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| Number | Title | Issue Date |
| 8061532 | Process of forming multilayered structures The present invention provides for a method of producing an integral multilayered porous membrane by simultaneously co-casting a plurality of polymer solutions onto a support to form a multilayered liquid sheet and immersing the sheet into a liquid coagulation bath ... | 11/22/2011 |
| 7891500 | Process of forming multilayered structures The present invention provides for a method of producing an integral multilayered porous membrane by simultaneously co-casting a plurality of polymer solutions onto a support to form a multilayered liquid sheet and immersing the sheet into a liquid coagulation bath ... | 02/22/2011 |
| 7743929 | Process of forming multilayered structures The present invention provides for a method of producing an integral multilayered porous membrane by simultaneously co-casting a plurality of polymer solutions onto a support to form a multilayered liquid sheet and immersing the sheet into a liquid coagulation bath ... | 06/29/2010 |
| 7648034 | Coated membranes and other articles The present invention provides porous media or membranes having a surface coating that includes a cross-linked terpolymer which has a superior combination of properties, including heat stable biomolecule resistant adsorptive properties, resistance to strong alkaline... | 01/19/2010 |
| 7588886 | Process for the enumeration and identification of microorganisms A test for the detection, enumeration and identification of microorganisms in a fluid sample is taught. The test uses a filter through which a fluid sample is passed and onto which organisms within the fluid are deposited. It is then incubated on a growth medium and... | 09/15/2009 |
| 7229665 | Process of forming multilayered structures The present invention provides for a method of producing an integral multilayered porous membrane by simultaneously co-casting a plurality of polymer solutions onto a support to form a multilayered liquid sheet and immersing the sheet into a liquid coagulation bath ... | 06/12/2007 |
| 7208200 | Process of forming multilayered structures The present invention provides for a method of producing an integral multilayered porous membrane by simultaneously co-casting a plurality of polymer solutions onto a support to form a multilayered liquid sheet and immersing the sheet into a liquid coagulation bath ... | 04/24/2007 |
| 6893562 | Underdrain for filtration membrane A device and method for removal of liquid from the downstream side of a membrane or a well, such as a well of a multiwell plate. More specifically, the present invention is directed to a wicking structure, which channels droplets of liquid away from a membrane in co... | 05/17/2005 |
| 6869572 | High density cast-in-place sample preparation card A card or insert having a plurality of recesses for a sample preparation device, the card containing cast-in-place composite and/or non-filled structures which are useful as sorptive or reactive media or for size-based separations. Any particular card size or config... | 03/22/2005 |
| 6830717 | Cast membrane structures for sample preparation A method for casting-in-place composite and/or non-filled structures which are useful as sorptive or reactive media or for size-based separations. Any particular housing size or configuration can be used, and the inclusion of a large amount of adsorptive particles i... | 12/14/2004 |
| 6740241 | Chromatography column system and method of packing of a chromatography column A method of packing a chromatography column (101) with a chromatography media (104) from a vessel (102) in which the chromatography media (104) is pumped into the chromatography column (101) to pack the column and excess fluid from... | 05/25/2004 |
| 6726822 | Electrodeionization process An improved electrodeionization system for removing ions from liquids passed therethrough, comprising a flow-through electrodeionization module, and a power supply electrically connected to the electrodeionization module electrodes so as to establish a voltage gradi... | 04/27/2004 |
| 6716350 | Microplate protective tray undercover A laboratory device design particularly for a multiplate format that includes a tray having at least one well with a support associated with the well, and a removable undercover. The undercover protects the support or membrane from external contamination without cau... | 04/06/2004 |
| 6645722 | Method for sequencing reaction cleanup by constant differential pressure ultrafiltration A method for sequencing reaction cleanup adapted to remove contaminants from a sequencing reaction, comprising the steps of: providing a defined quantity of sequencing reaction product; providing at least one ultrafiltration membrane having at least one s... | 11/11/2003 |
| 6642005 | Method for sequencing reaction cleanup by constant pressure differential ultrafiltration A method for sequencing reaction cleanup adapted to remove contaminants from a sequencing reaction, comprising the steps of: providing a defined quantity of sequencing reaction product; providing at least one ultrafiltration membrane having at least one s... | 11/04/2003 |
| 6635201 | Cast membrane structures for sample preparation A method for casting-in-place composite and/or non-filled structures which are useful as sorptive or reactive media or for size-based separations. Any particular housing size or configuration can be used, and the inclusion of a large amount of adsorptive ... | 10/21/2003 |
| 6514463 | Well(s) containing filtration devices A single or multiwell plate using membrane, preferably an ultrafiltration membrane to filter selected solutes from a liquid is disclosed. In particular, a preferred construction and method of sealing the membrane to the interior of the well so as to form ... | 02/04/2003 |
| 6498240 | Method for sequencing reaction cleanup by constant pressure diffential ultrafiltration A method for sequencing reaction cleanup adapted to remove contaminants from a sequencing reaction, comprising the steps of: providing a defined quantity of sequencing reaction product; providing at least one ultrafiltration membrane having at least one s... | 12/24/2002 |
| 6490777 | Methods for producing solid subassemblies of fluidic particulate matter The present invention provides methods and devices for producing a subassembly for devices designed to receive particulate matter in a compartment of predetermined shape.... | 12/10/2002 |
| 6479300 | Metal loaded ligand bound membranes for metal ion affinity chromatography Methods, compositions and devices for purifying polypeptides and/or proteins using metal loaded ligand bound membranes by metal ion affinity chromatography are described.... | 11/12/2002 |
