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| Number | Title | Issue Date |
| 7938891 | Using ionic liquids Carbon dioxide or other gases can be separated from gas streams using ionic liquid, such as in an electrochemical cell. For example, a membrane can contain sufficient ionic liquid to reduce ionic current density of at least one of protons and hydroxyl ions, relative... | 05/10/2011 |
| 7938892 | Producing articles that include ionic liquids Ionic liquids can be immobilized in a membrane by, for example, bonding to a support such as a matrix, or by inclusion within a gel. Immobilized ionic liquids can be used in a number of applications, such as separation of carbon dioxide or other gases from gas strea... | 05/10/2011 |
| 7850764 | Reactive membrane process for the removal of vapor phase contaminants Generally, the present invention provides a method and apparatus for removing a vapor phase contaminant from a gas stream, thereby reducing the concentration of the vapor phase contaminant in the gas stream. In one embodiment, the present invention provides a method... | 12/14/2010 |
| 7367216 | Phased micro analyzer V, VI A micro fluid analyzer having a concentrator and two or more separators. The analyzer may have one, two or more pumps. The analyzer may have a hyper pre-concentrator having a number of channels. There are numerous detectors positioned along the flow path of the anal... | 05/06/2008 |
| 7318854 | System and method for selective separation of gaseous mixtures using hollow fibers A system and method for separation of a gas, e.g., carbon dioxide, from a gaseous mixture using a hollow fiber membrane module. The module contains an absorbent solution that is effective in absorbing the gas for an extended period, e.g., eight hours, without regene... | 01/15/2008 |
| 7152430 | Method of separating COfrom hydrocarbon gas A method of separating CO2 from a hydrocarbon gas inlet stream that is within predetermined pressure and temperature ranges including the steps of subjecting the inlet stream to fractional distillation providing a bottom product stream and a distillation ... | 12/26/2006 |
| 7104112 | Phased micro analyzer IV A fluid analyzer having a concentrator and separator for concentrating and separating fluid samples at pressures up to about 10,000 psi (˜700 bar). The concentrator and separator may consist of a solid-state thin-film heater-adsorber and a channel supported by a so... | 09/12/2006 |
| 6958085 | High performance immobilized liquid membrane for carbon dioxide separations An immobilized liquid membrane has a substrate. A plurality of capsules is disposed on the substrate. Each of the capsules is permeable to a first gas of a mixture of gasses comprising the first gas and a second gas. Each of the capsules is substantially impermeable... | 10/25/2005 |
| 6890372 | Denuder assembly for collection and removal of soluble atmospheric gases A denuder assembly is adapted for the collection and removal of a gaseous analyte from a sample gas. The denuder includes a housing including an internal cavity, a sample gas inlet fluidly coupled with a sample gas source, a denuder liquid inlet fluidly coupled with... | 05/10/2005 |
| 6800118 | Gas/liquid separation devices A gas/liquid separation element is provided comprising: a frame having an opening therein; waterproof/moisture permeable sheets affixed to both sides thereof so as to cover the opening, whereby the frame and waterproof/moisture permeable sheets define a liquid flow ... | 10/05/2004 |
| 6666906 | Gas dehydration using membrane and potassium formate solution Potassium or other alkali metal formate solution is used to absorb moisture from gas through a membrane. The membrane may be supported on permeable tubes, and the potassium or other alkali metal formate may be regenerated for reuse, preferably by a cavita... | 12/23/2003 |
| 6645276 | Solid state polymer electrolyte facilitated transport membranes containing surfactants A facilitated transport membrane with improved permeance and selectivity to alkene-based unsaturated hydrocarbons is provided. The facilitated transport membrane includes a solid state polymer electrolyte and additionally a non-volatile surfactant that en... | 11/11/2003 |
| 6635103 | Membrane separation of carbon dioxide A method for the separation of carbon dioxide from a gas mixture is described in which a dendrimer selective for carbon dioxide is present in an immobilized liquid membrane, the dendrimer being either in pure form or optionally with at least one solvent, ... | 10/21/2003 |
