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Class 210/653 - Utilizing specified membrane material


Subclass of Class 210 - Liquid purification or separation
Definition: Process reciting named membrane material.
No. of patents: 205
Last issue date: 01/17/2012


1            
NumberTitleIssue Date
8097163Purification of oil field production water for beneficial use
A method and system for purifying production water obtained from oil and gas operations so that the purified water need not be disposed of by forced injection back into the geological formation but can be put to a beneficial use such as agriculture, irrigation, indu...
01/17/2012
7785471Chromatographic membrane separation
This invention relates to a polymer membrane assembly for selective separation of permeate compositions by carbon weight. This invention also relates to a process for utilizing these polymer membrane assemblies in separation processes for selective carbon weight sep...
08/31/2010
7749387Integrally-layered polymeric membranes and method of use
This invention relates to the composition of an integrally-layered polymeric membrane and a process for utilizing the integrally-layered polymeric membrane components of a feedstream. More particularly, but not by way of limitation, this invention relates to the com...
07/06/2010
7427358Process for the recovery of tyrosol and hydroxytyrosol from oil mill wastewaters and catalytic oxidation method in order to convert tyrosol in hydroxytyrosol
A for preparing Tyrosol and/or Hydroxytyrosol from oil mill wastewaters. includes: a) Microfiltration (MF), Ultrafiltration (UF). Nanofiltration (NF) and Reverse Osmosis (RO) of the OMW; b) Separatio...
09/23/2008
7332088Method of water purification
The invention provides a method for the removal of biological species, such as Cryptosporidium, from water using aluminium based media which contains surface Al—OH groups. ...
02/19/2008
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
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
7303683Microorganism-removing filter medium having high isoelectric material and low melt index binder
A filter medium capable of removing microorganisms from a fluid such as water. The filter medium includes particles of activated carbon, particles of a substantially insoluble inorganic material having an isoelectric point greater than the fluid being filtered. A lo...
12/04/2007
7267761Method of reducing sulfur in hydrocarbon feedstock using a membrane separation zone
A membrane is used in combination with fractionation and hydrodesulfurization to reduce the sulfur content of hydrocarbon feeds, preferably sulfur-containing naphtha feeds. A membrane separation zone is employed to treat a fraction of effluent from a fractionation z...
09/11/2007
7262281Method of depositing S-layer proteins on a carrier to immobilize functional molecules
On a carrier surface, a layer of S-layer proteins is produced as a carrier of functional molecules. A solution containing S-layer proteins in the form of monomers or oligomers is brought into contact with the carrier surface. Electrochemical conditions are produced ...
08/28/2007
7253130Method for making transparent continuous zeolite film and structure of the zeolite film
A method for making transparent continuous zeolite film is provided. First a transparent precursor sol is prepared, and the precursor sol is processed to a specific concentration. The precursor solution is coated on a surface of a substrate which is heated under an ...
08/07/2007
7214301Filter 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
7179500Sub-micron electrolyte thin film on nano-porous substrate by oxidation of metal film
A fluid impermeable thin film is fabricated on a porous substrate by depositing a material having a certain spatial oxidation expansion. After deposition, the material is oxidized whereby the deposited material expands and forms a void free film on top of the porous...
02/20/2007
7160464Methods for removal, purification, and concentration of viruses and methods of therapy based thereupon
The invention is based on the discovery that certain membranes, which include side chains or molecular “brushes” having, for example, tertiary amino functional groups, can be used as highly effective filters to capture viruses/virus particles from liquids withou...
01/09/2007
7144511Two stage nanofiltration seawater desalination system
The present invention is directed to a method and apparatus for desalinating seawater utilizing a two stage seawater desalination system, a first stage including at least one high performance nanofiltration membrane to receive seawater feed pressurized by a first st...
12/05/2006
7138058Acid stable membranes for nanofiltration
Semi-permeable membranes are described that allow for the efficient processing of many liquid based feed solutions, particularly those that contain acids. The membranes of this invention are able to process such feeds with high permeate rates while maintaining excel...
11/21/2006
7122122Molecular imprinting of solute on cellulose/silica composite, and products and uses thereof
A cellulose/silica composite useful as a filter material is highly selective towards a solute that has been molecularly imprinted upon an inorganic gel coating formed on the cellulose. The filter material provides dual filtering functionality, as both a selective mo...
10/17/2006
7074256Phosphazene membranes for gas separations
A polyphosphazene having a glass transition temperature (“Tg”) of approximately −20° C. or less. The polyphosphazene has at least one pendant group attached to a backbone of the polyphosphazene, wherein the pendant group has no halogen atoms. In ad...
07/11/2006
7048846Membrane separation for sulfur reduction
A membrane process for the removal of sulfur species from a naphtha feed, in particular, a FCC light cat naphtha, without a substantial loss of olefin yield is disclosed. The process involves contacting a naphtha feed stream with a membrane having sufficient flux an...
05/23/2006
7041212Membrane separation for sulfur reduction
A membrane process for the removal of sulfur species from a naphtha feed, in particular, a FCC light cat naphtha, without a substantial loss of olefin yield is disclosed. The process involves contacting a naphtha feed stream with a membrane having sufficient flux an...
05/09/2006
7018527Membrane separation for sulfur reduction
A membrane process for the removal of sulfur species from a naphtha feed, in particular, a FCC light cat naphtha, without a substantial loss of olefin yield is disclosed. The process involves contacting a naphtha feed stream with a membrane having sufficient flux an...
