Urea And Its Derivatives Patents (Class 71/28)
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Patent number: 6576035Abstract: Calcium cyanamide compositions and methods for their use are disclosed. The compositions and methods stabilize active ionic compositions comprising calcium cyanamide and enhance the effectiveness of calcium cyanamide alone or synergistically in combination with nitrogen containing materials such as urea and organics, for example, manures. The compositions and methods also facilitate controllable site directed delivery of the contents of the stabilized compositions. The compositions and methods are effective for fertilizing, soil amending, metal stabilizing and odor and organism inhibition. The compositions are stable, easily calibrated, and non-clogging for spray delivery to target sites.Type: GrantFiled: December 8, 2000Date of Patent: June 10, 2003Inventors: Richard O. Hartmann, Timothy G. Holt, A. Ray Shirley, Jr.
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Patent number: 6558445Abstract: 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 composition.Type: GrantFiled: March 26, 2002Date of Patent: May 6, 2003Assignee: Luzenac America, Inc.Inventor: Gregory S. Hunter
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Patent number: 6544313Abstract: A fertilizer composition that includes a plurality of particles in which the particles feature a plurality of sulfur platelets embedded within a fertilizer portion, and a method for preparing this composition in which fertilizer-containing particles are sprayed first with a sulfur spray, and then with a slurry containing fertilizer or a precursor thereof, followed by curing.Type: GrantFiled: May 16, 2001Date of Patent: April 8, 2003Assignee: Cargill, IncorporatedInventors: Lawrence Alan Peacock, Arthur Ray Shirley, Jr.
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Patent number: 6521365Abstract: A waste renewal process in which waste material is burned without causing pollution, while exhaust products are renewed by converting them to useful by-products. The process is implemented in a furnace which has evaporation, thermal decomposition, combustion, and melting zones, and the thermal decomposition exhaust gases are converted to CO2 and synthesis gas, which may be re-utilized to produce a variety of products.Type: GrantFiled: August 23, 2000Date of Patent: February 18, 2003Assignee: C&G Environmental Technology Co., Ltd.Inventor: Seok Mok Song
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Patent number: 6515177Abstract: A method of forming a methylol urea prepolymer and a particle coated in with the prepolymer. The method involves providing a source of methylol urea and a source of aldehyde and reacting the urea and the aldehyde in the presence of an excess of urea to form the methylol urea prepolymer. The coated particle is preferably a controlled-release fertilizer particle. The particle is a substrate coated with a substantially uniform coating comprising a total nitrogen content ranging from about 39N to about 42N. The coating includes a low molecular weight methylene urea compounds.Type: GrantFiled: July 2, 2001Date of Patent: February 4, 2003Assignee: The Homestead CorporationInventor: James M. O'Donnell, Sr.
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Patent number: 6500222Abstract: The present invention relates to the use of diureides of dicarboxylic acids of the formula I in which R is hydrogen or SO2O⊖M⊕, M⊕ is lithium, sodium, potassium, cesium, ammonium, copper, silver, 0.5 iron, 0.5 calcium, 0.5 magnesium, 0.5 manganese, 0.5 zinc or 0.5 cobalt and X is a saturated or monounsaturated, straight-chain or branched C1- to C8-alkyl which may be interrupted by oxygen or NH and which may have attached to it C1- to C4-alkoxy, hydroxyl and/or amino groups, as slow-release fertilizers and to novel diureides of the formula Ia in which R is SO2O⊖M⊕, M⊕ is lithium, sodium, potassium, cesium, ammonium, copper, silver, 0.5 iron, 0.5 calcium, 0.5 magnesium, 0.5 manganese, 0.5 zinc or 0.5 cobalt and n is 1, 2, 3 or 4, and a process for their preparation.Type: GrantFiled: December 3, 2001Date of Patent: December 31, 2002Assignee: BASF AktiengesellschaftInventors: Klaus Horchler von Locquenghien, Klaus Erhardt, Wolfgang Weigelt, Jürgen Dressel, Alexander Wissemeier, Frank Boerner, Gerhard Kossmehl
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Patent number: 6497741Abstract: Integrated waste treatment and fertilizer and feed supplement production methods to be implemented at organic waste source sites, at remote treatment sites, or partially at the organic waste source site and at a remote location, whether in small or large scale operations. The methods are suitable for retrofitting existing organic waste sources and for treating the organic waste generated by a single source or by a plurality of sources.Type: GrantFiled: May 7, 2002Date of Patent: December 24, 2002Assignee: Crystal Peak FarmsInventor: Larry P. Sower
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Patent number: 6489438Abstract: Fertilizer formulations comprising polysulfonic acid together with inorganic fertilizers or slurry or liquid fertilizers and one or more nitrification inhibitors.Type: GrantFiled: November 20, 2000Date of Patent: December 3, 2002Assignee: Compo Gesellschaft MbH & Co., KGInventors: Klaus Erhardt, Matthias Rädle, Vilmos Czikkely, Gerd Bühler
