Microporous filter membrane, method of making microporous filter membrane and separator employing microporous filter membranes
US7442303B2 · kind B2 · utility
35Cited by
62References
23Claims
0Family size
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Inventor
Key dates
| Filing date | Aug 2, 2005 |
| Grant date | Oct 28, 2008 |
| Priority date | — |
| Expiry date | Nov 3, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249953
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter membrane, methods of making such filter membrane and apparatus employing such filter membrane are disclosed, in which the filter membrane is a monolithic polymeric membrane that includes a polymeric filter layer including a micron-scale precision-shaped pores and a polymeric support layer that has a precision-shaped porous support structure for the filter layer. Several methods are disclosed for making such a membrane using micromachining techniques, including lithographic, laser ablation and x-ray treatment techniques. Several filter apparatus employing such a membrane are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.