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A forehead support apparatus for resting a standing users forehead against a wall above a bathroom commode or urinal or beneath a showerhead.
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| Number | Title | Issue Date |
| 5827490 | Method for converting urea to ammonia A method for reducing NOx in a combustion exhaust gas stream from a boiler. The method includes the steps of converting an aqueous solution of urea to ammonia by heating the urea solution to a temperature of 350°-650° F. The urea solution is ... | 10/27/1998 |
| 5281403 | Method for converting urea to ammonia A method is provided for reducing NOx in a combustion exhaust gas stream from a boiler. The method includes the steps of converting an aqueous solution of urea to ammonia by heating the urea solution to a temperature of 350°-650° F. in an injection lanc... | 01/25/1994 |
| 5252298 | Device for cleaning gases Techniques and associated systems are provided for removing oxides of nitrogen (NO and NO2, hereinafter called NOx) from combustion effluent gases. Such a system includes a nozzle and means for introducing a carrier gas and an inject... | 10/12/1993 |
| 5240689 | Process using two-stage boiler injection for reduction of nitrogen This invention relates to methods and apparatus for reducing NOx in combustion effluent gases which comprise a two-stage injection process. NHi precursors (such as liquid-phase urea or ammonium hydroxide, or the like) are injected into the flue gas at tem... | 08/31/1993 |
