Bizarre Patents
Reward Candy Dispenser for Personal Computers
A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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 |
| 7431845 | Method of clarifying oily waste water A method of clarifying oily waste water comprising adding to the waste water an effective clarifying amount of one or more demulsifiers selected from the group consisting of dendritic polyamines, dendritic polyamidoamines and hyperbranched polyethyleneimines and the... | 10/07/2008 |
| 7030163 | Biocidal composition A biocidal composition includes, in combination, poly(hexamethylene)biguanide, didecyldimethylammonium chloride a homogenizing agent and a flocculating agent. The biocidal composition is used to treat water to control microorganisms. ... | 04/18/2006 |
| 6635182 | Floatation process for removal of heavy metal waste and associated apparatus The present invention is a floatation process and associated apparatus for removing heavy metal waste from various effluent water streams. The process and apparatus generally introduces a population of fine diameter air bubbles and one or more flocculatin... | 10/21/2003 |
| 6613230 | Method for simultaneous removal of arsenic and fluoride from aqueous solutions A method of removing arsenic and fluoride from aqueous solutions in the same process is provided. Specifically, the pH of the aqueous solution is adjusted to a pH in the range of about 5 to 8. A combination of calcium salts, and ferric or aluminum salts a... | 09/02/2003 |
| 6491827 | Process for reducing true color in waste liquids Compositions of aluminum chlorohydrate and high molecular weight branched epichlorohydrin amine condensate polymers are applied to waste liquids, such as pulp and paper mill effluents having a lignin content, to reduce true color. The branched epichlorohy... | 12/10/2002 |
| 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 |
| 6325936 | Process for treating waste water containing a resin A process for treating waste water containing a resin is disclosed, which includes the steps of adding a polyamine compound to waste water containing at least a resin to coagulate at least water-insoluble matter in the water to form coagulated particles, ... | 12/04/2001 |
| 6258277 | Composition and method for simultaneously precipitating metal ions from semiconductor wastewater and enhancing microfilter operation The simultaneous precipitation of soluble heavy metal ions from semiconductor wastewater containing abrasive solids and enhancement of microfilter operation is achieved through the addition of an effective amount of a water-soluble polymer containing dith... | 07/10/2001 |
| 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 |
| 6177017 | Polymers for chemical treatment and precipitation of soluble metal cyanide and oxoanion compounds from waste water A method for the removal of metal cyanides or oxoanions from aqueous streams such as waste water streams with compounds containing 1,4-diazabicyclo[2.2.2]octane. Preferred compounds are polymers formed by free radical polymerization of N-4-vinyl benzyl-N | 01/23/2001 |
| 6140130 | Detection and removal of copper from wastewater streams from semiconductor and printed circuit board processing A system and method for the detection and removal of copper from wastewater streams from semiconductor or printed circuit board manufacturing is described and claimed. The detection system and method involve the addition of a reagent that reacts with copp... | 10/31/2000 |
| 6136220 | Compositions for treating paint spray booth water Methods and compositions for detackifying and dispersing, and coagulating/flocculating and dispersing solventborne and waterborne paints, respectively, in paint spray booth waters are disclosed. An aqueous composition of water soluble cationic polymer, no... | 10/24/2000 |
| 6136200 | Treatment for paint and lacquer waste water A composition for the detackification and clarification of acid and alkaline paint and lacquer waste waters and paint spray booth wastes, comprising: an inorganic-organic and/or organic adduct alloy polymer composition having the formula: A.multidot.B | 10/24/2000 |
| 6120690 | Clarification of water and wastewater This invention provides a process for clarifying waters and wastewaters by using aluminum salts and/or aluminum polymers and newly formulated high molecular weight quaternized polymers. The aluminum polymers and the high molecular weight quaternized polym... | 09/19/2000 |
| 6059978 | Method of removing colorants from wastewater Cationic polymers are added to wastewater containing colorants to form a cationic polymer/colorant complex. Anionic polymers are then added to the wastewater to produce a flocculent precipitate that is separated from the wastewater.... | 05/09/2000 |
| 5985154 | Methods and compositions for treating paint spray booth water Methods and compositions for detackifying and dispersing, and coagulating/flocculating and dispersing solventborne and waterborne paints, respectively, in paint spray booth waters are disclosed. An aqueous composition of water soluble cationic polymer, no... | 11/16/1999 |
| 5961838 | Amphoteric polymer/polyamine combinations for color removal and clarification of paper mill waste water Processes for removing color from a paper mill waste effluent and for removing color from a textile plant waste effluent utilizing an amphoteric copolymer/polyamine combination are described. A preferred amphoteric copolymer is poly(dimethylaminoethylacry... | 10/05/1999 |
| 5720887 | Methods for sludge dewatering The present invention provides a method for dewatering sludge that utilizes the step-wise and sequential addition to the sludge of a cationic polyamine and a cationic polyacrylamide.... | 02/24/1998 |
| 5707532 | Methods of coagulating and decolorizing waste streams Compositions comprising polyamine and melamine polymers in certain ratios are provided for coagulating suspended solids in wastewaters such as deinking process waters and raw waters.... | 01/13/1998 |
| 5707531 | Process for breaking oil emulsions Oil emulsions are broken in a particularly advantageous manner by adding to them a breaker which comprises poly-DADMAC and polyalkylenepolyamines.... | 01/13/1998 |
