3900554
Method of hydrolyzing urea contained in waste water streams
Patent #: 4087513
Issued on: 05/02/1978
Inventor: Schell
Process for abating concentration of nitrogen oxides in combustion flue gas
Patent #: 4119702
Issued on: 10/10/1978
Inventor: Azuhata , et al.
Catalytic method for hydrolyzing urea
Patent #: 4168299
Issued on: 09/18/1979
Inventor: Schell
Urea reduction of NOx in combustion effluents
Patent #: 4208386
Issued on: 06/17/1980
Inventor: Arand , et al.
Urea reduction of NOx in fuel rich combustion effluents
Patent #: 4325924
Issued on: 04/20/1982
Inventor: Arand , et al.
Reduction of nitrogen-based pollutants through the use of urea solutions containing oxygenated hydrocarbon solvents
Patent #: 4719092
Issued on: 01/12/1988
Inventor: Bowers
Method and composition for utilizing lime-urea hydrates to simultaneously reduce NOx and SOx in combustion effluents
Patent #: 4731233
Issued on: 03/15/1988
Inventor: Thompson , et al.
Reduction of nitrogen- and carbon-based pollutants
Patent #: 4751065
Issued on: 06/14/1988
Inventor: Bowers
Reduction of NOx in flue gas
Patent #: 4756890
Issued on: 07/12/1988
Inventor: Tang , et al.
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Process for the reduction of nitrogen oxides in an effluent
Patent #: 4770863
Issued on: 09/13/1988
Inventor: Epperly , et al.
Multi-stage process for reducing the concentration of pollutants in an effluent
Patent #: 4777024
Issued on: 10/11/1988
Inventor: Epperly , et al.
Process for nitrogen oxides reduction and minimization of the production of other pollutants
Patent #: 4780289
Issued on: 10/25/1988
Inventor: Epperly , et al.
Process for the reduction of nitrogen oxides in an effluent using a hydroxy amino hydrocarbon
Patent #: 4803059
Issued on: 02/07/1989
Inventor: Sullivan , et al.
Process for reducing the concentration of pollutants in an effluent
Patent #: 4842834
Issued on: 06/27/1989
Inventor: Burton
Process for the reduction of nitrogen oxides in an effluent
Patent #: 4844878
Issued on: 07/04/1989
Inventor: Epperly , et al.
Methods of removing NOx and SOx emissions from combustion systems using nitrogenous compounds
Patent #: 4851201
Issued on: 07/25/1989
Inventor: Heap , et al.
Methods of reducing NOx and SOx emissions from combustion systems
Patent #: 4861567
Issued on: 08/29/1989
Inventor: Heap , et al.
Multi-stage process for reducing the concentration of pollutants in an effluent using an ammonium salt
Patent #: 4863704
Issued on: 09/05/1989
Inventor: Epperly , et al.
Process for the reduction of nitrogen oxides in an effluent
Patent #: 4863705
Issued on: 09/05/1989
Inventor: Epperly , et al.
Process for removing nitrogen oxides
Patent #: 4865827
Issued on: 09/12/1989
Inventor: Tachi , et al.
Low temperature process for the reduction of nitrgen oxides in an effluent
Patent #: 4873066
Issued on: 10/10/1989
Inventor: Epperly, et al.
Process for the reduction of nitrogen oxides in an effluent using sugar
Patent #: 4877591
Issued on: 10/31/1989
Inventor: Epperly, et al.
Process for the reduction of nitrogen oxides in an effluent using a heterocyclic hydrocarbon
Patent #: 4888165
Issued on: 12/19/1989
Inventor: Epperly, et al.
Process for nitrogen oxides reduction with minimization of the production of other pollutants
Patent #: 4902488
Issued on: 02/20/1990
Inventor: Epperly, et al.
Method for baghouse brown plume pollution control
Patent #: 4908194
Issued on: 03/13/1990
Inventor: Hooper
Boiler and injector for reducing the concentration of pollutants in an effluent
Patent #: 4915036
Issued on: 04/10/1990
Inventor: DeVita
Reduction of nitrogen- and carbon-based pollutants
Patent #: 4927612
Issued on: 05/22/1990
Inventor: Bowers
Combined catalytic/non-catalytic process for nitrogen oxides reduction
Patent #: 4978514
Issued on: 12/18/1990
Inventor: Hofmann, et al.
Process for reducing nitrogen oxides without generating nitrous oxide
Patent #: 4997631
Issued on: 03/05/1991
Inventor: Hofmann, et al.
Multi-stage process for reducing the concentration of pollutants in an effluent
Patent #: 5057293
Issued on: 10/15/1991
Inventor: Epperly, et al.
Catalytic/non-catalytic combination process for nitrogen oxides reduction
Patent #: 5139754
Issued on: 08/18/1992
Inventor: Luftglass, et al.
Process for the in-line hydrolysis of urea
Patent #: 5240688
Issued on: 08/31/1993
Inventor: von Harpe, et al.
Highly efficient hybrid process for nitrogen oxides reduction Patent #: 5286467
Issued on: 02/15/1994
Inventor: Sun, et al.
April 13, 2014. 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.
