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| Number | Title | Issue Date |
| 8153165 | Preparation and use for reducing the damaging effect of ammonia on organisms living in water The invention describes novel preparations and their use for reducing the acute damaging effect of ammonia in organisms living in the keeping water of aquariums, garden ponds, or aquaculture systems. The preparations consist of adducts of sodium hydrogen sulfite at ... | 04/10/2012 |
| D566552 | Cover with closing arrangement | 04/15/2008 |
| 7244358 | Denitrification of aquarium water The 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. | 07/17/2007 |
