| Patent Number |
Title Of Patent |
Date Issued |
| 7258848 |
Process for scrubbing ammonia from acid gases comprising ammonia and hydrogen sulfide |
Aug. 21, 2007 |
| 7204968 |
Method of producing heat energy |
Apr. 17, 2007 |
| 6893494 |
Stable metal zirconium phosphates for color applications |
May. 17, 2005 |
| 6565756 |
Method for the conditioning of phosphoric acid |
May. 20, 2003 |
| 6280494 |
Method for producing fertilizer grade DAP having an increased nitrogen concentration in a spray column |
Aug. 28, 2001 |
| 6117406 |
Process for manufacturing ammonium salts |
Sep. 12, 2000 |
| 5820632 |
Prepared calcium phosphate composition and method |
Oct. 13, 1998 |
| 5814292 |
Comprehensive energy producing methods for aqueous phase oxidation |
Sep. 29, 1998 |
| 5443808 |
Method of producing alkali metal phosphate |
Aug. 22, 1995 |
| 5336264 |
Situ prepared calcium phosphate composition and method |
Aug. 9, 1994 |
| 5244645 |
Process for removing NH.sub.3 from a liquid stream |
Sep. 14, 1993 |
| 5124137 |
Process for the preparation of alkali metal phosphate solutions |
Jun. 23, 1992 |
| 5114460 |
Production of low-chloride alkali metal phosphates |
May. 19, 1992 |
| 5022913 |
Stabilized ammonium orthophosphate suspensions |
Jun. 11, 1991 |
| 4919906 |
Processes and equipment for production of elemental phosphorus and thermal phosphoric acid |
Apr. 24, 1990 |
| 4904459 |
Process for working up dusts which are produced in the electrothermal production of phosphorus |
Feb. 27, 1990 |
| 4853200 |
Continuous process for preparing sodium orthophosphate slurries from natural soda ash orthophosphoric acid |
Aug. 1, 1989 |
| 4836995 |
Process for the manufacture of monopotassium phosphate |
Jun. 6, 1989 |
| 4751066 |
Process for preparing alkali metal phosphate |
Jun. 14, 1988 |
| 4721519 |
Stable ammonium polyphosphate liquid fertilizer from merchant grade phosphoric acid |
Jan. 26, 1988 |
| 4720598 |
Process for preparing a basic lithium phosphate catalyst for the isomerization of alkene oxides |
Jan. 19, 1988 |
| 4678650 |
Process for making an alkali phosphate solution |
Jul. 7, 1987 |
| 4676963 |
Manufacture of sodium tripolyphosphate from wet acid |
Jun. 30, 1987 |
| 4662929 |
Method for recovering nutrients from the flue gases of a fertilizer plant |
May. 5, 1987 |
| 4661331 |
Continuous process for preparing sodium orthophosphate slurries from natural soda ash and orthophosphoric acid |
Apr. 28, 1987 |
| 4640824 |
Process for making alkali metal phosphate solutions containing little fluorine |
Feb. 3, 1987 |
| 4637921 |
Process for producing ammonium polyphosphate |
Jan. 20, 1987 |
| 4632813 |
Process for the production of water soluble ammonium phosphates |
Dec. 30, 1986 |
| 4632812 |
Process for making alkali metal phosphate solutions containing little vanadium |
Dec. 30, 1986 |
| 4610853 |
Process for producing purified monoammonium phosphate from wet process phosphoric acid |
Sep. 9, 1986 |
| 4610862 |
Process for producing purified diammonium phosphate from wet process phosphoric acid |
Sep. 9, 1986 |
| 4596703 |
Process for purifying wet-processed phosphoric acid |
Jun. 24, 1986 |
| 4565680 |
Recovery of phosphorus and aluminum from spent acid from the bright-dip aluminum finishing process |
Jan. 21, 1986 |
| 4556548 |
Process for purifying wet-processed phosphoric acid |
Dec. 3, 1985 |
| 4540557 |
Process for reducing the fluorine content in wet-processed phosphoric acid |
Sep. 10, 1985 |
| 4537615 |
Fertilizer from phosphorus furnace waste stream |
Aug. 27, 1985 |
| 4522638 |
Method and apparatus for regulating the NH.sub.3 content in scrubbing liquid used in a gas scrubbing process |
Jun. 11, 1985 |
| 4514365 |
Process for recovering a uranium-containing concentrate and purified phosphoric acid from a wet process phosphoric acid containing uranium |
Apr. 30, 1985 |
| 4511388 |
Production of high-analysis ammonium orthophosphate suspension fertilizers by a new batch-type process |
Apr. 16, 1985 |
| 4495165 |
Method of purification of phosphoric acid |
Jan. 22, 1985 |
| 4493820 |
Process for partial removing of impurities from a wet process phosphoric acid |
Jan. 15, 1985 |
| 4482466 |
Heat pumping process based on the principle of absorption |
Nov. 13, 1984 |
| 4469504 |
Process for the partial solubilization of phosphate rock and obtaining acid and phosphate fertilizers therefrom |
Sep. 4, 1984 |
| 4451277 |
Production of fluid fertilizer from phosphorus furnace waste stream |
May. 29, 1984 |
| 4420321 |
Process for removal of carbon black floc associated with wet-process phosphoric acid in the production of fertilizers |
Dec. 13, 1983 |
| 4390509 |
Process for manufacturing ammonium phosphate utilizing an oxalic acid acidulating process |
Jun. 28, 1983 |
| 4383847 |
Production of fluid fertilizer from phosphorus furnace waste stream |
May. 17, 1983 |
| 4377406 |
Ammonium polyphosphate sulfate fertilizers from wet-process phosphoric acid |
Mar. 22, 1983 |
| 4375980 |
Production of suspension fertilizers from orthophorphoric acid |
Mar. 8, 1983 |
| 4369168 |
Regeneration of carbon employed in the wet process production of alkali metal phosphates |
Jan. 18, 1983 |
