Water purifier
US5071551A · kind A · utility
27Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1989 |
| Grant date | Dec 10, 1991 |
| Priority date | — |
| Expiry date | Sep 18, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/185
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A water purifier comprising a primary filter for removing residual chlorine and other impurities, a secondary filter disposed downstream of the primary filter for removing microorganisms and antimicrobial means disposed between the primary filter and the secondary filter. The water purifier of the invention can be used for long time since the proliferation of microorganism, which causes clogging of the secondary filter, is effectively prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.