Filtering medium, method for making same
US7278542B2 · kind B2 · utility
24Cited by
12References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2003 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | Feb 12, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/40083
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention concerns a filtering medium based on a photocatalytic agent and activated carbon, characterized in that it comprises a permeable support covered with a first layer based on activated carbon, then a separate second layer based on a photocatalytic agent, or vice versa. The invention also concerns a method for making such a filtering medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.