Methods of making a porous device
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United States of America Patent
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Feb 25, 1997
Issued Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Oct 18, 1991
priority date (Note) -
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Abstract
The present invention is directed to methods of making a porous device utilizing at least one removable open-cell porous mold form comprising particles formed and shaped into a solidified mass of continuously interconnected particles defining continuously interconnected pores and connecting interstices. The primary mold form is made from a selected material comprising particles having predetermined sizes and shapes which is capable of forming a stable mold form under selected conditions and of being removed under selected conditions. The primary mold form can be used to mold a porous device directly or to mold a secondary mold form. Similarly, the secondary mold form can be used to mold a porous device directly or to mold a tertiary mold form. Depending on the number of mold forms used, the porous device contains pores and pore interconnections corresponding to either the continuously interconnected particles, or to the continuously interconnected pores.
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