Urea And Its Derivatives Patents (Class 71/28)
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Patent number: 7494525Abstract: Use of urease-inhibiting amounts of calcium polysulfide, potassium polysulfide, calcium thiosulfate, magnesium thiosulfate, and blends thereof, in combination with urea-containing fertilizer to significantly reduce potential losses of nitrogen due to ammonia volatilization.Type: GrantFiled: February 22, 2005Date of Patent: February 24, 2009Assignee: Tessenderlo Kerley, Inc.Inventors: Michael Massoud Hojjatie, John Garland Clapp, Thomas David Fairweather, Constance Lynn Frank Lockhart
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Publication number: 20090019906Abstract: The invention relates to a method for producing a fertilising agent containing urea, by means of synthesis step, an evaporation process, and a granulation unit. According to said method, a self-regulating centrifugal pump is used to reduce the dwell time and to optimise the positioning of the components of the method for transporting the product flow of the evaporation process to the granulation unit.Type: ApplicationFiled: January 15, 2005Publication date: January 22, 2009Inventor: Eugen Leopold
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Publication number: 20090013743Abstract: A water-dispersible particle for delivery of fertilizer to a plant is disclosed. After delivery wetting of the particles causes particle dispersion so as to prevent secondary pick up to the particles. Methods for making and using the water-dispersible particle are described.Type: ApplicationFiled: September 22, 2008Publication date: January 15, 2009Applicant: The Andersons, IncInventors: James R. Lynch, Timothy D. Birthisel, Chris S. Taylor
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Patent number: 7468087Abstract: Disclosed are a fertilizer containing a sparingly water-soluble phosphatic fertilizer and an urea/aliphatic aldehyde condensation product. The process for controlling inorganizing speed of urea/aliphatic aldehyde condensation product comprises adding to the urea/aliphatic aldehyde condensation product a sparingly water-soluble phosphatic fertilizer having special elution characteristics. The fertilizer of the invention and the process for controlling inorganizing speed of urea/aliphatic aldehyde condensation product of the invention make it possible to control the inorganizing speed of the condensation product without changing the particle size or form. The fertilizers of the invention or the urea/aliphatic aldehyde condensation products can provide nitrogen components to plant in accordance with the periods of culture of desired crops and a pattern of absorbing nutrition. This is effective in saving of the number of additional fertilization or nitrogen components left in soil after the period of culture.Type: GrantFiled: June 7, 2006Date of Patent: December 23, 2008Assignee: Chissoasahi Fertilizer Co., Ltd.Inventors: Atsushi Sakamoto, Noriaki Harada, Kenji Fukuda
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Publication number: 20080307845Abstract: Agricultural compositions which comprises (i) a water-soluble salt of calcium and (ii) an auxin mimic that is an aryl substituted urea, for administering calcium to plants. The compositions particularly include diphenylurea as the auxin mimic. Also formulations containing the compositions and methods of their uses are included.Type: ApplicationFiled: June 15, 2006Publication date: December 18, 2008Applicant: PLANT IMPACT PLCInventor: David Marks
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Publication number: 20080196463Abstract: A controlled release sulfur coated fertilizer with improved abrasion resistance is produced by applying a precursor coating that forms a cohesive film which adheres to the fertilizer substrate particles and to the sulfur that is subsequently applied in molten form. The improved fertilizer also optionally comprises a sealant coating applied after the molten sulfur. This invention is to the composition of the fertilizer and the method of production.Type: ApplicationFiled: February 21, 2007Publication date: August 21, 2008Inventors: Alice P. Hudson, James E. Nevin
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Patent number: 7402190Abstract: The present invention relates to a method for making formulated nitrogenous and complex fertilizers, in granule form, suitable for slowly releasing nitrogen, comprising the steps of preparing an aqueous urea/formaldehyde dispersion with a molar ratio from 0.8:1 to 2:1, adding an aqueous catalyzer solution in a weight ratio from 0.1 to 4%, controlling the pH of the aqueous dispersion to hold it within a range from 4.0 to 7.0, and supplying the aqueous dispersion to a recirculating granulating device, as a growth seed.Type: GrantFiled: August 28, 2002Date of Patent: July 22, 2008Inventors: Giancarlo Costa, Giuseppe Rizzi
