Osmonics, Incorporated

Other

Ge Osmonics, Inc.

Thomas M Aune

Travis G Stifter

Clinton V Kopp

Philip M Rolchigo

Michael J Madsen

H William Schnaper

Donald A Boothroyd

Joseph T Szczepanski

Henry J Schneider

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 new non-woven depth filter element is formed in a continuous process whereby a mass of very fine diameter polymer filaments overlaid by mass of larger diameter polymer filaments are continuously accumulated on a spinning mandrel and advanced along and off of the mandrel by a press roller. An inner cylindrical surface of the cumulative filament mass forming the depth filter element is calendered, which facilitates insertion of a core member.

Non-woven depth filter element

A depth filter formed of a plurality of substantially continuous intertwined filaments including a central support zone formed of support filaments having a first diameter and a filter zone formed of filtration filaments having filaments of a second diameter in which the diameters are different or the filaments are constructed of different materials. The invention also relates to an apparatus and a method for making such a depth filter element.

Depth filter cartridge and method and apparatus for making same

Human soluble immune response suppressor (SIRS) having a molecular weight of about 10,000 to 15,000, an isoelectric point of about 7 and a defined amino acid composition distinctly different from murine SIRS is produced from a culture of MOLT-4 cells.

Human soluble immune response suppressor

The disclosure relates to an in vitro diagnostic method of screening for immune deficiency in a nephrotic patient comprising administering the presence or absence of the lymphokine, soluble immune response suppressor, in a urine sample of said patient.

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Mound, MN, United States of America

Thomas M Aune