Matches 1 - 31 out of 31
Match Document Document Title
7404896 Modified membranes  
A porous polymeric membrane formed from a blend of a polymeric membrane forming material, such as polyvinylidene fluoride or polysulfone and a polymeric reactivity modifying agent adapted to modify...
7387723 Filtration apparatus comprising a membrane bioreactor and a treatment vessel for digesting organic materials  
The invention relates to a membrane bioreactor process combined with an advanced biological sludge digestion process that provides significant improvements in sludge digestion by reducing the costs...
7300022 Modified membranes  
A porous polymeric membrane formed from a blend of a polymeric membrane forming material, such as polyvinylidene fluoride or polysulfone and a polymeric reactivity modifying agent adapted to modify...
7264716 Membrane filtration manifold system  
A membrane filtration manifold for connecting a filter submodule including one or more elongate bundles of semipermeable polymeric fibers is provided. The manifold includes a housing and connecting...
7257990 Accelerated ultralow moisture permeation measurement  
By measuring ultralow moisture permeation through a barrier material sample at a temperature substantially above ambient, definitive values are produced on an accelerated basis that can be used to...
7247238 Poly(ethylene chlorotrifluoroethylene) membranes  
Porous polymeric membranes including Halar (poly (ethylene chlorotrifluoroethylene)) and related compounds and the methods of production thereof which avoid the use of toxic solvents. Preferred...
7226541 Membrane polymer compositions  
The invention relates to a terpolymer of tetrafluoroethylene (TFE) monomer, polyvinylidene fluoride (PVDF) monomer and hexafluoropropylene (HFP) monomer for forming an ultrafiltration or...
7178384 Method and apparatus for measuring ultralow permeation  
Method and apparatus for testing ultralow moisture permeation through a sample such as a thin barrier film by exposing one surface of a sample to be tested for moisture permeation to a...
7040141 Capillary condensation method and apparatus for determining porosity characteristics of a sample  
A sample having a plurality of pores is located within a pressurizable chamber. The sample divides the chamber into a first volume and a second volume. A known amount of vapor is introduced into...
7018533 High solids module  
A method of cleaning a membrane filtration module is disclosed. The module comprises at least one or more longitudinally extending membranes located in a feed-containing vessel. The membranes have...
6974554 Potting method  
A method of forming a pot for an array of hollow fiber membranes ( 7 ) is provided, including the steps of placing the ends ( 6 ) of the fiber membranes ( 7 ) in a mould ( 5 ); forming a first...
6962258 Hollow fiber restraining system  
A restraining system for hollow fibers is provided. The restraining system includes a plurality of longitudinally extending elements spaced from one another and supported by a number of discrete...
6955762 Method of cleaning membranes  
The present invention relates a method for cleaning polymeric microfiltration membranes and membrane units, and to compositions useful in such methods. The compositions include at least one soluble...
6884350 Modified membranes  
A porous polymeric membrane formed from a blend of a polymeric membrane forming material, such as polyvinylidene fluoride or polysulfone and a polymeric reactivity modifying agent adapted to modify...
6872305 Membrane filtration system  
A method and apparatus for reducing volume of feed liquid required in a porous membrane filtration system having a number of porous membranes ( 6 ) submersed in a volume of feed liquid to be...
6821420 Apparatus and method for cleaning membrane filtration modules  
A method and apparatus for cleaning a membrane module, the membrane module having a plurality of porous membranes, the membranes being arranged in close proximity to one another and mounted to...
6804989 Method and apparatus for measuring ultralow water permeation  
Method and apparatus for testing ultralow moisture permeation through a sample such as a thin barrier film by exposing one surface of a sample to be tested for moisture permeation to a...
6783008 Hollow fibre restraining system  
A restraining system for hollow fibres is provided. The restraining system includes a plurality of longitudinally extending elements spaced from one another and supported by a number of discrete...
6335202 Method and apparatus for on-line measurement of the permeation characteristics of a permeant through dense nonporous membrane  
This invention relates to a method and apparatus for on-line measurement of permeation characteristics (transmitting chemicals) through dense nonporous membrane. This invention is intended to...
6202475 Predicting logarithmic reduction values  
A method of predicting logarithmic reduction values for a membrane filtration system having a filtrate flow portion and a bypass flow portion relative to a filtrate permeable membrane with stable...
6119506 Apparatus and method for determining transport properties of porous materials  
An apparatus and method for measuring the mass transport properties of pos materials. The apparatus is a permeation or diffusion cell that comprises two outer portions with longitudinal channels...
5616822 Calibration systems  
A calibration system includes an air system having a blower unit (10), a flow meter (16) and means (15) for controlling an airflow through a mixing manifold (17) to which a metered amount of a test...
5591898 Method for measuring material permeability characteristics  
A method for measuring the permeability of a gas through a material, wherein the steps include exposing the material to the gas to be measured and measuring the outgassing characteristics of the...
5513515 Method for measuring permeability of a material  
A method for measuring the permeability of a gas through a material, wherein the steps include exposing the material to the gas to be measured and measuring the outgassing characteristics of the...
5361625 Method and device for the measurement of barrier properties of films against gases  
The present invention is directed to a novel apparatus for measuring the transmission or permeation of gases, flavors, aromas and volatile substances through films and membranes. The instrument of...
5305630 Process and apparatus for supplying gas to a very highly sensitive analyzer  
The line of gas to be analyzed, the "zero" gas line and calibration gas line are each provided with a restriction operating in sonic rate supplying a nominal constant flow and downstream, have a...
5265463 Apparatus for measuring the transmission rate of volatile organic chemicals through a barrier material  
A system for measuring the transmission rate of volatile organic chemicals through a barrier material, where a barrier material sample is clamped in a test cell so as to form a chamber on both...
5203201 On-line web filtration efficiency test method  
An apparatus and method for measuring the filtration efficiency of a moving air-permeable web. The apparatus includes a sampling head with an upstream head and a downstream head disposed on...
5088316 Apparatus and method for testing material samples for gas diffusion characteristics  
A method and apparatus for testing the gas diffusion characteristics of material samples includes a sealed test chamber in which one or more test cells are placed. A material sample is mounted on...
5054328 Gas analyzer with diffusion filter  
A gas analyzer comprises a diffusion filter to segregate sampled gases containing liquid and particulate solid contaminants from the analyzer. A gas permeable diffusion membrane separates a flowing...
4852389 System for controlled humidity tests  
A system for controlled humidity tests wherein gas transmission through a barrier may be measured, including apparatus for controllably mixing a dry gas and wet gas, for conveying the mixed gas to...
Matches 1 - 31 out of 31