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Patent number: 7402263Abstract: A trace amount of a tungstate is disclosed for inhibiting corrosion by nitrogen fertilizer solution, in particular, an ammonium nitrate fertilizer solution, (UAN) in contact with ferrous metal storage tanks, piping, and equipment surfaces. Tungstate added with a dispersant polymer is also effective for inhibiting corrosion.Type: GrantFiled: April 25, 2005Date of Patent: July 22, 2008Assignee: Nalco CompanyInventors: Craig W. Myers, Steven R. Hatch, Donald A. Johnson
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Patent number: 7396801Abstract: The present invention is an aqueous composition for controlling or eradicating moss from undesirable locations such as lawns and golf course putting greens. The composition contains a fertilizer, a metal containing salt, a surfactant or wetting agent, and optionally, an acidic pH control agent. The composition can be provided in a form to be mixed and/or diluted by the end-user or in an aqueous form ready to be sprayed onto the infected area. Since the product can be broadly applied and encourages grass growth and development, it provides significant advantages over conventional moss control products intended for spot treating only.Type: GrantFiled: March 22, 2000Date of Patent: July 8, 2008Assignee: The Penn State Research FoundationInventor: David W. Livingston
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Publication number: 20080134738Abstract: A fertilizer composition containing a urea-aldehyde polymer and boric acid wherein said boric acid is not in its salt form.Type: ApplicationFiled: December 5, 2007Publication date: June 12, 2008Applicant: HELENA HOLDING COMPANYInventors: Johnnie R. Roberts, Gregory C. Volgas
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Publication number: 20080110221Abstract: A liquid foliar feed concentrate comprising, water containing therein, i) at least one foliar feed plant nutrient which is present in an amount of at least 5% weight of active nutrient based on total weight of the composition, ii) 800 to 50,000 ppm of at least one water-soluble polymer, and iii) 800 to 250,000 ppm of at least one surfactant. The foliar feed plant nutrient is preferably selected from the group consisting of NPK nutrients, calcium containing nutrients, urea, ammonium nitrate, potassium nitrate, mono ammonium phosphate, di ammonium phosphate, micronutrients and molybdenum containing nutrients. The preparation of the liquid foliar feed concentrates is also claimed. The invention also relates to the preparation of sprayable foliar feed compositions. The liquid concentrate can be used to prepare sprayable foliar feed compositions. The invention also describes a method of foliar feeding plant(s) using the sprayable compositions.Type: ApplicationFiled: January 31, 2006Publication date: May 15, 2008Inventors: Simon Rose, Lynn Lyons, Mark Whtehead
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Patent number: 7267707Abstract: A polyurethane encapsulated, slow release fertilizer with a coating based upon an isocyanate component and an isocyanate-reactive component comprising a polyether polyol. The process for producing such particles comprises applying an isocyanate-reactive component comprising a polyether polyol onto fertilizer particles to form coated fertilizer particles, applying an isocyanate component onto said coated fertilizer particles; and forming the polyurethane encapsulated fertilizer particles.Type: GrantFiled: March 30, 2005Date of Patent: September 11, 2007Assignee: Florikan E.S.A. Corp.Inventors: Edward Rosenthal, Leon E. Padgett, Jr.
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Publication number: 20070193321Abstract: The present invention is directed to liquid fertilizer composition having a high nitrogen content comprising an aqueous mixture of a urea-formaldehyde resin and a nitrogen fertilizer source selected from the group consisting of urea, ammonium nitrate, and a mixture of urea and ammonium nitrate, wherein the liquid fertilizer possess surprisingly depressed freeze points and salt-out temperatures.Type: ApplicationFiled: October 13, 2006Publication date: August 23, 2007Applicant: Georgia-Pacific Chemicals LLCInventors: James C. Phillips, Stacey L. Wertz, Kurt D. Gabrielson
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Publication number: 20070180877Abstract: A water-dispersible particle is provided that includes a sulfate or phosphate of potash in an amount ranging from 5% to 99.9% by weight of the total dry weight of the particle. A binder component is present in an amount from 1% to 95% by weight. The sulfate or phosphate of potash and the binder component on that contact with water causes particle dispersion into more than 100 pieces. A process for making a water-dispersible particle includes mechanical aggregation of a sulfate or phosphate of potash into a pellet. A binder component is present in the particle in an amount ranging from 1% to 95% by weight. The sulfate or phosphate of potash and the binder component are present in a form such that contact with water causes particle dispersion into more than 100 pieces. The pellet is then dried and ready to be applied.Type: ApplicationFiled: February 8, 2007Publication date: August 9, 2007Inventors: Charles W. Anderson, Timothy D. Birthisel
