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Class 71/35 - Nitrogen-containing


Subclass of Class 71 - Chemistry: fertilizers
Definition: Processes, which also include inorganic N containing values,
No. of patents: 30
Last issue date: 10/02/2007


NumberTitleIssue Date
7278063Method and system for performing a hardware trace
An embodiment of the invention is a method for capturing hardware trace data. A wrap-back address space is defined and during compression mode, trace data is circularly stored in the wrap-back address space. Upon exiting compression mode, a write address is establis...
10/02/2007
7175684Prilling method
A prilling method comprising the steps of: providing a molten first component, mixing at least a second component with the molten first component, reacting the components to form a shear-thinnable mixture; and prilling the shear-thinnable mixture wherein the prillin...
02/13/2007
6852142Organic-based fertilizer
The subject invention provides methods for producing homogenous organic base fertilizer for plant nutrition and soil fertility. Also provided by the subject invention are value added fertilizer products for plant nutrition and soil fertility and concentrated liquid ...
02/08/2005
6558445Dry fertilizer compositions and method for making the same
The present invention describes a composition which has as its base a dry, granular fertilizer and to which is added a flowing agent and further to which is added a hydrophobic agent. The present invention also describes methods for making this compositio...
05/06/2003
6436165Foliar phosphate fertilizers
Foliar fertilizers which include a phosphate ester in concentrations greater than approximately 1/2 molar with water. The phosphate esters are preferably polyhydroxy alcohol orthophosphate esters, such as ethylene glycol phosphate esters. The fertilizer s...
08/20/2002
6355083Dust control composition for fertilizer and method of treatment of fertilizer
A dust control composition for and method of treating fertilizer particles, the composition comprising 10-100% by weight oxidized oil, 0-90% by weight non-oxidized oil, and 0-90% by weight wax. The fertilizer particle is selected from the group consisting...
03/12/2002
6241796Method for producing fertilizer grade DAP having an increased nitrogen concentration from recycle
A process for the preparation of granular fertilizer grade DAP (a product composed of ammonium phosphates, principally diammonium phosphate, resulting from the ammoniation of phosphoric acid, as defined in Official Publication No. 52 of the Association of...
06/05/2001
6015445Anti-caking solids
Solids having a tendency to cake are treated with distillation heavies that are liquid at about 60° C. or less and are obtained from production of a ketone having the formula: R.dbd.O, wherein R is substituted or unsubstituted, branched, straight chain or ...
01/18/2000
5997602Aqueous 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
5980601Anti-caking solids
A substantially non-caking solid is treated with distillation bottoms that are liquid at about 60° C. or less and are obtained from production of an alcohol having the formula: R2--R1--OH, wherein R1 is substituted or unsubstituted branched, straight chain or...
11/09/1999
5885320Anti-caking process
Solids that, untreated, have a tendency to cake are treated with distillation bottoms that are liquid at about 60° C. or less and are obtained from production of an alcohol having the formula: R2-R1-OH, wherein R1 is substituted or unsubstituted, branched, st...
03/23/1999
5851260Suspension 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
5849060Controlled release fertilizer and preparations thereof
The present invention relates to a controlled release fertilizer having water-soluble fertilizers as nucleus and limited-soluble plant nutrient compounds as coating layers, characterized in that more than two coating layers of limited-soluble compounds ar...
12/15/1998
5660613Anaerobic/aerobic decontamination of DDT contaminated soil by repeated anaerobic/aerobic treatments
The present invention provides a process of decontaminating soil and/or sediments containing DDT type contaminants by converting these contaminants into harmless materials thereby decontaminating the soil to whatever extent desired, either partial deconta...
08/26/1997
5186732Encapsulated slow release fertilizers
A coated product comprising a water soluble core material having a water insoluble polymeric coating encapsulating said core and a process for the production thereof. The encapsulating coating comprising a water-borne, polyvinylidene chloride-based latex ...
02/16/1993
5114460Production of low-chloride alkali metal phosphates
Potassium phosphate useful as a low-chloride content fertilizer is prepared by reacting phosphoric acid, commercial or technical grade, with fertilizer-grade potassium chloride (Muriate of Potash, 60-63% K2 O) at a reaction temperature of about...
05/19/1992
5055124Production of low-chloride fertilizers
Potassium phosphate useful as a low-chloride content fertilizer is prepared by reacting phosphoric acid, commercial or technical grade, with fertilizer-grade potassium chloride (Muriate of Potash, 60-63% K2 O) at a reaction temperature of about...
10/08/1991
5041153Lignosulfonate treated fertilizer particles
Synthetic inorganic chemical fertilizers are treated with lignosulfonate to harden and provide anti-caking and anti-dusting properties to the fertilizer particles. The fertilizer/lignosulfonate mixture includes up to about 5.0% by weight lignosulfonate on...
08/20/1991
5026417Methods and compositions for increasing the amounts of phosphorus and/or micronutrients available for plant uptake from soils
A method and composition for increasing the amounts of phosphorus and/or micronutrients available for uptake by plants from the soil. The invention involves introducing an inoculum of the fungus Penicillium bilaji into (or onto) the soil. This has the eff...
06/25/1991
4932993Batch production of suspension fertilizers using lignosulfonate
In the production of suspension fertilizers the addition of an additive comprising lignosulfonate to the wet-process acid prior to the ammoniation step prevents severe thickening of the suspension during its formation, which severe thickening is normally ...
06/12/1990
4846871Lignosulfonate treated fertilizer particles
Synthetic inorganic chemical fertilizers are treated with lignosulfonate to harden and provide anticaking and anti-dusting properties to the fertilizer particles. The fertilizer/lignosulfonate mixture includes up to about 5.0% by weight lignosulfonate on ...
07/11/1989
4662929Method for recovering nutrients from the flue gases of a fertilizer plant
The invention relates to a method of recovering nutrients from the flue gases of a fertilizer plant by exposing hot, almost water-saturated reaction gases (4) obtained from the fertilizer production process to a countercurrent scrubbing (5, 6) and by scru...
05/05/1987
4486217Compound solid fertilizer and manufacturing method thereof
A method for manufacturing a compound solid fertilizer is disclosed in which, inexpensive chlorides such as potassium chloride, ammonium chloride and so forth are used as supplementary fertilizer components to be admixed with a phosphate or silicophosphat...
12/04/1984
4482372Fluid fertilizer composition
A fluid fertilizer composition based essentially on potassium chloride and an ammonium phosphate prepared by a process which comprises comminuting a solid substance containing potassium chloride and ammonium phosphate by grinding in the presence of a satu...
11/13/1984
4323386Method 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
4202683Fertilizer
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
4152402Partial purification of wet-process phosphoric acid with acetone and ammonia
An improved process for the purification of wet-process phosphoric acid (WPPA) with acetone and ammonia. The main product is the purified acid and a byproduct is the impure acid fraction in a liquid form containing most of the impurities including the add...
05/01/1979
4019890Method for producing coated fertilizer
Granular slow-releasing fertilizers completely coated with water-resisting resin are produced in such a manner that the coated granules do not stick together, through one step operation by spraying a solution of the resin which has the property capable of...
04/26/1977
4008064Method of pan granulation
The invention provides an improved pan granulation process for the production of low-water or substantially anhydrous nitrogenous compounds. Hot nitrogenous melt and cooled particulate solids are fed to a rotating pan to form a cresent-shaped bed of rolli...
02/15/1977
 
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