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| Number | Title | Issue Date |
| 7445712 | Asymmetric forward osmosis membranes There is disclosed a membrane formulation having high flux for forward osmosis applications. There is disclosed a forward osmosis filtration membrane having a salt rejection 99+% or greater, and comprising an asymmetric hydrophobic porous backing and cellulosic fibe... | 11/04/2008 |
| 7422686 | Cellulose hydrate ultrafiltration membranes and method for their production There is disclosed a process for the production of cellulose hydrate ultrafiltration membranes having improved filtration performance and the ultrafiltration membranes produced by the process. ... | 09/09/2008 |
| 7381330 | Cellulose-based microporous membrane There is disclosed a cellulosic microporous filtration membrane with upper and lower porous protective layers with a porous sponge-type intermediate layer between the two protective layers, wherein the sponge-type structure consists of two isotropic regions having d... | 06/03/2008 |
| 7347938 | Use of hydrophobically modified copolymers based on N-vinyl monomers for the production of membranes The present invention relates to the use of copolymers A containing a) from 50 to 99% by weight of at least one N-vinyllactam or N-vinylamine selected from the group consisting of N-vinylpyrrolidone, N-vinylpiperidone, N-vinylcapro... | 03/25/2008 |
| 7318972 | Hydrophilic polymers and their use in electrochemical cells A hydrophilic cross-linked polymer obtainable by copolymerization of hydrophobic and hydrophilic monomers that give a cross-linked hydrophilic polymer on polymerization; a monomer including a strongly ionic group; and water is useful as the membrane in an assembly t... | 01/15/2008 |
| 7309428 | Apparatus for separating components from blood plasma The present invention relates to a process and apparatus for separating blood plasma, having a mixing unit in the form of a first injection having a first connecting tube and a first piston to provide a compartment for a mixture composed of plasma to be separated an... | 12/18/2007 |
| 7296691 | Carbon or activated carbon nanofibers Carbon or activated carbon nanofibers are made from fibrillated nanofibers having a Canadian Standard Freeness of less than about 100, and/or a fiber diameter of less than or equal to about 400 nm. BET surface areas are greater than about 800 m2/g The fib... | 11/20/2007 |
| 7250126 | Acid-neutralizing filter media Acid-neutralizing filter media includes filter media fibers in combination with a strong base of small particle size and high surface area attached to and immobilized on the filter media fibers, and methodology therefor. ... | 07/31/2007 |
| 7250108 | Method for measuring the local hydraulic permeability of a sub-group of hollow fibre of a bundle of hollow fibres A method is provided for measuring the local hydraulic permeability, Lpi, of a sub-group of hollow fibres of a bundle of hollow fibres mounted in a tubular casing. The method comprises a step of placing the casing containing the bundle in a vertical position, the la... | 07/31/2007 |
| 7195923 | Ratiometric determination of glycated protein The present invention provides methods for determining a ratio of an amount of a glycated form of a protein to a total amount of the protein in a sample containing the glycated protein, the glycosylated protein, or the glycoprotein. The method incorporates lateral f... | 03/27/2007 |
| 7182894 | Process for the preparation of free standing membranes The invention discloses a method for synthesizing hollow structured freestanding membrane having pore size of 2 to 200 nm which provides long-term stability that makes it viable for many practical applications such as protein separation and drug delivery. ... | 02/27/2007 |
| 7182981 | Cellulose ester film and production method of the same To provide a cellulose ester film formed by casting, which minimizes degradation of optical properties as well as exhibits sufficient mechanical strength generated by the enhancement of tear strength, and further to provide a production method of the same. A ... | 02/27/2007 |
| 7172075 | Defect free composite membranes, method for producing said membranes and use of the same A defect free semipermeable composite membrane having outstanding integrity and high water permeability is provided. Said composite membrane comprises an inside support layer to provide sufficient mechanical strength, an outside barrier layer to provide selective se... | 02/06/2007 |