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Patent number: 7108732Abstract: The fertilizer of the invention is a fertilizer containing a sparingly water-soluble phosphatic fertilizer and a urea/aliphatic aldehyde condensation product. The process for controlling inoganizing speed of urea/aliphatic aldehyde condensation product of the invention comprises adding to the urea/aliphatic aldehyde condensation product a sparingly water-soluble phosphatic fertilizer having special elution characteristics. The fertilizer of the invention and the process for controlling inoganizing speed of urea/aliphatic aldehyde condensation product of the invention make it possible to control the inorganizing speed of the condensation product without changing the particle size or form, that is, to control development of the efficacy of the condensation product used as a fertilizer.Type: GrantFiled: December 5, 2001Date of Patent: September 19, 2006Assignee: Chisso CorporationInventors: Atsushi Sakamoto, Noriaki Harada, Kenji Fukuda
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Patent number: 7018440Abstract: The present invention provides a granular fertilizer which is coated with a water-insoluble material layer (first water-insoluble material layer), a thermosetting resin layer (first thermosetting resin layer), a water-insoluble material layer (second water-insoluble material layer) and a thermosetting resin layer (second thermosetting resin layer) from inner to outer layers, and it can release fertilizer ingredients for a long time, by a smaller amount of coating materials than known coated fertilizers.Type: GrantFiled: July 12, 2002Date of Patent: March 28, 2006Assignee: Sumitomo Chemical Company, LimitedInventor: Nobuaki Tabei
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Patent number: 7018441Abstract: The present invention provides a granular fertilizer which is coated with a thermosetting resin layer (first thermosetting resin layer), a water-insoluble material layer and a thermosetting resin layer (second thermosetting resin layer) from inner to outer layers, and it can release fertilizer ingredients for a long time, by a smaller amount of coating materials than known coated fertilizers.Type: GrantFiled: July 24, 2002Date of Patent: March 28, 2006Assignee: Sumitomo Chemical Company, LimitedInventor: Nobuaki Tabei
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Patent number: 6987082Abstract: A controlled release product is provided having a suppressed initial release period and a predetermined longevity. The product includes a particulate water soluble core material and a semi-permeable coating layer applied on the core material for controlling the release rate of the core material.Type: GrantFiled: October 10, 2003Date of Patent: January 17, 2006Assignee: OMS Investments, Inc.Inventors: Edze Jan Tijsma, Johannes Gijsbertus Antonius Terlingen, Saskia Haas-Schrijen, Hein Herman Vriesema
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Patent number: 6953537Abstract: A corrosion inhibitor for use with Urea Ammonium Nitrate solutions is disclosed, comprising a blend of molybdate and one or more of the inorganic phosphates (including phosphates, polyphosphates, and pyrophosphates) and organic phosphates or phosphonates. Inorganic phosphates include, but are not limited to, SHMP (Sodium Hexametaphosphate) and TKPP (Tetra-Potassium Pyrophosphate). There are numerous other inorganic phosphates that will also serve as suitable secondary inhibitors. Organic phosphates or phosphonates include, but are not limited to, HEDP (1-Hydroxyethylidine-1,1-diphosphonic acid; also known as ethanol diphosphonate, acetodiphosphonic acid, or etidronic acid), ATMP or AMP (aminotri(methylenephosphonic acid)), PBTC (Phosphonobutane tricarboxylic acid), DETPMP (Diethylenetriaminepenta(methylene phosphonic acid)), and HPA (hydroxyphosphono acetic acid). There are numerous other organic phosphates and phosphonates that will also serve as suitable secondary inhibitors.Type: GrantFiled: January 23, 2003Date of Patent: October 11, 2005Inventors: Scott David Trahan, Eric Paul Mistretta
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Patent number: 6936681Abstract: A slow release, particulate urea-formaldehyde polymer useful as a fertilizer for enhancing the extended delivery of nitrogen needed for plant development and growth and a granular fertilizer made with the particulate urea-formaldehyde polymer.Type: GrantFiled: March 26, 2003Date of Patent: August 30, 2005Assignee: Georgia Pacific Resins, Inc.Inventors: Stacey L. Wertz, Kurt Gabrielson, James Wright, Paul Baxter, James Knight, C. R. Davis
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Patent number: 6936087Abstract: 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: May 16, 2002Date of Patent: August 30, 2005Assignee: Magic Green CorporationInventors: Greg Wommack, Roy M. Stephen
