Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7736412 | Gypsum fertilizer products with polymer adjuvants Improved gypsum fertilizer compositions are provided by coating of naturally-occurring or synthesized gypsum with low pH maleic-itaconic copolymers. The preferred copolymers are aqueous dispersions of acid or partial salt maleic-itaconic copolymers, and are applied ... | 06/15/2010 |
| 7686863 | Gypsum fertilizer products with polymer adjuvants Improved gypsum fertilizer compositions are provided by coating of naturally-occurring or synthesized gypsum with low pH maleic-itaconic copolymers. The preferred copolymers are aqueous dispersions of acid or partial salt maleic-itaconic copolymers, and are applied ... | 03/30/2010 |
| 6488735 | Fertilizer compound having a glass matrix A fertilizer compound having a glass matrix comprises, among the forming oxides of the glass matrix, a phosphorus pentoxide (P2 O5) as partial and/or full replacement of silica (SiO2); among the modifier oxides of the said... | 12/03/2002 |
| 6287356 | Soil conditioning agglomerates containing calcium 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... | 09/11/2001 |
| 6217629 | Phosphate sulfur fertilizer particles and methods for making same 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 ... | 04/17/2001 |
| 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 |
| 5743934 | Soil conditioning agglomerates containing cement kiln dust Mechanically strong, water-disintegrable agglomerates for use as a soil conditioner produced from dust particles emitted from kilns during the manufacture of cement and a process for forming such agglomerates are disclosed. The process comprises combining... | 04/28/1998 |
| 5653782 | Process for the manufacture of sulfur-containing fertilizers The invention relates to a process for obtaining sulfur-containing fertilizers. According to the invention, a substrate containing fertilizer particles is heated to a temperature above the melting point of sulfur and subsequently by admixing with the sulf... | 08/05/1997 |
| 5571303 | Sulfur-based fertilizer and process for production thereof A particulate sulfur-based fertilizer comprising a uniform dispersion of sulfur and at least one member selected from the group consisting of ammonium sulfate, ammonium phosphate and mixtures thereof, the sulfur having an average particle size of less tha... | 11/05/1996 |
| 5451242 | Active synthetic soil A synthetic soil/fertilizer for horticultural application having all the agronutrients essential for plant growth is disclosed. The soil comprises a synthetic apatite fertilizer having sulfur, magnesium and micronutrients dispersed in a calcium phosphate ... | 09/19/1995 |
| 5433766 | Slow-release fertilizer A synthetic apatite containing agronutrients and a method for making the apatite are disclosed. The apatite comprises crystalline calcium phosphate having agronutrients dispersed in the crystalline structure. The agronutrients can comprise potassium, magn... | 07/18/1995 |
| 5158594 | Granulated nitrogen-phosphorus-potassium-sulfur fertilizer from waste gypsum slurry Process for converting phospho-gypsum waste product from the wet process of manufacturing phosphoric acid from phosphate rock by ammoniating said product at a pH of 6.5 or less and adjusting the phosphorus and potassium values of said ammoniated product b... | 10/27/1992 |
| 5041153 | Lignosulfonate 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 |
| 5037470 | Nutritive glasses for agriculture A vitreous product which can be used in agriculture is disclosed. With the exception of nitrogen, this vitreous product contains all the major and minor mineral elements which are essential for the nutrition of plants. The vitreous products can contain the fol... | 08/06/1991 |
| 4846871 | Lignosulfonate 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 |
| 4547213 | Rock phosphate/sulfur fertilizer composition A fertilizer composition which provides high soil mobility of phosphorus comprising an intimate mixture of 1 to 100 micron size ground rock phosphate and sufficient sulfur of 1 to 5 micron size in a weight ratio of P2 O5 :S in the ra... | 10/15/1985 |
| 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 |
| 4482372 | Fluid 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 |
| 4478633 | Method for processing wastes resulting from production of phosphorus, namely, slime and off-gasses, with utilization of the resultant products The method comprises processing slime and off-gases resulting from the production of phosphorus with an aqueous solution of copper sulphate having a concentration of from 15 to 50% at a temperature within the range of from 20° to 80° C. As a result, two... | 10/23/1984 |