| 6465201 | Method for rapidly detecting and enumerating microorganisms in mammalian cell preparations using ATP bioluminescence A method for rapidly detecting and enumerating microorganisms, having a level of microbial ATP, in the presence of mammalian cell preparations, comprising the steps of: providing a mammalian cell preparation comprising mammalian cells having a level of ma... | 10/15/2002 |
| 6406623 | Tangential flow filtration apparatus A tangential flow filtration apparatus is provided which includes a liquid feed reservoir and a tangential flow filtration module connected together by manifolds. The manifolds eliminate the need for tubular conduits, thereby effecting a reduction in reci... | 06/18/2002 |
| 6403008 | Method for overwelding filter cassettes and devices produced therefrom The present invention provides a filter cartridge or filter unit (11) produced by a thermoplastic overmolding process that allows for using a single mold for overmolding a variety of different sized filter elements (12) or membranes and a method for seali... | 06/11/2002 |
| 6391178 | Electrodeionization system An improved electrodeionization system for removing ions from liquids passed therethrough, comprising a flow-through electrodeionization module, and a power supply electrically connected to the electrodeionization module electrodes so as to establish a vo... | 05/21/2002 |
| 6365023 | Electrodeionization process An electrodeionization-based process for purifying water to remove ionic species is disclosed. Ionic removal is accomplished by supplying an electrical current between an anode and a cathode of an electrodeionization module in the range of about 1.5 to 15... | 04/02/2002 |
| 6354443 | Surface modified porous membrane and process A porous membrane product is provided which is formed from a porous membrane substrate having its surface completely modified with a perfluorocarbon copolymer composition. The porous membrane product has substantially the same permeability as the porous m... | 03/12/2002 |
| 6343617 | System and method of operation of a digital mass flow controller The mass flow controller of the present invention includes a sensor. This sensor is used to detect a mass flow within a gas line. Additionally, this sensor provides an output to an electronic control system coupled to the sensor. The electronic control sy... | 02/05/2002 |
| 6319236 | Universal outlet for filter units Filter device comprising a filter housing, a filter disposed in the filter housing, an inlet, and an opposed outlet spaced from the inlet, wherein the outlet comprises an extension from the housing, the extension extending longitudinally in the direction ... | 11/20/2001 |
| 6309605 | Well(s) containing filtration devices A single or multiwell plate using membrane, preferably an ultrafiltration membrane to filter selected solutes from a liquid is disclosed. In particular, a preferred construction and method of sealing the membrane to the interior of the well so as to form ... | 10/30/2001 |
| 6306191 | Sanitary seal design and vent using such seal A seal, a vent for a filter housing and a system for using them. The seal is designed a first outer seal having a closed outer periphery that divides and isolates a first inner area from the outside environment and a second inner seal formed along a portion of... | 10/23/2001 |
| 6273271 | Surface modified porous membrane and process A porous membrane product is provided which is formed from a porous membrane substrate having its surface completely modified with a perfluorocarbon copolymer composition. The porous membrane product has substantially the same permeability as the porous m... | 08/14/2001 |
| 6221476 | Polymeric membranes functionalized with polyhydroxypyridinone ligands Compositions and methods for selectively binding metal ions from a source solution comprise using a polyhydroxypyridinone-containing ligand covalently bonded to a membrane support having the formula M--A--L(HOPO)n. M is a membrane having a hydr... | 04/24/2001 |
| 6200474 | Cast membrane structures for sample prepartion A method for casting-in-place composite and/or non-filled structures which are useful as sorptive or reactive media or for size-based separations. Any particular housing size or configuration can be used, and the inclusion of a large amount of adsorptive ... | 03/13/2001 |
| 6197085 | Method for forming titanium anisotropic metal particles A method for forming dendritic metal powders, comprising the steps of: (1) heating a powder comprising non-dendritic particles, under conditions suitable for initial stage sintering, to form a lightly sintered material; and (2) breaking the lightly sinter... | 03/06/2001 |
| 6193778 | Method for forming chromium anisotropic metal particles A method for forming dendritic metal powders, comprising the steps of: (1) heating a powder comprising non-dendritic particles, under conditions suitable for initial stage sintering, to form a lightly sintered material; and (2) breaking the lightly sinter... | 02/27/2001 |
| 6179132 | Surface modified polymeric substrate and process A porous membrane is provided which is formed from a porous polyperfluorocarbon membrane substrate having its surface modified with a perfluorocarbon polymer composition. The modified surface is directly wet with an aqueous liquid.... | 01/30/2001 |
| 6131649 | Heat exchange apparatus A heat exchange apparatus is provided which is formed from at least one multilayer presealed element and at least one monolayer element that are insert molded together. The heat exchange apparatus is provided with an inlet and an outlet for a process flui... | 10/17/2000 |
| 6123849 | Chromatographic column and valve A chromatography column having at least one central slurry valve positioned at either the top cell assembly and/or the bottom cell assembly. The central slurry valves have a pneumatically actuated valve sleeve which can be shifted to create two different ... | 09/26/2000 |
| 6110375 | Process for purifying water Water to be purified is passed through a reverse osmosis step to produce a pure water stream and a waste water stream. The waste water is directed to a deionization step to produce purified deionized water which is recycled to the reverse osmosis step. Th... | 08/29/2000 |
| 6096872 | Viral clearance process Methods for producing immunoglobulins and in particular anti-D immunoglobulin substantially free of virus and product resulting therefrom. Specifically provided are methods for nanofiltration of the anti-D immunoglobulin in high ionic strength buffer and ... | 08/01/2000 |