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Patent number: 6930139Abstract: Coatings for agricultural grade fertilizer particles and industrial grade ammonium nitrate are provided which when applied to particles form a protective film which acts as a barrier to inhibit or prevent hydrocarbon infiltration of the fertilizer particle pores and also to physically separate the fertilizer particles and hydrocarbon materials. In so doing, the coating greatly reduces the efficacy of the fertilizer particles as an oxidizing agent for use in incendiary devices, thereby deterring or preventing the use of agricultural grade fertilizers or industrial grade ammonium nitrate in creating weapons of terror.Type: GrantFiled: January 24, 2003Date of Patent: August 16, 2005Assignee: Specialty Fertilizer Products, LLCInventors: John Larry Sanders, Grigory Mazo, Jacob Mazo
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Patent number: 6889471Abstract: A stable aqueous suspension of water-soluble polyacrylamide particles is in a saturated solution of an ammonium salt. The polyacrylamide particles are characterized by a particle size of about ?150 mesh, and preferably ?270 mesh, with ?400 mesh most preferred. The suspension is at least about 2.5% by weight polyacrylamide. When the ammonium salt is ammonium sulfate, PAM concentrations as high as about 15% by weight can be achieved while still being easily flowable. The suspension is made by stirring the small particle PAM into the saturated ammonium salt solution. The PAM can be quickly dissolved to form a less concentrated PAM solution by adding the suspension to water or to a dilute solution, which can include calcium salts or other soil enhancers.Type: GrantFiled: April 26, 2001Date of Patent: May 10, 2005Inventors: Charles A. Arnold, Arthur Wallace
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Patent number: 6884756Abstract: A water-dispersible particle for delivery of nitrogen to a plant is disclosed. The water-dispersible particle also delivers an active ingredient such as a plant hormone to a desirable plant or a pesticide or herbicide to an undesirable organism. Methods for making and using the water-dispersible particle are described.Type: GrantFiled: September 16, 2002Date of Patent: April 26, 2005Assignee: The Andersons Agriservices, Inc.Inventors: James R. Lynch, Timothy Birthisel, Chris S. Taylor
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Patent number: 6830603Abstract: Volatility-inhibited fertilizers are prepared by coating granular urea with a coating that includes a binding agent having a boron anion and a hydrogen bonding group to adhere the binding agent to the granular urea. The binding agent may be an amino alcohol borate in which the amino alcohol is selected from the group consisting of ethanolamine, diethanolamine, triethanolamine, and mixtures thereof, or a borate of an amino alcohol complex of a divalent metal. The borates are preferably prepared as an aqueous solution of the amino alcohol and boric acid, or the amino alcohol, a divalent metal salt, and boric acid, with the aqueous solution being applied to the urea granules. Additional plant nutrients may also be coated onto the urea granules.Type: GrantFiled: August 7, 2002Date of Patent: December 14, 2004Assignee: Whitehurst Associates, Inc.Inventors: Garnett B. Whitehurst, Brooks M. Whitehurst
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Publication number: 20040244448Abstract: Partially hydrolyzed urea condensate-organic waste material, urea condensate-organic waste material are produced by mixing, heating and reacting urea with organic waste materials such as sewer sludge, garbage, cannery waste and composed organic material and urea. When a wet organic waste material is reacted with urea a partially hydrolyzed urea condensate is produced. When a dry organic waste material is reacted with urea a urea condensate-organic waste material is produced. The urea condensate-organic waste materials may be reacted with a phosphorus oxyacid and a potassium phosphate added to produce a urea condensate-organic waste composition. The urea condensate-organic waste products may be utilized as fertilizer or animal feed.Type: ApplicationFiled: June 3, 2004Publication date: December 9, 2004Inventor: David H. Blount
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Patent number: 6826866Abstract: The use of dilute aqueous water-soluble fertilizer compositions are disclosed to enhance the rewetting of water, uniformity and nutrient retention characteristics of initially untreated plant culture media and soil.Type: GrantFiled: September 5, 2002Date of Patent: December 7, 2004Assignee: Aquatrols Corp. of America, Inc.Inventors: Robert A. Moore, Stanley J. Kostka, Santakumari Mane, Christopher M. Miller