| 7165682 | Defect free composite membranes, method for producing said membranes and use of the same A defect free semipermeable composite membrane having excellent integrity and high water permeability is provided. Said composite membrane comprises an inside support layer to provide sufficient mechanical strength; an outside barrier layer to provide selective sepa... | 01/23/2007 |
| 7156506 | Liquid charging method, liquid container, and method for manufacturing the same A liquid charging method for charging a liquid container with a liquid, the liquid container being provided with a piezo-electric device for detecting a consumption condition of the liquid in said liquid container, the piezo-electric device being provided with a cav... | 01/02/2007 |
| 7153426 | Charged filtration membranes and uses therefor The invention relates to charged filtration membranes and their use for separation of a protein from solvent, low molecular weight solutes or a mixture of proteins. Modification of the membranes to generate charge includes modification of membrane pores to alter cha... | 12/26/2006 |
| 7144453 | Composition for preparing porous dielectric thin film containing saccharides porogen A composition for preparing a porous interlayer dielectric thin film which includes a saccharide or saccharide derivative, a thermo-stable organic or inorganic matrix precursor, and a solvent for dissolving the two solid components. Also provided is a dielectric thi... | 12/05/2006 |
| 7138057 | Filter media In one aspect, the invention provides an article consisting essentially of a paper layer including about 10 Wt % to about 40 Wt % of a thermoplastic polymer and an ePTFE membrane laminated to the paper layer. Preferably, the paper layer includes about 10 Wt % to abo... | 11/21/2006 |
| 7094330 | Heterogeneous membrane electrodes The present invention relates to planar electrochemical sensors with membrane coatings used to perform chemical analyses. The object of this invention is to provide unit-use disposable sensors of very simple and economical construction, preferably with only a single... | 08/22/2006 |
| 7094372 | Chitosan membrane containing nano-inorganic particles and the method for forming the same A chitosan membrane containing nanosize particles is disclosed in this invention. The chitosan membrane comprises a chitosan membrane and nano-inorganic particles. The nano-inorganic particles are uniformly embedded in the chitosan membrane. This invention also disc... | 08/22/2006 |
| 7001550 | Charged filtration membranes and uses therefor The invention relates to charged filtration membranes and their use for separation of a protein from solvent, low molecular weight solutes or a mixture of proteins. Modification of the membranes to generate charge includes modification of membrane pores to alter cha... | 02/21/2006 |
| 6899834 | Composite membranes and methods for making such membranes Membranes and methods for making membranes are disclosed. The membranes include a polymeric matrix and a particulate material immobilized within the matrix. The membranes may find particular application in methods and apparatus for removing organic compounds from a ... | 05/31/2005 |
| 6874642 | Filtering element made of absorbent paper material in the form of a tubular cylinder The invention relates to a filter system (10) including a filter element (14) for filtering a fluid within a cylindrical case (12). The filter element is an absorbent tissue paper material in the form of a sheet compactly wound to form inner win... | 04/05/2005 |
| 6797169 | Filter membranes for physiologically active substances Filter membranes for efficiently eliminating pathogens such as viruses from solutions of drugs or physiologically active substances employed as starting materials thereof which are contaminated with pathogens such as viruses. These filter membranes, which can simult... | 09/28/2004 |
| 6797185 | Filtration method for graft polymer polyols An index filtration method is disclosed for filtering graft polyol dispersions. The method allows for the rapid filtration of large volumes of graft polyol dispersion in an economical manner. The process can be highly automated. The resulting filtered graft polyol d... | 09/28/2004 |
| 6667385 | Method of producing aminium lactate salt as a feedstock for dilactic acid or dimer production Polylactic acid is produced from dimers of lactic acid in an energy saving manner by contacting a lactic acid source via an extraction membrane with an amine carrier solvent to extract lactic acid across the membrane. One or two membranes may be used. Aft... | 12/23/2003 |
