Biological filtration plants
US4699829A · kind A · utility
15Cited by
12References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 24, 1986 |
| Grant date | Oct 13, 1987 |
| Priority date | — |
| Expiry date | Apr 24, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA41G1/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Ornamental artificial foliage for placement within an aquarium. The foliage formed of a material which is not harmful to the aquatic life within the aquarium. The ornamental foliage has a rough, granular surface texture over and above that normally required for the aesthetic appearance of the foliage. The rough, granular surface provides an increase in the surface area presented by the unmodified foliage to support increased growth and propagation of organisms which are active in causing biological filtration, thereby providing an effective source of biological filtration within the aquarium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.