Water purifying systems
US4002566A · kind A · utility
31Cited by
9References
10Claims
0Family size
Inventor
Key dates
| Filing date | Apr 7, 1975 |
| Grant date | Jan 11, 1977 |
| Priority date | — |
| Expiry date | Apr 7, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A system for purifying water includes flowing the water through a closed path, supporting a bacteria culture in the path of water disposed transversely thereto, and aerating the water in the path upstream of the bacteria culture to enable it to purify the water. In one form of the invention, the water being purified may be flowing through an aquarium for containing fish and/or other aquatic life. In another form of the invention, the water being purified may be flowing through a fish pond or swimming pool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.