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Class Information
Number: 423/357
Name: Chemistry of inorganic compounds > Nitrogen or compound thereof (except ammonium salt of non-nitrogen acid) > Ammonia or ammonium hydroxide > From ammonium compound > Utilizing calcium compound
Description: Processes in which a compound containing the element calcium (Ca-+) is used.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7270796 |
Ammonium/ammonia removal from a stream |
Sep. 18, 2007 |
| 7229601 |
Ammonia reclamation system |
Jun. 12, 2007 |
| 6333012 |
Process for producing ammonium metavanadate |
Dec. 25, 2001 |
| 6315976 |
Method of producing potassium sulfate |
Nov. 13, 2001 |
| 6077494 |
Method for removing ammonia from ammonia contaminated fly ash |
Jun. 20, 2000 |
| 6033637 |
Method for treating combustion ashes |
Mar. 7, 2000 |
| 5449506 |
Process for producing potassium carbonate |
Sep. 12, 1995 |
| 5407655 |
Process for the removal and the recovery of ammonia from liquid waste |
Apr. 18, 1995 |
| 5387407 |
Process for the recovery of ammonia from flue gases |
Feb. 7, 1995 |
| 4915705 |
Production of silica and fluorine-containing coproducts from fluosilicic acid |
Apr. 10, 1990 |
| 4594131 |
Process for removing ammonia and acid gases from process streams |
Jun. 10, 1986 |
| 4530821 |
Bridging operational shut-downs of the ammonia washer of a plant operating according to the semi-direct technique for the removal of ammonia from coking oven gas |
Jul. 23, 1985 |
| 4328189 |
Apparatus for the granulation of precipitation products formed from ammonium compounds |
May. 4, 1982 |
| 4323430 |
Process for separating ammonia and acid gases from streams containing fixed ammonia salts |
Apr. 6, 1982 |
| 4294812 |
Recovery of ammonia from aqueous streams |
Oct. 13, 1981 |
| 4263145 |
Recovery of ammonia or amine from a cation exchange resin |
Apr. 21, 1981 |
| 4260462 |
Process for separating acid gases and ammonia from dilute aqueous solutions thereof |
Apr. 7, 1981 |
| 4187280 |
Process for recovering useable products from by-product ammonium nitrate formed in the manufacture of nuclear reactor fuels or breeder materials |
Feb. 5, 1980 |
| 4165264 |
Ammonia leaching |
Aug. 21, 1979 |
| 4111759 |
Process for separating ammonia and acid gases from waste waters containing fixed ammonia salts |
Sep. 5, 1978 |
| 4108735 |
Method for improved distillation of ammonia from weak ammonia liquor |
Aug. 22, 1978 |
| 4108734 |
Process for the distillation of weak ammonia liquor |
Aug. 22, 1978 |
| 4105754 |
Production of high purity calcium thiosulfate |
Aug. 8, 1978 |
| 4104131 |
Process for separating ammonia and acid gases from waste waters containing fixed ammonia salts |
Aug. 1, 1978 |
| 4076515 |
Method for treatment of digester supernatant and other streams in wastewater treatment facilities |
Feb. 28, 1978 |
| 4061718 |
Method for the recovery of ammonia from liquor from the filters of ammonia-soda plants |
Dec. 6, 1977 |
| 3991047 |
Process for preparing lactams |
Nov. 9, 1976 |
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