Gas-permeable membrane
US7329452B2 · kind B2 · utility
12Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2003 |
| Grant date | Feb 12, 2008 |
| Priority date | — |
| Expiry date | Jul 4, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24331
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Gas-permeable membranes comprising a microporous film and a coating on the microporous film, the coating being obtained by coating the microporous film with a liquid coating composition comprising a polymer and hollow polymeric particles dispersed in the composition, and then solidifying the coating. The gas-permeable membrane has a reduced ratio of carbon dioxide permeability to oxygen permeability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.