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Patent number: 6488734Abstract: The use of inorganic or organic polyacids for the treatment of inorganic fertilizers, in particular the use of the polyacids as a mixture with at least one nitrification inhibitor for the treatment of inorganic fertilizers; the use of selected pyrazole derivatives as nitrification inhibitor in inorganic fertilizers and also as stabilizers of liquid manure or liquid fertilizer formulations, as well as the corresponding treated inorganic fertilizers per se; and novel pyrazole derivatives which can be used as nitrification inhibitors in inorganic fertilizers and also as stabilizers of liquid manure or liquid fertilizer formulations are described.Type: GrantFiled: October 6, 2000Date of Patent: December 3, 2002Assignee: BASF AktiengesellschaftInventors: Thomas Barth, Norbert Rieber, Randall Evan Gold, Jürgen Dressel, Klaus Erhardt, Klaus Horchler von Locquengh, Edgar Leibold, Stefan Rittinger
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Patent number: 6471741Abstract: Shelf-stable soil enrichment solutions contain beneficial soil and plant microbial spores or colonies, e.g. Bacillus bacteria and/or Trichoderma fungal species, that remain at least about 90% viable for at least 12, preferably 18, months at room temperature. Preferred solutions are colloidal in nature and typically contain humic acid or other organic macromolecules, and exhibit a low salt index.Type: GrantFiled: August 5, 1998Date of Patent: October 29, 2002Inventor: Clare H. Reinbergen
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Patent number: 6464746Abstract: A process for making homogeneous granules of slow-release fertilizer to deliver high doses of slow-release nitrogen in pellets that disperse or fall apart when contacted by moisture. The method includes mixing particles of slow-release nitrogen with particles of a potassium source and particles of a phosphorus source, to make a homogeneous blend of the particles. Then, the blended particles are moistened with water or an aqueous solution of urea to moisten the homogeneous blend. After moistening, the blended particles are contacted with an aqueous suspension of urea-formaldehyde resin to bind the particles into homogeneous granules. The aqueous suspension of urea formaldehyde resin preferably has a urea:formaldehyde ratio of about 1:1.Type: GrantFiled: July 24, 1998Date of Patent: October 15, 2002Assignee: Lebanon Chemical CorporationInventors: Gary B. Neyman, Elmer A. Derr
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Patent number: 6460290Abstract: Solid surfactant-impregnated, water-soluble fertilizer compositions are disclosed together with aqueous concentrates made therefrom. The use of dilute aqueous compositions made from said concentrates to enhance the rewetting of water uniformity and nutrient retention characteristics of initially untreated plant culture media is also disclosed. The fertilizer composition solids are friable and are composed of from 65 to 99 weight percent water-soluble fertilizer; and from 1 to 35 weight percent of a surfactant system comprising water-soluble nonionic surfactant and alkyl polyglycoside in a weight ratio of from less than 2:1 to 1:5. When these solid compositions are dissolved in water to form concentrates having from 20 to 50 weight percent fertilizer, the concentrates are both single phased and extremely stable.Type: GrantFiled: July 11, 2000Date of Patent: October 8, 2002Inventors: Robert A. Moore, Stanley J. Kostka, Santakumari Mane, Christopher M. Miller
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Patent number: 6458747Abstract: A process for making a slow release high nitrogen fertilizer comprising mixing agricultural products, a surfactant and urea at elevated temperature and then pelletizing the fertilizer. Fertilizers made by the above process.Type: GrantFiled: May 10, 2001Date of Patent: October 1, 2002Inventor: Conrad J. Kulik
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Publication number: 20020134124Abstract: The present invention relates to the use of diureides of dicarboxylic acids of the formula I 1Type: ApplicationFiled: December 3, 2001Publication date: September 26, 2002Inventors: Klaus Horchler von Locquenghien, Klaus Erhardt, Wolfgang Weigelt, Jurgen Dressel, Alexander Wissemeier, Frank Boerner, Gerhard Kossmehl
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Patent number: 6432156Abstract: A method of forming a methylol prepolymer and a particle coated in with the prepolymer. The method involves providing a source of methylol urea and a source of aldehyde and reacting the urea and the aldehyde in the presence of an excess of urea to form the methylol urea prepolymer. The coated particle is preferably a controlled-release fertilizer particle. The particle is a substrate coated with a substantially uniform coating compromising a total nitrogen content ranging from about 39N to about 42N. The coating includes a low molecular weight methylene urea compounds.Type: GrantFiled: November 17, 2000Date of Patent: August 13, 2002Assignee: The Homestead Corp.Inventor: James M. O'Donnell, Sr.