| 6526805 | Apparatus for continuously determining volatile substances dissolved in insulating fluid An apparatus and method are provided for continuously monitoring the operation of electrical equipment and preventing critical operational failures. The invention quantitatively determines the concentrations of gas and/or vapor (including water) component... | 03/04/2003 |
| 6332913 | Membrane module for selective gas separation A membrane module for selective gas separation includes one or more separation units stacked one on the other, and at least one of interposed frame plates or stack-end frame plates. Each separation unit includes a support plate with a separation gas recei... | 12/25/2001 |
| 6228145 | Method for removing carbon dioxide from gases A method for removing and preventing discharge into the atmosphere of carbon dioxide from combustion gases and natural gas from installations for production of oil and/or gas, wherein the combustion gas is passed to an absorber containing a solvent, where... | 05/08/2001 |
| 6156096 | Gas separation using hollow fiber contained liquid membrane A method of separating at least one gaseous component from a feed comprising a mixture of gases using a liquid membrane barrier and a sweep fluid is disclosed that includes selecting a sweep gas or a sweep liquid membrane and providing a treatment zone in... | 12/05/2000 |
| 6126723 | Microcomponent assembly for efficient contacting of fluid The present invention is a fundamental method and apparatus of a microcomponent assembly that overcomes the inherent limitations of state of the art chemical separations. The fundamental element enabling miniaturization is the porous contactor contained w... | 10/03/2000 |
| 6083297 | Gas dehydration membrane with low oxygen and nitrogen permeability The invention relates to a gas dehydration membrane comprising a membrane having pores communicating between a first and an opposing second surface of the membrane and further having an average pore diameter on the first surface of the membrane which is a... | 07/04/2000 |
| 6048383 | Mass transfer composite membrane for a fuel cell power plant A mass transfer composite membrane for use with a fuel cell power plant includes a transfer medium core between opposed, rigid, porous support sheets. An inlet surface of the composite membrane is positioned in contact with an oxidant inlet stream of a fu... | 04/11/2000 |
| 5876486 | Method and apparatus for removing carbon dioxide The invention relates to a method and to an apparatus for continuously removing metabolically produced carbon dioxide from respired air, such as the air found in life support systems or cabin circulating systems, using two sets of hollow fibers disposed i... | 03/02/1999 |
| 5853582 | Tubular inorganic filter element having increased mechanical strength and increased filter area An inorganic filter element for filtering a fluid medium in order to recover a filtrate, the filter element being of the type including an inorganic rigid porous support of cylindrical shape having a longitudinal central axis, and channels formed in the s... | 12/29/1998 |
| 5749941 | Method for gas absorption across a membrane The invention relates to a method for the absorption of one or more gaseous components from a gas phase, in that the gas phase with the component(s) to be absorbed present therein is brought into contact with a liquid phase, wherein the gas phase and the ... | 05/12/1998 |
| 5580452 | Moving liquid membrane modules The present invention relates to an improved design for a moving liquid membrane module. In one embodiment, the tubular or hollow fiber module, at least one tubular or hollow fiber element is contained within a housing. This element comprises an inner tub... | 12/03/1996 |
| 5482859 | Method and device for feeding gaseous substances into liquid media The device for feeding gaseous substances into liquid media comprises a number of hollow membrane bodies which are permeable to gas and contain the liquid media. These membranes are arranged with a distance between them in such a way that they can be reac... | 01/09/1996 |
| 5445669 | Membrane for the separation of carbon dioxide A membrane for the separation of carbon dioxide is disclosed which includes a hydrogel film of a cross-linked, vinyl alcohol/acrylic acid salt copolymer impregnated with an aqueous carrier solution containing a carbon dioxide carrier dissolved therein. A ... | 08/29/1995 |
