Straight pore microfilter with efficient regeneration
First Claim
1. A filter well-suited for removing particulates from a gas, the filter comprising:
- (a) a support, the support comprising a plurality of straight pores extending from one surface of the support to an opposite surface of the support; and
(b) an ionomer coating applied to the support, the ionomer coating partially filling but not completely sealing at least some of the straight pores.
1 Assignment
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Accused Products
Abstract
A gas particulate filter well-suited for, but not limited to, removing airborne particulates from air. According to one embodiment, the filter is a composite structure including a porous support and an ionomer coating. The porous support is preferably made of a material designed to endow the filter with good mechanical properties. The pores of the porous support are preferably micron or smaller straight pores. The ionomer coating, which is applied to the porous support but does not completely seal the pores of the porous support, is preferably selected to provide the filter with good filtering properties and regeneration through controlled ionomer hydration/dehydration and corresponding ionomer swelling and contraction.
11 Citations
29 Claims
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1. A filter well-suited for removing particulates from a gas, the filter comprising:
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(a) a support, the support comprising a plurality of straight pores extending from one surface of the support to an opposite surface of the support; and (b) an ionomer coating applied to the support, the ionomer coating partially filling but not completely sealing at least some of the straight pores. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of filtering particulates from a gas, the method comprising the steps of:
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(a) providing a filter, the filter comprising (i) a support, the support comprising a plurality of straight pores extending from one surface of the support to an opposite surface of the support; (ii) an ionomer coating applied to the support, the ionomer coating partially filling but not completely sealing at least some of the straight pores, and (b) passing the gas through the pores of the filter. - View Dependent Claims (25)
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26. A method of preparing a gas particulate filter, said method comprising the steps of:
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(a) forming a support having a plurality of straight pores; and (b) applying an ionomer to the support so as to partially fill, but not completely seal, at least some of the straight pores. - View Dependent Claims (27, 28, 29)
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Specification