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| Number | Title | Issue Date |
| 7645383 | Microstructured filter A microstructured filter is presented having an inlet for unfiltered fluid; an outlet for filtered fluid; a plurality of projections, which form at least one row in a mutually juxtaposed relationship across the filter, that project out of a base plate and are an int... | 01/12/2010 |
| 7316919 | Composite materials comprising supported porous gels This invention relates to a composite material that comprises a support member that has a plurality of pores extending through the support member and, located in the pores of the support member, and filling the pores of the support member, a macroporous cross-linked... | 01/08/2008 |
| 7311831 | Filtration membrane and method of making same A filtration membrane and method of making the same wherein the filtration membrane comprises obstructions and/or spacers. ... | 12/25/2007 |
| 7267769 | Water purification system utilizing a carbon block pre-filter A water purification system includes an activated carbon filter and a reverse-osmosis (RO) filter. The activated carbon filter is typically formed with a central aperture that receives an upper portion of a central tube. The RO filter, which is positioned downstream... | 09/11/2007 |
| 7189322 | Charged membrane The present invention provides a hydrophilic charged microporous membrane comprising a porous hydrophobic substrate and a coating comprising a charge-providing agent. The present invention further provides a hydrophilic charged membrane comprising a porous hydrophob... | 03/13/2007 |
| 7175606 | Disposable medical fluid unit having rigid frame A method, system and apparatus for performing peritoneal dialysis are provided. To this end, in part, a frame of a disposable unit for a medical fluid system is provided. The frame includes a body having a pair of opposing sides and defining a space between the side... | 02/13/2007 |
| 7108791 | High-resolution virus removal methodology and filtration capsule useful therefor The present invention provides a high-resolution membrane-based method for removing a virus from a manufactured protein-containing solution, the method being particularly characterized by its capacity to be performed quickly (i.e., as measured by flux) and efficient... | 09/19/2006 |
| 7094347 | Positively charged membrane The present invention provides a positively charged microporous membrane having a protein binding capacity of about 25 mg/ml or greater comprising a hydrophilic porous substrate and a crosslinked coating that provides a fixed positive charge to the membrane. The pre... | 08/22/2006 |
| 7081201 | Encapsulated filter cartridge An encapsulated filter cartridge is disclosed, which includes a filter assembly including a carbon block filter element and a microporous filter element. The filter cartridge has a permanently sealed sump defining an interior chamber configured to accommodate the fi... | 07/25/2006 |
| 6977042 | Microstructured filter A microstructured filter having an inlet for unfiltered fluid; an outlet for filtered fluid; a plurality of projections which are arranged in at least two rows in mutually juxtaposed relationship, project out of a base plate and are an integral component of the base... | 12/20/2005 |
| 6942797 | Filtration using pressure vessel with multiple filtration channels A filtration system includes an outer casing (210) that houses a plurality of elongated inner casings (220A–220F), which in turn house a plurality of filtration membranes. The outer casing, inner casing, and filtration membranes are disposed r... | 09/13/2005 |
| 6902671 | Chemical process system with multi-functional barrier filter A barrier filter useful for aseptically discharging both gaseous and liquid fluids from a chemical process system is disclosed The barrier filter comprises, within a common enclosure, one or several filter membranes having singularly or collectively a mixture or hyd... | 06/07/2005 |
| 6846413 | Microstructured filter A microstructured filter for a fluid, the filter having an inlet for unfiltered fluid and an outlet for filtered fluid, the filter comprising: a plurality of projections (7) which are arranged in at least two rows (3) in mutually juxtaposed relationshi... | 01/25/2005 |
| 6702941 | Fluid treatment elements adapted for cross flow treatment A fluid treatment element is adapted for cross flow filtration which includes a fluid treatment pack having first and second lengthwise ends, a fluid treatment layer that may be pleated, a first mesh layer disposed on a first side of the fluid treatment l... | 03/09/2004 |
| 6565749 | Microorganism filter and method for removing microorganism from water A filter for removing microorganisms from a fluid is provided by the invention. The filter includes a substrate having a reactive surface, and a polymer covalently bonded to the reactive surface of the substrate. The polymer includes a plurality of cation... | 05/20/2003 |
| 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 |
| 6423226 | Filter package A filter package having a long shelf-life and containing substantially no contaminants comprises a filter cartridge, a flexible bag surrounding the filter cartridge having walls comprising a polymeric material impervious to microorganisms and liquid water... | 07/23/2002 |
| 6387271 | Method for separating solid particulates from a liquid A method for removing iron-containing contaminants from condensate from a power generating plant includes passing the condensate through a plurality of pleated filter elements contained within a housing, including direct the condensate through a pleated h... | 05/14/2002 |
| 6338798 | Filter package A method of forming a filter package includes disposing a filter and a liquid in a container with the filter immersed in the liquid and sanitizing the liquid and the filter while in the container. After sanitizing, the container may be hermetically sealed... | 01/15/2002 |
| 6224767 | Fluid separation element assembly A fluid separation element assembly comprises a fluid separation element having a membrane unit and a wrapping material formed around the membrane unit, an anti-telescoping plate attached to at least one end of the fluid separation element at a condition ... | 05/01/2001 |
| 6197191 | Device for filtering and separating flow media The invention concerns an apparatus for filtering and separating flow media by reverse osmosis or ultrafiltration, in particular for water desalination and water purification, wherein there are provided a housing (10) having at least one feed (14a) for th... | 03/06/2001 |
