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| Number | Title | Issue Date |
| 8177891 | Membrane comprising oxyethylene groups The present invention relates to a membrane wherein said membrane comprises a polymerized composition that comprised prior to polymerization at least one type of compound comprising at least 70 oxyethylene groups and at least two polymerizable groups. The invention ... | 05/15/2012 |
| 8177892 | Membrane comprising oxyethylene groups The present invention relates to a membrane wherein said membrane comprises a continuous non-porous layer comprising a polymerized composition that comprised prior to polymerization at least one type of compound having a molecular weight of at least 1500 Da and comp... | 05/15/2012 |
| 7771521 | Hyperbranched polyimide-based hybrid material It is an object of the present invention to provide a polyimide-based hybrid material which is industrially and advantageously utilized because of having better gas permeability, electric characteristics, heat resistance, mechanical strength, and the like as compare... | 08/10/2010 |
| 7442303 | Microporous filter membrane, method of making microporous filter membrane and separator employing microporous filter membranes A filter membrane, methods of making such filter membrane and apparatus employing such filter membrane are disclosed, in which the filter membrane is a monolithic polymeric membrane that includes a polymeric filter layer including a micron-scale precision-shaped por... | 10/28/2008 |
| 7435284 | Parallel-plate diffusion gas dehumidifier and methods for use A parallel-plate diffusion gas dehumidifier has a treatment zone having at least one water-permeable membrane. The gas dehumidifier includes an untreated gas inlet, a treatment zone bounded by water-permeable membranes, a support structure for the membranes, access ... | 10/14/2008 |
| 7429287 | High efficiency gas sweetening system and method Disclosed are a method and system for sweetening a raw natural gas feed stream using a multi-stage membrane separation process, and in embodiments a two-stage membrane separation process. The method and system also include use of a gas turbine which operates with an... | 09/30/2008 |
| 7396391 | Electronic control apparatus A venting aperture is formed in an upper wall of a casing, a gas-permeable membrane supporting body is mounted to the casing so as to communicate between the venting aperture and an external portion through a communicating aperture, and a gas-permeable membrane is d... | 07/08/2008 |
| 7393391 | Fabrication of an anisotropic super hydrophobic/hydrophilic nanoporous membranes Anisotropic hydrophobic/hydrophilic nanoporous membranes and methods of forming anisotropic hydrophobic/hydrophilic nanoporous membranes are disclosed. The method of forming the nanoporous membrane includes growing a nanoporous oxide film on a substrate. A nanoporou... | 07/01/2008 |
| 7393388 | Spiral wound fuel stabilization unit for fuel de-oxygenation A deoxygenator includes a plurality of permeable membranes spirally wound about an exhaust tube for removing dissolved oxygen from a hydrocarbon fuel. The permeable membrane is spirally wrapped about the exhaust tube and defines fuel passages and exhaust passages. T... | 07/01/2008 |
| 7385803 | Tetravalent metal acid triphosphates This invention is based on the preparation of new solid acid triphosphates with compositions of the general formula M(IV)(HPO4)(H2PO4)2, where M(IV) is a tetravalent metal or a mixture of tetravalent metals. These compounds are insoluble in water the greater part of... | 06/10/2008 |
| 7367965 | Ostomy appliance with multiple openings for preventing filter input blockage An ostomy appliance with a front wall and a rear wall of flexible material forming a bag, the rear wall having an opening into the bag by which waste material can enter the bag. The bag has two or more vents through which gas may escape from the bag and a filter dev... | 05/06/2008 |
| 7341578 | Ostomy appliance with multiple openings for preventing filter input blockage An ostomy appliance having a vent covered by a filter. Gas inlet and outlet openings are provided that are in communication with a filter body and arranged so that in use gas flows through the filter body from the inlet opening to the outlet opening. The gas inlet o... | 03/11/2008 |
| 7323033 | Nanostructured surfaces having variable permeability A nanostructured substrate is disclosed having a plurality of substrate openings disposed between the nanostructures on the substrate. When a desired fluid comes into contact with the substrate, at least a portion of the fluid is allowed to pass through at least one... | 01/29/2008 |
