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US 10,589,198 B2Granted
High flow, low hold up filters
OwnerPeter Florezinventor
Life of this patent
Estimating the term…
Abstract
Filter devices with a flow director surrounded by a filter element providing a large filter surface area and low fluid volumes for efficient filtration and high recovery of sample fluids. The filter device can be configured with dimensions and sealing surfaces to functionally interact as a pre-filter for common usage disposable filter flasks.
Claims38
A filter device comprising:
- a filter element surrounding a central axis and comprising a top end, a bottom end, an external filter surface, an internal filter surface, and an internal space between the central axis and internal surface;
- a flow director impermeable to liquids, comprising a top end and bottom end, and positioned within the internal space occupying a larger proportion of a cross-section of the internal space perpendicular to the central axis toward the bottom end of the filter than the flow director occupies toward the top end of the filter;
- wherein the filter device is configured so that a sample liquid applied to the flow director top end wets the filter top end.
A filter device comprising:
- a first cylindrical or conical filter element mounted within a cylindrical or conical housing and the filter element a central axis, a top end, a bottom end, an outer surface, an inner surface, and an inner space having a volume between the central axis and filter inner surface;
- wherein the housing comprises:
- a cylindrical or conical body comprising a top, bottom, and sides;
- a housing top end comprising a shoulder flange extending radially from a central opening;
- wherein the flange extends from the central opening across the filter top end, and extends radially in a plane beyond the body;
- and,
- a housing bottom end extending across the cylindrical body bottom covering the bottom of the inner space.
4 more elements
Dependencies are inferred from the claim text.