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Publication number: 20040237615Abstract: A method of preparing and coating fertilizer pellets is described. Fertilizer, seed or other materials are added to a blender. Powdered micronutrients are added to the blend (at any time in the process) at rates up to but not exceeding 1% of the total blend. The resulting blend is mixed for a minimum of 20 seconds resulting in an even distribution (coating) of the total blend. The blend is then packaged into bags, spreaders or trucks and stored or applied to the field. Seed or fertilizer is augured or moved via conveyors or other means into seeding equipment or a blender. The finished product is then applied to the field or stored for later applications.Type: ApplicationFiled: August 25, 2003Publication date: December 2, 2004Inventor: Kerry Green
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Patent number: 6821311Abstract: A method for manufacturing a solid product containing nitrogen and phosphor, particular a solid ammonium phosphate and/or urea ammonium phosphate product, in which method the solution containing urea and phosphoric acid is heated. Water then evaporates from the solution and the urea in the solution decomposes into ammonia and carbon dioxide. The carbon dioxide exits the reactor together with water vapor; the generated ammonia neutralizes the phosphoric acid. A suspension containing ammonium phosphate and/or urea ammonium phosphate is obtained, which is solidified, dried, crushed, ground and/or granulated. The end product as such can be used as a fertilizer or it can be used as part of a mixed fertilizer.Type: GrantFiled: April 8, 2002Date of Patent: November 23, 2004Assignee: Kemira Growhow OyInventors: Janne Karonen, Anders Weckman
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Publication number: 20040200248Abstract: This invention provides for fertilizer compositions of 3-Level Plant Nutrition and for Insitu Biosynthesis of Slow-Release Nourishment. Methods for feeding plants while simultaneously harnessing and sustaining microbes are disclosed. The invention's rejuvenating benefits of 3-Level nutrition puts an end to orchid media going bad.Type: ApplicationFiled: April 14, 2003Publication date: October 14, 2004Inventor: Leslie Kirkegaard
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Publication number: 20040163434Abstract: A fertiliser composition in the form of granules or prills where urea has been coated with wet ground sulphur. The wet ground sulphur is preferably applied serially and/or simultaneously with one or both of a nitrification inhibitor and a urease inhibitor.Type: ApplicationFiled: December 2, 2003Publication date: August 26, 2004Inventor: Bertram Francis Charles Quin
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Publication number: 20040148991Abstract: A method and apparatus for dissolving urea. In one embodiment, the method comprises the steps of providing a mixing container, depositing a predetermined amount of urea into the mixing container, and depositing a predetermined amount of water into the mixing chamber to achieve a predetermined urea/water concentration. In a preferred embodiment, the predetermined urea/water concentration is about 50/50 wt/wt. The method further comprises the steps of mixing the urea and water to form a mixture, allowing the mixture to stand until the temperature of the mixture reaches a predetermined temperature, and thereafter, resuming mixing of the mixture until the urea completely dissolves in the water.Type: ApplicationFiled: December 30, 2003Publication date: August 5, 2004Inventors: Sabeto DiRoma, Robert Roach, Frank Recchia
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Patent number: 6749660Abstract: This invention concerns the formulation and preparation of ammonium- and urea-free solid-chemical compositions for the anaerobic bioremediation of environmental contamination using the biological process of denitrification. The composition includes nitrate salts and may also include additional sources of nutrient phosphorus, potassium and trace elements. The use of complex phosphates (i.e., salts of phosphoric acid) is used as a combined binder-nutrient system. The use of complex phosphates in this manner enables the water-based agglomeration of the composition into granular forms in a manner which greatly improves upon the safety of the commonly known “Tennessee Valley Authority” type granulation processes by reducing or eliminating the use of the highly toxic and dangerous chemicals anhydrous ammonia, sulfuric acid, and phosphoric acid.Type: GrantFiled: June 4, 2001Date of Patent: June 15, 2004Assignee: Geovation Technologies, Inc.Inventor: Eric Christian Hince
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Patent number: 6749659Abstract: A fertilizer granule comprises: i) an elemental sulfur and swelling clay matrix, and ii) at least one additional fertilizer material incorporated into said matrix.Type: GrantFiled: October 9, 2001Date of Patent: June 15, 2004Assignee: Enersul, Inc.Inventors: Zhimin Yu, James B. Hyne, Mark Ernest Grist
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Publication number: 20040107753Abstract: What is described herein is an aqueous dispersion for coating water-soluble granules of a water soluble active agricultural chemical to substantially increase the rain fastness of the active. The dispersion includes by wt.Type: ApplicationFiled: December 9, 2002Publication date: June 10, 2004Applicant: ISP INVESTMENTS INC.Inventors: Kolazi S. Narayanan, Domingo I. Jon