| 7306647 | Mixed matrix membrane with mesoporous particles and methods for making and using the same A mixed matrix membrane for separating gas components from a mixture of gas components is disclosed. The membrane comprises a continuous phase polymer with inorganic porous particles, preferably molecular sieves, interspersed in the polymer. The polymer has a CO | 12/11/2007 |
| 7297184 | Apparatus and method for separating gases An apparatus and method to separate a mixture of gases—such as carbon dioxide and methane—by an inorganic membrane comprising a ceramic support and a silica layer made from a silicon elastomer sol. The apparatus and method can efficiently separate the gaseous mi... | 11/20/2007 |
| 7278422 | Open-circuit self-contained underwater breathing apparatus A self-contained open-circuit breathing apparatus for use within a body of water naturally containing dissolved air. The apparatus is adapted to provide breathable air to a diver. The apparatus comprises an inlet means for extracting a quantity of water from the bod... | 10/09/2007 |
| 7269991 | Permeation calibrator An apparatus, method, and system for ensuring a more accurate and precise calibration of gas or liquid analyzers using gas emitting permeation tubes for the production of calibration samples. The permeation devices are placed in a temperature-controlled housing to e... | 09/18/2007 |
| 7264650 | Ultrahigh-selectivity oxygen enrichment filled elastomeric silicone polymer membrane incorporating nanofillers A semipermeable separation element includes (a) a porous substrate, and (b) a film formed on the microporous substrate; the film comprising a silicone elastomer and a nanoparticle filler. The film preferably has an oxygen enrichment selectivity of at least 30, or ev... | 09/04/2007 |
| 7255725 | Porous inorganic membrane containing carbon; a process for its preparation; and use thereof A porous inorganic membrane comprises at least one inorganic phase having separating properties. Said membrane has a carbon content representing 0.05% to 25% by weight with respect to the mass of said inorganic phase and is selective to non-condensable gases. It is ... | 08/14/2007 |
| 7247191 | Crosslinked and crosslinkable hollow fiber membrane and method of making same utility A composition of and a method of making high performance hollow fiber membranes is described. The membranes have a high resistance to plasticization by use of a predetermined amount of crosslinking. The preferred polymer material for the membrane is a polyimide poly... | 07/24/2007 |
| 7226540 | MEMS filter module Various MEMS filter elements or modules are disclosed. One such MEMS filter module (34) includes a first film (70) and a second film (46) that are spaced and interconnected by a plurality of supports (78). A plurality of first flow ports ... | 06/05/2007 |
| 7214301 | Filter or filter-element for modified electro-dialysis (MED) purposes Filter or filter-element designated for Modified Electro-Dialysis (MED) purposes characterized in that the filter or filter-element comprises a porous, ceramic, mainly uniform material with functional, preferably ion selective groups grafted onto the inner, porous s... | 05/08/2007 |
| 7186351 | Injection valve A method for producing a filter element includes forming longitudinal ducts extending between upstream and downstream surfaces of the filter element, and installing a heating element for heating regions of walls of the ducts along longitudinal extent of the walls. T... | 03/06/2007 |
| 7179321 | Facilitated transport membranes comprising a porous support and a solid polymer electrolyte consisting of a transition metal salt and a polymer having phthalic structure The present invention relates to a facilitated transport membrane for separation of alkene hydrocarbons from hydrocarbon mixtures, comprising a porous support and a solid polymer electrolyte consisting of a transition metal salt and a polymer having phthalic structu... | 02/20/2007 |
| 7169213 | Multi-channel cross-flow porous device A multi-channel modular device (10) processes between two fluid streams of different compositions. The device (10) includes a porous body (150) having a first plurality of feed-flow pathways (110) disposed in the body (150) for tra... | 01/30/2007 |
| 7166146 | Mixed matrix membranes with small pore molecular sieves and methods for making and using the membranes A mixed matrix membrane is provided which comprises a continuous phase organic polymer and small pore molecular sieves dispersed therein. The molecular sieves have a largest minor crystallographic free diameter of 3.6 Angstroms or less. When these molecular sieves a... | 01/23/2007 |