| 5411580 | Oxygen-separating porous membranes Oxygen-separating porous membranes comprise a complex of (a) a transition metal (II) ion, (b) a ligand, and (c) an aromatic amine, retained in the pores of a substrate.... | 05/02/1995 |
| 5395426 | Device for the removal and concentration of organic compounds from the atmosphere A device and method for removing, concentrating and analyzing airborne organic compounds. The device includes a nonporous membrane which contains a collection media. The liquid collection media typically includes a component which has a molecular weight t... | 03/07/1995 |
| 5281254 | Continuous carbon dioxide and water removal system Carbon dioxide and water vapor are continuously removed by a venting membrane system which employs porous membranes and a liquid amine based sorbent, and which has a partial pressure gradient across the porous membranes. The partial pressure gradient indu... | 01/25/1994 |
| 5135547 | Facilitated liquid membranes for olefin/paraffin gas separations and related process A facilitated liquid membrane for the separation of olefins from a gaseous feed stream comprises a porous support structure (10, 15) and a liquid membrane which comprises an aqueous solution containing a metal salt facilitator capable of coordinating with... | 08/04/1992 |
| 5131928 | High pressure facilitated membranes for selective separation and process for the use thereof The subject invention relates to a membrane for the selective separation of at least one component of a gaseous feed stream comprising a porous membrane, having pores of from about 10 Angstroms to about 200 Angstroms, the pores containing a facilitator li... | 07/21/1992 |
| 5110326 | Immobilized liquid membrane The present invention is a single-ply immobilized liquid membrane comprising an aqueous liquid membrane immobilized within a hydrophobic microporous support.... | 05/05/1992 |
| 5100555 | Method and system for removing radon from radon containing water Method and apparatus are described for removing dissolved radon gas from water for the purpose of reducing the exposure of household occupants to elevated airborne Rn levels, using a radon-permeable membrane at the interface between gaseous and liquid pro... | 03/31/1992 |
| 4973434 | Immobilized liquid membrane The present invention is a single-ply immobilized liquid membrane comprising an aqueous liquid membrane immobilized within a hydrophobic microporous support, and a method of preparing such an immobilized liquid membrane. The present invention also include... | 11/27/1990 |
| 4954145 | Filled membranes for separation of polar from non-polar gases Gas permeable, filled pore membranes in which the pores are filled with a substantially non-aqueous mixture of a polyhydroxy solvent and a gas carrier. A typical example is a membrane filled with glycerol and triethanolamine.... | 09/04/1990 |
| 4900448 | Membrane dehumidification The instant invention provides a method and system for dehumidifying air by microphorous organic hollow fibers having a hygroscopic liquid disposed in the pores thereof for providing a concentration gradient sufficient to provide a continuous water remova... | 02/13/1990 |
| 4888032 | Salts of cationic-metal dry cave complexes Salts containing cations of the formula: ##STR1## (in which M is Co, Fe, Cr or Mn, X, Y, R1, The Government has rights in this invention pursuant to Contract Number CHE-75-14837 awarded by the National Science Foundation.... | 12/19/1989 |
| 4840819 | Method for preparing composite membranes for enhanced gas separation Composite membranes having advantageous combinations of selectivity and permeability are prepared by the coating of a separation layer on a porous support layer containing a controlled amount of liquid in the range of from about 10% to about 90% by weight... | 06/20/1989 |
| 4834779 | Process for membrane seperation of gas mixtures A method for the substantial separation of at least one gas component from a gas mixture to generate a residue gas substantially depleted of the gas components to be separated. A semipermeable membrane is provided which has a feed gas side and a sweep gas... | 05/30/1989 |
| 4824443 | Gas separation by composite solvent-swollen membranes There is disclosed a composite immobulized liquid membrane of a solvent-swollen polymer and a microporous organic or inorganic support, the solvent being at least one highly polar solvent containing at least one nitrogen, oxygen, phosphorous or sulfur ato... | 04/25/1989 |