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Patent number: 6413291Abstract: Mechanically strong, water-disintegrable agglomerates made from a particulate calcium source, a water-soluble binder and optionally containing a primary plant nutrient source and/or micronutrient source and a process for forming such agglomerates are disclosed. The agglomerates may be used as a soil liming agent and for introducing nutrient values into cultivated soil. Also disclosed is a method for introducing nutrient values into cultivated soil so as to inhibit leaching of the nutrient values from the soil and improve utilization of the nutrient values by plants grown in the soil.Type: GrantFiled: November 28, 2000Date of Patent: July 2, 2002Assignee: Magic Green CorporationInventors: Greg Wommack, Roy M. Stephen
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Patent number: 6409788Abstract: Integrated waste treatment and fertilizer and feed supplement production methods to be implemented at organic waste source sites, at remote treatment sites, or partially at the organic waste source site and at a remote location, whether in small or large scale operations. The methods are suitable for retrofitting existing organic waste sources and for treating the organic waste generated by a single source or by a plurality of sources.Type: GrantFiled: January 22, 1999Date of Patent: June 25, 2002Assignee: Crystal Peak FarmsInventor: Larry P. Sower
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Patent number: 6398840Abstract: A process for treating sludge comprising the addition of sulphuric acid and anhydrous ammonium to the sludge inside a granulator in order to produce an exothermic reaction which generates sufficient heat to evaporate the water contained in the sludge, thus eliminating all the pathogen and non pathogen microorganism, and producing a dry product having a low pH, free of polluting agents and a high commercial value.Type: GrantFiled: June 8, 2000Date of Patent: June 4, 2002Inventors: Pedro Orta-Castro, José Cabello-Fuentes
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Patent number: 6375969Abstract: This invention relates to certain natural diatomaceous earth granule compositions which can be broadcast, i. e., dry spread on the soil to deliver a pesticide or fertilizer. The granules retain their physical integrity when spread, and have the unique property to spontaneously disintegrate when irrigation water is applied or rainfall hits the particle. Upon wetting, the particle disintegrates (blooms) to cover the soil surface. This bloom can cover an area many times the original area covered by the granule. The granules have high loadings of the diatomaceous earth, i.e. from about 35 to about 95 weight percent and contain from about 5 to about 40 weight percent of a surfactant system which exhibits excellent disintegration; rewetting and binding properties. Bioactive compounds can be loaded at up to 60 weight percent of the granule. Bioactive compounds may be formulated products or technical grades and may be homogeneously distributed throughout the granule or spray impregnated onto the granule.Type: GrantFiled: July 6, 1999Date of Patent: April 23, 2002Assignees: Rhodia Inc., Aquatrols Holding Co., Inc.Inventors: Stanley J. Kostka, Rennan Pan, Christopher M. Miller, Norman Robert Pallas
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Patent number: 6352569Abstract: For applications as nutrient for field plants, vegetables, fruit trees and vines, and for decomposition of organic materials, like straw, composts, wood scraps and municipal wastes there is prepared a liquid fertilizer comprising from 10 up to 65% of mass of dry matter of organic residues and up to 50% of mass of dissolved urea and/or agrochemical matter containing phosphorus, the agrochemical matter being preferably in a form of suspended particles.Type: GrantFiled: January 21, 2000Date of Patent: March 5, 2002Assignee: Lear, A.S.Inventors: Zdenek Beran, Bohumil Mare{haeck over (s)}
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Publication number: 20020011087Abstract: A process for making homogeneous granules of slow-release fertilizer to deliver high doses of slow-release nitrogen in pellets that disperse or fall apart when contacted by moisture. The method includes mixing particles of slow-release nitrogen with particles of a potassium source and particles of a phosphorus source, to make a homogeneous blend of the particles. Then, the blended particles are moistened with water or an aqueous solution of urea to moisten the homogeneous blend. After moistening, the blended particles are contacted with an aqueous suspension of urea-formaldehyde resin to bind the particles into homogeneous granules. The aqueous suspension of urea formaldehyde resin preferably has a urea:formaldehyde ratio of about 1:1.Type: ApplicationFiled: July 24, 1998Publication date: January 31, 2002Inventors: GARY B. NEYMAN, ELMER A. DERR
