William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Application No. | Application Title | Issue Date |
| 20120125862 | USE OF SILICON-CONTAINING POLYMERS TO IMPROVE RED MUD FLOCCULATION IN THE BAYER PROCESS The suspended solids content of a Bayer process stream is reduced by contacting the stream with silicon-containing polymers.... | 05/24/2012 |
| 20120103915 | METHOD AND DEVICE FOR PURIFICATION OF ARSENIC CONTAMINATED WATER A method of purifying arsenic contaminated water is disclosed. The method comprises of adding to the arsenic contaminated water predetermined quantities of iron and alkali; and passing the water so obtained through a filter medium including rice husk ash. A device for p... | 05/03/2012 |
| 20120080385 | FACILITY FOR TREATING AN AQUEOUS FLUID BY CONTACT WITH A FLUIDISED BED OF COAGULATED ACTIVATED CARBON IN POWDER FORM The present invention relates to a treatment installation of aqueous fluid, in particular to ensure elimination of organic micropollutants and natural organic matter, comprising a single reactor (10) for treatment of aqueous fluid by contact with a fluidised bed ... | 04/05/2012 |
| 20120067825 | EFFICIENT METHODS FOR OPERATION WITH HIGH PRESSURE LIQUIDS Methods for more efficiently carrying out various operations through the use of pressure transfer between streams. The methods are applicable for use in conjunction with a wide range of processes including precipitation reactors (19), subterranean space (49 | 03/22/2012 |
| 20120037569 | SYSTEM AND METHOD FOR MINERAL HARDNESS MANAGEMENT A method of removing mineral hardness of water comprises selecting a mineral hardness solubility constant modifier capable of at least partially precipitating insoluble mineral hardness material from water containing mineral hardness. A pressurized flow of the water con... | 02/16/2012 |
| 20120031850 | Extraction of Sulfate from Water Sulfate anions and divalent metal ions, such as magnesium, strontium and barium, in water are removed by treating the water with polyaluminum chloride, usually together with lime, to form ettringite and similar crystalline species which are readily removable by settling... | 02/09/2012 |
| 20120029120 | SYSTEMS AND METHODS FOR REMOVING FINELY DISPERSED PARTICULATE MATTER FROM A FLUID STREAM Disclosed are methods of removing particulate matter from potash tailings fluid. The invention includes providing an activating material capable of being affixed to the particulate matter, affixing the activating material to the particulate matter to form an activated p... | 02/02/2012 |
| 20110315637 | METHODS TO RECOVER AND RECLAIM HYDROCARBONS OR HYDROPHOBIC SUBSTANCES IN AN AQUEOUS ENVIRONMENT The present invention provides useful biodegradable and environmentally friendly cost effective methods for oil recovery and reclamation from oil spills and chemical spills. More particularly, methods to recover and reclaim hydrocarbons or hydrophobic substances in an a... | 12/29/2011 |
| 20110309017 | METHODS AND DEVICES FOR ENHANCING CONTAMINANT REMOVAL BY RARE EARTHS Embodiments are provided for removing a variety of contaminants using both rare earth and non-rare earth-containing treatment elements.... | 12/22/2011 |
| 20110240561 | Configurations and Methods of Treatment of Silicate-Containing Waste Streams Contemplated wastewater treatment plants and processes comprise a unit in which a silicate-containing waste stream is combined with an alkaline process stream to so form a pH-controlled intermediate that is then fed to a reactor in which carbonization effects precipitat... | 10/06/2011 |
| 20110226702 | Solubilized Heavy Metal Binding Reagent A solubilized reagent for treating and binding heavy metals and method of producing and process of using the same. The solubilized reagent includes an isolated supernatant of a slurry or a saturated or supersaturated solution of alkali metal/alkaline earth metal carbona... | 09/22/2011 |
| 20110210076 | PROCESS TO MAINTAIN LARGE CLEAN RECREATIONAL WATER BODIES The invention discloses a process to implement and maintain large water bodies with color, transparency, and cleanness characteristics similar to swimming pools or tropical seas, at low cost. The present invention also discloses a structure to contain large water bodies... | 09/01/2011 |
| 20110174453 | POLYMER DISPERSION The invention relates to an aqueous polymer dispersion comprising an anionic water-soluble dispersion polymer comprising in polymerized form a monomer mixture comprising (i) one or more anionic monomers, (ii) a first non-ionic vinyl monomer which is acrylamide, and (iii... | 07/21/2011 |
| 20110147316 | DEOILING OF SAGD PRODUCE WATER Methods of deoiling oily water such as SAGD and frac produce water. The oily water is treated with a natural coagulant selected from tannins and chitosan. A cationic and/or anionic flocculant may also be added to the treated oily water. The thus treated oily water may b... | 06/23/2011 |
