Quotables
"Fooling around with alternating current is just a waste of time. Nobody will use it, ever."
Thomas Edison ; 1889
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6846417 | Co-retarding agents for preparing purified brine The invention relates to a process to produce brine of improved purity by dissolving salt that contains a calcium sulfate source in water, in the presence of a retarding agent, while using one or more co-retardants to bind contaminants that could interfere with the ... | 01/25/2005 |
| 6821440 | Treatment of mineral materials A process in which material comprising an aqueous liquid with dispersed particulate solids is pumped as a fluid then allowed to stand and rigidify and the rigidification is improved whilst retaining the pump ability of the material by combining polymeric particles w... | 11/23/2004 |
| 6821427 | Methods for reducing the amount of contaminants in water In one aspect the present invention provides purification devices for reducing the amount of contaminants in water, each device includes a water-soluble flocculant disposed within a body defining a multiplicity of pores, wherein the pores have an average diameter in... | 11/23/2004 |
| 6740249 | Filtration aid for the bayer process A formulation for use as a treating agent in the Bayer process is disclosed. The formulation comprises a blend of 200-300 ppm of starch and up to 10 ppm of another polysaccharide. When added to a liquor derived from the digestion of bauxite ore in a caustic solution... | 05/25/2004 |
| 6726845 | Dextran starch and flocculant combination for improving red mud clarification The claimed invention is a method for separating Bayer process red mud from a Bayer process liquor which comprises adding to a Bayer process liquor containing red mud an effective amount of a water soluble synthetic flocculant, dextran and starch combination. The fl... | 04/27/2004 |
| 6716357 | Method of removing phosphoric acid containting wastewater A method of removing phosphoric acid contained in wastewater which comprises comprehensively immobilizing calcium or a compound thereof with a solid polymer optionally together with magnetite and contacting the calcium-containing polymer with the wastewater to react... | 04/06/2004 |
| 6527959 | Method of clarifying bayer process liquors using salicylic acid containing polymers A method of flocculating suspended solids in a Bayer process liquor comprising adding to the liquor an effective amount of a polymer comprising salicylic acid groups.... | 03/04/2003 |
| 6432315 | Process for removal of dissolved components from solution A process for removal of dissolved components of a liquid solution containing multiple components is provided. The process relates to the addition of granular cationic starch to the liquid solution, heating the resultant mixture to gelatinize the starch a... | 08/13/2002 |
| 6358364 | Method for flocculating a papermaking furnish using colloidal borosilicates The invention comprises a borosilicate retention aid composition and a method for improving the production of paper by addition of the borosilicate. The borosilicate may be utilized in conjunction with a high molecular weight synthetic flocculant and/or s... | 03/19/2002 |
| 6203711 | Method for treatment of substantially aqueous fluids derived from processing inorganic materials A process is provided which can be used, for example, to clarify substantially aqueous fluids and separate solids from the fluid. The process comprises combining the fluid with a composition which comprises an anionic silica-based colloid having an S valu... | 03/20/2001 |
| 6132625 | Method for treatment of aqueous streams comprising biosolids A process is provided which can be used to clarify substantially aqueous streams and optionally separate biosolids, especially proteins, from food processing operations which comprises contacting an aqueous stream comprising biosolids with an anionic inor... | 10/17/2000 |
| 6043405 | Formulation for neutralization of formaldehyde and method of using and disposing of the same A method and treatment composition for neutralizing formaldehdye. The treatment composition contains polyethylenimine, urea and an acid having a pH of less than 6. Treatment of formaldehyde solutions with the treatment composition results in a suspension ... | 03/28/2000 |
| 6042732 | Starch/cationic polymer combinations as coagulants for the mining industry A method for dewatering coal tailings, clean coal products and mineral slurries with an effective coagulating amount of a combination of a cationic polymer and a starch. A preferred cationic polymer is poly(dimethylaminoethylacrylate methyl chloride quate... | 03/28/2000 |
