Filter cartridge for gravity-fed water treatment devices
US6290848A · kind A · utility
65Cited by
25References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1997 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Apr 16, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2201/006
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A filter cartridge for a gravity-fed water treatment device having a porous particulate filter disposed therein. The porous particulate filter has an open upper end, a closed lower end, and sidewalls therebetween. Water is treated as it flows through the sidewalls of the filter. The cartridge also contains granular media disposed within the porous particulate filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.