Hollow fiber membrane having hexagonal voids
US-2015246325-A1 · Sep 3, 2015 · US
Charged porous polymeric membrane with high void volume
US9302228B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9302228-B2 |
| Application number | US-201414193843-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 28, 2014 |
| Priority date | Feb 28, 2014 |
| Publication date | Apr 5, 2016 |
| Grant date | Apr 5, 2016 |
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Abstract
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Membranes comprising a single layer having a first microporous surface; a second microporous surface; and, a porous bulk between the first microporous surface and the second microporous surface, wherein the bulk comprises a first set of pores having outer rims, prepared by removing introduced dissolvable silica nanoparticles, the first set of pores having a first controlled pore size, and a second set of pores connecting the outer rims of the first set of pores, the second set of pores having a second controlled pore size, and a polymer matrix supporting the first set of pores, wherein the first controlled pore size is greater than the second controlled pore size, and wherein the first and/or second microporous surface comprises a neutrally charged, a negatively charged, or a positively charged, surface; filters including the membranes, and methods of making and using the membranes, are disclosed.
First claim
Opening claim text (preview).
The invention claimed is: 1. A microporous membrane comprising a single layer having (a) a first microporous surface; (b) a second microporous surface; (c) a first zone comprising a first porous bulk and the first microporous surface, and a second zone comprising a second porous bulk and the second microporous surface, wherein the first porous bulk comprises a first set of pores having outer rims, prepared by removing introduced dissolvable silica nanoparticles, the first set…
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Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
- B01D69/06Primary
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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Frequently asked questions
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- What does patent US9302228B2 cover?
- Membranes comprising a single layer having a first microporous surface; a second microporous surface; and, a porous bulk between the first microporous surface and the second microporous surface, wherein the bulk comprises a first set of pores having outer rims, prepared by removing introduced dissolvable silica nanoparticles, the first set of pores having a first controlled pore size, and a sec…
- Who is the assignee on this patent?
- Pall Corp
- What technology area does this patent fall under?
- Primary CPC classification B01D69/06. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Apr 05 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 7 related publications on this page (citations in our corpus or others sharing the same primary CPC).