Liquid purification or separation – Structural installation – Closed circulating system
Reexamination Certificate
2006-12-14
2009-08-25
Prince, Fred (Department: 1797)
Liquid purification or separation
Structural installation
Closed circulating system
C210S167220, C210S167260, C210S602000, C119S260000, C119S261000, C250S437000
Reexamination Certificate
active
07578933
ABSTRACT:
This invention provides a filtration system for home aquaria that uses a closed-circuit pathway having a surface that contacts a flow of water moving between a tank inlet and tank outlet. The surface allows for algal growth thereon, and for transmission of light thereonto so as to provide photosynthetic energy to the algae. The algae acts to scrub contaminants (nitrogenous compounds, for example) as part of its growth cycle, and thereby purify the water. Additional components, such as injected air and filter media can also be provided to the water circuit to enhance algal growth, oxygenate the water and remove particulates. In an illustrative embodiment, the surface is transparent or translucent and a light that transmits appropriate wavelengths (for example, full-visible spectrum) is placed in proximity to the surface.
REFERENCES:
patent: 2867945 (1959-01-01), Gottaas et al.
patent: RE24822 (1960-05-01), Pallotta et al.
patent: 4351721 (1982-09-01), Frandsen
patent: 4690128 (1987-09-01), Gibbons
patent: 4737278 (1988-04-01), Miller
patent: 4769131 (1988-09-01), Noll et al.
patent: 4995980 (1991-02-01), Jaubert
patent: 5326475 (1994-07-01), Kent
patent: 5536398 (1996-07-01), Reinke
patent: 5647983 (1997-07-01), Limcaco
patent: 5675153 (1997-10-01), Snowball
patent: 5755961 (1998-05-01), Limcaco
patent: 5779885 (1998-07-01), Hickok et al.
patent: 5799612 (1998-09-01), Page
patent: 5863426 (1999-01-01), Yen
patent: 5868926 (1999-02-01), Hickok et al.
patent: 6454952 (2002-09-01), Thorpe
patent: 6547963 (2003-04-01), Tsai
patent: 6730226 (2004-05-01), Takada
patent: 6837991 (2005-01-01), Norris
patent: 6932903 (2005-08-01), Chang
patent: 05-030879 (1993-02-01), None
Adey, Walter et al, “Dynamic Aquaria-Building Living Ecosystems”, 1998, pp. 31, 163-170, Publisher: Academic Press, Published in: Washington, DC.
Johnson et al, “Fancy Goldfish”, “A Complete Guide to Care and Collecting”, 2004, p. 87, Publisher: Weatherhill, Published in: New York.
Loginov William A.
Loginov & Associates PLLC
Prince Fred
Selman Benjamin B.
LandOfFree
Biological filter for aquatic ecosystems does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Biological filter for aquatic ecosystems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Biological filter for aquatic ecosystems will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4138993