| 4470839 | Solid particles containing metal peroxides, their preparation and their use for the amendment of soils Solid particles of metal peroxide are coated by means of a coating agent containing a water-soluble condensed phospahte.... | 09/11/1984 |
| 4469504 | Process for the partial solubilization of phosphate rock and obtaining acid and phosphate fertilizers therefrom A rapid, low temperature process for solubilizing phosphate rocks having high content of foreign matter or a low phosphorus content to obtain: (a) a slow release fertilizer of the NP type; (b) phosphoric acid of high concentration plus MAP; and (c) DAP.... | 09/04/1984 |
| 4436546 | Fertilizer material from apatite Apatite is conventionally made into a fertilizer material by treatment with a strong acid, requiring capital-intensive industry. Hydroxyapatite is treated above 1100° C. with alkali but world reserves are problematic. The invention treats apatite at 900Â... | 03/13/1984 |
| 4398936 | Process for the preparation of a granular NPK fertilizer and granular NPK fertilizers obtained by this process Storage-stable nitrogen-phosphorous-potassium fertilizer granules and prills are made by adding to a molten or aqueous solution mixture of ammonium nitrate and ammonium phosphate, a particulate potassium salt, typically potassium chloride, in which the pa... | 08/16/1983 |
| 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 |
| 4363650 | Fertilizer material from apatite Apatite is conventionally made into a fertilizer material by treatment with a strong acid, requiring capital-intensive industry. Hydroxyapatite is treated above 1100 C. with alkali but world reserves are problematic. The invention treats apatite at 900 C.... | 12/14/1982 |
| 4337078 | Substrate for cultivation of agricultural crops and rooting of green cuttings in greenhouses and in open air A substrate for the cultivation of plants in greenhouses or outdoors comprises klinoptylolite zeolite, vermiculite and peat in specified particle size ranges and relationships, with enhanced nitrogen and phosphorus content, to provide a highly versatile a... | 06/29/1982 |
| 4336053 | Fertilizer solutions stabilized with inorganic acids A stable liquid fertilizer solution containing nitrogen, phosphorus, iron and optionally sulfur is prepared by mixing a water-soluble iron compound with ammonium polyphosphate and water to produce an iron phosphate slurry having a molar ratio of polyphosp... | 06/22/1982 |
| 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 |
| 4332609 | Fertilizing plants with polyborates A liquid fertilizer comprises a polyborate compound. The polyborate compound is formed by reacting a boric acid compound with an alkanolamine or an aliphatic polyamine.... | 06/01/1982 |
| 4321078 | Slow release fertilizer composition A slow release fertilizer composition providing to a plant a controlled amount of plant primary nutrients and micronutrients over a prolonged period of time is described. The solubility and concentration of each of the plant nutrients is determined by the... | 03/23/1982 |
| 4321077 | Method of preparation of multicomponent fertilizers The subject of the invention is the method of preparation of multicomponent fertilizers based upon the decomposition process of mineral phosphate material by ammonium sulphate and sulphuric acid. This method has application in chemical industry. The inven... | 03/23/1982 |
| 4279635 | Process for treating phosphatic clay suspensions A process for treating thickened phosphatic clay suspensions produced in the processing of phosphate ore by water beneficiation, and which have a solids content of from about 5% to about 30%. A deflocculating agent is mixed with the suspension to cause de... | 07/21/1981 |
| 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 |
| 4146383 | Combination of ground and foliar application of fertilizer Legume grain crops growing under field conditions are supplied exclusively with nutrients from the ground (N, P. K, and S) until the legumes have reached a growth stage in which the seeds are starting to fill, and then during the seed filling period the l... | 03/27/1979 |
| 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 |
| 4137063 | Production of potassium polyphosphates from potassium silicofluorides Potassium polyphosphate polymers having ratios of P2 O5 to K2 O which make them suitable as fertilizer products are prepared by reacting potassium fluosilicate also known as potassium silicofluoride with phosphoric acid an... | 01/30/1979 |