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Patent number: 6338746Abstract: The present invention described a polymer coated fertilizer, such as urea, subsequently coated with a layer of sulfur and thereafter a further coating of polymer. Preferably, the polymer coatings are formed by the direct in situ co-polymerization of the components of the polymer on the fertilizer and on the sulfur coating. The compositions provide positive controlled release characteristics, are abrasion and impact resistant and are substantially more economical to produce than polymer coated fertilizers.Type: GrantFiled: July 23, 1999Date of Patent: January 15, 2002Assignee: RLC Technologies, L.L.C.Inventors: John H. Detrick, Garrard L. Hargrove
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Patent number: 6336949Abstract: A novel composition for a slow release nitrogenous fertilizer comprising about 0.5-1% of an inert material, 0.5-1% of essential oil or their derivatives on w/w basis and process for the preparation of the composition.Type: GrantFiled: March 5, 1999Date of Patent: January 8, 2002Assignee: Council of Scientific & Industrial ResearchInventors: Dharani Dhar Patra, Usha Kiran, Aparbal Singh, Krishna Kumar Agarwal, Suman Preet Singh Khanuja, Mohammad Anwar, Sushil Kumar
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Patent number: 6336772Abstract: Compositions for and method of degrading organic chemicals in soil. The composition is a nutrient medium serving as a substrate for micro-organisms in the soil, preferably containing a major proportion of a source of carbon skeleton and energy, a macronutrient component preferably including nitrogen and other macronutrients, and a micronutrient component, preferably also a complexing agent and a vitamin/co-factor component. This nutrient material is added to soil, e.g. soil contaminated by a pesticide, to cause proliferation of micro-organisms which are effective, or which develop effectiveness to degrade the organic chemicals. Preferably the micro-organisms are those naturally present in the soil but useful micro- organisms may be added with the nutrient medium.Type: GrantFiled: November 12, 1996Date of Patent: January 8, 2002Inventor: Thomas T. Yamashita
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Patent number: 6331198Abstract: The invention provides a synergistic composition useful as a nitrification inhibiting additive for ammonium producing fertilizers which comprises: (a) benzotriazole in the range of 2.5 to 50% (by wt % of the ammonium fertilizer), (b) metal chelating agent (cooper/nickel in the range from about 1 to 50% (by wt % of the ammonium) and ion binding compound and precursors and fertilizer.Type: GrantFiled: March 22, 1999Date of Patent: December 18, 2001Assignee: Council of Scientific & Industrial ResearchInventors: Krishnamurthy Puttan, Nadur Muddanna Nanje Gowda, Eranki Venkata Surya Prakasa Rao, Sushil Kumar
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Publication number: 20010049952Abstract: A controlled release liquid urea formaldehyde fertilizer which has a nitrogen level at least 31% and its method of manufacture.Type: ApplicationFiled: June 29, 2001Publication date: December 13, 2001Inventors: Stacey L. Wertz, Lisa M. Arthur, George E. Mirous, Kurt D. Gabrielson
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Patent number: 6325836Abstract: Mechanically strong, water-disintegrable agglomerates for use as a soil conditioner produced from cement kiln dust and other particulate calcium sources containing CaO or Ca(OH)2 and other calcium-containing compounds having the potential to be hydrated and a process for forming such agglomerates are disclosed. The process comprises combining the particulate calcium source and a water-soluble binder to produce agglomerates which are then subjected to controlled drying such that the dried agglomerates having a size ranging from −7 to +8 Tyler Standard Sieve Series exhibit an average green crush strength of at least about 2 pounds (about 0.9 kg).Type: GrantFiled: April 21, 2000Date of Patent: December 4, 2001Assignee: Magic Green CorporationInventors: Greg Wommack, Carl Holley, Eugene Greskovich
