Abstract:
Redundant filtration system that includes at least one barrier filter as a process filter, the barrier filter having both hydrophilic and hydrophobic paths, allowing both fluid and gas permeability. The need for vents is eliminated, as is an intermediate drain filter. The device also can be dried in series. The filtration system includes a network of conduits and receptacles, the network receiving liquid raw and/or starting material at one end, conducting it through the process stream defined thereby, and producing the desired liquid product at another end. The network is provided with one or more inputs for introducing liquid raw material into the fluid process stream, and one or more output ports for discharging fluid out of the fluid process stream. The network is preferably an essentially closed network, and also, preferably sterile and/or aseptic.
Abstract:
A negatively charged microporous filtration medium having a high charge density comprising a porous substrate and a polymerized cross-linked polymeric coating located on the inner and outer surfaces of the substrate. The coating may be formed from a reactant solution comprising negatively charged cross-linkable polymerizeable acrylamidoalkyl monomers and acrylamido cross-linking agents which are polymerized in situ on the substrate. The negatively charged microporous filtration medium are suitable for use as prefiltration membranes for selectively removing protein aggregates from a protein solution.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for reducing the performance variability of a membrane scaling device. SOLUTION: Scaling device performance uncertainty is reduced, thereby reducing the scaling safety factor, by specifying a narrow range or subset of the set of the membrane of all qualified manufactured membranes for installation into scaling devices. In certain embodiments, the scalability factor is reduced by determining where within the performance distribution a particular membrane lies, and adjusting the scaling factor accordingly. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
Método para filtrar una materia prima líquida en un flujo de proceso para producir un producto, que comprende proporcionar un sistema de filtración que comprende: una red que define un flujo de proceso de fluidos, donde dicha red tiene una o más entradas para introducir fluido en dicho flujo de proceso de fluidos, y una o más salidas para descargar fluido de dicho flujo de proceso de fluidos; un primer filtro (F-1) de proceso de grado de esterilización dentro de dicho flujo de proceso de fluidos; un segundo filtro (F-2) de proceso de grado de esterilización dentro de dicho flujo de proceso de fluidos, donde dicho segundo filtro (F-2) de proceso de grado de esterilización se encuentra situado en serie con dicho primer filtro (F-1) de proceso de grado de esterilización y aguas abajo del mismo; en donde al menos uno de entre dicho primer filtro (F-1) de proceso de grado de esterilización y dicho segundo filtro (F-2) de proceso de grado de esterilización es un filtro de barrera (BF) que comprende, dentro de un alojamiento común, una pluralidad de membranas de filtro hidrófilas y una pluralidad de membranas de filtro hidrófobas, y en donde dichas membranas de filtro hidrófilas se encuentran intercaladas entre dichas membranas de filtro hidrófobas, donde el alojamiento común tiene una entrada de fluidos, una salida de fluidos, y una trayectoria de fluido entre las mismas, estando todas las membranas de filtración del filtro de barrera situadas dentro de la trayectoria de fluido; y la filtración de dicha materia prima líquida con dicho primer filtro (F-1) de proceso de grado de esterilización y dicho segundo filtro (F-2) de proceso de grado de esterilización para producir dicho producto.
Abstract:
Un dispositivo de filtración que comprende una primera y una segunda placa de soporte, en el que la primera y segunda placas de soporte están formadas por fluoruro de polivinilideno, cada una de las placas de soporte primera y segunda tienen una primera superficie enfrentada y una segunda superficie opuesta a la primera superficie de cada soporte placa, las placas de soporte primera y segunda tienen cada una al menos un puerto formado desde la primera superficie hasta la segunda superficie de cada placa de soporte respectivamente, en la que la primera superficie de la primera placa de soporte está unida por calor a una membrana porosa seleccionada del grupo que consiste de polisulfona, polietersulfona, mezclas de los mismos y copolímeros de los mismos y la primera superficie de la primera placa de soporte está unida por calor a la primera superficie de la segunda placa de soporte alrededor de una periferia de la primera superficie, en la que la periferia es un área fuera del área donde la primera superficie de la primera placa de soporte está unida por calor a la membrana porosa, proporcionando así una membrana porosa sellada integralmente pase a la primera placa de soporte y una segunda placa de soporte herméticamente sellada integralmente a la primera placa de soporte.
Abstract:
Redundant filtration system that includes at least one barrier filter as a process filter, the barrier filter having both hydrophilic and hydrophobic paths, allowing both fluid and gas permeability. The need for vents is eliminated, as is an intermediate drain filter. The device also can be dried in series. The filtration system includes a network of conduits and receptacles, the network receiving liquid raw and/or starting material at one end, conducting it through the process stream defined thereby, and producing the desired liquid product at another end. The network is provided with one or more inputs for introducing liquid raw material into the fluid process stream, and one or more output ports for discharging fluid out of the fluid process stream. The network is preferably an essentially closed network, and also, preferably sterile and/or aseptic.
Abstract:
PROBLEM TO BE SOLVED: To provide a filtration apparatus which utilizes spiral wound filter cartridge construction to minimize permeate flow losses while providing satisfactory permeate production capacity.SOLUTION: The filtration apparatus includes: a housing having an inlet (14) and an outlet (16); and a plurality of spirally wound filtration cartridges (18, 24). The filtration cartridges include two filter layers, a feed spacer layer and a permeate spacer layer. Seals are provided to prevent admixtures of feed and permeate and to permit recovery of permeate in a dead-end filtration mode.
Abstract:
PROBLEM TO BE SOLVED: To provide a device allowing individual test of each layer of thin membrane of an integral multi-layered device. SOLUTION: This multi-layered filtration apparatus is provided with a filter casing having two or more filtering layers. Each layer is preferably disposed with a clearance from each other to provide a chamber or gap between them. A port or a vent is disposed in the chamber or gap between the two layers. This port or vent provides an intermediate passage for gas or liquid passing through one layer of the filter or thin film and discharged from the port or vent for the integrity test. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a device capable of individually testing each layer of thin membrane of an integral multi-layered device. SOLUTION: This device can perform a continuous (or serial) filter via two or more filtering layers for obtaining a desired characteristics of preserving ratio or the like, and test the integrity of respective layers separately, and has two or more separate filtering layers. Each of them is formed of two or more filtering regions containing one each filter layer 2 and 20. Each region has one each filter layer 2, 20, and a first end cap 6 connected to a first end part of the filter, and a second end cap 10 connected to a second end part of the filter. These regions are disposed concentrically in such a manner that a first region is disposed inside a second region, and the second region is disposed inside a third region. Each region is separately formed, and integrity test is performed separately before a final assembly. COPYRIGHT: (C)2007,JPO&INPIT