| 5800718 | Method for treating dry film stripping and developing solution A method of treating a spent dry film stripping and/or developing solution comprising the steps of adding about 0.01 to 15 grams of an aluminum source per liter of solution; adding about 0.05 to 25 grams of a metal precipitating agent per liter of solutio... | 09/01/1998 |
| 5716530 | Biopolymer use as a sand filter aid In the Bayer process for producing alumina from bauxite of the type wherein the bauxite is added to a caustic solution to produce a soluble aluminate solution and an insoluble red mud fraction which is then subjected to one or more separation steps to pro... | 02/10/1998 |
| 5667697 | Colloidal silica/polyelectrolyte blends for natural water clarification This invention relates to the clarification of natural waters containing turbidity-causing components. This method comprises the addition of a stable colloidal silica suspension and water based polymeric coagulant to the turbid water. The components of th... | 09/16/1997 |
| 5660735 | Method for removing metals from waste solutions The present invention is a method to remove metals from solutions by precipitating the metals and adding cellulosic fiber to the solution. The precipitates attach to the cellulosic fibers to form products. The products may be removed from the solution by ... | 08/26/1997 |
| 5615862 | Metal precipitation composition for treating spent dry film stripping solution A powdered composition for treating spent dry film stripping and/or developing solutions comprising: 10 to 70 percent by weight of an aluminum source, such as aluminum sulfate, aluminum chloride; and 28 to 90 percent by weight of siliceous particulates, s... | 04/01/1997 |
| 5543056 | Method of drinking water treatment with natural cationic polymers A method for treating water using natural polymers that provide an alternate and improved means to achieve enhanced coagulation is described. A method for removing particles, color, and color from drinking water, comprising adding a primary coagulant such... | 08/06/1996 |
| 5536416 | Method for removing metals from a solution The present invention is a method to remove metals from solutions by precipitating the metals and adding cellulosic fiber to the solution. The precipitates attach to the cellulosic fibers to form products. The products may be removed from the solution by ... | 07/16/1996 |
| 5433865 | Method for treating process waste streams by use of natural flocculants A method for treating cattle, fish, and poultry processing waste streams by the sequential addition of natural flocculants wherein at least one of the natural flocculants is liquid chitosan and another of the natural flocculants is an anionic natural floc... | 07/18/1995 |
| 5397479 | Composition and method for enrichment of white blood cells from whole human blood A composition and method for separating red blood cells from whole blood including a rouleaux-forming aggregator and an enhancer for enhancing the settling rate. The enhancer is a material which alters directly or indirectly the properties of the red bloo... | 03/14/1995 |
| 5346628 | Polymers for flocculating red mud from bayer process liquors Red mud is flocculated from Bayer process liquors using a polymer which contains vinylamine and/or vinylformamide.... | 09/13/1994 |
| 5320759 | Selective recovery of heavy metals using xanthates A process for selectively recovering dissolved heavy metals from a solution is disclosed that involves selectively reacting a xanthate with such dissolved heavy metals. Selective reaction of a xanthate with selected dissolved heavy metals is accomplished ... | 06/14/1994 |
| 5317071 | Aldehyde treatment system A method of converting a toxic composition containing an aldehyde to a composition which is substantially non-toxic. The aldehyde is reacted with a compound having protic oxygen or nitrogen atoms and a polyimine or polyimine derivative to absorb or swell ... | 05/31/1994 |
| 5308503 | Purification of industrial lubricating agents Use of polymeric two-phase systems for removing microbial contaminants from industrial lubricating agents, a method of purifying microbial contaminated lubricating agents by mixing the lubricating agent with a polymeric two-phase system, allowing the mixt... | 05/03/1994 |
| 5269941 | Process and apparatus for the treatment of effluents containing emulsion inks Effluent containing inks undergoes flocculation by the action of a flocculating agent, followed by the continuous centrifuging of the effluent consisting of an acceleration between 1,000 and 20,000 g, while avoiding an air-liquid interface during centrifu... | 12/14/1993 |