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Patent number: 6322606Abstract: The invention relates to a coated granular fertilizer having a film covering fertilizer granules. This film comprises a polyurethane resin prepared by a method comprising the steps of (a) reacting an aromatic polyisocyanate with a first polyol component (i.e., castor oil or a castor oil derivative), thereby to obtain a prepolymer having terminal isocyanate groups in the molecule; and (b) reacting the prepolymer with a second polyol component (i.e., castor oil or a castor oil derivative) and a third polyol component which is an amine having at least two hydroxyl groups in the molecule, thereby to cure the prepolymer and thus to prepare the polyurethane resin. The invention relates to another coated granular fertilizer having a film covering fertilizer granules. This film comprises a urethane resin and aqueous-fluid-absorbing particles having a particle diameter of from 1 to 200 &mgr;m. This urethane resin may be the above polyurethane resin.Type: GrantFiled: September 20, 2000Date of Patent: November 27, 2001Assignee: Central Glass Company, LimitedInventors: Haruhiko Komoriya, Kazuhiko Maeda, Masayuki Shiota, Yoshi Hirashima, Kentaro Tsutsumi, Mikio Ootani, Yukio Ikeda
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Patent number: 6315807Abstract: The invention relates to a novel formulation useful as a nitrification and urease inhibitor, said formulation comprising an effective amount of nitrogenous fertilizer, castor oil and oil derived from Artemisia annua, in an amount sufficient to enhance the nitrification activity of the formulation, a method for producing the formulation and method for applying the same to soil.Type: GrantFiled: March 28, 2000Date of Patent: November 13, 2001Assignee: Council of Scientific and Industrial ResearchInventors: Dharani Dhar Patra, Usha Kiran, Mohammed Anwar, Sukhmal Chand, Sushil Kumar
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Patent number: 6312493Abstract: The present invention relates to a solid water soluble fertilizer composition containing one or more fertilizer materials and a phosphate free, organic acid which is solid at ambient temperatures. The fertilizer materials include primary macro nutrients, secondary macro nutrients, micro nutrients and mixtures thereof. The organic acid has a water solubility of at least 10 g/l (at 25° C.) and an acidifying effect in the range of 0.5 to 1.3 g HCO3−/g acid. The acidifying effect is defined as the amount of HCO3− that can be transformed into H2CO3 per gram of acid and is calculated in accordance with the following formula: 61 ⁢ n M w , acid wherein Mw,acid is the molecular weight of said acid and n represents the number of dissociation constants (i.e., pKa values) of the acid below the value of 6.35.Type: GrantFiled: October 7, 1999Date of Patent: November 6, 2001Assignee: OMS Investments, Inc.Inventors: Michael Gustaaf Eltink, Philip van Roij, Edze Jan Tijsma, Johannes Gijsbertus Antonius Terlingen, Hendrikus Gijsbertus Adrianus van Kaathoven
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Patent number: 6312492Abstract: A process for treating animal manure, particularly poultry feces, with concentrated sulfuric acid (about 93 to 95% H2SO4). The product of the process can be used for treating agricultural soils.Type: GrantFiled: September 21, 1999Date of Patent: November 6, 2001Inventor: Harold W. Wilson
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Patent number: 6309440Abstract: Composition for and method of stimulating growth of plants, e.g. increase in crop production. The composition comprises a carbon skeleton/energy component, typically a sugar or mixture of sugars; a macronutrient component providing the elements nitrogen, phosphorus, potassium and calcium, preferably also magnesium and sulfur; a micronutrient component providing zinc, iron and manganese, preferably also copper, boron, molybdenum and cobalt. The composition also preferably contains a vitamin/cofactor component and an enhancement component. The composition may be in the form of an aqueous solution or in a form suitable for coating seeds or coating pollen. It may be applied as a foliar spray, as a soil amendment, as a root dip or as an injectable solution. Preferably where, for example, it is used as a foliar spray it is applied at intervals at different stages of growth.Type: GrantFiled: August 25, 1998Date of Patent: October 30, 2001Inventor: Thomas T. Yamashita
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Patent number: 6309439Abstract: The coated fertilizer granules are coated with a carboxyl-carrying ethylene copolymer in which the carboxyl groups may also be in the form of their salts, the carboxyl-carrying ethylene copolymer being composed of a) from 75 to 90% by weight of ethylene and b) from 10 to 25% by weight of an &agr;-olefinically unsaturated C3-C8-alkanecarboxylic acid, and those coated fertilizer granules which contain an active ingredient for crop protection being excepted.Type: GrantFiled: September 15, 2000Date of Patent: October 30, 2001Assignee: K + S AktiengesellschaftInventors: Klaus Horchler von Locquenghien, Karl Engelhardt, Eberhard Kleinbach, Michael Wolfgang Müller