| 7162933 | Gas sample conditioning system A gas sample and conditioning device for sampling gas in a storage or transport device and conditioning the gas to avoid dew point dropout of the gas. A chamber for regulating the temperature and the pressure of the gas is provided with external A.C. or D.C. power u... | 01/16/2007 |
| 7160275 | Ostomy pouches An ostomy pouch (10) includes a front wall (12) provided with a comfort layer (16) and a vent (22). An apertured cover layer (24) is secured to the front wall (12) through the comfort layer (16) to define a chamber fo... | 01/09/2007 |
| 7138006 | Mixed matrix membranes with low silica-to-alumina ratio molecular sieves and methods for making and using the membranes A mixed matrix membrane is provided which comprises a continuous phase organic polymer and small pore alumina containing molecular sieves dispersed therein. The molecular sieves have a silica-to-alumina molar ratio of less than 1.0, more preferably, less than 0.3, a... | 11/21/2006 |
| 7087269 | Multi-component composite membrane and method for preparing the same The present invention relates to a multi-component composite separate membrane and a method for preparing the same, and to a multi-component composite membrane comprising a support layer and active layers, wherein the support layer is located between the active laye... | 08/08/2006 |
| 7048856 | Ultrafiltration membrane, device, bioartificial organ, and methods The present invention relates to ultrafiltration. In particular, the present invention provides a compact ultrafiltration device and methods for generating an ultrafiltrate, both of which can be used for a variety of applications, including, but not limited to filte... | 05/23/2006 |
| 7028562 | Vacuum membrane extraction system The present invention relates to apparatus for sampling and analysis of gas phase molecules. A source of negative pressure is used to draw gas phase molecules through a gas-permeable membrane. The gas phase molecules are then directed into an analyzer, suitably a ga... | 04/18/2006 |
| 6929037 | Underground storage tank vapor pressure equalizer A vapor pressure equalizer system for reducing the pressure of a storage tank that contains volatile liquid or fuel. A conduit is connected to the storage tank that draws vapors present in the ullage of the storage tank into the conduit. The vapors are circulated th... | 08/16/2005 |
| 6929038 | Underground storage tank vapor pressure equalizer A vapor pressure equalizer system for reducing the pressure of a storage tank that contains volatile liquid or fuel. A conduit is connected to the storage tank that draws vapors present in the ullage of the storage tank into the conduit. The vapors are circulated th... | 08/16/2005 |
| 6908552 | Method of producing nanostructures in membrances, and asymmetrical membrane The invention relates to a method of producing nanostructures in membranes, in which method a membrane consisting of a polymer material is irradiated with charged particles, especially ions, to produce particle tracks. The particle tracks in the membrane are etched ... | 06/21/2005 |
| 6899744 | Hydrogen transport membranes Composite hydrogen transport membranes, which are used for extraction of hydrogen from gas mixtures are provided. Methods are described for supporting metals and metal alloys which have high hydrogen permeability, but which are either too thin to be self supporting,... | 05/31/2005 |
| 6860922 | Hollow fiber membrane for the degassing of inks, ink degassing method, ink degassing apparatus, method for the fabrication of an ink cartridge, and ink The present invention provides a gas-permeable hollow fiber membrane having an inner diameter of 50 to 500 μm and a membrane thickness of 10 to 150 μm, which is preferably a composite hollow fiber membrane having a three-layer structure consisting of a nonporous l... | 03/01/2005 |
| 6730145 | Treating gas separation membrane with aqueous reagent dispersion A method of post treating gas separation membranes to seal porous defects that are initially produced in an ultra thin selectively gas permeable layer of the membrane involves contacting the defect-bearing section of the membrane with a suspension containing caulkin... | 05/04/2004 |
| 6726744 | Mixed matrix membrane for separation of gases An improved mixed matrix membrane for the separation of gases comprises polyethylene glycol, silicone rubber and activated carbon on a porous support. The membrane preferably also comprises a carbonate such as potassium carbonate. The gases which may be separated by... | 04/27/2004 |
| 6696284 | Biological filter for the purification of waste gases The present invention relates to a biological filter for the purification of waste gases comprising a bed of biologically active carrier material consisting of pith extracted from coconut husks, the bed being contained such that the waste gases are brough... | 02/24/2004 |