| 6660165 | Method for regenerating inorganic porous particles, method for purifying water, and continuous water purification device The present invention is to provide a method for regenerating inorganic porous particles, a method for purifying water and a continuous water purification device, which can be easily applied as a recycling system of water in special environments such as s... | 12/09/2003 |
| 6645388 | Leukocyte depletion filter media, filter produced therefrom, method of making same and method of using same A leukocyte depletion filter media includes nonwoven material or microfiber glass which has been coated with a polysaccharide originally containing functionalized side chains capable of crosslinking with each other and the filter media. The leukocyte depl... | 11/11/2003 |
| 6632366 | Cellulose compound hollow fiber membrane The present invention relates to a cellulose compound hollow fiber membrane having high mechanical strength and is hardly degraded by microorganisms, wherein a cellulose compound is comprised as a membrane material, the thickness of the membrane is 50 to ... | 10/14/2003 |
| 6615991 | Filter aid A filter aid, in particular for filtering beverages by means of precoated filters, comprises a mixture of exclusively natural components, e.g. cellulose components. The filter aid is made only of sustainable raw materials and can be degraded almost totall... | 09/09/2003 |
| 6565748 | Cationically charge-modified membranes The present invention relates to cationically charge-modified membranes and methods of preparing such membranes. In one major aspect of the invention, the membranes are hydrophobic membranes that are treated with one or more polymeric wetting agents to re... | 05/20/2003 |
| 6558546 | pH dependent membrane diffusion A pore plugging material, for pH dependent membrane diffusion, in which cyclic olefins having phosphazene-functional moieties provide predictable erosion properties when used to plug pores in separation barriers and other porous membranes. Specific proper... | 05/06/2003 |
| 6540915 | Antimicrobial semi-permeable membranes Cast semi-permeable membranes made from synthetic polymer used in reverse osmosis, ultrafiltration and microfiltration are treated with a non-leaching antimicrobial agent to prevent its bio-fouling and bacterial breakthrough. The semi-permeable membranes ... | 04/01/2003 |
| 6489132 | Methods and apparatus for determining specific analytes in foods and other complex matrices Methods and apparatus for qualitatively or quantitatively determining one or more analytes in matrices such as foods, biological fluids, etc. An embodiment for determination of a single analyte comprises a sample receiving vessel, a first membrane and a r... | 12/03/2002 |
| 6447684 | Filtration and purification system for pH neutral solutions The invention pertains to a method for simultaneously removing metallic ions and particulate material from a pH neutral solution using particle-removing membranes (e.g., ultra high molecular weight polyethylene) having immobilized ligands that possess the... | 09/10/2002 |
| 6387232 | Membrane for a sensor A membrane for use in a sensor having a detection arrangement. The membrane is of a cellulosic material incorporating a hydrophobic agent (e.g. isopropyl myristate) and is permeable by diffusion to an analyte species of interest to be detected directly or... | 05/14/2002 |
| 6372136 | Cellulose acetate semipermeable membrane and process for producing the cellulose acetate semipermeable membrane To provide a cellulose acetate semipermeable membrane having a high filtration rate and high mechanical strength and which is hardly degraded by microorganisms, the present invention provides a cellulose acetate semipermeable membrane containing a cellulo... | 04/16/2002 |
| 6358754 | (Bio)chemical reagent solid phases, process for their production and their applications Novel solid phase reaction supports are disclosed. The solid phase reaction supports include (a) a solid phase carrier having a multiplicity of NH2 functional groups; (b) a coupling compound covalently bonded to an NH2 group of the solid ... | 03/19/2002 |
| 6350621 | (Bio)chemical reagent solid phases, process for their production and their applications Novel solid phase reaction supports are disclosed. The solid phase reaction supports include (a) a solid phase carrier having a multiplicity of NH2 functional groups of the Formula (I): ##STR1## in which R1 and R2 are each... | 02/26/2002 |
| 6348133 | Smooth textured wet-laid absorbent structure A smooth-textured non-woven, superabsorbent particle-impregnated fibrous structure is disclosed. The web exhibits an improved smooth surface texture. The structure contains from 50% to 80% of ion sensitive SAP having a particle size of less than 200 micro... | 02/19/2002 |
