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| Number | Title | Issue Date |
| 7335310 | Method of treating wastewater containing hardly decomposable harmful substances A method of treating hardly decomposable harmful substance comprising (A) a step for adding coagulant into wastewater containing a hardly decomposable harmful substance, (B) a step for performing solid-liquid separation which separates a solid containing the hardly ... | 02/26/2008 |
| 7291295 | Method for precipitating finely divided solid particles A method for precipitation of finely divided solid particles comprising a) Dissolving a compound C in a fluid A to provide a solution A; b) Thermostatization of said solution A to a temperature ranging between −50°0 C. and 200° C.;... | 11/06/2007 |
| 7255795 | Process for selectively removing molybdenum from liquid mixtures containing it together with vanadium Process for selectively removing molybdenum from liquid mixtures containing it, in a quantity greater than (200) mg/l, together with vanadium characterized in that it comprises the following steps: bringing the liquid mixture to a pH of less than (3); adding a solut... | 08/14/2007 |
| 7244364 | FCC-CFD cat' fine desalting: a method and system for separating hydrocarbons and extracting catalyst fines from a slurry oil/catalyst fines/diluent mixture The present invention comprises a method for separating hydrocarbons from catalyst fines in a slurry oil/catalyst fines/diluent mixture (SCDM) comprising the steps of removing SCDM from a slurry oil storage tank and combining the SCDM with crude oil entering a desal... | 07/17/2007 |
| 7238534 | Capillary active test element having an intermediate layer situated between the support and the covering The invention concerns a device for withdrawing samples of liquid samples for analytical elements. The capillary-device channel is essentially formed by a carrier, a cover and optionally an intermediate layer between the cover and carrier. A notch is located in one ... | 07/03/2007 |
| 7229525 | Methods to enhance pulp bleaching and delignification A method to enhance brightness in Chemical and Mechanical pulps comprising adding an organic sulfide chelant is described and claimed. A method to enhance delignification in a Chemical pulp comprising adding an organic sulfide chelant is also described and cl... | 06/12/2007 |
| 7193084 | Polymorphic form of itraconazole The present invention provides a polymorphic form of itraconazole. ... | 03/20/2007 |
| 7172703 | Method of reclaiming a well completion brine solutions using an organic chelant A method of reclaiming a well completion brine solution by using an organic chelant that is capable of discriminating between (i) iron and/or non-zinc heavy metals; and (ii) calcium and zinc. The chelant is of the formula: ... | 02/06/2007 |
| 7147783 | Method for reducing hydrogen sulfide emissions from wastewater A cost-effective method for reducing the dissolved sulfide content in a wastewater stream and thereby hydrogen sulfide emissions therefrom involving the steps of adding a transition metal salt to the wastewater stream at the upper reaches of a wastewater collection ... | 12/12/2006 |
| 7144512 | Method of reclaiming brine solutions using an organic chelant A method of reclaiming a well completion brine solution by using an organic chelant that is capable of discriminating between (i) iron and non-zinc heavy metals; and (ii) calcium and zinc. The chelant contains a functional group selected from the group —CO2 | 12/05/2006 |
| 7112340 | Compositions of and method for preparing stable particles in a frozen aqueous matrix The present invention discloses a composition of a stable suspension of a poorly water soluble pharmaceutical agent or cosmetic in the form of particles of the pharmaceutical agent or cosmetic suspended in a frozen aqueous matrix and method for its preparation. The ... | 09/26/2006 |
| 7087570 | Detergent tablets Detergent tablets comprising surfactant granules obtained by granulation and compaction of a nonionic surfactant, selected from the group consisting of hydroxy mixed ethers, in the presence of a disintegrant, are described. ... | 08/08/2006 |
| 7083731 | Precious metal scavenging from a liquid medium with a functionalised polymer fiber A method for the recovery of a metal from a liquid medium containing the metal I solution or in finely divided insoluble from comprises contacting the medium with a functionalized polymer fiber capable of binding the metal and recovering the metal from the fiber. Th... | 08/01/2006 |
