U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Quotables

"Without question, the greatest invention in the history of mankind is beer. Oh, I grant you that the wheel was also a fine invention, but the wheel does not go nearly as well with pizza."

Dave Barry

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 210/640 - Passing through membrane in vapor phase


Subclass of Class 210 - Liquid purification or separation
Definition: Process in which a constituent of the liquid diffuses through
No. of patents: 404
Last issue date: 05/29/2012


1                      
NumberTitleIssue Date
8187464Apparatus and process for desalination of brackish water using pressure retarded osmosis
Water from underground and other sources is brackish and not suitable for human consumption. Naturally present dissolved chemicals in water make it brackish. The precipitants and dissolved chemicals need to be separated from water to make it consumable. A combinatio...
05/29/2012
8147697Apparatus and process for desalination of brackish water
Water from underground and other sources of water are brackish and not suitable for human consumption. Naturally present dissolved chemicals in water make it brackish. The precipitants and dissolved chemicals need to be separated from water to make it consumable. A ...
04/03/2012
8142662Dehydrating system and method for control of spare membrane unit
A dehydrating system is designed to maintain the availability of a plant having the dehydrating system using a water separation membrane by allowing a water separation membrane unit to be replaced while the plant is in operation. The dehydrating system comprises at ...
03/27/2012
8128826Ethanol processing with vapour separation membranes
A process for separating vapors, for example for separating water from ethanol, uses a gas separation membrane unit. Permeate from the membrane unit is compressed and may be used for example as heating steam for distillation. The membrane unit may have two or more s...
03/06/2012
8119006Ethanol stable epoxy amine based membrane for aromatics separation
The present invention is directed to a membrane for aromatics separation that is stable in an alcohol containing environment. The polymeric membrane is a epoxy amine based membrane. ...
02/21/2012
8029675Membrane distillation process and membrane distillation device
In a membrane distillation process in which a liquid to be concentrated is separated from a vapor space (11) by a vapor-permeable liquid- or water-tight membrane or membrane wall (13), to set the absolute pressure of the liquid to be concentrated a red...
10/04/2011
8017016Method and apparatus for pervaporation control in chromatographic systems
A method for controlling pervaporation through a membrane includes assessing the vapor pressure of each component material of a mobile phase disposed on a retentate side of the membrane, and maintaining a designed environment on a permeate side of the membrane. The ...
09/13/2011
7871520High-temperature membrane distillation
A membrane module comprising an outer casing having an interior region, a plurality of hollow fiber membranes extending through at least a portion of the interior region, and having exterior surfaces and inner hollow regions, where the inner hollow regions are confi...
01/18/2011
7837877Process for separating components of a multi-component feed stream
Provided is a process and apparatus for separating a multi-component feed stream wherein a porous separator is used to effectively create, via permeation and phase change, at least three fractions of differing compositions. ...
11/23/2010
7803275Membrane separation process using mixed vapor-liquid feed
The present invention pertains to a process for the separation of aromatics from a feed stream, including aromatics and non-aromatics by selectively permeating the aromatics through a membrane comprising feeding a mixed phase vapor-liquid feed to a membrane wherein ...
09/28/2010
7758754Pervaporation process and assembly
The invention is a pervaporation process and pervaporation equipment, using a series of membrane modules, and including inter-module reheating of the feed solution under treatment. The inter-module heating is achieved within the tube or vessel in which the modules a...
07/20/2010
7622045Hydrophilic cross-linked polymeric membranes and sorbents
Hydrophilic cross-linked polymeric membranes, when prepared according to the process of the present invention, are unique in character in as much as the steady state permeability of the membrane has been altered by blending and cross-linking polyalkyl amines and pol...
11/24/2009
7608188Vacuum enhanced direct contact membrane distillation
The present disclosure provides methods and systems for purifying an impaired liquid. In a particular example, the disclosure provides methods and systems for purifying water containing a solute. A feed stream of solute containing water is introduced in a flow chamb...
10/27/2009
7604746Pervaporation composite membranes
The present application discloses a composite membrane comprising (a) a support member that has a plurality of pores extending through the support member and (b) a cross-linked copolymer comprising (i) a cationic monomer and an anionic monomer and/or (ii) a zwitteri...
10/20/2009
7488421Method and device for the purification, especially desalination, of water
Water processing method, in particular for producing fresh water from salt water by membrane distillation. In comparison with previously known methods, a significant reduction in investment cost and operating cost can be achieved by the combination of the following ...
02/10/2009
7479227Liquid-phase separation of low molecular weight organic compounds
A process for separating a component from a low molecular weight organic mixture by pervaporation. The process uses fluorinated membranes and is particularly useful for treating mixtures containing light organic components, such as methane, propylene or n-butane.
01/20/2009
7459084Membrane-assisted fluid separation apparatus and method
This present invention relates to a fluid separation module adapted to separate a given fluid mixture into permeate and retentate portions using bundles of hollow fiber membranes. The membranes may be composed of different kinds of membranes depending on the applica...
12/02/2008
7427312Integrated degassing and debubbling apparatus
An apparatus for removing gas bubbles from a fluid includes a fluid inlet and a separation chamber that is in fluid communication with the fluid inlet. The separation chamber has first and second end portions, with the first end portion being operably oriented gravi...
09/23/2008
7422623Separation membrane by controlled annealing of polyimide polymers
This abstract discusses membranes needed to separate fluids for the production of oxygen-enriched air, nitrogen-enriched-air, for the separation of carbon dioxide from hydrocarbons, and the separation of hydrogen from various petrochemical and oil refining streams. ...