| 5236598 | Methods for removing solids from water-based paint systems A novel method of treating circulating water containing over-sprayed, water-borne paint, such as in a paint spray booth operation, comprises adjusting the alkalinity of the paint spray booth water to between about 20 and 600 ppm, on a calcium carbonate ba... | 08/17/1993 |
| 5057226 | Treatment of liquid including blood components A method of removing a constituent of a biological fluid including a blood component, said method including flowing the biological fluid past one side of a first semipermeable membrane, flowing solution containing a first precipitation agent past a second... | 10/15/1991 |
| 4968432 | Treatment of liquid including blood components A method of removing a constituent of a biological fluid including a blood component, said method including flowing the biological fluid past one side of a first semipermeable membrane; flowing solution containing a first precipitation agent past a second... | 11/06/1990 |
| 4839060 | Methylated starch compositions and their use as flocculating agents for mineral wastes, such as bauxite residues Modified starch compositions and their use for flocculating mineral waste residues, particularly the red mud containing alumina liquors from bauxite residues, comprising the addition to an alumina liquor of a flocculating amount of a methylated starch whi... | 06/13/1989 |
| 4767540 | Polymers containing hydroxamic acid groups for reduction of suspended solids in bayer process streams The suspended solids content of Bayer process streams is reduced by contacting said stream with a polymer which contains hydroxamic acid groups.... | 08/30/1988 |
| 4508627 | Process for making starch flocculants of improved efficiency A process for making an improved starch flocculant by heating an aqueous dispersion comprising about 4 to about 12% starch solids, lime and alum until maximum vicosity is obtained, adding a metal salt and finally effecting hydrolysis by additional heating... | 04/02/1985 |
| 4507209 | Destabilization of sludge with hydrolyzed yam starch flocculants Certain yam starches hydrolyzed in the presence of insoluble metal salts formed in situ are surprisingly effective flocculants for destabilizing dilute as well as thick sludge suspensions and are particularly effective when used in the treatment of bitumi... | 03/26/1985 |
| 4502960 | Destabilization of sludge with hydrolyzed dasheen starch flocculants Dasheen starch hydrolyzed in the presence of insoluble metal salts formed in situ is a surprisingly effective flocculant for destabilizing dilute as well as thick sludge suspensions and is particularly effective when used in the treatment of bituminous ta... | 03/05/1985 |
| 4502961 | Destabilization of sludge with hydrolyzed cassava starch flocculants Cassava starch hydrolyzed in the presence of insoluble metal salts formed in situ is a surprisingly effective flocculant for destabilizing dilute as well as thick sludge suspensions and is particularly effective when used in the treatment of bituminous ta... | 03/05/1985 |
| 4437998 | Method for treating oil sands extraction plant tailings Tailings from an oil sands hot water process extraction plant are mixed with hydrolyzed starch flocculant and transferred to a settling pond. After a residence period on the order of one year, sludge from the lower region of the settling pond is withdrawn... | 03/20/1984 |
| 4414117 | Decarbonation of tailings sludge to improve settling Carbonates and bicarbonates are removed from the sludge of tar sands tailings ponds whereby solids settle from the sludge more rapidly than in the presence of the carbonates and/or bicarbonates. Hydrolyzed starch is used as a flocculant in the process and... | 11/08/1983 |
| 4399038 | Method for dewatering the sludge layer of an industrial process tailings pond In order to compress the sludge layer of an industrial process tailings pond, in a naturally occurring fines-containing body of water, beyond the density which it will naturally reach after treatment by the addition of a specific hydrolyzed starch additiv... | 08/16/1983 |
| 4399039 | Treatment of tailings pond sludge A tailings pond sludge layer of high density and strength is obtained by treating the sludge with an additive selected from a specific family of hydrolized starch additives which impart improved permeability and shear strength characteristics to the sludg... | 08/16/1983 |