| 7077884 | Hydrogen sulfide scrubber using polymeric amine and associated methods A hydrogen sulfide scrubber includes first and second scrubber tanks with scrubber media contained therein. Scrubbing solution circulators each include a dispenser for dispensing scrubbing solution into contact with the scrubber media, a sump for collecting the scru... | 07/18/2006 |
| 7063793 | Apparatus and method for removing mercury and mercuric compounds from dental effluents The present invention is directed to processes for removing a contaminant from dental effluents and includes transporting a three-phase effluent through a suction line into a particle collection vessel, introducing a suction line cleaning solution which includes a r... | 06/20/2006 |
| 7037528 | Microprecipitation method for preparing submicron suspensions The present invention provides a method for preparing submicron sized particles of an organic compound, the solubility of which is greater in a water-miscible first solvent than in a second solvent which is aqueous, the process including the steps of: (i) dissolving... | 05/02/2006 |
| 7008799 | Analytical test element with a capillary channel The invention concerns an analytical test element for the determination of an analyte in a liquid containing an inert carrier, a detection element and a channel capable of capillary liquid transport which has a sample application opening at one end and a vent openin... | 03/07/2006 |
| 6989103 | Method for separating fluids Methods of treatment of fluids produced by an oil or gas well following a stimulation operation, allowing separation from the fluids and re-injection of oil and gas hydrocarbons in a production pipeline under pressure, and allowing achievement of suitable quality fo... | 01/24/2006 |
| 6977048 | Method of recycling water contaminated oil based drilling fluid A method for recycling an invert emulsion based drilling fluid, in which the invert emulsion based drilling fluid includes an oil component and an aqueous component. The method includes: mixing the invert emulsion drilling fluid with a emulsion clearing agent, where... | 12/20/2005 |
| 6977085 | Method for preparing submicron suspensions with polymorph control The present invention provides a method for preparing a suspension of a pharmaceutically-active compound, the solubility of which is greater in a water-miscible first organic solvent than in a second solvent which is aqueous. The process includes the steps of: (i) d... | 12/20/2005 |
| 6951656 | Microprecipitation method for preparing submicron suspensions The present invention provides a method for preparing submicron sized particles of an organic compound, the solubility of which is greater in a water-miscible first solvent than in a second solvent which is aqueous, the process including the steps of: (i) dissolving... | 10/04/2005 |
| 6946076 | Removal of phosphate from water Methods and compositions for removing phosphate from swimming pool waters are disclosed. The compositions include both soluble and substantially insoluble lanthanide carboxylates, preferred examples being lanthanum glycolate and lactate. The methods include the addi... | 09/20/2005 |
| 6921487 | Removal of zinc salts from nonaqueous synthesis solutions comprising zinc alkoxides or zinc amides A process for removing zinc from organic solutions comprising zinc alkoxides or zinc amides, includes admixing the solution with an alkylating, arylating, acylating or silylating agent in the presence of a precipitating reagent having at least two nitrogen donors an... | 07/26/2005 |
| 6916428 | Photo-chemical remediation of Cu-CMP waste A photo-chemical remediation of Cu-CMP waste streams basically includes the following acts: adding photo-catalyst particles into waste streams containing copper ions and organic pollutants and exposing the waste streams to UV light or sunlight to make copper ions be... | 07/12/2005 |
| 6896809 | Methods for purifying chitosan One method for purifying a chitosan starting material includes contacting it with at least one treatment agent selected from a protein-complexing agent, a metal-chelating agent, and a metal-complexing agent under pH conditions effective for forming a water insoluble... | 05/24/2005 |
| 6884613 | Selective precipitation of viruses The invention provides new methods for purifying and concentrating viruses. The inventors have discovered that high molecular weight proteoglycans present in retroviral stocks are co-concentrated with the retroviruses, and can inhibit retroviral transduction. The ne... | 04/26/2005 |