| 20110139724 | Composition and Method for Reducing Chlorite in Water A composition and method for reducing a concentration of chlorite in water. The composition comprises a mixture of ferrous iron and a polyaluminum chloride. The mixture is contacted with a water containing chlorite.... | 06/16/2011 |
| 20110114568 | System and Method for Treating Wastewater A wastewater treatment system includes a chemical treatment process tank for receiving and chemically treating wastewater. The wastewater treatment system also includes a blending system for receiving and activating a flocculating agent such as a polymer. The wastewater... | 05/19/2011 |
| 20110024359 | METHOD FOR REMOVING CHLORIDE FROM AQUEOUS SOLUTION A method for removing chloride from an aqueous solution having an initial chloride ion (Cl−) weight concentration, comprising: adding a magnesium compound to the aqueous solution, magnesium ion weight concentration being less than about 20% of the initial c... | 02/03/2011 |
| 20110021670 | INTEGRATED PROCESS FOR MANUFACTURING A BINDER A process for manufacturing a binder from a waste water effluent is disclosed. A method for recovering the protein used in the manufacture of the binder comprises adding an agglomerating agent to the waste effluent stream, precipitating the protein and separating the wa... | 01/27/2011 |
| 20100314263 | STAND-ALONE INTEGRATED WATER TREATMENT SYSTEM FOR DISTRIBUTED WATER SUPPLY TO SMALL COMMUNITIES Provided is a standalone integrated water treatment system for a distributed water supply. A filter input receives water to be treated. A coagulation system is in operative connection with the filter input, wherein the water which has been filtered is subjected to a coa... | 12/16/2010 |
| 20100288706 | METHOD FOR THE PREPARATION OF AT LEAST ONE COMPOUND FROM BLOOD, AND EXTRACTION DEVICE FOR USE IN THE EXECUTION OF SAID METHOD Method for the preparation of at least one compound with biological properties from blood, where said method is performed in sealed tubes at a pressure below atmospheric pressure, thereby reducing or preventing the bacterial contamination of the compound through handlin... | 11/18/2010 |
| 20100170855 | MODIFICATION OF PRECIPITATE MORPHOLOGY AND SETTLING CHARACTERISTICS IN ACID CONDITIONS The current invention relates to the modification of precipitate formed from an acidic slurry or solution resulting in decreased settling times and final solids bed volumes. The current invention uses an aqueous synthetic mixture comprising a phosphate, phosphonate, ani... | 07/08/2010 |
| 20100102007 | Process for Treatment of Sewage Waste Water This is a reliable cost-effective adsorption based method for removing the dissolved and suspended organic matter by adding a natural “flocculent sorption particles” which is (Sodium, Calcium, Alumino silicate hydrated), and ferric Chloride, using a mixing tank. Hea... | 04/29/2010 |
| 20100038081 | METHOD FOR REMOVING SILICA FROM EVAPORATOR CONCENTRATE A method for removing silica from evaporator concentrate to facilitate disposal of the concentrate. An alkaline earth compound is mixed with the concentrate in a crystallizer. Silica in the concentrate reacts with the alkaline earth compound and precipitates from the co... | 02/18/2010 |
| 20100025332 | Titanium composition for water treatment and method A personally portable water purification compound prepared in unit dosage form such as tablets, packages and the like and having titanium dioxide (TiO2) in the form of fine particles, and adsorbed chlorine held at the surface of the titanium dioxide particles... | 02/04/2010 |
| 20090301973 | WATER REACTION TANK A water reaction tank for reacting water containing suspended solids with a flocculant includes a housing having an input, an output, and a water flow path between the input and the output. The flow path has a mixing section and a reaction section. Sealable flocculant p... | 12/10/2009 |
| 20090242490 | Method and Apparatus for Fluid Separation A method is disclosed for separating a multiphase fluid stream comprising a heavier fluid component and a lighter fluid component, the method comprising causing the fluid to flow along a first helical flowpath, the first helical flowpath having a first pitch, the first ... | 10/01/2009 |
| 20090206040 | SYSTEMS AND METHODS FOR REMOVING FINELY DISPERSED PARTICULATE MATTER FROM A FLUID STREAM Disclosed herein are systems for removing particulate matter from a fluid, comprising a particle functionalized by attachment of at least one activating group or amine functional group, wherein the modified particle complexes with the particulate matter within the fluid... | 08/20/2009 |
