Memtec LLC

Baxter Travenol Laboratories, Inc.

Usf Filtration & Separations Group Inc.

Memtec America Corporation

Osmonics, Incorporated

Baxter International Inc.

Siemens Industry, Inc.

Ge Osmonics, Inc.

U.S. Filter Wastewater Group, Inc.

Crc for Waste Management and Pollution Control, Limited

Memtel Limited

Dual Vortex Microfiltration, LLC

Usf Filtration and Seperations Group, Inc.

Douglas L. Ford

Clinton V. Kopp

Clinton V Kopp

Nathaniel R Quick

Douglas L Ford

Michael Liberman

Alexander Sobolevsky

Thomas William Beck

Fufang Zha

Warren Thomas Johnson

Robert James McMahon

Robert J Schmitt

Steven D Barboza

Anthony C Shucosky

Eric W Anderson

James R Hitchcock

Philip M Rolchigo

Charles S Hoffman

Bruce G Biltoft

Michael C Murray

Thomas M Aune

Robert J Streeton

Travis G Stifter

Paul S Khoo

Michael J Madsen

Victor White

Dennis Roberts

James A Fitzgerald

Freddie L Washington

Warren Johnson

Robert J W Streeton

Guanghua Yu

Harry W Cromie

Rao Chilamkurti

Steve Pearson

Dilip H Shah

Jalel Michel Darzi

Robert John Streeton

Ian Dracup Doig

Aloke Vaid

Chang-Wie Jen

Humphrey Drummond

Charles Hoffman, Jr

Neil Wende

Brett Alexander

Mark Thompson

Marcus J Fabig

Gary Stollery

Tomasz Markiewicz

Kerrie Wyatt

Antony MacCormick

Anthony Day

Jeremy C Wright

Martin Miller

Thomas E Needham

A method and apparatus for removing fouling materials from the surface of a plurality of porous membranes () arranged in a membrane module () by providing, from within the module, by means () other than gas passing through the pores of said membranes, gas bubbles in a uniform distribution relative to the porous membrane array such that the bubbles move past the surfaces of the membranes () to dislodge fouling materials therefrom. The membranes () are arranged in close proximity to one another and mounted to prevent excessive movement therebetween. The bubbles also produce vibration and rubbing together of the membranes to further assist removal of fouling materials.

Scouring method

A filter system and method of filtering a feed liquid utilizing a combined plurality of filter assemblies. Each filter assembly includes a filter housing, a filter cartridge and a spiral passageway for imparting secondary flow currents, particularly Dean-Flow currents, to fluid flowing within the spiral passageways to prevent particulate build-up on filter surfaces so as to extend filter life and duration between replacement. The filter system can be operated within positive or negative pressure filtration processes. A dual-stage filtration process utilizing a cap filter and a cylindrical depth filter is also disclosed.

System and method of fluid filtration utilizing cross-flow currents

A non-woven melt-blown filament medium includes a mass of essentially continuous melt-blown polymer filaments and an essentially continuous traversing melt-blown polymer filament extending through the mass. The mass has a depth dimension, a longitudinal dimension, and a latitudinal dimension. The mass includes a plurality of layers, each of the plurality of layers being generally oriented in the longitudinal and latitudinal dimensions. The traversing filament is generally oriented in the depth dimension and extends through at least one layer of the mass. In one embodiment, the mass is cylindrical in shape and the layers comprise concentric zones. The traversing filament is intentionally deposited and positioned to improve the physical properties of the mass.

Three-dimensional non-woven media

A non-woven depth filter cartridge includes a cylindrical mass of essentially continuous melt-blown polymer filaments and an essentially continuous traversing melt-blown polymer filament extending through the mass. The mass has a depth dimension, a longitudinal dimension, and a circumferential dimension. The mass includes a plurality of layers, each of the plurality of layers being generally oriented in the longitudinal and circumferential dimensions. The traversing filament is generally oriented in the depth dimension and extends through one or more layers of the mass. In one embodiment, the layers of the mass comprise concentric zones. The traversing filament is intentionally deposited and positioned to improve the physical properties of the filter cartridge.

Three-dimensional non-woven filter

A method of continuously producing a melt-blown polymer filament mass includes producing a first set of melt-blown polymeric filaments, collecting the first set of filaments on a rotating collection device to form a tubular filament mass having a plurality of layers, and applying a second set of melt-blown polymeric filaments to the filament mass. The first set is produced generally in-line along an axis generally parallel to the collection device. The second set is deposited on the filament mass such that filaments of the second set extend through and engage a plurality of layers of the filaments of the first set. The method further includes urging the filament mass along the collection device to create a tubular filament mass of indefinite length with a first major surface and a second major surface. In one embodiment, the second set are applied in a sweeping motion.

Process for making three-dimensional non-woven media

A method and apparatus for removing fouling materials from the surface of a plurality of porous membranes ( ) arranged in a membrane module ( ) by providing, from within the module, by means ( ) other than gas passing through the pores of said membranes, gas bubbles in a uniform distribution relative to the porous membrane array such that the bubbles move past the surfaces of the membranes ( ) to dislodge fouling materials therefrom. The membranes ( ) are arranged in close proximity to one another and mounted to prevent excessive movement therebetween. The bubbles also produce vibration and rubbing together of the membranes to further assist removal of fouling materials.

