7300539 |
Treatment of solid containing material derived from effluent |
Nov. 27, 2007 |
| 7238331 |
Process for producing nano-powders and powders of nano-particle loose aggregate |
Jul. 3, 2007 |
| 7179437 |
Feeding device and process and feeding system which utilize the feeding device |
Feb. 20, 2007 |
| 7157063 |
Process for the utilization of vanadium from chromium ore as vanadium (V) oxide |
Jan. 2, 2007 |
| 7135157 |
Process for the production of platy precipitated calcium carbonates |
Nov. 14, 2006 |
| 7128887 |
Platy precipitated calcium carbonate synthesis method |
Oct. 31, 2006 |
| 6989142 |
Precipitated calcium carbonate |
Jan. 24, 2006 |
| 6926912 |
Metal compounds, mixed or sulphated, as phosphate binders |
Aug. 9, 2005 |
| 6814947 |
Method for producing calcium compounds containing water of crystallization |
Nov. 9, 2004 |
| 6811704 |
Method for anion removal by forming chemical precipitation under an electric field and continuous process for anion removal |
Nov. 2, 2004 |
| 6800260 |
Processes for treating iron-containing waste streams |
Oct. 5, 2004 |
| 6749825 |
Mesoporous carbonates and method of making |
Jun. 15, 2004 |
| 6692710 |
Method for obtaining magnesium by leaching a laterite material |
Feb. 17, 2004 |
| 6645458 |
Method for making an aqueous sodium chloride solution |
Nov. 11, 2003 |
| 6592837 |
Narrow size distribution ground calcium carbonate compositions |
Jul. 15, 2003 |
| 6497850 |
Recovery of lithium compounds from brines |
Dec. 24, 2002 |
| 6479029 |
Micronized alkaline earth metal carbonate |
Nov. 12, 2002 |
| 6425973 |
Treatment of solid containing material derived from effluent |
Jul. 30, 2002 |
| 6294143 |
Process for the preparation of discrete particles of calcium carbonate |
Sep. 25, 2001 |
| 6280630 |
Process for the treatment of effluent streams |
Aug. 28, 2001 |
| 6267800 |
Process for producing cobalt metal powder from nickel-cobalt sulphides |
Jul. 31, 2001 |
| 6264904 |
Process for recovery of cobalt by selective precipitation of cobalt-calcium double salt |
Jul. 24, 2001 |
| 6193945 |
Method of recovering calcium from waste material or contaminated natural calcic material |
Feb. 27, 2001 |
| 6132696 |
Manufacture of precipitated calcium carbonate of improved color and stable crystalline form |
Oct. 17, 2000 |
| 5993759 |
Production of lithium carbonate from brines |
Nov. 30, 1999 |
| 5993772 |
Method for coproducing calcium carbonate and sodium hydroxide |
Nov. 30, 1999 |
| 5986133 |
Recovery of fermentation salts from dilute aqueous solutions |
Nov. 16, 1999 |
| 5961941 |
Production of precipitated calcium carbonate from papermaking sludge and sludge-derived ash |
Oct. 5, 1999 |
| 5939036 |
Manufacture of precipitated calcium carbonate |
Aug. 17, 1999 |
| 5927288 |
Hydromagnesite/magnesium hydroxide fillers for smoking article wrappers and methods for making same |
Jul. 27, 1999 |
| 5919424 |
Method of recovering minerals from papermaking sludge and sludge-derived ash |
Jul. 6, 1999 |
| 5900221 |
Process of preparing a solution of cesium and rubidium salts |
May. 4, 1999 |
| 5865898 |
Methods of biomass pretreatment |
Feb. 2, 1999 |
| 5846501 |
Process for the selective recovery of the salt constituents from used hardening shop salts which contain nitrite-nitrate |
Dec. 8, 1998 |
| 5779464 |
Calcium carbonate sorbent and methods of making and using same |
Jul. 14, 1998 |
| 5693296 |
Calcium hydroxide pretreatment of biomass |
Dec. 2, 1997 |
| 5593650 |
Method for producing a high-density saline cesium and rubidium solution |
Jan. 14, 1997 |
| 5409680 |
Purification of aqueous alkali metal chlorate solutions |
Apr. 25, 1995 |
| 5376343 |
Production of purified calcium carbonate |
Dec. 27, 1994 |
| 5356610 |
Method for removing impurities from an alkali metal chlorate process |
Oct. 18, 1994 |
| 5348689 |
Molten salt destruction of alkali and alkaline earth metals |
Sep. 20, 1994 |
| 5342600 |
Precipitated calcium carbonate |
Aug. 30, 1994 |
| 5332564 |
Process for production of rhombic shaped precipitated calcium carbonate |
Jul. 26, 1994 |
| 5268154 |
Process for disaggregating boronatrocalcite ore in an alkaline medium for the production of sodium borate and calcium borate |
Dec. 7, 1993 |
| 5230880 |
Process and device for forming calcium oxide |
Jul. 27, 1993 |
| 5207997 |
Process for producing an inorganic barium-containing solids composition |
May. 4, 1993 |
| 5204073 |
Toxicity elimination and comprehensive utilization of chrome residues |
Apr. 20, 1993 |
| 5164171 |
Removal of carbonate from caustic sulfide solution |
Nov. 17, 1992 |
