Denitrification of aquarium water
Patent 7244358 Issued on July 17, 2007. Estimated Expiration Date: 
April 24, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 24, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesExternal biological aquarium filter Biodegradable sheet for culturing sewage denitrifiers Patent #: 5316832 InventorAssigneeApplicationNo. 10475482 filed on 04/24/2002US Classes:210/610, Including adding ancillary growth medium for microorganism210/615, Utilizing contact surfaces supporting microorganism (e.g., trickling filter, etc.)210/617, In bed form210/616, Particulate media210/620, Aerobic treatment210/169, Aquarium or swimming pool442/401Spun-bonded nonwoven fabricExaminersPrimary: Barry, Chester T.Attorney, Agent or FirmForeign Patent References
International ClassC02F 3/00AbstractThe invention relates to agents for the removal or reduction of inorganic nitrogen compounds, especially nitrate, from biological aquarium waters, containing a biologically degradable polymer, preferably polycaprolactone (PCL) and to the utilization of said agents.Other References
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