| 6855260 | Methods of enhancing fine particle dewatering A new method of improving the process of dewatering fine particulate materials is disclosed. In this method, an aqueous slurry of fine particles is treated with appropriate hydrophobizing reagents so that the particulate material becomes moderately hydrophobic with ... | 02/15/2005 |
| 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 |
| 6821439 | Water purification using organic salts Water purification using organic salts. Feed water is mixed with at least one organic salt at a temperature sufficiently low to form organic salt hydrate crystals and brine. The crystals are separated from the brine, rinsed, and melted to form an aqueous solution of... | 11/23/2004 |
| 6797178 | Method for removing mercury and mercuric compounds from dental effluents The present invention is directed to processes for removing a contaminant from dental effluents and includes transporting a three-phase effluent through a suction line into a particle collection vessel, introducing a suction line cleaning solution which includes a r... | 09/28/2004 |
| 6797180 | Dewatering sand with surfactants Methods of enhancing the dewatering of sand are disclosed. The methods include adding an anionic or nonionic surfactant to the wet sand prior to dewatering. ... | 09/28/2004 |
| 6746611 | Method and composition for scavenging sulphide in drilling fluids and composition An environmentally friendly method and composition is provided for removing hydrogen sulphide from fluids at high pH. The method and composition are particularly suited for removing hydrogen sulphide from drilling fluids used in drilling boreholes in hydrocarbon bea... | 06/08/2004 |
| 6736977 | Apparently dry waste management system A method of disposing of photographic silver halide processing solutions including developer, bleach and at least one silver bearing solution comprising a) combining the developer and bleach solutions to oxidize the developing agent in the developer and form a devel... | 05/18/2004 |
| 6723249 | Detoxification of onium compounds A method for reducing the toxicity of onium compounds, such as ammonium compounds and phosphonium compounds, by the use of certain additives is described. Suitable additives include, but are not necessarily limited to, carboxylic acids (e.g. naphthenic acids), sulfo... | 04/20/2004 |
| 6723245 | Method of using water soluble cationic polymers in membrane biological reactors A method of conditioning an activated sludge in a membrane biological reactor comprising (i) adding to the activated sludge an effective amount of at least one water soluble cationic polymer to form a mixture of water and coagulated and flocculated suspended ... | 04/20/2004 |
| 6673245 | Use of surface-active agents in the impurity removal process from solutions containing acetic derivatives using nano-filtration with membranes, in a process to obtain cellulose acetate This invention refers to the use of surface-active agents as a treatment of effluents containing acetic derivatives by tangential filtration characterized from aqueous solutions containing between 20 and 35% in weight of acetic derivatives having been opt... | 01/06/2004 |
| 6663778 | Process for the treatment of aqueous streams containing inorganics Disclosed is a method of separating sulfate-ion pair complexes from aqueous streams. The method involves the steps of: (a) concentrating and distilling an aqueous stream containing inorganic material by membrane distillation; (b) adding a non-hazardous mi... | 12/16/2003 |
| 6652758 | Simultaneous ammonia and fluoride treatment for wastewater An improved method of treating wastewater to remove ammonia and fluoride is provided. The method comprises the steps of chemical destruction of ammonia with an oxidizing agent, followed by treatment with calcium salts to precipitate insoluble calcium fluo... | 11/25/2003 |
| 6533938 | Polymer enhanced diafiltration: filtration using PGA A method is describe for removing metal ions of interest from aqueous solutions containing low concentrations of the metal ions of interest. The method involves the use of a microbially produced polymer, γ-glutamic acid. The polymer is used in conjunctio... | 03/18/2003 |
| 6514418 | Method of dewatering slurries using leaf filters (filter presses) The invention relates to a process for dewatering sewage sludges using plate filters, wherein the flocculated sewage sludge treated by means of organic polymer flocculation aids and optionally other auxiliary agents is separated from the major amount of w... | 02/04/2003 |