09/09/2008
7410065Membrane for the separation of material mixtures and method for production thereof
The invention relates to a membrane for the separation of material mixtures by the principle of vapor permeation or pervaporation, in particular for the dewatering of organic solvents, comprising at least one support layer and at least one material-selective separat...
08/12/2008
7392848Methods to produce sulfate-free saline water and gypsum
Methods are disclosed for the selective separation of sulfate from a saline stream such as seawater to produce nearly sulfate-free saline stream for oil-fields water injection operations. The separated sulfate in the form of gypsum from the treated saline stream can...
07/01/2008
7393383Separation membrane made from blends of polyimide with polyamide or polyimide-amide polymers
Membranes are used to separate fluids for the production of oxygen-enriched air, nitrogen-enriched-air, for the separation of carbon dioxide from hydrocarbons, and the separation of hydrogen from various petrochemical and oil refining streams. Membranes are discusse...
07/01/2008
7393388Spiral 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
7371309Purification of difluoromethane by extractive distillation
The present invention provides extractive distillation processes for removing difluoromethane (HFC-32) from a mixture comprising HFC-32 and at least one of chlorodifluoromethane (CFC-12), 1,1,1-trifluoroethane (HFC-143a), chloropentafluoroethane (CFC-115), and penta...
05/13/2008
7368056Production of potable liquids
Water-desalination and/or water purification devices. Alternatively, devices that are implantable in animal bodies, possibly configured as self-inflating spinal disc prostheses. The devices include specified types of water-absorbing solute encapsulated by non-porous...
05/06/2008
7361276Apparatus and method for osmotic membrane distillation
A method of enhancing the concentration of a first inorganic compound in a first aqueous solution of a first process of a heavy chemical plant, the method comprising (a) feeding the first solution having the first compound at a first concentration and a first water ...
04/22/2008
7353689Liquid separator for a gas analyzer and method for separating a liquid component from gas
Liquid separator for a gas analyzer and method for separating a liquid component from gas. The liquid separator comprises an input passage having an input end and an output end, an output passage having an input end and an output end, a wall formed of a gas permeabl...
04/08/2008
7347889Ultrasonic solution separator
An ultrasonic solution separator including an ultrasonic atomization chamber supplied with a solution containing a target material; an ultrasonic oscillator producing mist from the solution in the ultrasonic atomization chamber with ultrasonic oscillation; a power s...
03/25/2008
7341663Spiral-wound liquid membrane module for separation of fluids and gases
The present invention is a filtering and chemical separation device that performs the operations of solvent extraction and pervaporation in a single piece of equipment, configured as a spiral-wound membrane module, and provides for the replenishment of the solvent i...
03/11/2008
7335697Polymer composition comprising cross-linked polyethylene and methods for making the same
The invention provides a polymer composition comprising cross-linked polyethylene having a non-polar biocompatible lipid disposed in at least a portion of the free volume of the polyethylene. The invention further provides methods for making the polymer composition....
02/26/2008
7332564Polymerization catalyst for polyester, method for producing it and process for producing polyester using it
Polymerization catalysts for polyesters include: (1) metal elements selected from metal elements of Group 4A of the Periodic Table; and (2) metal elements selected from metal elements of Group 2A of the Periodic Table, aluminum, manganese, iron, cobalt, zinc, galliu...
02/19/2008
7323033Nanostructured 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
7323039Method for preparing microsphere
It is to provide an improved method for preparation of microsphere from an emulsion wherein an organic phase containing an organic solvent having a boiling point lower than that of water and a hardly-water-soluble polymer is emulsified in an aqueous phase by an in-w...
01/29/2008
7318894Method and system for treating wastewater
A method and system is disclosed for treating wastewater that utilizes membrane processes, preferably in combination with anaerobic biological treatment, to provide for economical and environmentally superior treatment without high production of biological solids. T...
01/15/2008
7318898Polymeric membrane wafer assembly and method
A method for separating aromatic hydrocarbons from a feed stream. The method includes flowing the feed stream through a first channel within a first wafer assembly that may contain an underflow distribution weir. Next, the feed stream is exposed to a first thin film...
01/15/2008
7314565Method and apparatus for separating aromatic hydrocarbons in an isothermal system
An isothermal method is provided for separating aromatic hydrocarbons from a feed stream. The method includes flowing the feed stream through a first channel within a first wafer assembly that contains a rib member. Next, the feed stream is exposed to a first thin f...
01/01/2008
7303681Dynamic membrane wafer assembly and method
A method for separating aromatic hydrocarbons from a feed stream. The method includes flowing the feed stream through a first channel within a first wafer assembly that may contain an underflow distribution weir. Next, the feed stream is exposed to a first thin film...
12/04/2007
7303605Snap together filter
A fluid filter is provided with a snap-together housing for the filter media. The housing is designed with two main parts that are easily snapped together to encapsulate the filter media. The filter housing is substantially cylindrical, and contains an inlet on one ...
12/04/2007
7302795Internal combustion engine/water source system
An internal combustion engine system for automotive vehicle wherein liquid water is produced by cooling a portion of exhaust gases at elevated pressure to induce condensation. The use of elevated pressure allows condensation to occur at a higher dew point which is e...
12/04/2007
7300662Drug/drug delivery systems for the prevention and treatment of vascular disease
A drug and drug delivery system may be utilized in the treatment of vascular disease. A local delivery system is coated with rapamycin or other suitable drug, agent or compound and delivered intraluminally for the treatment and prevention of neointimal hyperplasia f...
11/27/2007
1                      
 
Sign InRegister
Username  
Password   
forgot password?