Method of making microporous filter membrane
US7784619B2 · kind B2 · utility
41Cited by
62References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 16, 2008 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Sep 16, 2028 |
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.