| 6143174 | Filtration unit with pleated filtering elements There is disclosed a filtration unit for separating a substance from a fluid, the unit made up of at least one pleated filter element in a cylindrical housing, the housing in turn made up of two mating housing components and at least two fluid connectors,... | 11/07/2000 |
| 6103119 | Filter cartridges having track etched membranes and methods of making same A filter cartridge that includes a track etched membrane sealed therein in a leak-free manner, and a method for making the cartridge. The filter cartridge has a bubble point that is at least 50% of the bubble point of the track etched membrane. In one emb... | 08/15/2000 |
| 5988400 | Pourous fluorocarbon membrane, method for producing thereof and cartridge filter based on said membrane A porous fluorocarbon membrane has a porous support completely impregnated with tetrafluoroethylene/vinylidene fluoride copolymer. There is a process for producing this membrane by impregnating a porous support with a copolymer solution in a readily-boili... | 11/23/1999 |
| 5980759 | Dual media filter cartridge construction A filter cartridge is provided which includes (a) a wound depth filter or a cylindrical seamless depth filter and (b) a pleated filter having a lower micron retention rating than the depth filter. The depth filter and pleated filter surround a central ope... | 11/09/1999 |
| 5904846 | Filter cartridge having track etched membranes and methods of making same A filter cartridge that includes a track etched membrane sealed therein in a leak-free manner, and a method for making the cartridge. The filter cartridge has a bubble point that is at least 50% of the bubble point of the track etched membrane. In one emb... | 05/18/1999 |
| 5736051 | Polyvinylidene fluoride membrane and method for removing viruses from solutions The present invention provides an isotropic, skinless, porous, polyvinylidene fluoride membrane having a KUF of at least about 15 psi (103 kPa), and preferably below about 50 psi (345 kPa), when tested using liquid pairs having an interfacial t... | 04/07/1998 |
| 5702616 | Aramid fiber filtration sheet The present invention provides a polymeric, particularly aramid, fiber filtration sheet having a relatively small pore size and high pore uniformity. The present inventive aramid fiber filtration sheet preferably has a titer reduction against bacteria suc... | 12/30/1997 |
| 5514335 | Blood oxygenation system and reservoir and method of manufacture A novel integral cardiotomy/venous blood reservoir, blood oxygenator and heat exchanging device, method of making a blood oxygenating and heat exchanging device and an extracorporeal circulatory support circuit. The reservoir includes a novel blood defoam... | 05/07/1996 |
| 5468449 | Exchanger and method for manufacturing the same A method for manufacturing an exchanger includes the steps of folding sheet material in a series of pleats, placing the folded sheet material in a casing having an opening defined by walls with distal edges, covering the distal edges with end portions of ... | 11/21/1995 |
| 5460720 | Pleated membrane crossflow fluid separation device A fluid separation device, utilizing tubular or flat sheet membrane materials, bounded on the membrane side of the sheet by a sheet of a porous feed spacer material, and bounded on the support side of the membrane sheet by an optional porous permeate back... | 10/24/1995 |
| 5401403 | Membrane module and a method for its manufacture A method of producing a fluid purifier membrane module, sheets of membrane material are disposed in layers with intermediate spacer elements in a manner to obtain mutually alternating spaces for contaminated and purified fluid respectively. Mutually adjoi... | 03/28/1995 |
| 5203998 | Permanent backwashable filter structure A liquid-cleaning filtering system with distillation capability has twin permanent filter assemblies, each utilizing a wire mesh filter cartridge which is backwashed using an internal sprayer nozzle assembly. During the normal operation of the filter cart... | 04/20/1993 |
| 5200073 | Polymeric film filter assembly A flexible inflatable polymer film filter assembly or device is provided in pouch or sleeve form for filtration of fluid comprising at least one fluid porous dead-end filter panel located internally within the pouch or sleeve with the opposite end edges o... | 04/06/1993 |
| 5104536 | Polymeric film filter assembly A flexible inflatable filter assembly or device is provided in pouch or sleeve form for filtration of fluid comprising at least one fluid porous dead-end filter panel located internally within the pouch or sleeve with the opposite end edges of the filter ... | 04/14/1992 |
| 5102542 | Construction of canister-type filters Compound filters using two different filter element types are disclosed. When a carbon element is used it is of the concentric type having a central cavity. Filter elements for filtering very fine particles are used in addition. Various types of such elem... | 04/07/1992 |
| 5022988 | Device for plasma modification--composition and remodeling Compositions and devices are provided for the specific removal of components of plasma in efficient and economical ways. The devices provide for a tortuous path of the plasma through a high surface material to which is bound a binding compound for removal... | 06/11/1991 |
| 5015376 | Semi-rigid enhanced area filter element This invention is directed to a novel semi-rigid enhanced area filter element that can be installed and used with new or existing bag-type filter housings. The invention specifically refers to the pleated and padded element (5) fitted closely within a ret... | 05/14/1991 |
| 4929354 | Filter element having microporous membrane A filter element comprising a hydrophilic organic polymeric microporous filter membrane having a preformed substantially non-porous sealing area and a filter housing having, preferably, a hydrophobic thermoplastic sealing surface in thermoplastic sealing ... | 05/29/1990 |
| 4906371 | Filter element having microporous membrane A filter element containing a hydrophilic nylon microporous filter membrane having a preformed substantially non-porous sealing area of non-porous tape heat sealed to the membrane and a filter housing having preferably a hydrophobic thermoplastic sealing ... | 03/06/1990 |
