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| Number | Title | Issue Date |
| 5997602 | Aqueous fertilzer suspension containing at least phosphate ions and calcium or magnesium ions and a use of the suspension The invention relates to a stable, concentrated aqueous fertilizer suspension, which can be diluted with water to provide a working solution. The suspension contains 10 to 60% by weight of water and 40 to 90% by weight of a plant nutrient composition base... | 12/07/1999 |
| 5851260 | Suspension fertilizer suitable for irrigation fertilization, and a process for its preparation The invention relates to a stable aqueous fertilizer suspension suitable for drip irrigation, which suspension contains 5-55% by weight water and 45-95% by weight of one or several plant-nutrient containing substances, of which at least one contains water... | 12/22/1998 |
| 4515615 | Manufacturing and using nitrogen fertilizer solutions on a farm To make non-pressure nitrogenous fertilizer solutions, nitrogen oxides are prepared in a continuous process by burning ammonia in contact with a cobalt oxide catalyst started by an electric arc without preheating the gases. This burning forms nitrogen oxi... | 05/07/1985 |
| 4512794 | Manufacturing and using nitrogen fertilizer solutions on a farm To make non-pressure nitrogenous fertilizer solutions, nitrogen oxides are prepared in a continuous process by burning ammonia in contact with a cobalt oxide catalyst started by an electric arc without pre-heating the gases. This burning forms nitrogen ox... | 04/23/1985 |
| 4511389 | Manufacturing and using nitrogen fertilizer solutions on a farm To make and use nitrogenous fertilizer on a farm, nitrogen dioxide is prepared in a continuous process from air or from ammonia in a reactor, with the ammonia either being transported to the farm or being prepared on the farm in a continuous process from ... | 04/16/1985 |
| 4507139 | Acid type solid urea-nitric fertilizer The present invention relates to the reaction of phosphate rock with nitric acid and urea to produce nitrogen-phosphorus containing slurries, which slurries, in turn, may be granulated and dried to produce solid N-P fertilizer products with agronomically ... | 03/26/1985 |
| 4385920 | Granulation of potash salts A process for the granulation of potash salts to produce granules in high yield by the steps of mixing the potash salt with an inorganic phosphate binder and water, granulating the mixture and drying it.... | 05/31/1983 |
| 4340414 | Plant hibernation A plant nutrient solution has been found for bringing about hibernation of plants consisting of approximately 3 grams of calcium nitrate and 2 grams of potassium nitrate per gallon of water, said solution containing no more than trace quantities of phosph... | 07/20/1982 |
| 4334906 | Slow release soil amendment and micronutrient source Particulate, easy to handle, inexpensive combination soil amendments and micronutrient sources are disclosed along with methods for their manufacture and use. These compositions comprise highly porous sulfur particles having substantial internal surface a... | 06/15/1982 |
| 4331465 | Process for the production of NPK fertilizers resistant to smoldering decomposition at elevated temperatures The invention relates to a method of preventing smoldering decomposition of multiple-nutrient fertilizers containing ammonium nitrate at elevated temperatures by treatment of the granulated, dried and screened fertilizer with ammonia.... | 05/25/1982 |
| 4323386 | Method of manufacturing NP- or NPK-containing fertilizers from magnesium containing phosphate NP- or NPK-containing fertilizers are manufactured from low-grade phosphate ore digested by nitric acid. Substantial problems have been experienced during previous attempts to produce fertilizers from phosphate ore having a high content of magnesium. The ... | 04/06/1982 |
| 4202683 | Fertilizer Langbeinite (2MgSO4,K2 SO4) is reacted with diammonium phosphate (NH4)2 HPO4 to yield a dry farm field fertilizer of grade 21-12-7+1.22 Mg. The chemical process is also adjusted for a dry farm f... | 05/13/1980 |
| 4183738 | Granulation process and products produced thereby A granulation process for the production of high purity granules of salt material comprising: (a) a wet blend formed by intensively mixing together (i) particles of soluble fine water-soluble salt having a relatively wide size distribution over the range of fr... | 01/15/1980 |
| 4142885 | Method of preparing fertilizers with retarded nutrient release An improved process in the preparation of sustained release fertilizer compositions which comprises subjecting a preponderantly water-soluble granular fertilizer composition first to accretive granulation under accretive granulation conditions with a melt... | 03/06/1979 |
| 4081265 | Pot water A method of providing a complete treatment for containerized plants so that they need never have tap water and fertilizer applied thereto, and a water solution for use in the complete treatment method. The water solution has a pH between 5.8 and 6.4 and l... | 03/28/1978 |
| 3979198 | Polyurethane plant growth medium A plant growth medium is disclosed having a polyurethane matrix with at least 40% and preferably 50 to 55% open cells, and from about 36% to about 50% (and more for example 60%) by weight of a granular filler dispersed throughout the polyurethane matrix, ... | 09/07/1976 |
| 3967948 | Purification of phosphoric acid with urea and nitric acid My invention relates to a new method for purification of wet-process phosphoric acid with co-production of nitrogen solution. The crude acid is treated with urea by known processes to form urea phosphate free of most of the impurities in the crude acid. T... | 07/06/1976 |
