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| Number | Title | Issue Date |
| 8173021 | Method for the preparation of sulfated cellulose membranes and sulfated cellulose membranes The present invention relates to methods for the preparation of functionalized sulfated cellulose membranes. In particular, the present invention relates to the preparation of sulfated cellulose membranes under specific reaction conditions allowing to provide a sulf... | 05/08/2012 |
| 8083947 | Polymer-containing solvent purifying process Polymer-containing solution can be purified and the solvent reused by subjecting the solution to microfiltration using tubular filters having an average pore diameter of less than 1 μm and a filtration pressure of at least 0.35 MPa. This method is particularly usef... | 12/27/2011 |
| 8075782 | Counter-pressure filtration of proteins A method is disclosed for filtering a protein in a liquid mixture in a manner that does not substantially damage or otherwise limit the recovery of the protein in the filtration filtrate. The method generally includes passing a liquid mixture containing a protein (e... | 12/13/2011 |
| 8075781 | Counter-pressure filtration of proteins A method is disclosed for filtering a protein in a liquid mixture in a manner that does not substantially damage or otherwise limit the recovery of the protein in the filtration filtrate. The method generally includes passing a liquid mixture containing a protein (e... | 12/13/2011 |
| 8075780 | Purification and concentration of synthetic biological molecules The present invention is an ultrafiltration (UF) membrane having a nominal molecular weight cut off (NMWCO) of from about 0.5 KD to about 10 KD wherein the membrane surfaces have a charge that is either positive or negative. The present invention is also a method of... | 12/13/2011 |
| 8057681 | Washer bath using centrifuge and ultra filter A part washing apparatus includes a centrifugal filter and an ultra filter provided as a single base unit. A washing chamber is provided to enclose one or more industrial parts for cleaning with a washing solution, which is collected in a washer bath. The washing so... | 11/15/2011 |
| 7959808 | Polysulfone membranes methods and apparatuses The present invention relates to methods and apparatuses for water filtration comprising contacting a water stream with a membrane comprising a polysulfone having structural units of Formula I where... | 06/14/2011 |
| 7959809 | Counter-pressure filtration of proteins A method is disclosed for filtering a protein in a liquid mixture in a manner that does not substantially damage or otherwise limit the recovery of the protein in the filtration filtrate. The method generally includes passing a liquid mixture containing a protein (e... | 06/14/2011 |
| 7837880 | Acid tolerant polymeric membrane and process for the recovery of acid using polymeric membranes A crosslinked polymeric membrane, such as a crosslinked polyvinyl sulfate membrane or a crosslinked copolymer polyvinyl sulfate and polyvinyl alcohol membrane, is provided. The membrane is suitable for use in an acid environment, and is suitable for recovering acid ... | 11/23/2010 |
| 7803276 | Regeneration of sulfuric acid This invention relates to a process for recycling acid used to remove nitrogen contaminants from hydrocarbons using polymeric membranes to separate spent acid from the acid extraction of hydrocarbons into acid for recycle and acid for regeneration. ... | 09/28/2010 |
| 7776219 | Methods, devices, and systems for hemodilution Devices, methods, and system that prevent clotting of blood during blood-processing procedures such as hemofiltration, hemodialysis, and hemodiafiltration are described. A filter with a cap has a housing that is shaped to receive a blood filter. The housing has an i... | 08/17/2010 |
| 7749385 | Materials and methods for processing non-aqueous mixtures The invention provides porous matrices that comprise one or more surfactants that can be used in non-aqueous environments. ... | 07/06/2010 |
| 7731854 | Situ system and method for treating an oil and gas well drilling fluid An in situ system used for treating an oil and gas well drilling fluid and treating water after a well is completed. The system includes a fluid treatment unit used in a reserve pit and a water treatment unit disposed next to the pit. The fluid treatment unit includ... | 06/08/2010 |
| 7678277 | Materials for processing non-aqueous mixtures and methods for their preparation The invention provides porous matrices that comprise one or more anionic surfactants that can be used in non-aqueous environments. ... | 03/16/2010 |