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Patent number: 6293985Abstract: Fertilizer granulation method for incorporating urea directly into the matrix of fertilizer pellets. The process involves introducing the urea in a liquid form into the matrix and then progressively cooling the mixture of pellet and urea to recrystallize the urea within the matrix of the pellet. The result is a substantially harder particle relative to pretreatment hardness, reduced solubility for longer lasting pellets and substantially reduced dust and other handling problems of the formed pellets.Type: GrantFiled: April 17, 1998Date of Patent: September 25, 2001Assignee: Airborne Industrial MineralsInventor: Robin Phinney
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Patent number: 6287356Abstract: Mechanically strong, water-disintegrable agglomerates for use as a soil conditioner produced from cement kiln dust and other particulate calcium sources containing CaO or Ca(OH)2 and other calcium-containing compounds having the potential to be hydrated and a process for forming such agglomerates are disclosed. The process comprises combining the particulate calcium source and a water-soluble binder to produce agglomerates which are then subjected to controlled drying such that the dried agglomerates having a size ranging from −7 to +8 Tyler Standard Sieve Series exhibit an average green crush strength of at least about 2 pounds (about 0.9 kg).Type: GrantFiled: April 27, 1998Date of Patent: September 11, 2001Assignee: Magic Green CorporationInventors: Greg Wommack, Carl Holley, Eugene Greskovich
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Patent number: 6254655Abstract: Granular composite fertilizer compositions are prepared by applying a liquid mixture of urea and formaldehyde to a dry substrate such as a phosphorus source, a potassium source, a secondary nutrient source, a micronutrient source or mixtures thereof and reacting the liquid mixture in situ to form methylene urea reaction products which promote binding of the substrate into a granular composite while granulating the substrate at the same time that the liquid mixture reacts in order to form the granular composite fertilizer compositions.Type: GrantFiled: March 18, 1999Date of Patent: July 3, 2001Assignee: OMS Investments, Inc.Inventor: Harvey M. Goertz
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Patent number: 6231632Abstract: In one embodiment, the present invention relates to a particulate urea composition containing particulate urea; kaolin; and a dispersant, wherein the dispersant is at least one of ammonia based dispersants, sulfonate dispersants, carboxylic acid dispersants and polymeric dispersants. In another embodiment, the present invention relates to a method of making urea, involving the steps of contacting a urea process stream with a slurry comprising a liquid, kaolin, and a dispersant, wherein the dispersant is at least one of ammonia based dispersants, sulfonate dispersants, carboxylic acid dispersants and polymeric dispersants; and recovering urea.Type: GrantFiled: May 25, 1999Date of Patent: May 15, 2001Assignee: Engelhard CorporationInventors: Karen A. Gruber, Shireen A. Mamun
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Patent number: 6231633Abstract: Provided is a granular fertilizer coated with a thermosetting resin coating, characterized in that a dissolution rate of the fertilizer is retarded by containing a hydrophobic compound in at least one of the coating portion and the fertilizer portion thereof. The dissolution rate is further retarded than that of a conventional granular coated fertilizer coated with a thermosetting resin.Type: GrantFiled: May 19, 1999Date of Patent: May 15, 2001Assignee: Sumitomo Chemical Company LimitedInventors: Yasuhiro Hirano, Yutaka Yamaguchi, Hiroshi Nakamura
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Patent number: 6217629Abstract: Provided herein are novel porous phosphate sulfur fertilizer particles which are in a continuous phase, and have applications in supplying soluble phosphates to plants and crops, thus increasing the yield of such crops. Also provided are novel methods of producing such porous phosphate sulfur fertilizer particles.Type: GrantFiled: April 15, 1999Date of Patent: April 17, 2001Assignee: Rutgers, The State University of New JerseyInventor: Robert Kunin
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Patent number: 6217630Abstract: A conditioned fertilizer product is provided. The conditioned fertilizer product includes urea containing fertilizer and lactic acid derived conditioning agent. The conditioning agent is preferably included at a concentration of between about 0.1% by wt. and about 5% by wt. The conditioning agent is preferably lactic acid, lactide, and/or polylactide. A method for conditioning fertilizer is provided including a step of mixing urea containing fertilizer and conditioning agent at a temperature of between about 135° C. and about 145° C. A method for using conditioned fertilizer product is provided.Type: GrantFiled: May 3, 1999Date of Patent: April 17, 2001Assignee: Cargill, IncorporatedInventors: Michael J. Chanen, Bernhard George van Bommel, Patrick R. Gruber