| 5659002 | Modified tannin mannich polymers The invention is a process for preparing alkylated tannin Mannich polymers by reacting a tannin Mannich condensation polymer, prepared from a condensed tannin, and amine, and formaldehyde, with an alkylating agent at a pH between 5 and 14. Optionally, the... | 08/19/1997 |
| 5611934 | Process for dye removal A process for dye removal from effluent is disclosed which includes treating the effluent with a reducing agent, adjusting the pH to a selected value in the range of 2-7, treating the effluent with a particular charge neutralization mixture, adjusting the... | 03/18/1997 |
| 5562833 | Dual feed paint detackification program In a paint spray booth wherein water is used to collect oversprayed paint, a process is disclosed for detackifying and coagulating oversprayed paint by the independent and concurrent addition of specific amounts of specific anions and cationic polymers to... | 10/08/1996 |
| 5554298 | Steel mill flume water treatment The invention comprises a method of preventing deposition of oil on steel mill scale particles comprising adding from about 1 part per million to about 500 parts per million of an amine acrylate/acrylic acid copolymer to mill flume water. Once the copolym... | 09/10/1996 |
| 5549832 | Vehicle coolant recycling A process and apparatus for the treatment and recovery of spent vehicle coolant that involves the following steps: a) removing the spent coolant from the engine; b) treating the spent coolant with sodium dimethyldithiocarbamate to cause dissolved metals therei... | 08/27/1996 |
| 5531907 | Treatment of agricultural waste The present invention provides a method for purifying agricultural waste. The method includes the steps of adding effective amounts of at least one polymer flocculent, at least one coagulant, and at least one precipitant. The combined effect of the variou... | 07/02/1996 |
| 5529696 | Method of laundering items and purifying waste water therefrom A method of laundering oily items comprises laundering said items in a wash solution which includes a surfactant system and a source of alkalinity. The source of alkalinity is an alkali metal aluminate preferably sodium aluminate at a concentration effect... | 06/25/1996 |
| 5454955 | Use of hectorite as a clarification aid for deink plant effluent Hectorite is utilized in conjunction with a water soluble cationic coagulant to clarify waste water from the deinking of waste paper.... | 10/03/1995 |
| 5435921 | Vinylamine polymers and coagulants for removing color from paper mill effluents The invention comprises a process for removing true and apparent color from pulp and paper waste waters. It comprises treating these waste waters with a coagulant and vinylamine polymer. The coagulant is selected from the group consisting of epichlorohydr... | 07/25/1995 |
| 5415782 | Method for the alteration of siliceous materials from bayer process liquors Siliceous materials produced by thermally treating spent Bayer process liquors are obtained in modified form when produced in the presence of polymeric quaternary ammonium compounds, polyamine polymers, copolymers of acrylic acid and acrylamide, and polya... | 05/16/1995 |
| 5413719 | Fluorescent tracer in a water treatment process A method for optimizing the dosage of a polyelectrolyte treating agent in a water treatment process using a fluorescent material having the opposite electrical charge as a polyelectrolyte treating agent used to treat water in a water treatment process.... | 05/09/1995 |
| 5395536 | Wastewater organic acid removal process A process for removing carboxylic acids from aqueous solutions using a composition of a polyaluminum chlorohydrate and a cationic polyelectrolyte is described. After or during the initial contact of the aqueous solution with the composition, an organic li... | 03/07/1995 |
| 5360551 | Process for color reduction of dye wastewater A highly colored dye wastewater is treated by a sequence of steps to obtain a color reduction of 90 percent or more. The method requires acidifying the wastewater and adding a cationic flocculant. A reducing agent is then, optionally, added to further red... | 11/01/1994 |
| 5354480 | Improved method of dewatering sludge The dewatering of sludge is improved by utilizing a water-soluble cationic copolymer in the aqueous phase of a water-in-oil emulsion wherein the copolymer has been prepared by (i) preparing an aqueous solution of a non-ionic monomer and a portion of the c... | 10/11/1994 |
| 5346627 | Method for removing metals from a fluid stream A method is provided for removing metals from a fluid stream containing these metals. The method involves treating the fluid stream with a water soluble ethylene dichloride ammonia polymer having a molecular weight of from 500 to 100,000 that contains at ... | 09/13/1994 |
| 5330656 | Polysalt compositions and the use thereof for treating an oil and water system A method for treating a waste system containing an oil phase dispersed on a water phase is disclosed that includes adding a polysalt having an anionic polymer component and a cationic polymer component wherein the weight ratio of the anionic polymer compo... | 07/19/1994 |
| 5326479 | Treatment of pulp and paper wastewater with reducing agent and a polymer for color removal A process for removing color from a pulp and paper wastewater which comprises the following steps: (a) treating the wastewater with a reducing agent which is capable of inactivating color producing functional groups of the wastewater; and (b) treating the... | 07/05/1994 |
| 5304638 | Protein separation medium A separation medium for use in protein separation comprising a water-insoluble matrix carrying a plurality of polyamine groupings, the polyamine groupings having at least three basic nitrogen atoms, the basic nitrogen atoms being separated from each other... | 04/19/1994 |
| 5294352 | Compositions for the detackification of paint spray booth water and waste water A composition for the detackification and clarification of acid and alkaline paint and lacquer waste waters and paint spray booth wastes, comprising: an inorganic-organic and/or organic adduct alloy polymer composition having the formula: A.multidot.B | 03/15/1994 |
| 5292441 | Quaternized polyvinylamine water clarification agents The use of quaternized polyvinylamines for use in water clarification is disclosed.... | 03/08/1994 |