| 7655146 | Method for filtering blood or blood components using leukocyte-removing filter and filter device The method comprises providing a leukocyte-removing filter having a thickness of 9.0 mm to 9.4 mm, an air permeability pressure drop of 300 Pa to 700 Pa, and effective filtration area of 50 cm2 to 70 cm2 which comprises a flat and flexible cont... | 02/02/2010 |
| 7638059 | Method for stable oxygen isotope separation and its apparatus using membrane distillation The present invention relates to an oxygen isotope separation system and a method therefor. More specifically, the invention relates to a newly invented pressure-driven AGMD (Air Gap Membrane Distillation) system applied to a multi-stage membrane distillation cells ... | 12/29/2009 |
| 7608189 | Device for removing bacterial lipopolysaccharides and/or lipoteichoic acids from protein-containing fluids and its use for the treatment of sepsis A device for removing bacterial lipopolysaccharides and lipoteichoic acids from blood or plasma in an extracorporeal perfusion system contains, in a housing that can be incorporated into the perfusion system, a hollow fiber material that is suitable for the selectiv... | 10/27/2009 |
| 7601263 | Composite membrane and process The invention relates to a composite with a separation-active membrane layer and a supporting membrane, a process for the production of the same and a process for using the same. The composite membrane according to the invention is distinguished by the fact that the... | 10/13/2009 |
| 7591951 | Fuel filter system and method of operating same A fuel filter for cleaning fuel, particularly for engines of motor vehicles, having a filter housing (10) with an inlet (14), an outlet (15), and a filter element (16) for cleaning the fuel situated between the inlet (14) and the o... | 09/22/2009 |
| 7575687 | Membranes and methods useful for caustic applications The invention provides methods for purifying caustic feed streams using membranes that comprise polysulfonamide matrices. ... | 08/18/2009 |
| 7501063 | Apparatus for collecting nanoparticles A collecting apparatus includes a syringe device, a filtering device and a power system. The syringe device contains a sample, and the sample has a plurality of nanoparticles mixed with fluids. The filtering device is connected to the syringe device for collecting t... | 03/10/2009 |
| 7497950 | Highly selective membrane systems and methods for protein ultrafiltration A new ultrafiltration technique based on a multimembrane stack has been developed to fractionate solutes closer in size than conventionally possible. The technique is illustrated here by obtaining a pure protein product from a binary protein mixture. By employing me... | 03/03/2009 |
| 7465398 | Method for filtering and recovering solids from potato process water A method for filtering and recovering solids from potato process water that results in a product containing a portion of the solids from the potato process water is presented. In general, the method involves providing a plurality of vessels wherein a step in a manuf... | 12/16/2008 |
| 7452470 | Method of preparing a finely divided emulsion from a crude emulsion A method of preparing a finely divided emulsion from a crude emulsion is proposed where the crude emulsion is forced through a porous membrane, wherein the porous membrane is constructed from two or more superimposed layers which differ in pore diameter. ... | 11/18/2008 |
| 7442309 | Methods for reducing boron concentration in high salinity liquid Methods of treating a high salinity liquid, such as seawater, containing boron are provided, including adjusting the pH of the liquid to about 8 to about 9.5, optionally adding a scale inhibitor to the liquid, passing the liquid through a reverse osmosis device, and... | 10/28/2008 |
| 7442359 | Recovery of sulphuric acid The invention is directed to a process for the recovery of sulphuric acid from a mixture comprising sulphuric acid and hydrocarbons, in particular carbohydrates. In accordance with the present invention the mixture comprising sulphuric acid and carbohydrates, is con... | 10/28/2008 |
| 7442308 | Process for removing viruses in fibrinogen solutions and fibrinogen obtained by said process A process for removing viruses in fibrinogen solutions and fibrinogen obtained thereof wherein the process starts with an adjusted purified fibrinogen solution, the adjusted purified solution is frozen and then thawed at a temperature between 5 and 20° C., the undi... | 10/28/2008 |