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Patent number: 6179893Abstract: There is disclosed a process to produce fertilizer granules containing urea and ammonium sulfate with a high ammonium sulfate concentration of ≦60 wt. % in a fluidized bed granulator, which process comprises the steps of: a) a molten urea suspension consisting of ammonium sulfate having an average particle size of 30 to 300 &mgr;m and urea having a temperature range of 120 to 155° C. is produced, b) the molten urea suspension produced at the stage a) is then injected from below on the fine particles of urea/ammonium sulfate in a fluidized bed granulator by means of at least a nozzle, while the fluidized bed is loosened by a spouting air flow in the injection area, and subsequently, c) the fertilizer granules generated in the fluidized bed are separated and, if necessary, treated. Homogeneous urea/ammonium sulfate granules of an ammonium sulfate content between 30 and 60 wt.Type: GrantFiled: June 11, 1999Date of Patent: January 30, 2001Assignee: Toyo Engineering CorporationInventors: Horst Bendix, Heinz Lange, Klaus Sch{umlaut over (u)}bel, Hans-Joachim Wachsmuth, Tetsuzo Honda, Eiji Sakata, Genshi Nishikawa
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Patent number: 6176891Abstract: The invention relates to a coated granular fertilizer having a film covering fertilizer granules. This film comprises a polyurethane resin prepared by a method comprising the steps of (a) reacting an aromatic polyisocyanate with a first polyol component (i.e., castor oil or a castor oil derivative), thereby to obtain a prepolymer having terminal isocyanate groups in the molecule; and (b) reacting the prepolymer with a second polyol component (i.e., castor oil or a castor oil derivative) and a third polyol component which is an amine having at least two hydroxyl groups in the molecule, thereby to cure the prepolymer and thus to prepare the polyurethane resin. The invention relates to another coated granular fertilizer having a film covering fertilizer granules. This film comprises a urethane resin and aqueous-fluid-absorbing particles having a particle diameter of from 1 to 200 &mgr;m. This urethane resin may be the above polyurethane resin.Type: GrantFiled: March 26, 1998Date of Patent: January 23, 2001Assignee: Central Glass Company, LimitedInventors: Haruhiko Komoriya, Kazuhiko Maeda, Masayuki Shiota, Yoshi Hirashima, Kentaro Tsutsumi, Mikio Ootani, Yukio Ikeda
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Patent number: 6174442Abstract: An adsorbent for phosphate from aqueous medium, particularly for inorganic phosphate or phosphate bound to foodstuffs from body fluids or foodstuffs, which contains beta-iron hydroxide stabilized by carbohydrates and/or by humic acid.Type: GrantFiled: June 2, 1998Date of Patent: January 16, 2001Assignee: Vifor (International) AGInventors: Peter Geisser, Erik Philipp
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Patent number: 6171358Abstract: Homogeneous calcium nitrate based fertilizers containing sulphur, and method for their preparations. Solid gypsum and/or a slow reacting sulphate mineral is mixed with melted calcium nitrate fertilizer at a temperature of 90-110° C. and kept at this temperature for 3-15 minutes and subsequently particulated at a temperature of 80-110° C. The particulation by prilling is preformed at 95-110 ° C. and the particulation by granulation is performed at 90-110° C. The fertilizer is a homogeneous composition of a calcium nitrate fertilizer and gypsum and/or a slow reacting sulphate mineral comprising 0.1-5.0 weight % SO4—S, 14-19 weight % water soluble calcium and 16-21 weight % total calcium, and 0-3.0 weight % water soluble magnesium. The fertilizer may contain microamounts of Se and/or Co. and/or micronutrients like Mn, Cu, B and Zn.Type: GrantFiled: February 24, 1999Date of Patent: January 9, 2001Assignee: Norsk Hydro ASAInventors: Torstein Obrestad, Johanne Rødsvik, Torbjørn Legard