03/28/2006
7018539Treatment of shipboard-generated oily wastewaters
A process and apparatus for treating oily wastewater, such as bilge water or ballast water, generated on a ship. The process uses a combination of a centrifugal separation step and a membrane separation step, such as an ultrafiltration step. The membrane separation ...
03/28/2006
7018707Porous ceramic laminate and production thereof
A porous ceramic laminate has a porous silicon nitride substrate and a porous silicon nitride separation film supported thereon and having minute pores of sizes capable of Knudsen separation or molecular sieve by sintering a porous silicon nitride substrate supporti...
03/28/2006
6974544Membrane filtration
A method for membrane filtration of effluent water containing suspended matter reduces membrane clogging and improves filtration capacity of the membrane. The method includes adding a dose of a preselected coagulation reactant to the effluent before the effluent pas...
12/13/2005
6972093Onboard fuel separation apparatus for an automobile
An onboard fuel separation apparatus separates a material fuel (gasoline) into a high-octane fuel having a higher octane value than the material fuel and a low-octane fuel having a lower octane value than the material fuel using a separation membrane which selective...
12/06/2005
6953493Method for preparing DDR type zeolite membrane, DDR type zeolite membrane, and composite DDR type zeolite membrane, and method for preparation thereof
This invention provides a DDR type zeolite membrane, characterized in that it is formed as a membrane on a substrate and its main component is silica, and that each single gas permeance at room temperature and 100° C. are different, respectively among at least two ...
10/11/2005
6939392System and method for thermal management
A system for the management of thermal transfer in a gas turbine engine includes a heat generating sub-system in operable communication with the engine, a fuel source to supply a fuel, a fuel stabilization unit to receive the fuel from the fuel source and to provide...
09/06/2005
6936173Carbohydrate purification using ultrafiltration, reverse osmosis and nanofiltration
The invention provides methods for purifying carbohydrates, including oligosaccharides, nucleotide sugars, and related compounds, by use of ultrafiltration, nanofiltration and/or reverse osmosis. The carbohydrates are purified away from undesired contaminants such a...
08/30/2005
6872316Recovery of xylose
The invention relates to a process of producing a xylose solution from a biomass hydrolysate by subjecting the biomass hydrolysate to nanofiltration and recovering as the nanofiltration permeate a solution enriched in xylose. The biomass hydrolysate used as starting...
03/29/2005
6869536Lubricant, magnetic disk and magnetic disk apparatus
A lubricant which does not splash easily and has an improved property of slidableness, and a magnetic disk using the lubricant are provided. A magnetic disk apparatus featuring a prolonged service life of a stable operation and an excellent record reproduction prope...
03/22/2005
6861001Methods for removal, purification, and concentration of viruses, and methods of therapy based thereupon
The invention is based on the discovery that certain membranes, which include side chains or molecular “brushes” having, for example, tertiary amino functional groups, can be used as highly effective filters to capture viruses/virus particles from liquids withou...
03/01/2005
6857162Cleaning and/or treatment device
The present invention relates to a cleaning and/or treatment device for cleaning and/or treating surfaces such as floors, pavements and carpets. The invention particularly relates to a cleaning and/or treatment device using cleaning/treatment solution, wherein the s...
02/22/2005
6852223Asymmetric porous polytetrafluoroethylene membrane and process for preparing the same
The present invention relates to an asymmetric porous polytetrafluoroethylene membrane comprising a dense skin layer and a continuously foamed porous layer, (1) the dense skin layer having a surface roughness Ra of 20 to 165 nm; (2) the dense skin layer having a con...
02/08/2005
6821430Method of treating reverse osmosis membrane element, and reverse osmosis membrane module
In the treatment, a reverse osmosis membrane element having a polyamide skin layer is loaded in a pressure vessel in a membrane separator and contacted with a bromide-containing aqueous solution of free chlorine. The thus treated reverse osmosis membrane element ret...
11/23/2004
6818333Thin zeolite membrane, its preparation and its use in separation
Described is a supported zeolite membrane that consists of a zeolite/substrate composite layer that exhibits, in the n-butane/isobutane separation, a permeance of n-butane of at least 6.10−7 mol/m2.s.Pa and a selectivity of at least 250 at th...
11/16/2004
6797172Degumming of edible oils by ultrafiltration
A process for refining and degumming edible oils by ultrafiltration which produces a permeate fraction with reduced phosphatide content and retentate with increased phosphatide content, and wherein the ultrafiltration membrane is composed of a polymerical polymer of...
09/28/2004
6783682Salt water desalination process using ion selective membranes
The invention is directed to an improved desalination process to produce potable water. The process represents an improvement of hybrid of membrane and desalination technologies. The improvement of the invention comprises the operation of an ion selective membrane a...
08/31/2004
6770202Porous membrane
The present invention provides integral porous membranes comprising an amorphous halopolymer, as well as processes for preparing the membranes, and devices comprising the membranes. An example of an amorphous halopolymer is a copolymer of tetrafluoroethylene and per...
08/03/2004
6723247Method for processing a color reversal photographic film
The invention relates to a low-water-consumption method for processing an exposed color reversal photographic film. This method comprises the circulation of this exposed film in: i) a black and white development bath, ii) a first washing bath, i...
04/20/2004
6723422Composite reverse osmosis membrane and process for preparing the same
A composite reverse osmosis membrane is described, which includes a polyamide skin layer on a porous support, with a contact angle between the polyamide skin layer surface and water of 45° or less. The composite reverse osmosis membrane has a high salt rejection an...
04/20/2004
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