| 20090114601 | Device and Method for Dynamic Processing in Water Purification A transformational approach to water treatment is provided that incorporates membrane-free filtration with dynamic processing of the fluid to significantly reduce treatment times, chemical cost, land use, and operational overhead. This approach provides hybrid capabilit... | 05/07/2009 |
| 20090095685 | VIBRATORY MIXER A treatment system including a vibratory mixer is disclosed. The vibratory mixer comprises a vibrating element to facilitate the dissolution of a treating agent that facilitates separation of solids from liquids in water and wastewater streams. Vibratory mixing energy t... | 04/16/2009 |
| 20090095687 | METHOD FOR SEPARATING OFF COLORING COMPONENTS FROM AQUEOUS PLANT EXTRACTS The invention relates to a method for separating off coloring components from aqueous plant extracts in which magnesium ions (Mg2+) are added to the plant extract, at least one alkaline component is added to the plant extract, a precipitate is formed, and the... | 04/16/2009 |
| 20090065736 | CHEMICAL MODIFICATION OF MALEATED FATTY ACIDS Chemically modified maleated fatty acid compositions and the salts thereof, especially chemically modified tall oil fatty acid containing compositions are useful in formulating corrosion inhibitors, as emulsifiers, as collectors in mining applications, and as cross-link... | 03/12/2009 |
| 20090065442 | WASTEWATER TREATMENT AND RECYCLING SYSTEM A system and process for removing contaminants from wastewater where the wastewater is treated into a cleaned water that can be reused or discharged into the environment. The wastewater is transported through purification sections, depending on the system including seve... | 03/12/2009 |
| 20090050571 | CATIONIC POLYMER DISPERSIONS, METHOD FOR PRODUCING SAID DISPERSIONS AND USE THEREOF The invention relates to water-in-water polymer dispersions containing a polymer A with a cationic monomer fraction of up to 60 wt. % and at least one polymer dispersant B, based on cationised dialkylaminoalkyl (meth)acrylamides with an average molecular weight of betwe... | 02/26/2009 |
| 20090026145 | Process for dewatering a mineral slurry concentrate and increasing the production of a filter cake The present invention provides a process for dewatering a mineral slurry concentrate and increasing the production of the resulting filter cake consisting essentially of mixing an aqueous mineral slurry concentrate with an effective amount of a nonionic surfactant and a... | 01/29/2009 |
| 20080314840 | Method For Separating Suspended Solid Materials From Aqueous Systems With Colloidal Flocculants The invention relates to a method for separating suspended solid materials from aqueous systems, in which the latter is mixed with a flocculant made of polymer colloidal particles with cationic surface charge and subsequently the flocculated material is separated from t... | 12/25/2008 |
| 20080296228 | Wastewater Treatment Method Comprising Decantation and Fine Screening Stages and Device for Carrying Out Said Method A method for removing helminth egg and other suspended solids from a wastewater stream includes directing the wastewater to a ballasted flocculation system and adding a coagulation agent, flocculation agent and a ballast into the wastewater. Sludge is settled from the w... | 12/04/2008 |
| 20080274939 | WATER TREATMENT SYSTEM AND DOWNSTREAM CLEANING METHODS The present invention provides methods for treating an aqueous system comprising contacting the aqueous system with a composition comprising a conversion agent. The methods of the present invention reduce the solubilized water hardness and/or reduce or inhibit scale for... | 11/06/2008 |
| 20080257826 | Fluidized Bed Wastewater Treatment A fluidized bed reactor (14) for removing phosphorus and nitrogen from wastewater has a column comprising a number of sections. (15A, 15B, 15C, 15D) The diameter of the column changes stepwise between the sections. A flow velocity in e... | 10/23/2008 |
| 20080237139 | METHOD AND SYSTEM OF WATER MANAGEMENT IN THE AGGREGATE INDUSTRY A method of managing water is provided, in which the water is discharged from an aggregate plant, and therefore contains a large number of fines. The water is first passed through a mesh screen to remove large particles and then collected in a sump. From the sump the wa... | 10/02/2008 |
| 20080190859 | Method for Recovering Suspended Solids from Residual Effluents A process for the treatment of contaminated fluid and wastewater containing residuals from food processing and waste and residuals from animal feeding operations and effluent from the digestion of these residuals is disclosed. The process is carried out in an enclosed t... | 08/14/2008 |