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Patent number: 6139596Abstract: The use of inorganic or organic polyacids for the treatment of inorganic fertilizers, in particular the use of the polyacids as a mixture with at least one nitrification inhibitor for the treatment of inorganic fertilizers; the use of selected pyrazole derivatives as nitrification inhibitor in inorganic fertilizers and also as stabilizers of liquid manure or liquid fertilizer formulations, as well as the corresponding treated inorganic fertilizers per se; and novel pyrazole derivatives which can be used as nitrification inhibitors in inorganic fertilizers and also as stabilizers of liquid manure or liquid fertilizer formulations are described.Type: GrantFiled: September 24, 1999Date of Patent: October 31, 2000Assignee: BASF AktiengesellschaftInventors: Thomas Barth, Norbert Rieber, Randall Evan Gold, Jurgen Dressel, Klaus Erhardt, Klaus Horchler von Locquengh, Edgar Leibold, Stefan Rittinger
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Patent number: 6133197Abstract: Polyurea microcapsules particularly suitable for foliar application are prepared by an interfacial polymerization process in which the polyurea is formed from an aromatic diisocyanate and optionally an aromatic polyisocyanate having 3 or more isocyanate groups, in a weight ratio (when both types of isocyanate are present) of polyisocyanate:diisocyanate of from about 1:100 to about 1:1.5, and in which the microcapsules are produced having an average particle size of from about 1 to about 5 microns.As compared to conventional liquid (e.g., emulsifiable concentrate) compositions of pesticides, the microcapsules can provide safer handling and higher loading of active ingredients, while providing substantially equivalent biological activity to the liquid compositions.Type: GrantFiled: May 21, 1997Date of Patent: October 17, 2000Assignee: ZENECA LimitedInventors: Jin-Ling Chen, Marius Rodson, Herbert B. Scher, Kuo-Shin Lee, deceased
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Patent number: 6101763Abstract: A molded fertilizer prepared by molding a fertilizer component, wherein the molded fertilizer has a secant line on the surface.Type: GrantFiled: December 1, 1998Date of Patent: August 15, 2000Assignee: Mitsubishi Chemical CorporationInventors: Hiroshi Aoki, Yukio Chiwaki, Katsutoshi Ogihara
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Patent number: 6083293Abstract: The present invention provides a method for enhanced crop production and compositions for use in the same. A two-part solution system is utilized, the two solutions being stored separately until being mixed just prior to application.The first solution includes a chelated calcium component, a humus extract component, and a urea nitrogen component in aqueous solution. The second solution includes an algae extract component, and a yeast/molasses component comprising a mixture of yeast and blackstrap molasses. The chelated calcium complex may be a liquid chelated trihydroxy-glutarate complex, and the humus component may be a liquid Leonardite humus extract material. The algae extract component, in turn, may be a fucaceae extract material, preferably a 5-25-25 ascophyllum nodosum extract fertilizer material. Application of the treatment composition may be by foliar spray, and ground treatment and seed banding may also be utilized.Type: GrantFiled: February 24, 1998Date of Patent: July 4, 2000Inventor: Virginia L. Bath
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Patent number: 6080221Abstract: A method of coating fertilizer particles exhibiting porous surfaces under vacuum to form attrition resistant controlled release particulate fertilizers, by drawing a vacuum on the fertilizer particles and applying thereto a water insoluble fluid resin at about atmospheric pressure, so that the fluid resin is forced into the porous surfaces of the fertilizer particles by differences in pressure, and then hardening the fluid resin to form a solid resin, tenaciously bonded onto, and into, the porous surfaces of the fertilizer particles. Porous surfaced water soluble, slow releasing and sulfur coated, fertilizers may be effectively coated. Granular, briquetted, compacted and other special shaped fertilizers may also be effectively vacuum coated to provide controlled release products. Pesticides may also be effectively included in these attrition resistant products. Fertilizers are provided which exhibit substantially improved resistance to attrition.Type: GrantFiled: September 17, 1999Date of Patent: June 27, 2000Assignee: Agri-Nutrients Technology Group, Inc.Inventor: William P. Moore
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Patent number: 6056801Abstract: A composition of matter is provided which comprises a peat material and an added source of nitrogen, said added source of nitrogen consisting of one of urea, diammonium phosphate, monoammonium phosphate and ammonia. A composition such as this may be used in a process for making a peat fertilizer in the form of granulars.Type: GrantFiled: January 16, 1998Date of Patent: May 2, 2000Inventors: Leon-Etienne Parent, Alexandre Mailloux, Bruno Breton