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Publication number: 20040074272Abstract: The present invention relates to a controlled-release urea product and method of prepaing said product, which consists of urea coated with a primer of cement or an insoluble metal salt and one or more coating layers of a 20-50% rosin gum solution in fatty acid or vegetable oils at 20-80° C., and that the concentration of rosin gum in the said product may vary from 2 to 15%, and that inorganic materials such as magnesium oxide are applied in between layers of rosin gum at an inclusion level of 2-20% of said product.Type: ApplicationFiled: August 21, 2003Publication date: April 22, 2004Inventors: Fernando Basile De Castro, Peter Stockhoff
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Patent number: 6716360Abstract: A method for treating a waste stream, the method including the steps of providing a waste stream that includes waste solids suspended in water, feeding the waste stream to the top of a hydraulic downdraft column, conducting the waste stream to the bottom of the hydraulic downdraft column, conducting the waste steam to a first reaction zone, introducing nitrogen-containing oxides into the first reaction zone so that the waste stream is contacted with the nitrogen-containing oxides, conducting the waste stream up a hydraulic updraft column into a second reaction zone, where the second reaction zone is configured to provide sufficient time so that a reaction between the nitrogen-containing oxides and waste solids can take place and substantially consume the nitrogen-containing oxides, introducing oxygen gas into the waste steam after the nitrogen-containing oxides are substantially consumed, thereby providing a second reactant that reacts with waste solids suspended within the stream, conducting the stream to thType: GrantFiled: April 16, 2002Date of Patent: April 6, 2004Assignee: Eau-Viron IncorporatedInventor: James A. Titmas
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Publication number: 20040045331Abstract: A controlled release fertilizer material comprising a particulate plant nutrient surrounded by a coating which is the reaction product of a mixture comprising: a polyol, an isocyanate and an organic wax.Type: ApplicationFiled: September 11, 2003Publication date: March 11, 2004Applicant: Agrium Inc.Inventors: Albert J. Geiger, Eugene G. Stelmack, Nicolette M. Babiak
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Publication number: 20040035162Abstract: The present invention provides a liquid fertiliser comprising a mixture of a salt of phosphorous acid together with either a thiosulphate such as ammonium or potassium thiosulphate and/or a salt of salicylic acid or salicylamide. The use of this combination as a foliar spray, soil drench or irrigation component produces a greater fertiliser effect (on plant vigour and growth) and greater resistance to or control of parasitic fungal diseases, than each of the components applied individually or any combination of just two components.Type: ApplicationFiled: June 20, 2003Publication date: February 26, 2004Inventors: Richard Henry Williams, Peter Harding
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Publication number: 20040035161Abstract: The present invention relates to a culture system for plants and/or plant tissues, comprising at least one culture medium comprising one or more nutrients and a stock of one or more nutrients from which the nutrients are gradually dispensed to the culture medium. Thus is ensured that a sufficient quantity of nutrients is available in the culture system during the whole of the culture without additional manipulations of the culture system, such as adding new nutrients after a period of time, being necessary. In the case of for instance sterile culture systems, there is hereby less chance of compromising the sterility.Type: ApplicationFiled: September 2, 2003Publication date: February 26, 2004Inventor: Louis Johan Wagenaar
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Publication number: 20040031303Abstract: Volatility-inhibited fertilizers are prepared by coating granular urea with a coating that includes a binding agent having a boron anion and a hydrogen bonding group to adhere the binding agent to the granular urea. The binding agent may be an amino alcohol borate in which the amino alcohol is selected from the group consisting of ethanolamine, diethanolamine, triethanolamine, and mixtures thereof, or a borate of an amino alcohol complex of a divalent metal. The borates are preferably prepared as an aqueous solution of the amino alcohol and boric acid, or the amino alcohol, a divalent metal salt, and boric acid, with the aqueous solution being applied to the urea granules. Additional plant nutrients may also be coated onto the urea granules.Type: ApplicationFiled: August 7, 2002Publication date: February 19, 2004Inventors: Garnett B. Whitehurst, Brooks M. Whitehurst
