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US 5,851,390 AGranted
Elliptical filtration unit
AssigneeMillipore Corporation
InventorJean Lemonnier
Life of this patent
Estimating the term…
Abstract
A filtration unit containing a filtering membrane, a cover upstream of the membrane, and a base downstream of the membrane, and joined together, characterized in that the filtering membrane has an elliptical shape. This elliptical shape facilitates the use for filtration and allows the unit to be reused without the formation of an air lock when the filtering membrane is partially hydrophobic.
Claims4
A filtration unit which comprises:
- a filtration membrane having pores which permit filtration of a fluid through said membrane,
- said membrane being free of holes other than said pores, and having a shape of a solid ellipse,
- said membrane being hydrophilic and having a small hydrophobic area positioned at each end portion of the major axis of the ellipse,
- a cover having a fluid inlet said cover having a shape of an ellipse,
- a base having a fluid outlet, said base having a shape of an ellipse,
- said cover and said base being joined together with said filtration membrane positioned between said cover and said base to form a seat about the entire periphery of said membrane.
3 more elements
Dependencies are inferred from the claim text.