An apparatus and process for making a capacitor comprising a first capacitor plate element covered with a spacing material selected for forming a capacitor dielectric. The first capacitor plate element and the spacing material is encased with a second capacitor element. The second capacitor plate element is drawn for reducing the outer diameter thereof. A multiplicity of the capacitor elements are inserted within a second capacitor plate connector. The second capacitor plate connector is drawn for reducing the outer diameter of the metallic tube and for electrically interconnecting the multiplicity of the second capacitor plate elements with the second capacitor plate connector to form a second capacitor plate. The multiplicity of the first capacitor elements are interconnected with a first capacitor plate connector to form a first capacitor plate. The spacing material is replaced with a dielectric material to form the capacitor thereby.

Capacitor

An apparatus and process for making a capacitor having a first capacitor plate element covered with a spacing material selected for forming a capacitor dielectric. The first capacitor plate element and the spacing material is encased with a second capacitor element. The second capacitor plate element is drawn for reducing the outer diameter thereof. A multiplicity of the capacitor elements are inserted within a second capacitor plate connector. The second capacitor plate connector is drawn for reducing the outer diameter of the metallic tube and for electrically interconnecting the multiplicity of the second capacitor plate elements with the second capacitor plate connector to form a second capacitor plate. The multiplicity of the first capacitor elements are interconnected with a first capacitor plate connector to form a first capacitor plate. The spacing material is replaced with a dielectric material to form the capacitor thereby.

An apparatus and process is disclosed for making a capacitor having the steps of covering a first capacitor plate element with a dielectric material. The process includes encasing the first capacitor plate element and the dielectric material with a second capacitor element. The second capacitor plate element is drawn for reducing the outer diameter thereof and for forming a capacitor element. A multiplicity of the capacitor elements are encased within a second capacitor plate connector. The second capacitor plate connector is drawn for reducing the outer diameter of the metallic tube and for electrically interconnecting the multiplicity of the second capacitor plate elements with the second capacitor plate connector to form a second capacitor plate. The multiplicity of the first capacitor elements are interconnected with a first capacitor plate connector to form a first capacitor plate.

A method and apparatus for removing fouling materials from the surface of a plurality of porous membranes (9) arranged in a membrane module (4) by providing, from within the module, by means (10) other than gas passing through the pores of said membranes, gas bubbles in a uniform distribution relative to the porous membrane array such that the bubbles move past the surfaces of the membranes (9) to dislodge fouling materials therefrom. The membranes (9) are arranged in close proximity to one another and mounted to prevent excessive movement therebetween. The bubbles also produce vibration and rubbing together of the membranes to further assist removal of fouling materials.

Gas-scrubbed hollow fiber membrane module

An apparatus and process for making a capacitor comprising the steps of covering a first capacitor plate element with a dielectric material. The process includes encasing the first capacitor plate element and the dielectric material with a second capacitor element. The second capacitor plate element is drawn for reducing the outer diameter thereof and for forming a capacitor element. A multiplicity of the capacitor elements are encased within a second capacitor plate connector. The second capacitor plate connector is drawn for reducing the outer diameter of the metallic tube and for electrically interconnecting the multiplicity of the second capacitor plate elements with the second capacitor plate connector to form a second capacitor plate. The multiplicity of the first capacitor elements are interconnected with a first capacitor plate connector to form a first capacitor plate.

Method of making a capacitor

Capacitor and method of making

A process and apparaus for recovery water from raw sewage extracted directly from the sewer including a screen(2) operable to obtain from raw sewage a screened effluent having a maximum particle size of no more than 900 microns. The apparatus also comprises a first membrane separator(5) which is operable to filter the suspended solids from some or all of the screened effluent. The process also includes a second membrane separator preferably in the form of reverse osmosis filter(8).

Method and apparatus for recovering water from a sewer main

Filtration medium is formed of a mass of nonwoven melt blown support and filtration fibers which are integrally co-located with one another. The support fibers have, on average, relatively larger diameters as compared to the filtration fibers which are integrally co-located therewith. Preferably, the filtration medium is disposed within at least one annular zone of a filtration element, for example, a disposable cylindrical filter cartridge having an axially elongate central hollow passageway which is surrounded by the filtration media. A depth filter cartridge in accordance with the present invention may thus be formed having one or more additional filtration zones (which additional filtration zones may or may not respectively be provided with integrally co-located support fibers) in annular relationship to one another. As a result of the melt blown, nonwoven fiber structure in accordance with the present invention whereby at least one filtration zone is comprised of relatively larger diameter support fibers integrally co-located with relatively smaller diameter filtration fibers, a filter cartridge having a wide range of 'engineered' physical properties (e.g., in terms of filtration, pressure drop tolerance and the like) can be provided.

Method of making filtration media having integrally co-located support

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Castle Hill, Australia

Clinton V Kopp