| 7418977 | Liquid-handling apparatus having a liquid switch and method for handling liquids A liquid-handling apparatus has a liquid switch, which has a first channel branching into a second and a third channel, wherein the channels are formed in a rotation body. The channels are adapted to route a liquid volume from the first channel into one of the secon... | 09/02/2008 |
| 7410585 | Apparatus and method for storing and releasing sulfur containing aromatic compounds from a fuel stream of an internal combustion engine Disclosed is a fuel filter for removing sulfur containing compounds from an internal combustion fuel stream. In one embodiment, the fuel filter comprises at least one column comprising an adsorbent. In one exemplary embodiment the adsorbent is capable of removing su... | 08/12/2008 |
| 7410587 | Liquid handling for filtration and preparative chromatography A method and system are provided for high-precision separation of pharmaceutical or biotechnology liquids. The separation can be in accordance with direct flow filtration, tangential flow filtration or preparative chromatography. Movement of the pharmaceutical or bi... | 08/12/2008 |
| 7387735 | Method of isolating semiconducting carbon nanotubes A method of isolating semiconducting carbon nanotubes includes mixing carbon nanotubes with a mixed acid solution of nitric acid and sulfuric acid to obtain a dispersion of carbon nanotubes, stirring the carbon nanotube dispersion, and filtering the carbon nanotube ... | 06/17/2008 |
| 7374686 | Electrocoat manufacturing process The present invention provides a method of preparing an electrocoat coating composition, comprising forming an aqueous emulsion comprising a film-forming component and water and removing at least a portion of the water from the aqueous emulsion by ultrafiltration. | 05/20/2008 |
| 7371322 | Filtration system and dynamic fluid separation method A filtration system is provided with filter media operable to remove solids, particulate and colloidal matter from a process fluid. The filtration system may include one or more porous membranes which are anchored or secured on their periphery with a large open work... | 05/13/2008 |
| 7367206 | Dry-cleaning machine The present invention provides a dry-cleaning machine capable of performing a water-repellent finishing process when necessary, while ensuring a high level of safety. When the water-repellent finishing process has been performed after the drying process (Step S2 | 05/06/2008 |
| 7368057 | Method and system for removing residual water from excess washcoat by ultrafiltration A washcoat coating composition is disclosed that includes at least one water insoluble organic solvent and at least one polymer, such as an epoxy acrylic copolymer. A method of removing residual water from a mixture of residual water and washcoat using ultrafiltrati... | 05/06/2008 |
| 7368058 | Method of generating fresh water and fresh-water generator The present invention is a water processing method comprising the steps of separating boron-containing water in a reverse osmosis membrane module to provide a permeated water and subjecting a part of the obtained permeated water to boron removal using an adsorbent, ... | 05/06/2008 |
| 7364875 | Method for producing medical and commercial grade poly-gamma-glutamic acid of high molecular weight Methods for producing high molecular weight poly-gamma-glutamic acid (PGA). The PGA is produced by fermentation, and purified by use of tangential flow filtration, followed by diafiltration, as necessary, to yield a product of the desired purity. Product obtained ma... | 04/29/2008 |
| 7361277 | Biological fluid filter and system A filter device (100) comprising a filter (10) for producing a leukocyte-depleted plasma-rich fluid is disclosed. ... | 04/22/2008 |
| 7358414 | Para-xylene process using perm-selective separations Processes and apparatus are disclosed for recovery of purified products from a fluid mixture by means of integrated perm-selective separations with purified product recovery operations. More particularly, integrated processes of the invention comprise separations by... | 04/15/2008 |
| 7351873 | Continuous process to separate colour bodies and/or asphalthenic contaminants from a hydrocarbon mixture A continuous process to separate color bodies and/or asphalthenic contaminants from a hydrocarbon mixture by passing part of the hydrocarbon mixture through a membrane over which membrane a pressure difference is maintained thereby obtaining a hydrocarbon permeate h... | 04/01/2008 |
