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US 4,727,705 AGranted
Package for membrane filters
AssigneeMillipore Corporation
InventorJoseph G. Zahka
Life of this patent
Estimating the term…
Abstract
A hydrophobic membrane filter device is packaged in a moisture and bacteria impervious container with the pores of the membrane filter being filled with water. The package is then sterilized to kill any living organisms contained therein. Thereafter, a sufficient concentration of water is retained in the membrane pores thereby rendering the hydrophobic membrane filter device directly permeable to an aqueous fluid.
Claims7
A method of packaging a hydrophobic membrane filter comprising the steps of:
- inserting said membrane filter into a moisture and bacteria impervious container, the pores of said membrane filter containing water and being substantially free of any other substance;
- sealing said container after said filter is inserted therein to form a fluid and bacteria tight sealed package;
- and
- sterilizing said sealed package such that after said sterilizing step water is retained within said pores.
1 more element
Dependencies are inferred from the claim text.