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Publication number: 20040023809Abstract: A coated aggregate material for enhancing the extended delivery of nitrogen needed for plant development and growth, the coated aggregate material having a slow release (extended-release) nitrogen coating of a particulate UF polymer adhered to the aggregate material with an adhesive binder.Type: ApplicationFiled: March 26, 2003Publication date: February 5, 2004Applicant: Georgia-Pacific Resins, Inc.Inventors: Stacey L. Wertz, Kurt Gabrielson, James Knight, Paul Baxter, C.R. Davis, James C. Phillips, Pablo Dopico, Robbie D. Kelly, Richard Rediger, Michael J. Aron
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Patent number: 6682578Abstract: 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: September 6, 2002Date of Patent: January 27, 2004Assignee: Crystal Peak Technologies, LLCInventor: Larry P. Sower
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Patent number: 6663686Abstract: A controlled release fertilizer material comprising a particulate plant nutrient surrounded by a coating which is the reaction product of a mixture comprising: a polyol, an isocyanate and an organic wax.Type: GrantFiled: June 27, 2000Date of Patent: December 16, 2003Assignee: Agrium, Inc.Inventors: Albert J. Geiger, Eugene G. Stelmack, Nicolette M. Babiak
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Patent number: 6645267Abstract: A process for converting composted organic materials produced by optimized composting procedures into plant growing media for agronomic and other uses. The raw organic matter is first processed into compost by optimized standard methods. If desired, the raw organic matter can be of “organic” sources to provide plant growing media certifiable for use for organically grown food crops. The finished compost is screened to remove coarse particles above about 1 cm diameter, which are recycled back to the composting process. The composted material below approximately 1 cm diameter is further screened to separate out the particles below about 1 cm diameter and above 1 mm. This material is further separated into two size ranges: particles between 1 mm and up to 4 mm diameter (medium), and particles between 4 mm and 1 cm diameter (coarse).Type: GrantFiled: October 6, 2000Date of Patent: November 11, 2003Inventor: Henri Dinel
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Publication number: 20030154755Abstract: A long-term fertilizer containing nitrogen, contains a mixture of acetylene diurea and at least one other organic fertilizer containing nitrogen, such as methylene urea, isobutylidene diurea, crotonylidene diurea, oxamide, melamine, substituted triazones, ethylene diurea, triuret or mixtures of them.Type: ApplicationFiled: December 6, 2002Publication date: August 21, 2003Inventors: Klaus Horchler, Alexander Wissemeier, Reinhard Hahndel, Vilmos Czikkely, Wolfgang Weigelt, Wolfram Zerulla
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Publication number: 20030154754Abstract: The present invention relates to a method for making nitrogenous and complex fertilizers, in granule form, suitable for slowly releasing nitrogen, comprising the steps of preparing an aqueous urea/formaldehyde dispersion with a molar ratio from 0.8:1 to 2:1, adding an aqueous catalyzer solution in a weight ratio from 0.1 to 4%, controlling the pH of the aqueous dispersion to hold it within a range from 4.0 to 7.0, and supplying the aqueous dispersion to a recirculating granulating device, as a growth seed.Type: ApplicationFiled: August 28, 2002Publication date: August 21, 2003Inventors: Giancarlo Costa, Giuseppe Rizzi
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Publication number: 20030145640Abstract: The present invention is directed to new compositions of matter comprising the reaction products of a carboxylic acid and a urea having the formula 1Type: ApplicationFiled: July 29, 2002Publication date: August 7, 2003Inventor: Frank William Dean
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Publication number: 20030126900Abstract: A free-flowing fertilizer comprising:Type: ApplicationFiled: July 11, 2002Publication date: July 10, 2003Inventors: Mickey Brigance, Greg McManic
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Patent number: 6585900Abstract: A process for the treatment of sludge which produces a dry sludge free of pathogenic and non-pathogenic microorganisms enriched with nitrogen which can be used as a fertilizer, and which uses as raw materials: elemental sulfur, formaldehyde, ammonia, urea, chlorine, and sulphuric acid, and comprises the steps of feeding the sludge into a pre-dryer into which is fed a hot gas stream containing sulfur trioxide produced by the combustion and catalytic oxidation of sulfur with air and finally completely drying the sludge by feeding it into an ammoniator.Type: GrantFiled: January 31, 2001Date of Patent: July 1, 2003Inventor: José Cabello-Fuentes